JP4673497B2 - Water repellent polished cloth for leather - Google Patents

Description

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【発明の効果】
本発明の皮革用撥水艶出しクロスにおいては、１０万ｃｓ以上の高重合ジメチルポリシロキサン類とトリメチルシロキシケイ酸を必須成分とする撥水性成分を水に分散させた撥水艶出しクロス用処理剤を、不織布などの布帛に含浸させているので、皮革表面、特に革靴に付着した泥、皮革製カバンや皮革製ソファなどに付着したホコリを予め落とすことなく拭き上げるだけで、皮革に付着した泥やホコリなどの汚れを除去できるだけではなく、皮革に撥水性を持たせ、同時に艶出し効果をも付与できるものである。また、ピロー包装などによって携帯に便利な形状とすることができ、外出先などで至極簡単に皮革の手入れを行なえる。[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a water-repellent polished cloth for leather. Specifically, the present invention relates to a water-repellent polished cloth for leather capable of simultaneously obtaining luster and water repellency in leather shoes and leather bags by an extremely simple method.
[0002]
[Prior art]
  Conventionally, a number of polishing agents for leather shoes for the purpose of protecting and polishing leather have been developed. For example, Japanese Patent Application Laid-Open No. 8-120226 and Japanese Patent Application Laid-Open No. 9-31415 disclose shoe creams that can provide glossing and a waterproof effect at the same time. In these shoe creams, gloss and waterproofness (water repellency) can be imparted to leather shoes by taking an appropriate amount of paste-like cream on a cloth, applying it to the shoe and polishing it.
[0003]
  However, since these are creamy, if the shoes are applied in a dirty state, dust and fine mud adhering to the shoes will result in a non-uniform coating film and a sufficient glossing effect. Therefore, it was necessary to remove dirt such as mud before applying the cream. In addition, these creams have an excellent glazing effect, but have not yet been obtained with sufficient water repellency.Furthermore, depending on the type of leather, the color may fade, and stains may appear. This is not preferable because it may be.
[0004]
  On the other hand, a number of waterproof sprays for the purpose of imparting water repellency have been provided in order to prevent contamination, discoloration, and loss of flexibility by preventing water penetration (see, for example, Japanese Patent No. 3028128). ), These waterproof sprays are not preferable because the spray liquid adheres to the inside of the shoe or is partially applied excessively to cause unevenness. In particular, in products that use fluorinated water repellents, the organic solvent used is harmful to the human body, and if used in a closed room, it will cause poisoning if it is not adequately ventilated. There was a danger. Furthermore, even in these waterproof sprays, sufficient waterproof effect cannot be obtained unless the mud adhering to the shoes is removed in advance for the reasons described above.
[0005]
  In addition, the above-mentioned shoe cream and waterproof spray do not have a well-maintained cloth and are not highly portable, and a water repellent glaze that can be easily cared for on the go is desired. It was where I was.
[0006]
  Japanese Patent Application Laid-Open No. 2000-256969 and Japanese Patent Application Laid-Open No. 2000-351961 describe cleaning and polishing of automobile coatings in which a nonwoven fabric is impregnated with a treatment agent in which a water repellent component is dispersed in water using an emulsifier. A water repellent cloth is disclosed. In the cloth, by simply wiping the surface of the automobile coating film once with the cloth, not only cleaning the surface of the automobile coating film but also polishing and water repellency can be simultaneously imparted to the surface of the automobile coating film. Moreover, since it is an emulsion, it is not necessary to use an organic solvent as a solvent, and there is almost no danger accompanying discoloration by a solvent or a large amount of solvent volatilization.
[0007]
  However, the cloth can give sufficient gloss and water repellency to resin surfaces such as automobile coatings and plastics, but it has a high water-repellent component absorbency such as leather. In this case, the component was absorbed in the leather, and it was difficult to remain on the surface, so that a sufficient glossing effect and water repellency could not be obtained.
[0008]
[Problems to be solved by the invention]
  The present invention has been made in view of the above-mentioned problems of the prior art, and is excellent in portability capable of simultaneously imparting luster and water repellency to leather shoes without removing dirt in advance, and has low adverse effects due to organic solvents. It is to provide care products for leather products.
[0009]
[Means for Solving the Problems]
  The water-repellent polished cloth for leather according to the present invention is:A wet fabric obtained by impregnating a cloth treating agent obtained by dispersing a water repellent component in water using a surfactant is filled in a container that prevents evaporation of moisture, or prevents evaporation of moisture. The water-repellent component is contained in the cloth treating agent in an amount of 1.0 to 15% by weight, and the water-repellent component is 100,000 cs or more.And at least one highly polymerized dimethylpolysiloxane having a viscosity of, and trimethylsiloxysilicic acid represented by the following formula 1When,It is characterized by including.
