JP6959748B2 - Water permeable agent - Google Patents

Description

The present invention relates to a water permeable agent having excellent initial water permeability, durable water permeability and anti-wetting property. Specifically, the present invention is water permeable to disposable diapers, sanitary napkins, wet sheets, wipers, filters, toilet sheets for pets and the like. Regarding water permeable agents for the required thermoplastic synthetic fibers.

Since thermoplastic synthetic fibers such as polyolefin-based and polyester-based fibers are hydrophobic, a method for imparting water permeability has been conventionally disclosed. In particular, when wearing sanitary materials such as disposable diapers and sanitary napkins, the surface materials of these products are easily wet, and the wettability is exhibited in a short time in order to avoid discomfort due to sweating, urine, body fluids, etc. This is very important. Furthermore, it is considered important that the liquid once absorbed by the absorber does not return to the surface material, that is, there is no rewetting from the absorber. Therefore, it is usually required that the fibers constituting the surface materials of these products, for example, polyolefin fibers, absorb the liquid in a short time. In addition, disposable diapers, etc. are worn by infants, the elderly, the sick, etc. who cannot handle excrement by themselves, and by increasing the absorption capacity and improving the anti-wetting property, one wear does not necessarily mean one excrement. Is not always treated, and durable water permeability is strongly required for surface materials such as these sanitary materials.

Conventionally, as a method for imparting water permeability to fibers such as the above-mentioned surface material, the methods shown in the following (1) to (3) are known.
(1) A method in which a water permeable agent is kneaded into a hydrophobic resin and a water permeable fiber polymer is obtained from the spun fibers. Examples of this method include a method of mixing polyethylene glycol with a polymer, melt-kneading and then producing fibers (Patent Document 1), and a method of mixing sodium alkylsulfonic acid salt to form fibers (Patent Document 2). be.
(2) A method for adhering a water-permeable low molecule compound. Examples of this method include a method of attaching a polyoxyalkylene-modified silicone to a polyolefin fiber (Patent Document 3), a method of attaching a polyglycerin fatty acid ester (Patent Document 4), and two types of amphoteric surfactants to an alkyl phosphate ester salt. (Patent Document 5) and the like.
(3) A method of performing physical treatment such as plasma treatment and corona discharge treatment. As this method, there is a method of carbonylating the surface by exciting oxygen with high frequency energy under reduced pressure (Patent Document 6).

Japanese Unexamined Patent Publication No. 49-529 Japanese Unexamined Patent Publication No. 5-272006 Japanese Unexamined Patent Publication No. 1-148879 Japanese Unexamined Patent Publication No. 2-216265 Japanese Patent Application Laid-Open No. 2000-170076 Japanese Unexamined Patent Publication No. 50-73976

However, in the method (1) above, if a water permeable agent is added to the hydrophobic resin until it exhibits sufficient water permeability, the productivity is significantly reduced due to yarn breakage during spinning due to the problem of compatibility with the resin. do. Even if the water permeable agent bleeds out to the fiber surface at a relatively early stage, there is a problem that the water permeability does not last for a long period of time and the durability is insufficient. Further, even if the method (2) above is simple and has excellent initial water permeability, once the liquid has passed through, the water permeability is significantly reduced after it is dried, and it takes a very long time to obtain a dry touch. There is a problem that the anti-wetting property and the durable water permeability are insufficient. The method (3) above is economical because the water permeability tends to deteriorate over time due to changes in the polar groups generated by the modification over time, and a special device is used for the modification and a large amount of heat and electricity are required. Not the target.

The subject of the present invention is to solve the conventional problems when used as a surface material for sanitary materials such as disposable diapers and sanitary napkins, and is excellent in all of initial water permeability, durable water permeability, and anti-wetting property. It is an object of the present invention to provide a water permeable agent having both performance.

As a result of diligent research to achieve the above problems, the present inventors have excellent initial water permeability with the component (A) which has an affinity for hydrophobic fibers and is excellent in durable water permeability and anti-wetting property. The synergistic effect is exhibited by the combination with the component (B), and as a result, the optimum water permeable agent having all of the performances of initial water permeability, durable water permeability, and anti-wetting property is found, and the present invention is completed. It came to.

