JP6747966B2 - Method for producing paper treating agent and method for improving texture of paper - Google Patents

Description

The present invention relates to a method for producing a paper treating agent and a method for improving the texture of paper.

BACKGROUND ART Conventionally, there is known a product in which a paper is treated with a paper treating agent containing a moisturizing agent as a main component to give a moist feeling to the paper as compared with an ordinary dry tissue. Lotion tissue, which is a typical product of this type, is a moisturizing tissue in which lotion agent is applied to tissue base paper as a paper treatment agent. , Has become popular as a seasonal product for the winter such as against influenza, and in recent years, it has been expanding from nasal blows to daily use, and is becoming a year-round product.

In many cases, polyhydric alcohols such as glycerin and polyethylene glycol (PEG), especially glycerin derived from natural fats and oils, are used as the moisturizing agent for moisturizing tissues. This moisturizer is supposed to strengthen the moisture absorption and moisturizing properties of papers and give the papers a moist feeling, and in addition to that, it enhances the willingness to purchase and feels when people touch something. The texture and texture are the most important qualities of moisturizing tissues. Various bases such as surfactants, oily components such as hydrocarbons and esters, and thickeners are added in order to improve texture such as softness and surface feel (smoothness). The surfactant is a component that mainly affects the characteristics of the texture and can impart softness. The oily component is a component that mainly influences the change in texture and can impart smoothness.

However, in order to uniformly mix the humectant of the main component and these bases, it is necessary to emulsify, but it is very difficult to prepare an emulsification system based on the humectant and It is also very difficult to achieve both the balance of the base material for adjusting and the balance of the base material for improving the texture. In addition, no objective index has been established at present for the conditions that define the relationship between the combination of base materials and the improvement in texture.

Conventionally, the following techniques have been proposed as techniques for treating papers with a chemical solution.

In Patent Document 1, in spray-applying the additive composition to a sheet material such as paper, a liquid mixture containing the additive composition and a compressed fluid is formed in a closed pressure device system, and the liquid mixture is orificed. More spraying is suggested. Non-limiting examples of a wide variety of additive compositions to be used, depending on the desired properties and performance of the sheet product. In the examples specifically disclosing the invention, it is described that an additive composition containing a modified silicone softener or a modified lanolin softener and a lotion is sprayed onto a tissue paper and uniformly applied.

Patent Document 2 proposes a facial tissue containing a tissue substrate and a nasal discharge skin stimulating substance sequestering agent. It is described that the nasal discharge skin stimulant sequestering agent is used together with an excipient such as lotion. In the examples specifically disclosing the invention, water is 74 to 75%, glycerin is 5%, wax, sequestering agent. An example in which a formulation and bentonite are blended to produce a lotion is described.

Patent Document 3 describes that a roll-shaped toilet paper contains cream, but details thereof, particularly, combination with a moisturizer is not described.

In Patent Documents 4 to 6, in a paper product such as a moisturizing tissue, a humectant is added when a paper treating agent is produced, and a surfactant and an oil component are separately added as single components. Is listed.

Patent Document 4 proposes a paper product in which a base paper contains one or more oil substances selected from hydrocarbons, vegetable oils, waxes and higher alcohols, and a water-soluble wax. Examples of the water-soluble wax include polyethylene glycol having an average molecular weight of 1,000 or more and 20,000 or less, which has a melting point of 30° C. or more and is solid at room temperature. In addition to these oil substances (oil-based components) and water-soluble wax, examples in which a moisturizing agent such as glycerin or a surfactant is used in combination are described. However, these oil-based components and surfactants are separate components. Is added as.

Patent Document 5 proposes a chemical-solution-containing thin paper in which a base paper contains a chemical solution containing a humectant and has a moisture content in a specific range. It is described that the chemical liquid may contain an emulsifying component (surfactant) and an oil component, but these surfactant and oil component are separately added as single components.

Patent Document 6 proposes a medical-solution-containing thin paper in which a microcapsule encapsulating components such as a fragrance, an antiviral agent, and an emollient component, and a powder having an average particle size of the microcapsules or more are contained in a chemical solution. There is. This microcapsule uses a melamine resin or the like as a film agent, and is described as a film hardened into a wall material by a method such as coacervation, prilling, microsponge formation, and spray drying. The purpose is to develop the effect of the encapsulated component by a hard capsule film, but the effect on the texture such as the softness and smoothness of such microcapsules and powders used in combination with them is It is different from the oily component. Further, it is described that the chemical liquid may contain an emulsifying component (surfactant) and an oil component together with the moisturizing agent, but these surfactant and oil component are separately added as single components.

Special table 2001-510237 gazette Japanese Patent Publication No. 2002-533365 JP, 2002-136444, A JP, 10-226986, A JP, 2007-100229, A JP, 2007-204869, A

However, the preparation of emulsion systems based on moisturizers is generally very difficult. In the conventional technology as described above, when a chemical solution is produced as a paper treating agent, a moisturizer is added, and a surfactant and an oil component are separately added as individual components, but with the passage of time, The chemical liquid separates. For example, separation may be observed after 3 days, and when the chemical solution is separated, it becomes impossible to uniformly impregnate the base paper with the chemical solution. Therefore, preparation of an emulsification system for suppressing the separation of the drug solution requires restrictions on the types and combinations of the components, which is limited. Against this background, there has been a demand for a technique that simply suppresses the separation of the chemical solution when a surfactant or an oily component is added to improve the texture.

The present invention has been made in view of the circumstances as described above, and in a paper treating agent using a moisturizing agent, it is possible to impart a moist feeling and a good texture to papers, and a paper treating agent. It is an object of the present invention to provide a method for producing a paper treating agent that can easily suppress the separation of paper and a method for improving the texture of the paper.