          [(CH3) 3SiO1 / 2] x. [SiO2] y (Formula 1)
  However, in Formula 1, X = 1 to 3 and Y = 0.5 to 8.
[0010]
  In the present invention, as the water repellent component,100,000 cs or moreIt is preferable to further contain one or more of high-polymerized dimethylpolysiloxanes having a viscosity of 1 and silicone compounds other than trimethylsiloxysilicic acid, waxes or wax-like substances.
[0011]
  In these water-repellent polished cloths for leather, it is preferable to use a non-woven fabric as the fabric, or it is preferable to use a fabric made of ultrafine fibers.
[0012]
  Furthermore, in this invention, it is preferable to impregnate the said cloth | flour processing agent 1.5 times or more and 3.5 times or less of the said fabric weight.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  The water-repellent polished cloth for leather of the present invention isA wet fabric obtained by impregnating a cloth treating agent obtained by dispersing a water repellent component in water using a surfactant is filled in a container that prevents evaporation of moisture, or prevents evaporation of moisture. The water-repellent component is contained in the cloth treating agent in an amount of 1.0 to 15% by weight, and the water-repellent component is 100,000 cs or more.And at least one highly polymerized dimethylpolysiloxane having a viscosity of, and trimethylsiloxysilicic acid represented by the following formula 1When,It is characterized by including.
          [(CH3) 3SiO1 / 2] x. [SiO2] y (Formula 1)
  However, in Formula 1, X = 1 to 3 and Y = 0.5 to 8.
[0014]
  Examples of the water-repellent component used in the present invention include silicone compounds, waxes or wax-like materials. Silicone compounds are preferably used in terms of satisfactorily satisfying all conditions such as water repellency, fixability and versatility.Viscosity 100,000cs or moreHighly polymerized dimethylpolysiloxanes are used as essential components. in this case,Viscosity 100,000cs or moreBy using the highly polymerized dimethylpolysiloxanes ofCross treatment agentThe viscosity of the water-repellent component separated from the water increases, it becomes difficult to soak into the leather, and the water-repellent component tends to remain on the leather. As a result, not only can dirt attached to the leather be washed away, but a firm water-repellent film is formed..
[0015]
  As the highly polymerized dimethylpolysiloxane, modified dimethylpolysiloxane obtained by modifying a part of dimethylpolysiloxane with an organic functional group or the like can also be used. These modified dimethylpolysiloxanes can improve glossiness, impart antifouling properties, improve fixability, and the like by the introduced organic functional group. Examples of the modified dimethylpolysiloxane include amino-modified dimethylpolysiloxane, alkyl-modified dimethylpolysiloxane, alkylaralkyl-modified dimethylpolysiloxane, fluorine-modified dimethylpolysiloxane, epoxy-modified dimethylpolysiloxane, alkoxy-modified dimethylpolysiloxane, and carboxy-modified dimethylpolysiloxane. Siloxane, methacryloxy modified dimethylpolysiloxane, ester modified dimethylpolysiloxane, amide modified dimethylpolysiloxane, polyether modified dimethylpolysiloxane, alcohol modified dimethylpolysiloxane, phenol modified dimethylpolysiloxane, methylphenyl modified dimethylpolysiloxane, methylhydrogen modified Dimethylpolysiloxane, mercapto-modified dimethylpolysiloxane, etc. It is below. These dimethylpolysiloxanes may be produced by any method such as emulsion polymerization.
[0016]
  Among these, amino-modified dimethylpolysiloxane having polar groups, carboxy-modified dimethylpolysiloxane, alkoxy-modified dimethylpolysiloxane, ester-modified dimethylpolysiloxane, etc. have good fixability to leather, and when combined with other highly polymerized dimethylpolysiloxane. Thus, it is possible to form a long-lasting water-repellent coating with a synergistic effect.
[0017]
  The present inventionViscosity 100,000cs or moreThese highly polymerized dimethylpolysiloxanes are essential components.,In addition, trimethylsiloxysilicic acid represented by the above general formula (Formula 1) is an essential component. This trimethylsiloxysilicic acid is generally used as a solution in a non-volatile oil component. As such a nonvolatile oil component, dimethylpolysiloxane or a modified product thereof or various mineral oils are used. Such a solution of trimethylsiloxysilicic acid stays on the fiber surface without being cured even when impregnated into the fiber, and appropriately migrates from the impregnated fabric to the leather surface, and adheres to the leather surface uniformly. A film can be formed. Moreover, the obtained water-repellent coating has excellent performance. in this way,Viscosity 100,000cs or moreWhen used in combination with the above-mentioned highly polymerized dimethylpolysiloxane, it is possible to give an excellent gloss to the leather surface and to form a good water-repellent coating.