That is, the present invention is a water permeable agent containing the component (A) represented by the following general formula (1) and the component (B) represented by the following general formula (2) as essential components.

（式中、Ｒ_１は炭素数７〜２１のアルキル基又はアルケニル基、Ａ_１Ｏは炭素数２のオキシエチレン基、Ａ_２Ｏは炭素数３〜４のオキシアルキレン基を表し、ｘは１〜２０の整数、ｙは１０〜６０の整数である。Ａ_１Ｏ及びＡ_２Ｏについてオキシアルキレン基の付加順は限定しておらず、付加する際の付加方法はブロック付加、又はランダム付加のいずれであってもよい。）

(In the formula, R ₁ represents an alkyl group or an alkenyl group having 7 to 21 carbon atoms, A ₁ O represents an oxyethylene group having 2 carbon atoms, A ₂ O represents an oxyalkylene group having 3 to 4 carbon atoms, and x is 1. An integer of ~ 20 and y are integers of 10 to 60. The _{order of addition of oxyalkylene groups for A 1} O and A ₂ O is not limited, and the addition method at the time of addition is block addition or random addition. It may be either.)

（式中、Ｒ_２は炭素数６〜１０のアルキル基、Ａ_３Ｏは炭素数２のオキシエチレン基、ｚは１〜１０の整数、ａは１又は２、Ｍは水素原子、アルカリ金属原子、アルカリ土類金属原子、アンモニウム又は有機アンモニウムを表す。）

(In the formula, R ₂ is an alkyl group having 6 to 10 carbon atoms, A ₃ O is an oxyethylene group having 2 carbon atoms, z is an integer of 1 to 10, a is 1 or 2, M is a hydrogen atom, and an alkali metal atom. , Represents an alkaline earth metal atom, ammonium or organic ammonium.)

The weight ratio <(A) / (B)> of the component (A) to the component (B) of the water permeable agent is preferably 90/10 to 40/60.

The total weight ratio of the component (A) and the component (B) to the total non-volatile content of the water permeable agent is preferably 70 to 100% by weight.

By applying the water-permeable agent of the present invention to the fiber, it is possible to impart excellent performance to the fiber in terms of initial water permeability, durable water permeability, and anti-wetting property. Therefore, the water permeable agent of the present invention can be suitably used as a water permeable agent for polyolefin-based non-woven fabrics used for disposable diapers, sanitary products, and the like.

The water permeable agent of the present invention is characterized by containing a component (A) which is a polyoxyalkylene monofatty acid ester and a component (B) which is a polyoxyethylene alkyl ether phosphoric acid ester or a salt thereof as essential components. Is. Further, the weight ratio <(A) / (B)> of the component (A) to the component (B) is 90/10 to 40/60, and the component (A) accounts for the entire non-volatile content of the water permeable agent. The total weight ratio of the component (B) and the component (B) is 70 to 100% by weight.

Hereinafter, the contents of the present invention will be specifically described.
The component (A) represented by the general formula (1) is an important component in that it imparts durable water permeability and anti-wetting property to the fiber. R ₁ is an alkyl group or an alkenyl group having 7 to 21 carbon atoms, and is a heptyl group, an octyl group, a nonyl group, a decyl group, a decenyl group, an undecyl group, a dodecyl group, a tridecyl group, a tridecenyl group, a tetradecyl group, a tetradecenyl group, Examples thereof include a pentadecyl group, a hexadecyl group, a heptadecyl group, a heptadecenyl group, an octadecyl group, an isooctadecyl group, a nonadesyl group, a nonadesenyl group, an icosyl group and a henicosyl group.
When the number of carbon atoms of the alkyl group or the alkenyl group is less than 7, the affinity with the fiber is lost and the durable water permeability and the anti-wetting property are lowered. On the other hand, when the number of carbon atoms of the alkyl group or the alkenyl group exceeds 21, the water permeability itself becomes insufficient and durability cannot be obtained.