As a result of intensive studies by the present inventors, when an emulsion such as a cosmetic is prepared in advance and a paper treating agent is produced by adding this as a raw material, it is difficult to suppress segregation over time. Even in a system containing an agent as a main component, it is possible to maintain a uniform emulsified state without being easily separated simply by adding an emulsion, and in particular, separation is observed even after one month has passed after separation for several days. Needless to say, the stability over time is improved, which reduces the restrictions on the types and combinations of surfactants and oil components, and even compared to systems in which surfactants and oil components were added separately. The inventors have found that the physical properties of the emulsion lead to the improvement of the texture of papers, and have completed the present invention.

That is, in order to solve the above problems, the method for producing a paper treating agent of the present invention is a method for producing a paper treating agent containing a moisturizing agent as a main component, characterized by adding an emulsion. There is.

The method of improving the texture of papers of the present invention is characterized by treating the papers with the paper treating agent produced by the above method.

According to the present invention, it is possible to impart a moist feeling and a good texture to papers, and it is easy to suppress separation of the paper treating agent.

The present invention will be described in detail below.
(Humectant)
In the present invention, the paper treating agent contains a moisturizing agent as a main component. The moisturizer enhances the hygroscopicity and moisturizing property of papers and gives the papers a moist feeling.

Here, the main component means that the moisturizing agent is mixed in the largest amount among the additive components that are the raw materials of the paper treating agent. Among them, the addition amount of the moisturizing agent is preferably 50 to 99.9% by mass, more preferably 70 to 99% by mass, and further preferably 70 to 90% by mass based on the total amount of the raw materials for the paper treating agent.

Examples of the humectant used in the present invention include polyhydric alcohols, sugar alcohols, saccharides, amino acids, hygroscopic alkalis/acids and salts thereof. These may be used alone or in combination of two or more.

Examples of the polyhydric alcohol include glycerin, diglycerin, triglycerin, polyglycerin, polyethylene glycol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, 1,3-butanediol, 1,4-butanediol, 1,2-pentanediol, 1,2-hexanediol, 3-methyl-1,3-butanediol, ethylene glycol, diethylene glycol, triethylene glycol, polyoxyethylene glycerin ether, isoprene glycol, Examples thereof include pentaerythritol and trimethylolpropane.

Examples of sugar alcohols include sorbitol, inositol, glucosyltrehalose, xylitol, erythritol, mannitol, lactitol, fructose, oligosaccharide alcohols, maltitol, reduced palatinose, reduced starch syrup, reduced starch hydrolysates, and the like.

Examples of the sugar include fructose, glucose, lactose, xylose, psicose, maltose, starch syrup, oligosaccharide, maltose, trehalose, lactose, palatinit, sucrose, isomerized sugar, isomaltooligosaccharide, fructooligosaccharide, galactooligosaccharide, xylooligosaccharide. , Milk fruit oligosaccharides, soybean oligosaccharides, raffinose, stevia, licorice, saccharin, asterpalm, acesulfame K, sucralose and the like.

Examples of the amino acids include glycine, valine, leucine, isoleucine, serine, threonine, phenylalanine, arginine, lysine, aspartic acid, glutamic acid, cystine, cysteine, methionine and tryptophan.

Examples of the hygroscopic alkalis/acids and salts thereof include, for example, pantetheine-S-sulfonate, trimethylglycine, betaine, pyrophosphate, sodium pyrophosphate, chondroitin sulfate, potassium pyrophosphate, hyaluronic acid, hyaluronic acid. Examples thereof include sodium, sodium metaphosphate, potassium polyphosphate, sodium pyrrolidonecarboxylate, sodium lactate, sodium chloride, calcium chloride, sodium alginate, sodium polyacrylate and the like.

Among these moisturizers, polyhydric alcohols are preferable, and glycerin is more preferable. When glycerin is used as the moisturizer, the proportion of glycerin with respect to the total amount of the moisturizer is preferably 80% by mass or more, more preferably 90% by mass or more. Examples of the moisturizer used in combination with glycerin include sorbitol and the like.

(Emulsion)
In the present invention, the emulsion is not particularly limited as long as one of the oil-soluble component and the water-soluble component becomes fine particles and is dispersed in the other, for example, the water-soluble component in the oil-soluble component is Examples thereof include water-in-oil type in which oil-in-oil type is dispersed, oil-in-water type in which oil-soluble component is dispersed in water-soluble component, and water-in-oil-in-water type. Among these, the oil-in-water type and the water-in-oil-in-water type are preferable.

As the emulsion, cosmetics can be preferably used. Surfactants and oily ingredients that are compounding ingredients of cosmetics are suitable for improving the texture such as softness and smoothness.By adding the cosmetics as an emulsion, the paper treating agent can be treated with time. Separation is significantly suppressed.

The cosmetics are not particularly limited as long as they are emulsions, but include skin cosmetics (basic cosmetics), makeup cosmetics, hair care cosmetics and the like. Among them, or to clean the body, for the purpose of or beautiful appearance, but to apply such to the skin or the like, those relaxation effects, for example, basic cosmetics (face cosmetics, Bode _Lee cosmetics) is preferred .. Here, the cosmetics are not limited to general cosmetics, but also include quasi drugs, designated quasi drugs, and external medicines.

The dosage form of the cosmetics is not particularly limited, and examples thereof include cream, emulsion (milk), liquid (liquid), gel (gel), etc. (hereinafter, abbreviated as cream, emulsion, liquid, gel in the present specification. There is a case.). Creamy is generally opaque and has no fluidity at room temperature (25°C), and emulsion is generally opaque and white in appearance and fluid at room temperature (25°C). In general, a liquid (liquid) has a transparent appearance and has fluidity at room temperature (25° C.), and a gel (gel) generally has a transparent appearance and a room temperature (25° C.). ℃) means that there is no fluidity.