[0018]
  Furthermore, in the present invention, it is preferable to use other water-repellent components in combination with the highly polymerized dimethylpolysiloxanes and trimethylsiloxysilicic acid in terms of further improving the water repellency. Examples of the water repellent component include silicone compounds, waxes or wax-like substances other than the above essential components. As a silicone compound,Viscosity less than 100,000 csAnd the above-mentioned various modified dimethyl-modified polysiloxanes. In addition to these silicone compounds, natural or synthetic waxes or wax-like substances conventionally used as polishes can also be used. For example, carnauba wax, candelilla wax, rice wax, wood wax, beeswax, whale wax, lanolin and derivatives thereof, hydrogenated castor oil, fatty acids and derivatives thereof, paraffin wax and derivatives thereof, ozokerite, ceresin, microcrystalline, polyethylene wax and Examples thereof include Fischer-Tropsch wax, polypropylene wax, montan wax, and derivatives thereof. Among them, paraffin wax, polyethylene wax, polypropylene wax, microcrystalline wax and the like which are hydrocarbon waxes are particularly preferable because of their good water repellency. Further, these waxes or wax-like materials can not only form a water repellent coating on the leather surface but also restore the leather flexibility lost over time. These silicone compounds and waxes are blended in an amount of 0.1 to 3.0 parts by weight, preferably 0.2 to 1.5 parts by weight, in 100 parts by weight of the treatment agent. In particular, if too much wax or wax-like material is added, it will become whitish when the leather is wiped off..
[0019]
  At this time, a commercially available product in which two or more of these water repellent components are mixed in advance or emulsified with a surfactant, for example, the above-mentioned trimethylsiloxysilicic acid dissolved in liquid dimethylpolysiloxane or cyclic silicone, and further A solution obtained by emulsifying the above solution in water with a surfactant, or a solution obtained by previously emulsifying amino-modified dimethylpolysiloxane in water with a surfactant can also be used.
[0020]
  The water repellent component is used as a cross-treating agent which is an emulsion and dispersed in water together with a surfactant. In this case, the surfactant is suitably used as long as it is a so-called emulsifier, and is not particularly limited as long as it has an emulsifying action, and various surfactants can be mentioned. The surfactant may be any of anionic, cationic, nonionic and amphoteric surfactants, such as higher fatty acid salts such as oleic acid, alkylbenzene sulfonates, alkyl sulfate esters. Anionic surfactants represented by polyoxyalkylsulfuric acid ester salts, Na, K, Li, ammonia, morpholine, alkanolamine salts of alkanesulfonic acid, such as polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, Sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyhydric alcohol fatty acid ester, polyoxyethylene alkylamine, polyoxyethylene fatty acid ester, alkyl glycoside, oxyethyleneoxypropylene block polymer Nonionic surfactants typified by mer, fatty acid alkanolamides, amine oxides, polyoxyethylene derivatives, for example, cationic surfactants typified by alkylamine salts, quaternary ammonium salts, etc., such as alkyl betaines The amphoteric surfactant represented can be mentioned.
[0021]
  These surfactants only need to have an amount for emulsifying the water-repellent component contained in the treatment agent, and generally 0.1 to 5.0 parts by weight, preferably 0.1, in 100 parts by weight of the treatment agent. -2.0 weight part may be sufficient. If the amount is less than 0.1 part by weight, the water-repellent component cannot be sufficiently emulsified and separated, resulting in poor stability and poor fabric impregnation. On the other hand, even if it exceeds 5.0 parts by weight, the emulsifiability is not a problem, but the fixability to leather becomes worse and the water repellency is also lowered. Moreover, since sustainability also falls, it is not preferable. When using a water repellent component preliminarily emulsified in water by a surfactant, care must be taken not to deteriorate the fixability and water repellency to the coating film. Moreover, since these surfactants also act as a cleaning agent that easily removes dirt on the leather surface in addition to the function as an emulsifier, dirt is more easily removed than water alone.