A ₁ O represents an oxyethylene group having 2 carbon atoms, and A ₂ O represents an oxyalkylene group having 3 to 4 carbon atoms. x is an integer of 1 to 20, preferably 2 to 18, and when the number of added moles exceeds 20, the water permeability increases, but the durable water permeability and the anti-wetting property decrease. If the number of added moles is less than 1, the water permeability itself cannot be sufficiently obtained. y is an integer of 10 to 60, preferably 15 to 50, and if the number of added moles is less than 10, durable water permeability cannot be obtained, and if it exceeds 60, the hydrophobicity becomes too strong and sufficient water permeability can be obtained. It disappears. The _{order of addition of oxyalkylene groups for A 1} O and A ₂ O is not limited, and the addition method at the time of addition may be either block addition or random addition. Further, the component (A) may be composed of one kind or two or more kinds.

Specific examples of the component (A) represented by the general formula (1) include polyoxyethylene polyoxypropylene monolauric acid ester, polyoxybutylene polyoxyethylene monopalmitic acid ester, and polyoxyethylene polyoxypropylene monoisostearic acid ester. , Polyoxypropylene polyoxyethylene monostearic acid ester, polyoxyethylene polyoxypropylene monooleic acid ester, polyoxypropylene polyoxyethylene monobehenic acid ester and the like. Among these, polyoxyethylene polyoxypropylene monostearic acid ester, polyoxypropylene polyoxyethylene monostearic acid ester, polyoxyethylene polyoxypropylene monoisostearic acid ester, polyoxypropylene polyoxyethylene monoisostearic acid ester, polyoxy Polyethylene polyoxypropylene monooleine ester, polyoxypropylene polyoxyethylene monooleic acid ester and the like are preferable.

The component (B) represented by the general formula (2) is an important component in that it imparts initial water permeability to the fiber. R ₂ is an alkyl group having 6 to 10 carbon atoms and may be distributed, and may be linear or branched, but having a branch improves the initial water permeability. Examples of the carbon number of the alkyl group _{as R 2} include a hexyl group, a heptyl group, an octyl group, a 2-ethylhexyl group, a nonyl group, a decyl group and the like. When the number of carbon atoms of the alkyl group is less than 6, stable initial water permeability cannot be exhibited. On the other hand, when the number of carbon atoms of the alkyl group exceeds 10, the hydrophobicity becomes strong and the initial water permeability is remarkably lowered.

A ₃ O is an oxyethylene group having 2 carbon atoms, and z is an integer of 1 to 10. z is more preferably 1 to 5, and even more preferably 1 to 3. If the number of oxyethylene groups is less than 1, the initial water permeability becomes insufficient. On the other hand, when the number of oxyethylene groups exceeds 10, it causes a decrease in the durable water permeability of the component (A). a represents 1 or 2, M represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, ammonium or organic ammonium. Further, the component (B) may be composed of one kind or two or more kinds.

Specific examples of the component (B) represented by the general formula (2) include polyoxyethylene hexyl ether phosphoric acid ester or a salt thereof, polyoxyethylene heptyl ether phosphoric acid ester or a salt thereof, polyoxyethylene octyl ether phosphoric acid ester or a salt thereof. Examples thereof include a salt, a polyoxyethylene 2-ethylhexyl ether phosphoric acid ester or a salt thereof, a polyoxyethylene nonyl ether phosphoric acid ester or a salt thereof, a polyoxyethylene decyl ether phosphoric acid ester or a salt thereof, and the like. Among these, polyoxyethylene octyl ether phosphoric acid ester or a salt thereof, polyoxyethylene 2-ethylhexyl ether phosphoric acid ester or a salt thereof and the like are preferable.

In order to fully exert the effect of the water permeable agent of the present invention, the weight ratio of the component (A) having excellent durability water permeability and anti-wetting property (A) to the component (B) having excellent initial water permeability <(A). / (B)> is preferably 90/10 to 40/60, and more preferably 85/15 to 50/50. When the weight ratio of the component (A) exceeds 90 and the weight ratio of the component (B) is less than 10, the initial water permeability becomes insufficient. Further, when the weight ratio of the component (A) is less than 40 and the weight ratio of the component (B) exceeds 60, the initial water permeability is slightly improved, but the durable water permeability and the anti-wetting property are remarkably lowered.