As creamy cosmetics, for example, cold cream, nourishing cream, vanishing cream, emollient cream, moisturizing cream, moisture cream, night cream, eye cream, hand cream, lip cream, shaving cream, body cream, hair cream, Examples include cleansing cream, baby cream, medical cream, skin cream, gel cream, botanical cream, fresh cream, whipped cream and the like.

Examples of milky liquid cosmetics include cold milk, nourishing milk, vanishing milk, emollient milk, moisturizing milk, moisture milk, night milk, eye milk, hand milk, lip milk, shaving milk, body milk, hair milk, cleansing. Milk, baby milk, medical milk, skin milk, gel milk, botanical milk and the like can be mentioned.

Examples of liquid (liquid) cosmetics include cold liquid, nourishing liquid, vanishing liquid, emollient liquid, moisturizing liquid, moisture liquid, night liquid, eye liquid, hand liquid, lip liquid, shaving liquid, body liquid (body). Lotion), hair liquid (hair lotion), cleansing liquid (cleansing lotion), baby liquid, medical liquid, skin liquid (skin lotion), gel liquid, botanical liquid, lotion, beauty essence, cleansing oil, etc. To be

Examples of gel cosmetics include cold gel, nourishing gel, vanishing gel, emollient gel, moisturizing gel, moisturizing gel, night gel, eye gel, hand gel, lip gel, shaving gel, body gel, hair gel, cleansing gel, baby gel, Medical gel, skin gel, botanical gel and the like can be mentioned.

In the present invention, the emulsion is preferably at least one selected from cream, emulsion, liquid, and gel among the above-mentioned dosage forms. In the present invention, the emulsion is preferably creamy. When the emulsion is creamy, the texture of papers, especially the smoothness is remarkably improved.

The emulsion is preferably a viscoelastic body. When the emulsion is a viscoelastic body, the texture of papers, especially smoothness, is improved. In the present invention, the viscoelastic body refers to one having a strain value at which the phase angle with the stress when strained is 45°. The strain value at which the phase angle becomes 45° is not particularly limited and may be 0.01% or more, but from the viewpoint of improving the texture, it is preferably 0.1% or more and 200% or less, and 0.1% or more. More preferably, it is 100% or less, more preferably 0.1% or more and 80% or less, and particularly preferably 0.1% or more and 50% or less. When the emulsified product is a cosmetic, the cream or the like can have a strain value of 0.1% or more and 50% or less, and the texture of papers, particularly the smoothness is remarkably improved.

The phase angle with the stress when the strain is applied and the strain value at which the phase angle is 45° can be obtained, for example, by measurement with a rheometer.

When the emulsion is an oil-in-water type or a water-in-oil-in-water type, the median diameter of oil droplets in the emulsion is preferably 0.01 to 500 μm, more preferably 0.1 to 100 μm. The median diameter can be obtained, for example, by measurement with a laser diffraction particle size distribution measuring device (SALD-2300 or the like) manufactured by Shimadzu Corporation.

In the present invention, as the surfactant used in the emulsion, one kind may be used alone or two or more kinds may be used in combination depending on the desired texture, emulsification characteristics and the like. Surfactants generally homogenize an aqueous component such as water and an oil component, which are not normally mixed, by emulsification.

In the present invention, the surfactant used in the emulsion can be appropriately selected and used from an anionic surfactant, a nonionic surfactant, a cationic surfactant, and a zwitterionic surfactant.

As the nonionic surfactant, for example, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, castor Oil fatty acid ester, hydrogenated castor oil fatty acid ester, ethylene glycol fatty acid ester, sucrose fatty acid ester, glycerin fatty acid ester, diglycerin fatty acid ester, polyglycerin fatty acid ester, organic acid monoglyceride, polyethylene glycol fatty acid monoethanolamide, propylene glycol fatty acid ester, Polyoxyethylene lanolin alcohol ether, polyoxyethylene alkyl ether, lauric acid alkanolamide, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil pyroglutamic acid fatty acid diester, pyroglutamic acid fatty acid glyceryl, polyoxyethylene glyceryl pyroglutamic acid fatty acid diester, Examples thereof include polyether-modified silicone.

Examples of the anionic surfactant include alkylbenzene sulfonate, alkylnaphthalene sulfonate, alkyl sulfonate, α-olefin sulfonate, alkyl sulfate, alkyl sulfate ester, alkyl ether phosphate, N-acyl. Amino acid salts, alkyl allyl sulfonates, alkyl ether sulfates, alkyl amide sulfates, alkyl phosphates, alkyl phosphonic acids or salts thereof, alkyl amide phosphates, alkyloylalkyl taurine salts, fatty acid salts, polyoxyethylene alkyl Ether acetate, sodium coconut oil fatty acid methyl taurine, polyoxyethylene alkyl ether sulfate, phosphate salt, polyoxyethylene alkyl ether phosphate, dialkyl sulfosuccinate, perfluoroalkyl phosphate ester, N-acyl-L -Glutamate, N-acyl-L-arginine ethyl-DL-pyrrolidone carboxylate and the like.

As the cationic surfactant, for example, monoalkyltrimethylammonium salt, dialkyldimethylammonium salt, alkylpyridinium salt, N,N-dialkyloyloxyethyl-N-methyl,N-hydroxyethylammonium salt, alkylamine salt, stearyl. Examples thereof include dimethylbenzyl ammonium salt.