[0022]
  By using these, a cross-treatment agent that is an emulsion can be obtained by a conventional method. This treatment agent is generally used as a polishing polish for leather, a cleaning aid, an ultraviolet absorber, a plant-based agent. Components such as oils and fats, animal fats and oils, synthetic resins such as urethane resins and acrylic resins, preservatives, antioxidants, abrasives, lubricants, fragrances, and coloring agents may be blended as necessary.
[0023]
  The water-repellent polished cloth for leather according to the present invention is obtained by immersing a fabric in the cloth treating agent in which the water repellent component is dispersed in water with a surfactant. At this time, the water repellent component is 1.0 to 15 weight in the cloth treating agent (liquid).%, GoodPreferably, it is adjusted to 1.5 to 10.0% by weight. If the amount is less than 1.0% by weight, sufficient water repellency cannot be imparted to the leather. If the amount exceeds 15% by weight, the water-repellent component is excessively applied to the leather, and unevenness is likely to occur. The water repellent component is set in the above range by combining the highly polymerized dimethylpolysiloxane with trimethylsiloxysilicic acid and other water repellent components. In this case, the highly polymerized dimethylpolysiloxane is at least 0.5% by weight, It is preferable to adjust so that it may contain 1.0 weight% or more preferably. Trimethylsiloxysilicic acid is also preferably contained in an amount of at least 0.2% by weight, preferably 0.3% by weight or more, but can be appropriately adjusted depending on the relationship with other water-repellent components.
[0024]
  The fabric may be any of woven fabrics and knitted fabrics made of cotton, polyester, polyethylene, rayon, etc., or various non-woven fabrics obtained from polyester, polyethylene, pulp, rayon, etc., and will be a so-called chemical cloth base fabric. Any material can be used without particular limitation. Among these, a fabric using both lipophilic fibers and hydrophilic fibers is preferably used, such as a blended nonwoven fabric of polyester and rayon. That is, it is desirable to use a fabric using lipophilic fibers in that the water-repellent component can be retained to some extent and the impregnated water-repellent component comes out little by little and can be uniformly applied on the leather evenly. In the case of a fabric using oleophilic fibers alone, the absorbability and retention of the cloth treating agent are deteriorated, and drying is immediately caused. As a result, the water-repellent coating cannot be sufficiently formed, and dirt such as mud adhering to the leather cannot be removed. On the contrary, when hydrophilic fibers are used alone, the absorbability and retention of the cloth treating agent is good, but the water repellent component is excessively processed on the leather surface, resulting in unevenness. It is easy and not preferable. Accordingly, it is preferable to use a mixture of both. At this time, the mixing ratio of the two may be appropriately determined according to the purpose of use, the composition of the cloth treating agent, and the like.
[0025]
  In a more preferred embodiment, a fabric having a three-layer structure in which a lipophilic fiber layer made of only lipophilic fibers is laminated on both sides of a hydrophilic fiber layer made of only hydrophilic fibers is used. That is, with such a three-layer structure, the water-repellent component gradually exudes from the lipophilic fiber layer in the outer layer, and the impregnation liquid is supplied from the hydrophilic fiber layer in the inner layer to the lipophilic fiber layer in the outer layer. This is because the reduction of the impregnating liquid contained in the lipophilic fiber layer can be prevented..
[0026]
  Furthermore, it is preferable to use ultrafine fibers alone or in combination with ordinary fibers for the above-mentioned fabrics, particularly nonwoven fabrics. The ultra-fine fiber has high dirt scraping performance and water and dirt retention capability due to its shape, which makes it easy to absorb dirt and to remove dirt stuck to the leather surface. Examples of the ultrafine fibers include so-called split fibers in which two or more kinds of materials are used to form one splittable composite fiber, and then the composite fiber is split into a plurality of fibers. A thickness of less than 0.5 denier is preferably used.
[0027]
  The cloth may be impregnated with an appropriate amount of the cloth treating agent as necessary. However, in the present invention, the cloth treating agent is impregnated with a weight of 1.5 to 3.5 times the weight of the cloth. It is preferable to impregnate a cross-treatment agent of 2.0 times or more and 3.0 times or less. When the amount of impregnation is less than 1.5 times the weight of the fabric, a sufficient amount of water repellent components and the like do not adhere to the leather surface, which is not preferable because gloss and water repellency deteriorate. On the other hand, if it exceeds 3.5 times, a sufficient amount of water repellent component is given to the leather surface, so there is no problem with gloss and water repellency, but the component is excessively applied to the leather surface At the same time, there is a lot of liquid residue on the leather surface, making it easier to create unevenness.