Further, in order to exhibit excellent performance in terms of initial water permeability, durable water permeability and anti-wetting property, the total weight ratio of the component (A) and the component (B) to the total non-volatile content of the water permeable agent is 70. It is preferably ~ 100% by weight, more preferably 80% by weight or more. The water permeable agent of the present invention may contain other components such as a penetrant, an emulsifier, an antistatic agent, an antifoaming agent, a pH adjuster, a preservative, an antioxidant, and an antibacterial agent, if necessary. When the total weight ratio of the component (A) and the component (B) to the total non-volatile content of the water permeable agent is less than 70% by weight, any or all of the initial water permeability, durable water permeability and anti-wetting property are performed. May not be fully exhibited.

The method for producing the water permeable agent of the present invention is not particularly limited, and a known method can be adopted.
The polyoxyalkylene monofatty acid ester of the component (A) can be produced, for example, by adding an alkylene oxide to a fatty acid under normal conditions. In that case, a polyoxyalkylene difatty acid ester (component (C)) is produced as a by-product, but the content thereof is preferably small. Specifically, the weight ratio <(A) / (C)> of the component (A) to the component (C) is preferably 50/50 to 100/0, preferably 60/40 to 100/0. It is more preferable if there is.

The polyoxyethylene alkyl ether phosphoric acid ester of the component (B) can also be produced by adding ethylene oxide to an aliphatic alcohol under normal conditions and then phosphorylating under normal conditions. After that, if neutralization is performed with a neutralizing agent, a phosphoric acid ester salt can be obtained.

Regarding the mixing of the component (A) and the component (B), both components are charged in a container and then uniformly mixed at a temperature of 40 to 60 ° C. The water permeable agent may contain water and / or a solvent for the purpose of improving the appearance stability of the water permeable agent itself and the solubility at the time of dilution in water or the like.

The water permeable agent of the present invention can be used as a thermoplastic synthetic fiber for polyolefin fiber, fibrillated polyolefin fiber, polyester fiber, nylon fiber, vinyl chloride fiber and the like. Among them, it is preferably used for polyolefin fibers, and is preferably used for polypropylene, polyethylene, polybutene-1, polymethylpentene, ethylene-propylene copolymer, ethylene-propylene-butene-1 copolymer, ethylene-vinyl alcohol copolymer, ethylene-. One or two or more kinds can be arbitrarily selected and used from a vinyl acetate copolymer, an ethylene-acrylic acid copolymer, an ethylene-methyl acrylate copolymer and the like.

Further, the water permeable agent of the present invention can be used for fabrics such as non-woven fabrics and woven and knitted fabrics. Non-woven fabrics include thermal-bonded non-woven fabrics, chemical-bonded non-woven fabrics, spunlaced non-woven fabrics, needle-punched non-woven fabrics and other non-woven fabrics mainly composed of staple fibers, spunbonded non-woven fabrics, melt-blow non-woven fabrics and other long-fiber non-woven fabrics, and wet non-woven fabrics produced by a wet fabrication method. , A non-woven fabric made of short fibers such as an air-laid non-woven fabric, or a laminate thereof can be determined according to the intended use.

The non-woven fabric to which the water permeable agent of the present invention is applied is a surface material that requires an absorber of sanitary materials such as disposable diapers and sanitary napkins, butt wipes, wet tissues, cosmetic cotton, wipers, filters, toilet sheets for pets, etc. Can be used for.

As a method of adhering the water permeable agent to the fiber, a method of applying the solution as a solution with a solvent such as water, a method of preparing a masterbatch or the like in advance, and a method of kneading with the resin at the time of producing the fiber may be used.

When the water permeable agent of the present invention is applied, a solution diluted with a solvent such as water or a stock solution can be attached to the fiber without dilution, and a spinning step, a drawing step, and a crimping step in producing the above-mentioned nonwoven fabric. Etc. may be used. As a method for adhering the water permeable agent, there are known methods such as a dipping method, a spraying method, and a coating method with a kiss coater or a gravure coater, usually using a solution diluted with a solvent such as water. In the case of an aqueous solution, it is diluted with water to 0.1 to 50% by weight, but an emulsifier or solubilizer may be used in combination if necessary. In the case of coating with a stock solution without dilution, it may be diluted to 0.1 to 50% by weight and adhered to a low-viscosity hydrocarbon compound. Further, as a method for drying the water permeable agent, a method of drying with hot air or infrared rays, a method of contacting with a heat source and drying, or the like may be used.