Examples of the amphoteric surfactant include alkyl betaine, fatty acid amidopropyl betaine, lauryl hydroxysulfobetaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lecithin, hydrogenated lecithin, alkyloxyhydroxypropyl. Arginine hydrochloride, lauryl hydroxysultaine, laurimino dipropionic acid, undecyl hydroxyethyl imidazolinium betaine sodium, sodium lauryl amino difacetate, lauryl dimethyl amino acetate betaine, N-[3-alkyloxy-2-hydroxypropyl] Examples include -L-arginine hydrochloride, alkylhydroxysulfobetaine, alkyldimethylamine oxide, sodium alkylaminodipropionate, dihydroxyalkylmethylglycine, sodium lauryldiaminoethylglycine, and the like.

Among these, a surfactant having an alkyl group having 14 to 18 carbon atoms (C14-C18) or a carboxyl group (fatty acid) is preferable, and an alkyl group having 16 to 18 carbon atoms (C16-C18) or a carboxyl group ( A surfactant having a fatty acid) is more preferable. Use of these surfactants improves the texture (smoothness, softness, etc.). In addition, these alkyl groups or carboxyl groups (fatty acids) may be unsaturated or saturated, and may be linear or branched.

In the present invention, as the oily component used in the emulsion, one kind may be used alone, or two or more kinds may be used in combination depending on the desired texture, emulsification characteristics and the like.

The oily component is not particularly limited, and examples thereof include hydrocarbons, fats and oils, esters, fatty acids, higher alcohols, silicone oils, waxes, steroids, etc., which are liquid at room temperature and paste. It may be solid or solid. These may be used alone or in combination of two or more.

Examples of the hydrocarbons include liquid paraffin, paraffin, solid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, ceresin, microcrystalline wax, vaseline, squalane, polyethylene wax, polypropylene wax, hydrogenated polyisobutene, ethylene/α- Examples thereof include olefin/co-oligomer and ethylene propylene polymer.

Examples of oils and fats include avocado oil, almond oil, linseed oil, olive oil, cacao oil, sesame oil, camellia oil, castor oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, southern oil, safflower oil, Soybean oil, evening primrose oil, camellia oil, corn oil, rapeseed oil, persic oil, palm kernel oil, coconut oil, palm oil, beef tallow, lard, horse fat, sheep fat, shea butter, cocoa butter, turtle oil, mink oil , Egg yolk oil, parserine oil, castor oil, sunflower oil, jojoba oil, grape seed oil, macadamia nut oil, cottonseed oil, meadow home oil, coconut oil, peanut oil, cod liver oil, rosehip oil, tallow hardened oil, beef tallow hardened oil , Hydrogenated castor oil, extremely hardened palm oil, and the like.

Examples of the esters include stearic acid alkyl ester, palmitic acid alkyl ester, myristic acid alkyl ester, lauric acid alkyl ester, behenic acid alkyl ester, oleic acid alkyl ester, isostearic acid alkyl ester, 12-hydroxystearic acid alkyl ester, Undecylenic acid alkyl ester, lanolin fatty acid alkyl ester, erucic acid alkyl ester, coconut oil fatty acid alkyl ester, stearoyloxystearic acid alkyl ester, isononanoic acid alkyl ester, dimethyloctanoic acid alkyl ester, octanoic acid alkyl ester, lactic acid alkyl ester, ethylhexane Acid alkyl ester, neopentanoic acid alkyl ester, malic acid alkyl ester, phthalic acid alkyl ester, citric acid alkyl ester, malonic acid alkyl ester, adipic acid alkyl ester, ethylene glycol fatty acid ester, propanediol fatty acid ester, butanediol fatty acid ester, triester Methylolpropane fatty acid ester, pentaerythritol fatty acid ester, polyglycerin fatty acid ester, trehalose fatty acid ester, pentylene glycol fatty acid ester and the like can be mentioned.

Examples of the fatty acids include stearic acid, palmitic acid, myristic acid, lauric acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, undecylenic acid, lanolin fatty acid, erucic acid and stearoyloxystearic acid. To be

Examples of higher alcohols include lauryl alcohol, cetyl alcohol, cetostearyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, lanolin alcohol, hexyldecanol, myristyl alcohol, aralkyl alcohol, phytosterols, isostearyl alcohol, octyldodecanol and the like. To be

Examples of silicone oils include amino-modified silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, polyether-modified oil, polyglycerin-modified silicone oil, dimethylpolysiloxane, dimethylsilicone, polyether-modified silicone, methylphenylsilicone, Alkyl-modified silicone, higher fatty acid-modified silicone, methylhydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, amino-modified silicone, methylpolysiloxane, methylphenylpolysiloxane, silicone resin, dimethicone, methyl Examples thereof include hydrogen polysiloxane, methylcyclopolysiloxane, octamethyltrisiloxane, tetramethylhexasiloxane, and highly polymerized methylpolysiloxane.

Examples of waxes include, for example, owl, beeswax, hazel wax, sumac wax, sugar cane wax, palm wax, montan wax, carnauba wax, candelilla wax, rice bran wax, lanolin, whale wax, reduced lanolin, liquid lanolin, hard lanolin, ceresin, and ozokerite. Can be mentioned.

Examples of steroids include cholesterol, dihydrocholesterol, cholesterol fatty acid ester and the like.

Among these, oily components having an alkyl group or a carboxyl group (fatty acid) having 14 to 18 carbon atoms (C14-C18), carboxylic acids having 14 to 18 carbon atoms (C14 to C18), and 14 to 18 carbon atoms. (C14-C18) higher alcohols are preferable, and an alkyl group or a carboxyl group (fatty acid) having a carbon number of 16 to 18 (C16-C18) is an oily component, and a carvone having a carbon number of 16 to 18 (C16-C18). Acids and higher alcohols having 16 to 18 carbon atoms (C16-C18) are more preferable. Use of these oily ingredients improves the texture (smoothness). In addition, these alkyl groups or carboxyl groups (fatty acids) may be unsaturated or saturated, and may be linear or branched.