[0028]
  By wiping the leather with the cloth obtained in this way, the treatment agent impregnated in the cloth comes out of the fabric and the mud and dust adhering to the leather surface such as leather shoes are moistened, and the wet mud and dust are rubbed by the cloth. Be dropped. And the water repellent component which came out of cloth (cloth) with water isolate | separates from water, and adheres on leather, and a water repellent film is formed. Further, moisture remaining after being repelled by the formed water-repellent coating is again absorbed by the cloth. By diluting the treatment agent in which the absorbed moisture is contained in the cloth, the water repellent component is easily extracted from the cloth. A water-repellent coating is formed on the leather surface while repeating these cycles.
[0029]
  Further, the water-repellent polished cloth for leather of the present invention is not only genuine leather, that is, natural leather (animal skin such as cow, pig, horse, sheep, kangaroo), but also various nonwoven fabrics and woven fabrics such as urethane resin. It is also applied to so-called artificial leather and synthetic leather impregnated with leather. Generally, their surface is composed of leather finishing agents (synthetic resins such as urethane, vinyl acetate, and acrylic, and casein and wax). ) Is used for those that have been painted and have a silver-like appearance. In addition, even if the surface is roughened and matted, it can be applied as long as it is treated with the leather finishing agent, but the appearance of suede, velor, backskin, etc. buffed by buffing the leather surface It is not preferable for those having it. In addition to the leather, it can also be used for so-called vinyl chloride leather having a silver-like appearance (the surface of a woven fabric made of polyester or other fibers coated with a vinyl chloride resin).
[0030]
  Thus, in the present invention, in particularViscosity 100,000cs or moreBy using this highly polymerized dimethylpolysiloxane, the viscosity of the water-repellent component separated from the treating agent is increased, and the treated water-repellent component is less likely to penetrate into the leather and the water-repellent component tends to remain on the leather. As a result, a sufficient amount of the water-repellent component remains on the coating, and a firm water-repellent coating is formed. Furthermore, by using trimethylsiloxysilicic acid represented by the above formula 1 as an essential component, it is possible not only to form a film having further excellent water repellency, but also to impart excellent gloss.
[0031]
  Since the water-repellent polished cloth according to the present invention is used in a wet state, if it is left outside, the water evaporates and cannot be used. For this reason, containers that prevent evaporation of moisture, such as commercially available wet tissues, such as plastic containers, or pillow packaging (made up of resin films such as polyethylene and polyester, aluminum foil, aluminum vapor deposition films, etc. A packaging film that is heat-sealed into a bag shape). At this time, the amount of the cross-treating agent to be impregnated is set in the above range, but depending on the purpose of use, for example, for leather shoes where there is a high possibility of mud adhesion, the amount of impregnation is increased or dirt due to dust The amount of impregnation may be reduced for applications such as bags and sofas.
[0032]
  Thus, by wiping off the leather without removing mud etc. adhering to the leather as it is, with the water repellent glazing cloth for leather according to the present invention taken out from the container (packaging), It removes dirt such as mud and dust adhering to the leather and gives water repellency and glossing effect by wiping once. Further, the water-repellent polished cloth for leather of the present invention is water-dispersible, so not only the mud adhering to the leather is targeted, but also electrically neutralizing dust charged by static electricity, It also makes it easier to pick up dust. Therefore, the present invention is not limited to leather shoes, and can be widely used for the purpose of imparting water repellency and gloss to the leather surface as described above. Further, after wiping with the cloth, the glazing effect can be further exhibited by wiping with a dry cloth or the like. In addition, since a water-dispersible treatment agent is used, an organic solvent is sprayed into the air like a waterproof spray, and it does not adversely affect the human body, and adverse effects such as discoloration due to the solvent used such as shoe cream. There is almost no.
[0033]
【Example】
  Next, based on the water-repellent polished cloth for leather which is an embodiment of the present invention, the present invention will be described in more detail. Needless to say, the present invention is not limited to these examples. The drugs used are listed below.
[0034]
  (1) Water repellent component
  (A) Trimethylsiloxysilicic acid cyclic silicone solution emulsion (X-52-1451): manufactured by Shin-Etsu Chemical Co., Ltd., 50.0 wt% concentration of trimethylsiloxysilicic acid dissolved in cyclic silicone, nonionic interface Emulsified in water with an activator.
  (B) Dimethylpolysiloxane solution emulsion of trimethylsiloxysilicic acid (R-2701): Asahi Kasei Wacker Silicone Co., Ltd., viscosity 2000 cs (25 ° C.), concentration of 40.0 wt% trimethylsiloxysilicic acid dimethyl having a viscosity of 350 cst What was dissolved in polysiloxane and emulsified in water with a nonionic surfactant.