The amount of the non-volatile component of the water permeable agent adhered at the time of coating is 0.05 to 5.0% by weight, preferably 0.1 to 2.0% by weight, based on the polyolefin-based non-woven fabric. If the amount of adhesion is less than 0.05% by weight, sufficient water permeability cannot be obtained, and if the amount of adhesion exceeds 5.0% by weight, wrapping increases when the fiber is card-processed, resulting in significant productivity. It is deteriorated or the obtained non-woven fabric becomes sticky and feels poor to the touch, making it unsuitable as a surface material for absorbent articles.

When the water permeable agent of the present invention is kneaded into a resin, a known mixing device may be used. For example, the mixture is mixed with a Henschel mixer, a super mixer, or the like, and melt-mixed with a known short-screw or twin-screw extruder or the like. It is good to make a master batch in advance. At this time, the polyolefin resin may be mixed with stabilizers such as antioxidants and ultraviolet inhibitors and additives such as titanium oxide, metal soap, carbon black, pigments, antibacterial agents and lubricants, if necessary. ..

The amount of the water permeable agent added when kneading is 0.1 to 30% by weight, preferably 1 to 20% by weight, based on the resin. If the amount of kneading is less than 0.1% by weight, sufficient water permeability cannot be obtained, and if it exceeds 30% by weight, the fiber strength is lowered and the productivity is significantly lowered, which is not preferable.

Then, the polyolefin-based resin kneaded with the water-permeable agent is melt-spun using a known melt-spinning machine. The spinning temperature is such that the water permeable agent does not substantially deteriorate, and the resin is extruded at a spinning temperature of 200 to 300 ° C. to prepare a spinning filament having a predetermined fineness. The spun filament is stretched as needed. Stretching is preferably performed at a stretching temperature of 90 to 130 ° C. and a stretching ratio of 2 times or more because the fiber strength is improved. A fiber treatment agent may be attached to the obtained filament.

To produce a non-woven fabric from polyolefin fibers, short fibers (staple fibers) are obtained through melt spinning, stretching, crimping, heat treatment, and cutting, and then a non-woven fabric is obtained by the roller card method, or melted. It is possible to adopt a spunbond method or a melt blow method in which a non-woven fabric is directly produced by spinning, a wet molding method in which a yarn that has undergone a thread forming process is cut short and obtained through a dispersion, webization, and entanglement process. The spunbond method is particularly preferable for obtaining a non-woven fabric having high tensile breaking strength, the melt blow method for obtaining a non-woven fabric having a small basis weight, and the wet molding method for obtaining a non-woven fabric having extremely high homogeneity.

Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

Component (A): Synthesis of polyoxyalkylene monofatty acid ester-Synthesis of component (A1) 284 g (1 mol) of stearic acid and 6.7 g of potassium hydroxide are charged in a 5 L autoclave, and the inside of the autoclave is replaced with nitrogen gas. The temperature is raised to 150 ° C. at a stirring speed of 200 rpm, and 440 g (10 mol) of ethylene oxide is gradually press-fitted and added at the same temperature. After aging at the same temperature for 1 hour and cooling to 120 ° C., 2610 g (45 mol) of propylene oxide is press-fitted and added at the same temperature. After aging at the same temperature for 3 hours and cooling to 60 ° C., 7.2 g of glacial acetic acid was charged and neutralized.

-Ingredients (A2) to (A8)
The components (A2) to (A8) were synthesized by the same synthesis method as the component (A1).