In the present invention, the addition amount of the emulsion in the paper treating agent is preferably a physical amount, that is, 0.01 to 30% by mass with respect to the total amount of each raw material of the paper treating agent added as it is, 1 More preferably, it is from 0 to 20 mass %. Further, it is preferably 0.001 to 10% by mass, more preferably 0.05 to 5% by mass in terms of the effective amount, that is, the amount obtained by removing the amount of water added from the amount of each raw material of the emulsion.

(Surfactants other than emulsions in paper processing agents)
In the present invention, a surfactant can be added to the paper treatment agent as a single component separately from the emulsion, in addition to the emulsion, as long as the effects of the present invention are not impaired. The surfactant added as this single component can improve the texture even if the amount of the emulsion added is reduced, and in particular, the softness of papers can be improved. That is, by adding the above emulsion, it is possible to suppress the separation of the paper treating agent and improve the texture even if the addition amount is reduced. In the present invention, as the surfactant other than the emulsion, one kind may be used alone, or two or more kinds may be used in combination depending on the desired texture.

The surfactant other than the emulsion can be appropriately selected and used from an anionic surfactant, a nonionic surfactant, a cationic surfactant, and a zwitterionic surfactant.

As the nonionic surfactant, for example, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, castor Oil fatty acid ester, hydrogenated castor oil fatty acid ester, ethylene glycol fatty acid ester, sucrose fatty acid ester, glycerin fatty acid ester, diglycerin fatty acid ester, polyglycerin fatty acid ester, organic acid monoglyceride, polyethylene glycol fatty acid monoethanolamide, propylene glycol fatty acid ester, Polyoxyethylene lanolin alcohol ether, polyoxyethylene alkyl ether, lauric acid alkanolamide, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil pyroglutamic acid fatty acid diester, pyroglutamic acid fatty acid glyceryl, polyoxyethylene glyceryl pyroglutamic acid fatty acid diester, Examples thereof include polyether-modified silicone.

Examples of the anionic surfactant include alkylbenzene sulfonate, alkylnaphthalene sulfonate, alkyl sulfonate, α-olefin sulfonate, alkyl sulfate, alkyl sulfate ester, alkyl ether phosphate, N-acyl. Amino acid salts, alkyl allyl sulfonates, alkyl ether sulfates, alkyl amide sulfates, alkyl phosphates, alkyl phosphonic acids or salts thereof, alkyl amide phosphates, alkyloylalkyl taurine salts, fatty acid salts, polyoxyethylene alkyl Ether acetate, sodium coconut oil fatty acid methyl taurine, polyoxyethylene alkyl ether sulfate, phosphate salt, polyoxyethylene alkyl ether phosphate, dialkyl sulfosuccinate, perfluoroalkyl phosphate ester, N-acyl-L -Glutamate, N-acyl-L-arginine ethyl-DL-pyrrolidone carboxylate and the like.

As the cationic surfactant, for example, monoalkyltrimethylammonium salt, dialkyldimethylammonium salt, alkylpyridinium salt, N,N-dialkyloyloxyethyl-N-methyl,N-hydroxyethylammonium salt, alkylamine salt, stearyl. Examples thereof include dimethylbenzyl ammonium salt.

Examples of the amphoteric surfactant include alkyl betaine, fatty acid amidopropyl betaine, lauryl hydroxysulfobetaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lecithin, hydrogenated lecithin, alkyloxyhydroxypropyl. Arginine hydrochloride, lauryl hydroxysultaine, laurimino dipropionic acid, undecyl hydroxyethyl imidazolinium betaine sodium, sodium lauryl amino difacetate, lauryl dimethyl amino acetate betaine, N-[3-alkyloxy-2-hydroxypropyl] Examples include -L-arginine hydrochloride, alkylhydroxysulfobetaine, alkyldimethylamine oxide, sodium alkylaminodipropionate, dihydroxyalkylmethylglycine, sodium lauryldiaminoethylglycine, and the like.

Among these, a surfactant having an alkyl group having 14 to 18 carbon atoms (C14-C18) or a carboxyl group (fatty acid) is preferable, and an alkyl group having 16 to 18 carbon atoms (C16-C18) or a carboxyl group ( A surfactant having a fatty acid) is more preferable. Use of these surfactants improves the texture (smoothness, softness, etc.). In addition, these alkyl groups or carboxyl groups (fatty acids) may be unsaturated or saturated, and may be linear or branched.

In the present invention, when a surfactant other than the emulsion is added to the paper treating agent, the addition amount is preferably 20% by mass or less based on the total amount of each raw material of the paper treating agent, 0.01 to 20 mass% is more preferable. The mass ratio of the emulsion to the surfactant other than the emulsion is preferably 1:0.01 to 10000, more preferably 1:0.1 to 1000 in terms of the effective content of the emulsion. Here, the effective amount is the amount obtained by subtracting the added amount of water from the added amount of each raw material of the emulsion. When the amount is within the range, it is suitable for improving the texture while reducing the amount of the emulsion added, and particularly for improving the softness of papers.

(Oil components other than emulsion in paper processing agents)
In the present invention, in addition to the above emulsion, an oil component can be added to the paper treating agent as a single component separately from the above emulsion within a range that does not impair the effects of the present invention. The oily component added as this single component can improve the texture even if the amount of the emulsion added is reduced, and in particular, the smoothness of papers can be improved. That is, by adding the above emulsion, it is possible to suppress the separation of the paper treating agent and improve the texture even if the addition amount is reduced. In the present invention, as the oily component other than the emulsion, one type may be used alone, or two or more types may be used in combination depending on the desired texture.

The oily component is not particularly limited, and examples thereof include hydrocarbons, fats and oils, esters, fatty acids, higher alcohols, silicone oils, waxes, steroids, etc., which are liquid at room temperature and paste. It may be solid or solid. These may be used alone or in combination of two or more.