  (C) Dimethyl silicone oil emulsion (BY-22-007): A product obtained by emulsifying dimethyl silicone oil having a concentration of 50 wt% and a viscosity of 350 cst in water with a nonionic surfactant, manufactured by Toray Dow Corning Silicone.
  (D) Paraffin wax emulsion (Emaster 0136): A product obtained by emulsifying paraffin wax with a concentration of 40.0 wt% and a melting point of 55 ° C. in water with a nonionic surfactant, manufactured by Nippon Seiwa Co., Ltd.
  (E) Microcrystalline wax emulsion (Emaster 0001): manufactured by Nippon Seiwa Co., Ltd., concentration 40.0 wt%, microcrystalline wax emulsified in water with a nonionic surfactant.
  (F) Highly polymerized methylpolysiloxane (SH8710): Made by Toray Dow Corning Silicone Co., Ltd., with a concentration of 38 wt%, a methylpolysiloxane having a viscosity of 100,000 cs made by an emulsion polymerization method in water with an anionic surfactant Emulsified.
  (G)Highly polymerized methylpolysiloxane (SM8701): Made by Toray Dow Corning Silicone Co., Ltd., with a concentration of 30 wt%, and a polymethylsiloxane having a viscosity of 1 million cs made by emulsion polymerization method, emulsified in an anionic surfactant in water .
  (H)Amino-modified silicone emulsion (polon MF-14): Shin-Etsu Chemical Co., Ltd .: Concentrated 15 wt%, amino-modified dimethylpolysiloxane emulsified in water with a nonionic surfactant.
  (I)Epoxy-modified silicone emulsion (polon MF-18): Shin-Etsu Chemical Co., Ltd .: concentration 38 wt%, epoxy-modified dimethylpolysiloxane emulsified in water with a nonionic surfactant.
[0035]
  Example 1
                  Ingredient name Compounding amount (wt%)
  Of trimethylsiloxysilicate
        Cyclic silicone solution emulsion (X-52-1451) 1.0
  Dimethyl silicone oil emulsion (BY-22-007) 4.0
  Highly polymerized methylpolysiloxane emulsion (SH8710) 3.0
  Remaining amount of ion-exchanged water
            Total 100.0
  The above components were mixed and stirred uniformly to obtain a cloth treating agent. 12.6 g of this cloth treating agent is impregnated into a non-woven fabric (weight ratio: 70 g / m @ 2, 6.3 g) obtained by blending rayon and polyester cut to a size of 30 cm.times.30 cm (weight ratio: 50:50), and polyethylene and aluminum. Pillow-wrapped with a laminated film of foil (cross treatment agent weight / nonwoven fabric weight = 2.0).
[0036]
  (Example 2)
                  Ingredient name Compounding amount (% by weight)
  Of trimethylsiloxysilicate
        Dimethylpolysiloxane solution emulsion (R-2701) 6.0
  Highly polymerized methylpolysiloxane emulsion (SM8701) 2.0
  Microcrystalline wax emulsion (Emaster 0001) 1.0
  Remaining amount of ion-exchanged water
            Total 100.0
  The above components were mixed and stirred uniformly to obtain a cloth treating agent. Three-layer spunlace nonwoven fabric (weight per unit area: 70 g / m 2, 6) using 18.9 g of this cross-treating agent, cut into a 30 cm × 30 cm center layer with rayon as the outer layer and nylon and polyester superfine fibers as the outer layer 3 g) and pillow-wrapped with a laminated film of polyethylene and aluminum foil (weight of cloth treating agent / weight of nonwoven fabric = 3.0).
[0037]
  Example 3
  21.6 g of the cloth treating agent obtained in Example 4 was impregnated into a spunlace nonwoven fabric (weight per unit of 60 g / m @ 2, 5.4 g) using nylon and polyester ultrafine fibers cut to a size of 30 cm.times.30 cm. Then, it was pillow-wrapped with a laminated film of polyethylene and aluminum foil (weight of cloth treating agent / weight of non-woven fabric = 4.0).
[0038]
  (Comparative Example 1)
  Spunlace using fibers in which 10.8 g of the cloth treating agent obtained in Example 2 was cut into a size of 30 cm × 30 cm and the outer layer of nylon / polyester ultrafine fibers and acrylic were mixed (weight ratio 50:50). It was impregnated with a non-woven fabric (weight per unit area: 100 g / m @ 2, 9.0 g) and pillow-wrapped with a laminated film of polyethylene and aluminum foil (cross-treatment agent weight / non-woven fabric weight = 1.2).