Component (B): Synthesis of polyoxyethylene alkyl ether phosphoric acid ester or its salt / component (B1) 390 g (3 mol) of 2-ethylhexanol and 0.7 g of potassium hydroxide were charged into a 1 L autoclave, and the inside of the autoclave was filled with nitrogen gas. Replace. The temperature is raised to 150 ° C. at a stirring speed of 200 rpm, and 264 g (6 mol) of ethylene oxide is gradually press-fitted and added at the same temperature. The mixture is aged at the same temperature for 1 hour, cooled to 60 ° C., and then neutralized with 0.2 g of 89% phosphoric acid to obtain a reaction product. Next, 654 g (3 mol) of the reaction product is placed in a 1 L flask, 142 g (1 mol) of anhydrous phosphoric acid is gradually added while stirring, and the reaction is carried out for 3 hours while maintaining 60 ° C. Then, 3 g of ion-exchanged water is charged and stirred at 60 ° C. for 30 minutes. Next, 160 g of potassium hydroxide was charged while paying attention to heat generation to obtain a phosphoric acid ester salt.

-Ingredients (B2) to (B6)
The components (B2) to (B6) were synthesized by the same synthesis method as that of the component (B1).

The components (A1) to (A8) and the components (B1) to (B6) are mixed at a ratio (% by weight) shown in Tables 1 and 2 at 50 ° C. until uniform, and then mixed with each water permeable agent. bottom.

For each of the water permeable agents shown in Tables 1 and 2, an aqueous solution is prepared so that the non-volatile content weight ratio becomes 10% by weight in warm water at 40 ° C. Next, after immersing the polypropylene non-woven fabric (grain: 15 gsm) in the aqueous solution of each water permeable agent for 1 minute, a mangle tester was used so that the amount of the non-woven fabric of the water permeable agent adhered to the non-woven fabric was 0.7% by weight. squeeze. Subsequently, the non-woven fabric to which each water permeable agent was attached was dried at 80 ° C. for 30 minutes and then stored in a constant temperature and humidity chamber (20 ° C., 40% RH) for 24 hours to obtain a test cloth.

The amount of the water permeable agent attached to the test cloth (W2) was determined by Soxhlet extraction of the non-woven fabric sample (W1) to which the water permeable agent was attached using methanol. Then, the water permeable agent adhesion rate X (%) was calculated by the following formula.
X (%) = 100 x W2 / W1

For artificial urine used in the liquid flow test, initial water permeability test, durable water permeability test and liquid return test, urea: NaCl: dsm ₄ : CaCl ₂ : water = 1.9: 0.78: 0.078: 0.029: It was prepared with a formulation of 97.2%.

[Test method]
(1) Liquid flow test Three layers of filter paper (ADVANTEC No. 2, 15 x 30 cm) are attached to an acrylic board with an inclination of 45 °. Next, a test cloth (15 x 30 cm) is attached on the filter paper. Subsequently, a line is drawn at the dropping position of the artificial urine, and 1 cc of the artificial urine is dropped from 1 cm above the test cloth using a pipette. After dripping, the vertical distance (mm) through which artificial urine flows is measured. The measured value shall be the average value of 5 measurements. The shorter the flow distance, the better the instantaneous water permeability.

(2) Initial Permeability Test, Durable Permeability Test Using the liquid permeability measuring device "LISTER AC" manufactured by LENZING TECHNIK, the NONWOVENS COVERSTOCK LIQUID STRIKE-THROUGH test of EDANA RECOMMENDED TEST METHOD was performed. A test cloth (10 cm square) is placed on a filter paper (GRADE: 989 10 cm square x 3 sheets stacked) sold by INTEC Co., Ltd. Put. Next, 5 mL of artificial urine is dropped from a height of 25 mm from the surface of the test cloth at a rate of 25 mL / 3.5 seconds. The time from dripping to the passage of artificial urine through the surface of the test cloth was measured with a fluidity measuring device and used as the water permeability time. Further, this was repeated 3 times to obtain a durable hydraulic conductivity test. The shorter the water permeability, the better the water permeability. Further, the shorter the second and third water permeation times are the same as the first water permeation time, the better the durable water permeation.