Examples of the hydrocarbons include liquid paraffin, paraffin, solid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, ceresin, microcrystalline wax, vaseline, squalane, polyethylene wax, polypropylene wax, hydrogenated polyisobutene, ethylene/α- Examples thereof include olefin/co-oligomer and ethylene propylene polymer.

Examples of oils and fats include avocado oil, almond oil, linseed oil, olive oil, cacao oil, sesame oil, camellia oil, castor oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, southern oil, safflower oil, Soybean oil, evening primrose oil, camellia oil, corn oil, rapeseed oil, persic oil, palm kernel oil, coconut oil, palm oil, beef tallow, lard, horse fat, sheep fat, shea butter, cocoa butter, turtle oil, mink oil , Egg yolk oil, parserine oil, castor oil, sunflower oil, jojoba oil, grape seed oil, macadamia nut oil, cottonseed oil, meadow home oil, coconut oil, peanut oil, cod liver oil, rosehip oil, beef tallow oil, extremely hardened beef tallow oil , Hydrogenated castor oil, extremely hardened palm oil, and the like.

Examples of the esters include stearic acid alkyl ester, palmitic acid alkyl ester, myristic acid alkyl ester, lauric acid alkyl ester, behenic acid alkyl ester, oleic acid alkyl ester, isostearic acid alkyl ester, 12-hydroxystearic acid alkyl ester, Undecylenic acid alkyl ester, lanolin fatty acid alkyl ester, erucic acid alkyl ester, coconut oil fatty acid alkyl ester, stearoyloxystearic acid alkyl ester, isononanoic acid alkyl ester, dimethyloctanoic acid alkyl ester, octanoic acid alkyl ester, lactic acid alkyl ester, ethylhexane Acid alkyl ester, neopentanoic acid alkyl ester, malic acid alkyl ester, phthalic acid alkyl ester, citric acid alkyl ester, malonic acid alkyl ester, adipic acid alkyl ester, ethylene glycol fatty acid ester, propanediol fatty acid ester, butanediol fatty acid ester, trimethylol Examples thereof include propane fatty acid ester, pentaerythritol fatty acid ester, polyglycerin fatty acid ester, trehalose fatty acid ester, and pentylene glycol fatty acid ester.

Examples of the fatty acids include stearic acid, palmitic acid, myristic acid, lauric acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, undecylenic acid, lanolin fatty acid, erucic acid and stearoyloxystearic acid. To be

Examples of higher alcohols include lauryl alcohol, cetyl alcohol, cetostearyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, lanolin alcohol, hexyldecanol, myristyl alcohol, aralkyl alcohol, phytosterols, isostearyl alcohol, octyldodecanol and the like. To be

Examples of silicone oils include amino-modified silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, polyether-modified oil, polyglycerin-modified silicone oil, dimethylpolysiloxane, dimethylsilicone, polyether-modified silicone, methylphenylsilicone, Alkyl-modified silicone, higher fatty acid-modified silicone, methyl hydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, amino-modified silicone, methyl polysiloxane, methylphenyl polysiloxane, silicone resin, dimethicone, methyl Examples thereof include hydrogen polysiloxane, methylcyclopolysiloxane, octamethyltrisiloxane, tetramethylhexasiloxane, and highly polymerized methylpolysiloxane.

Examples of the waxes include owl, beeswax, hazel wax, sumac wax, sugar cane wax, palm wax, montan wax, carnauba wax, candelilla wax, rice bran wax, lanolin, whale wax, reduced lanolin, liquid lanolin, hard lanolin, ceresin, and ozokerite. To be

Examples of steroids include cholesterol, dihydrocholesterol, cholesterol fatty acid ester and the like.

Among these, oily components having an alkyl group or a carboxyl group (fatty acid) having 14 to 18 carbon atoms (C14-C18), carboxylic acids having 14 to 18 carbon atoms (C14 to C18), and 14 to 18 carbon atoms. (C14-C18) higher alcohols are preferable, and an oily component having an alkyl group or a carboxyl group (fatty acid) having 16 to 18 (C16-C18) carbon atoms, a carvone having 16 to 18 carbon atoms (C16-C18). Acids and higher alcohols having 16 to 18 carbon atoms (C16-C18) are more preferable. Use of these oily ingredients improves the texture (smoothness). In addition, these alkyl groups or carboxyl groups (fatty acids) may be unsaturated or saturated, and may be linear or branched.

(Other components in paper treating agents)
In the present invention, components other than those described above can be added to the paper treating agent as raw materials within a range that does not impair the effects of the present invention. Such other components are not particularly limited, but include, for example, water, thickeners, antifungal agents, preservatives, antifoaming agents, fragrances, pigments, pH adjusters, extracts, antioxidants, and antioxidants. Examples include inflammatory agents.

The amount of water added is preferably 1 to 30% by mass, more preferably 3 to 25% by mass, and even more preferably 5 to 20% by mass, based on the total amount of each raw material added to the paper treating agent.

(Method for manufacturing paper treating agent)
In the present invention, the paper treating agent can be produced by uniformly mixing the respective raw materials according to a conventional method. For example, each raw material other than the emulsion can be mixed by stirring, the emulsion can be added, and then the mixture can be further stirred and mixed to manufacture.

(How to improve the texture of papers)
By treating the paper with the paper treating agent produced by the above method, the texture of the paper can be improved.

Examples of the paper include tissue paper, toilet paper, facial tissue, pocket tissue, paper handkerchief, paper towel, and the like.

1-50 g/m< ³ > is preferable and, as for the basis weight of papers, 5-20 g/m< ³ > is more preferable. The number of plies (the number of laminated base papers) is preferably from 1 to 5, more preferably from 2 to 3.