[0039]
  (Comparative Example 2)
  Of trimethylsiloxysilicate
        Cyclic silicone solution emulsion (X-52-1451) 6.0
  Ion exchange water
            Total 100.0
  The above components were mixed and stirred uniformly to obtain a cloth treating agent. 12.6 g of this cloth treating agent is impregnated into a non-woven fabric (weight ratio: 70 g / m @ 2, 6.3 g) obtained by blending rayon and polyester cut to a size of 30 cm.times.30 cm (weight ratio: 50:50), and polyethylene and aluminum. Pillow-wrapped with a laminated film of foil (cross treatment agent weight / nonwoven fabric weight = 2.0).
[0040]
  (Comparative Example 3)
                  Ingredient name Compounding amount (wt%)
  Of trimethylsiloxysilicate
        Cyclic silicone solution emulsion (X-52-1451) 3.0
  Dimethyl silicone oil emulsion (BY-22-007) 6.0
  Remaining amount of ion-exchanged water
            Total 100.0
  The above components were mixed and stirred uniformly to obtain a cloth treating agent. Spunlace nonwoven fabric (weight per unit area 50 g / m @ 2, 4.5 g) obtained by blending 9.0 g of this cloth treating agent into ultrafine fibers of polyethylene and polyester cut into a size of 30 cm.times.30 cm and rayon (weight ratio 50:50). ) And then pillow-wrapped with a laminated film of polyethylene and aluminum foil (weight of cloth treating agent / weight of nonwoven fabric = 2.0).
[0041]
  (Comparative Example 4)
                  Ingredient name Compounding amount (wt%)
  Dimethyl silicone oil emulsion (BY-22-007) 6.0
  Highly polymerized methylpolysiloxane emulsion (SH8710) 2.0
  Remaining amount of ion-exchanged water
            Total 100.0
  The above components were mixed and stirred uniformly to obtain a cloth treating agent. A spunlace nonwoven fabric (weight per unit area: 40 g / m 2, 7.2 g) obtained by blending 17.3 g of this cloth treating agent into a super-fine fiber of nylon and polyester cut to a size of 30 cm × 30 cm and polyester (weight ratio 50:50). ) And pillow-wrapped with a laminated film of polyethylene and aluminum foil (cross-treatment agent weight / non-woven fabric weight = 2.4).
[0042]
  (Comparative Example 5)
                  Ingredient name Compounding amount (wt%)
  Microcrystalline wax emulsion (Emaster 0001) 1.0
  Dimethyl silicone oil emulsion (BY-22-007) 6.0
  Remaining amount of ion-exchanged water
            Total 100.0
  The above components were mixed and stirred uniformly to obtain a cloth treating agent. A spunlace nonwoven fabric (weight per unit area: 70 g / m @ 2, 6.3 g) obtained by blending 18.9 g of this cloth treating agent into ultrafine fibers of polyethylene and polyester cut into a size of 30 cm.times.30 cm and rayon (weight ratio 50:50). ) And pillow-wrapped with a laminated film of polyethylene and aluminum foil (weight of cloth treating agent / weight of nonwoven fabric = 3.0).
[0043]
  (Comparative Example 6)
  A commercially available O / W type liquid shoe cream (manufactured by Columbus, trade name “Night Liquid”) mainly composed of wax and fat was used.
[0044]
  (Comparative Example 7)
  A water- and oil-repellent spray (manufactured by Columbus, trade name “AMeDAS”) mainly composed of a fluororesin and a petroleum solvent was used.
[0045]
  〔Evaluation test〕
  Using the water-repellent polished cloths obtained above, the following evaluation tests were conducted on the dirt removal property, water repellency imparting performance, and polishing effect of leather. The usability was also evaluated. Leather includes commercially available leather shoes and black cowhide (the surface is made silvery with a leather finish mainly composed of acrylic resin), and black artificial leather (extra fine fibers composed of nylon and polyester). After impregnating the used non-woven fabric with urethane resin, etc., the surface is further made silver with a leather finish composed mainly of urethane resin) and black PVC leather (woven fabric surface composed of polyester) Was treated with a vinyl chloride resin and the surface was made to be a silver surface), and was wiped off with each water repellent polished cloth obtained above, and evaluated based on the following evaluation criteria. For leather shoes, those used under normal conditions for one month were used, and for other leathers, those cut to 10 cm × 15 cm and left for one week outdoors were used. In addition, the shoe cream was used by removing an appropriate amount from a cotton towel without removing the stain, and the water / oil repellent spray was sprayed in a dirty state.