(3) Liquid return test Five sheets of filter paper (ADVANTEC No. 5A, 10 cm square) are stacked, and a test cloth (10 cm square) is placed on the filter paper. Next, after fixing a cylinder with an inner diameter of 12 mm on the test cloth, 10 mL of artificial urine is injected from the upper part of the cylinder and absorbed by the filter paper through the test cloth. When the artificial urine is absorbed by the filter paper, the cylinder is removed, and two pre-weighed filter papers (ADVANTEC No. 5A, 10 cm square) are placed on the test cloth in layers. Subsequently, a load of 3.5 kg is applied from the top of the filter paper for 5 minutes. After 5 minutes, weigh the filter paper and calculate the weight increase to obtain the liquid return amount (g). The measured value shall be the average value of 5 measurements. The smaller the amount of liquid returned, the better the anti-wetting property.

Component (A1): Polyoxyethylene (10 mol) Polyoxypropylene (45 mol) Monostearic acid ester component (A2): Polyoxyethylene (3 mol) Polyoxybutylene (24 mol) Monooleic acid ester component (A3) : Polyoxypropylene (36 mol) Polyoxyethylene (4 mol) Monostearic acid ester component (A4): Polyoxyethylene (8 mol) Polyoxypropylene (40 mol) Monobehenic acid ester component (A5): Polyoxypropylene (A5) 42 mol) Polyoxyethylene (6 mol) monoisostearic acid ester component (A6): polyoxypropylene (50 mol) polyoxyethylene (5 mol) monolauric acid ester
Component (B1): Polyoxyethylene (2 mol) 2-Ethylhexyl ether phosphoric acid ester Potassium salt component (B2): Polyoxyethylene (3 mol) Octyl ether phosphoric acid ester component (B3): Polyoxyethylene (1 mol) 2- Ethylhexyl ether phosphoric acid ester sodium salt component (B4): polyoxyethylene (5 mol) decyl ether phosphoric acid ester potassium salt

Component (A7): Polyoxyethylene (10 mol) Monostearic ester component (A8): Polyoxyethylene (15 mol) Polyoxypropylene (8 mol) Monostearic ester component (A9) Polyoxyethylene (30 mol) Himasi oil component (A10) polyoxyethylene (40 mol) pentaerythritol tetrastearic acid ester component (A11) polyoxyethylene (10 mol) hexadecyl alcohol component (B5): polyoxyethylene (3 mol) sodium lauryl ether phosphate Salt component (B6): Stearyl alcohol phosphate potassium salt component (B7): Sodium dodecylbenzene sulfonate

By applying the water-permeable agent of the present invention to the fiber, excellent performance can be exhibited in all of the initial water permeability, durable water permeability, and anti-wetting property of the fiber. Therefore, the water permeable agent of the present invention can be suitably used as a water permeable agent for polyolefin-based non-woven fabrics used for disposable diapers, sanitary products, and the like.

Claims (4)

A water permeable agent containing the component (A) represented by the following general formula (1) and the component (B) represented by the following general formula (2) as essential components , wherein the component (A) is contained. A water permeable agent having a weight ratio <(A) / (B)> of the component (B) to 90/10 to 40/60 .

(In the formula, R ₁ represents an alkyl group or an alkenyl group having 7 to 21 carbon atoms, A ₁ O represents an oxyethylene group having 2 carbon atoms, A ₂ O represents an oxyalkylene group having 3 to 4 carbon atoms, and x is 1. An integer of ~ 20 and y are integers of 10 to 60. The _{order of addition of oxyalkylene groups for A 1} O and A ₂ O is not limited, and the addition method at the time of addition is block addition or random addition. It may be either.)

(In the formula, R ₂ is an alkyl group having 6 to 10 carbon atoms, A ₃ O is an oxyethylene group having 2 carbon atoms, z is an integer of 1 to 10, a is 1 or 2, M is a hydrogen atom, and an alkali metal atom. , Represents an alkaline earth metal atom, ammonium or organic ammonium.) The water permeable agent according to claim 1, wherein the total weight ratio of the component (A) and the component (B) to the total non-volatile content of the water permeable agent is 70 to 100% by weight. The water permeable agent according to claim 1 or 2 , which is used for thermoplastic synthetic fibers. The water permeable agent according to claim 1 or 2 , which is used for a non-woven fabric.