Examples of the method of treating paper with a paper treating agent include a method of applying to paper. Examples of the method for applying to papers include transfer and spraying. Examples of the method of applying to papers by these methods include a flexographic printing method, a gravure printing method, a spray method, and a rotor dampening method. In the flexographic printing method, a flexographic printing machine, which is a type of letterpress printing machine, is used, and a paper treating agent is transferred onto paper by a roller equipped with a printing plate such as rubber or synthetic resin whose surface is engraved. In the gravure printing method, a gravure printing machine, which is a kind of intaglio printing machine, is used, and a paper treating agent is transferred onto paper by a roller mounted by a metal cylinder having a plate-making surface. In the spray method, the paper treating agent is atomized onto the paper from the nozzle by compressed air. In the rotor dampening method, the paper treating agent is atomized and sprayed onto the paper using a disk that rotates at high speed.

The coating amount of paper treating agent to paper is preferably ^{1~7g / m 3, 1.5~6g / m} 3 and more preferably.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
(1) Preparation of paper treating agent A paper treating agent was prepared by the following procedure.
Glycerin, sorbitol, water, a surfactant, and an oily component were charged in a beaker at the addition amounts shown in Tables 1 and 2, and the mixture was stirred and mixed at a temperature at which each raw material was dissolved. A paper treating agent was prepared by stirring and mixing for 1 hour at a melting temperature. The surfactant and the oily component were added after being heated and dissolved. In Comparative Examples 3 to 7, each component was added as it was without emulsification, and the mixture was stirred and mixed so that the amounts of components were the same as those of Cream 6, Cream 7, Emulsion 2, Liquid 2, and Liquid 4, respectively. Was prepared.

The following were used as the emulsion, the surfactant, and the oil component shown in Tables 1 and 2. The amounts of emulsions shown in Tables 1 and 2 are tangible amounts containing water, and the effective component means the amount of components excluding water.

Emulsion (cream 1)
Arobina II hand cream (hand cream, effective content 13%, strain value 0.89%, oil-in-water emulsion, manufactured by Asahi Chemical Industry Co., Ltd.)

(Cream 2)
Pigeon Baby Cream Q (baby cream, effective content 34%, strain value 0.18%, oil-in-water emulsion, Pigeon Home Products Co., Ltd.)

(Cream 3)
Botanical all-in-one gel cream (botanical gel cream, effective content 12%, strain value 17%, oil-in-water emulsion, manufactured by AP Co., Ltd.)

(Cream 4)
Moistage W cold cream a (cold cream, effective content 65%, strain value 17%, oil-in-water emulsion, Kracie Home Products Co., Ltd.)

(Cream 5)
Menthum medicated cream G (medical cream, effective 54%, strain value 2.7%, oil-in-water emulsion, Omi Brothers Co., Ltd.)

(Cream 6)
An oil phase is obtained by mixing and heating the A component at 70°C, and an aqueous phase is obtained by mixing and heating the B component at 70°C. The oil phase was added to the aqueous phase at 70°C and stirred, and the mixture was homogenized with a homomixer and then cooled to 30°C with stirring to give cream (effective content 30%, strain value 1.2%, oil-in-water type). Emulsion).
(A component)
Stearic acid 14.0 mass%
Vaseline 2.0 mass%
Polyoxyethylene sorbitan monostearate (20EO) 1.5% by mass
Glycerin monostearate 2.5% by mass
(B component)
Propylene glycol 10.0 mass%
Purified water 70.0% by mass

(Cream 7)
Raw materials other than purified water shown below are put in a beaker and stirred at 90° C. for 30 minutes, separately charged purified water heated to 90° C. is added to the beaker, stirred at 90° C. for 1 hour, and then cooled to 40° C. while stirring. To obtain a cream (effective content 50%, strain value 0.75%, oil-in-water emulsion).
Sorbitan monostearate 4.0% by mass
Polyoxyethylene castor hydrogenated oil (25EO) 6.0% by mass
Polyoxyethylene sorbitan monostearate (20EO) 5.0% by mass
Liquid paraffin 17.0 mass%
Squalane 0.5 mass%
Extremely hardened palm oil 17.0 mass%
Olive oil 0.5% by mass
Purified water 50.0% by mass

(Emulsion 1)
Moisturizing body milk (effective content 38%, strain value 72%, oil-in-water emulsion, Shiseido Co., Ltd.)

(Emulsion 2)
Raw materials other than purified water shown below are put in a beaker and stirred at 90° C. for 30 minutes, separately charged purified water heated to 90° C. is added to the beaker, stirred at 90° C. for 1 hour, and then cooled to 40° C. while stirring. To obtain an emulsion (effective content 25%, strain value 0.019%, oil-in-water emulsion).
Liquid paraffin 17.5% by mass
Sorbitan monostearate 3.0 mass%
Polyethylene glycol sorbitan monostearate (20EO) 4.5% by mass
Purified water 75.0% by mass

(Liquid 1)
Hadalabo Egg Skin Liquid Makeup Remover (effective content 83%, strain value 0.040%, oil-in-water emulsion, manufactured by Rohto Pharmaceutical Co., Ltd.)

(Liquid 2)
Raw materials other than purified water shown below are placed in a beaker and stirred at 40° C. for 30 minutes, and purified water separately heated to 40° C. is placed in a beaker and stirred at 40° C. for 1 hour to form a transparent liquid cleansing liquid (effective component 75 %, strain value 0.021%, oil-in-water emulsion).
M Fine Oil ISG-20T (manufactured by Miyoshi Yushi Co., Ltd.) 12.0% by mass
M Fine Oil COG-7M (manufactured by Miyoshi Yushi Co., Ltd.) 6.0% by mass
M Fine Oil MCG-8M (manufactured by Miyoshi Yushi Co., Ltd.) 12.0% by mass
Concentrated glycerin 25.0% by mass
1,3-butanediol 5.0% by weight
M Fine Oil EHP (manufactured by Miyoshi Yushi Co., Ltd.) 15.0% by mass
Purified water 25.0% by mass

(Liquid 3)
Makeup remover oil FB (effective content 98%, strain value 0.047%, water-in-oil emulsion, milk soap Kyoshinsha Co., Ltd.)