[0046]
  (Removability of dirt)
  “◎” indicates that the dirt attached to the leather surface is removed very well, “○” indicates that it is removed well, “△” indicates that it has been removed well, and “×” indicates that it is almost not removed. .
[0047]
  (Water repellency imparting performance)
  The water-repellent state immediately after treatment The surface of the polka dots formed by dripping water on the leather surface (in the case of leather shoes) is visually judged. However, when the polka dots were deformed, the evaluation was “◯”, when the repellency was slightly dull, “△”, and when the polka dot was hardly repelled, the evaluation was “x”.
  Water repellency Persistence of water repellency is the polka dots made by wiping the leather surface with a dry cloth after 1 month of treatment, and then dripping water onto the leather surface (the upper part in the case of leather shoes). Judgment is made by visual inspection, and it is “◎” if the ball is played well as a polka dot, and if there is a repelling, “○” if the polka dot is deformed, or “△” if the repelling is dull. In the case of almost no repelling, the evaluation was “x”.
[0048]
  (Glossing effect)
  After wiping the leather surface with each water-repellent polishing cloth, visually inspect the surface, and when it is excellent glossiness, it is “◎”, and when it is good, “○” Was evaluated as “△”, and the case where there was almost no gloss was evaluated as “x”.
[0049]
  (Feeling of use)
  When wiping with each water-repellent polishing cloth, if it is wiped lightly and a sufficient amount of dirt is removed and a uniform glossy water-repellent coating is formed, it is marked with “◎”. When the glossy water repellent film is formed, it is “○”, and the dirt is removed by wiping it to some extent, but when the glossy water repellent film is unevenly formed, “△”, the dirt is removed even if it is wiped to some extent. The case where the glossy water-repellent coating was not uniform was evaluated as “x”.
[0050]
  〔Test results〕
  These test results are shown in Tables 1 to 4. As can be seen from each table, when the water-repellent polished cloth of the present invention is used, dirt such as mud is removed and a sufficient film is formed by wiping the dirt adhered to the leather with the cloth without removing it in advance. It was possible to form, and good glossiness and water repellency could be obtained. However, the cloth of Comparative Example 1 impregnated with a relatively small amount of cloth treating agent with respect to the fabric weight was poor in water repellency and sustainability. In addition, the shoe cream was poor in water repellency and could not remove stains, and the spray did not remove the stains, and of course, no polishing effect was obtained.
[0051]
[Table 1]

[0052]
[Table 2]

[0053]
[Table 3]

[0054]
[Table 4]

[0055]
【The invention's effect】
  In the water-repellent polished cloth for leather of the present invention,100,000 cs or moreSince the non-woven fabric or the like is impregnated with a water-repellent polishing cloth treating agent in which water-repellent components having essential components of highly polymerized dimethylpolysiloxanes and trimethylsiloxysilicate are dispersed in water, the leather surface, In particular, it is possible not only to remove dirt adhering to the leather, but also to remove the dirt such as mud and dust adhering to the leather. At the same time, a glossing effect can be imparted. In addition, it can be made into a shape that is convenient to carry by pillow wrapping, etc., and leather can be cared for very easily when away from home.

Claims (5)

A wet fabric obtained by impregnating a cloth treating agent obtained by dispersing a water repellent component in water using a surfactant is filled in a container that prevents evaporation of moisture, or prevents evaporation of moisture. Packaged in a state,
The water repellent component is contained in the cloth treating agent in an amount of 1.0 to 15% by weight,
The water repellent component
At least one highly polymerized dimethylpolysiloxane having a viscosity of 100,000 cs or more;
Trimethylsiloxysilicic acid represented by the following formula 1 ,
Water-repellent polished cloth for leather, characterized by containing
[(CH3) 3SiO1 / 2] x. [SiO2] y (Formula 1)
However, in Formula 1, X = 1 to 3 and Y = 0.5 to 8. The water-repellent component further contains one or more of any of the above-mentioned highly polymerized dimethylpolysiloxanes having a viscosity of 100,000 cs or more and silicone compounds other than trimethylsiloxysilicic acid, waxes or wax-like substances. The water-repellent polished cloth for leather according to claim 1.   The water-repellent polished cloth for leather according to claim 1 or 2, wherein the fabric is a nonwoven fabric.   The water-repellent polished cloth for leather according to claim 1, wherein the fabric is made of ultra-fine fibers.   5. The water-repellent polished cloth for leather according to claim 1, wherein the cloth treating agent is impregnated with 1.5 to 3.5 times the weight of the fabric. .