(Liquid 4)
The following raw materials were placed in a beaker and stirred at 40° C. for 1 hour to obtain a colorless transparent liquid cleansing oil (effective content 95%, strain value 0.016%, water-in-oil emulsion).
Liquid paraffin 65.0% by mass
M Fine Oil ISG-8M (manufactured by Miyoshi Yushi Co., Ltd.) 25.0% by mass
Concentrated glycerin 5.0 mass%
Purified water 5.0% by mass

Surfactant Polyethylene glycol glyceryl isostearate (20EO)
Sucrose stearate alkyl (C16-C18) phosphate ester distearyl dimethyl ammonium chloride

Oil Squalancia fat

The strain values of the cream, emulsion and liquid used in the preparation of the paper treating agent were measured by the following method.
<Distortion value>
With a rheometer MCR102 manufactured by Anton Paar, a cone plate type (diameter 50 mm) is used as a measuring jig, and a strain is applied stepwise within a range of 10 ⁻² % to 10 ³ % at a measurement temperature of 25° C. The strain value (%) at which the phase angle (°) with the stress obtained at the time of being 45° was obtained. The frequency was set to 1 Hz, and the number of strain measurement points was set to 51 points by logarithmic elevation between 10 ⁻² % and 10 ³ %.

<effective portion>
A Karl Fischer moisture meter (MKA-610, manufactured by Kyoto Electronics Manufacturing Co., Ltd.) was used to measure the water content (%) of the cream, emulsion and liquid product used in the preparation of the paper treating agent, and the water content was calculated from 100%. The removed portion was defined as the effective portion.

(2) Preparation of treated paper The paper treating agent obtained by the above method was dissolved in water to prepare a treating solution having an effective content of 25% by mass. Each treatment liquid was uniformly spray-treated on both sides of a tissue paper (ply number 2, basis weight 15 g/m ² ) not subjected to the softening treatment, in the same amount as that of the tissue paper. After that, it was air-dried for 24 hours, and further left for 12 hours or more in a constant temperature and constant humidity chamber (temperature 20° C., humidity 65% RH) to equilibrate the moisture content, and then the panel 10 persons performed a sensory evaluation of the tissue paper. I went. In addition, regarding the paper treating agents according to Comparative Examples 3 to 7, it was not possible to perform a sensory evaluation because it was not possible to separate treated papers after preparation and uniformly apply the treating agents.

(3) Evaluation Sensory Evaluation Five pieces of the treated paper obtained by the above method were grasped with one hand, and the moist feeling, softness and smoothness were evaluated according to the following criteria, and the average value was calculated for each item.

[Moist feeling]
5: very moist 4: moist 3: slightly moist 2: equivalent to no treatment agent used 1: no moist

[Softness]
5: Very soft 4: Soft 3: Slightly soft 2: Equivalent to no treatment agent used 1: Not soft

[Smoothness]
5: Very smooth 4: Smooth 3: Slightly smooth 2: Equivalent to no treatment agent used 1: Not smooth

Stability over time After preparing a paper treating agent, about 70% was put in a glass bottle, the lid was closed and the mixture was allowed to stand at room temperature, the appearance was visually confirmed, and the following criteria were evaluated.

◯: Separation was not observed even after one month Δ: Separation was observed within 4 to 15 days ×: Separation was observed within 3 days

The evaluation results are shown in Tables 1 and 2.

From Table 1 and Table 2, in each of the examples, no separation was observed even after one month passed after the preparation of the paper treating agent. In Comparative Examples 3 to 7, each component was added as it was without emulsification, and the mixture was stirred and mixed so that the amounts of components were the same as those of Cream 6, Cream 7, Emulsion 2, Liquid 2, and Liquid 4, respectively. Was prepared, but as seen in these examples, when the oily component and the surfactant were added separately, separation was observed within 3 days in the system containing the moisturizer as the main component. By adding it as an emulsion in this way, a clear improvement effect on the stability over time was confirmed, which makes it possible to easily maintain a uniform emulsified state, such as the type and combination of surfactants and oily components. It became possible to reduce restrictions.

Furthermore, in each of the examples to which the emulsion was added, while providing moistness, smoothness and softness were improved on the basis of the evaluation point 2 equivalent to the case where the treatment agent was not used, and the emulsion was added to the treatment agent. The smoothness and softness were generally improved as compared with Comparative Example 1 in which only a moisturizer and water were not added and Comparative Example 2 in which an emulsifier was added alone. The stability with time was improved by the addition of both the oil-in-water type and the water-in-oil type emulsions, and tended to have excellent sensory characteristics such as moist feeling, softness, and smoothness.

Claims (5)

A method for producing a paper treating agent comprising a moisturizer as a main component,
A method for producing a paper treating agent, which comprises adding an emulsion (excluding silicone emulsion) and a surfactant. The method for producing a paper treating agent according to claim 1, wherein the ratio of the emulsion to the surfactant is 1:0.01 to 1000 in terms of effective components. The method for producing a paper treating agent according to claim 1, wherein the emulsion is at least one selected from cream, emulsion, liquid, and gel. The method for producing a paper treating agent according to claim 3, wherein the emulsion is creamy. A method for improving the texture of papers by treating the papers with the paper treating agent produced by the method according to claim 1.