JP6322040B2 - Permeability imparting agent - Google Patents

Permeability imparting agent Download PDF

Info

Publication number
JP6322040B2
JP6322040B2 JP2014090852A JP2014090852A JP6322040B2 JP 6322040 B2 JP6322040 B2 JP 6322040B2 JP 2014090852 A JP2014090852 A JP 2014090852A JP 2014090852 A JP2014090852 A JP 2014090852A JP 6322040 B2 JP6322040 B2 JP 6322040B2
Authority
JP
Japan
Prior art keywords
water
imparting agent
oil
weight
permeability imparting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2014090852A
Other languages
Japanese (ja)
Other versions
JP2014231666A (en
Inventor
正剛 関藤
正剛 関藤
義幸 若原
義幸 若原
Original Assignee
三洋化成工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2013095603 priority Critical
Priority to JP2013095603 priority
Application filed by 三洋化成工業株式会社 filed Critical 三洋化成工業株式会社
Priority to JP2014090852A priority patent/JP6322040B2/en
Publication of JP2014231666A publication Critical patent/JP2014231666A/en
Application granted granted Critical
Publication of JP6322040B2 publication Critical patent/JP6322040B2/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Description

  The present invention relates to a water-permeability imparting agent suitable for hydrophobic fibers used for top sheets of absorbent articles such as paper diapers and sanitary products. More specifically, the absorption characteristics and repeated water permeability of aqueous liquids such as urine and body fluids are improved through the top sheet, and once absorbed, urine and body fluids flow back from the top sheet and adhere to the wearer. Further, the present invention relates to a water permeability imparting agent with improved liquid return properties.

  In general, absorbent articles such as disposable diapers and sanitary products have a structure in which an absorbent body made of cotton-like pulp, a superabsorbent polymer substance, or the like is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. It has become. Urine and body fluid are absorbed by the absorber through the top sheet. At this time, in order to avoid discomfort, it is necessary that the time until urine and body fluid are completely absorbed is extremely short, and that urine and body fluid return from the absorber to the surface is small. Furthermore, it is not preferable that the treatment agent on the top sheet flows out due to the absorption of urine or body fluid only once or twice and the water permeability decreases rapidly, because the number of replacements of paper diapers and sanitary products increases. There is a demand for durable water-permeable materials.

  For example, Patent Document 1 proposes a method in which an alkyl phosphate ester salt and a polyether-modified silicone are used in combination, and Patent Document 2 discloses a mixture of starch and / or a cellulose derivative and a water-soluble ethylenically unsaturated monomer. A method of use is disclosed.

  The demand for improving the performance of absorbents that repeatedly absorb bodily fluids, such as disposable diapers and sanitary products, has increased, and there has been a desire to increase the number of absorptions. Property, repeated water permeability, and liquid return prevention property are not sufficient.

JP-A-4-82961 JP 2002-88651 A

However, in recent years, there has been a strong demand for improving the performance of absorbent bodies that repeatedly absorb bodily fluids, such as disposable diapers and sanitary products, and there has been a desire to increase the number of absorptions. A top sheet made of fibers has insufficient water permeability, repeated water permeability, and liquid return prevention.
The present invention allows the aqueous liquid to be smoothly absorbed even when it is repeatedly permeated through the body fluid or the like, and the decrease in the absorption is small. Once absorbed, the urine or body fluid that has been absorbed once flows back from the top sheet and adheres to the wearer. An object of the present invention is to provide a water-permeable imparting agent for hydrophobic fibers, which can obtain a top sheet of a water-absorbing article that does not occur.

As a result of intensive studies to solve the above problems, the present inventors have reached the invention as shown below. That is, the present invention is a water-permeability imparting agent containing an ester compound (A) and an alkyl phosphate salt (B) represented by the general formula (1), and is coconut oil, palm oil, peanut oil, olive oil, castor oil, It is a transesterification product of one or more animal and vegetable oils (A1) selected from the group consisting of rapeseed oil, cocoon oil, sunflower oil, beef tallow and whale oil, and glycerin, and the degree of esterification of (A) is 33% to 67%. Ri permeability imparting agent der is, the alkyl phosphate salt (B) is you containing polyoxyalkylene group-containing alkyl phosphate salt.
[Wherein R1 is an alkyl group having 6 to 24 carbon atoms, AO is an alkyleneoxy group having 2 to 4 carbon atoms, m is an integer of 0 to 15, and r is an integer of 1 or 2. , M is hydrogen or an alkali metal. ]

  The nonwoven fabric using the water-permeable fiber to which the ester compound (A) contained in the water-permeability imparting agent of the present invention is attached is excellent in initial water permeability, and at the same time, the conventional water-repellent agent is used repeatedly. Compared to the case, it improves dramatically. For this reason, it is particularly suitable as a surface material for sanitary materials such as paper diapers and sanitary napkins.

  The water-permeability imparting agent of the present invention is one or more animal and plant oils selected from coconut oil, palm oil, peanut oil, olive oil, castor oil, rapeseed oil, coconut oil, sunflower oil, beef tallow and whale oil from the viewpoint of repeatedly improving water permeability ( It consists of a transesterification product of A1) and glycerin, and contains an ester compound (A) having a degree of esterification of 33% to 67%.

  Specific examples of the animal and vegetable oils (A1) include natural oils and fats selected from coconut oil, palm oil, peanut oil, olive oil, castor oil, rapeseed oil, cocoon oil, sunflower oil, beef tallow and whale oil. Among these, rapeseed oil and palm oil are preferred from the viewpoint of achieving both water permeability to water and prevention of liquid return.

Transesterification product of one or more animal and plant oils (A1) selected from the group consisting of coconut oil, palm oil, peanut oil, olive oil, castor oil, rapeseed oil, cocoon oil, sunflower oil, beef tallow and whale oil and glycerin The fatty acid partial ester compound (A) can be produced by a known method, for example, by a transesterification reaction using the above (A1) and glycerin as a basic catalyst such as potassium carbonate or sodium carbonate.
The esterification degree of the ester compound (A) in the present invention is 33% to 67%, and preferably 45% to 55% from the viewpoint of achieving both initial water permeability and repeated water permeability.
If the degree of esterification is less than 33%, the hydrophilicity becomes strong, and the water permeability and liquid return properties are lowered repeatedly.
The degree of esterification in the present invention is calculated from the following mathematical formula (1) based on the integrated area of mono-, di-, and tri-ester bodies determined from a gel permeation chromatograph (GPC) method.

The conditions for GPC are as follows.
Apparatus: HLC-8220GPC [manufactured by Tosoh Corporation]
GPC column guard column: TSK guard column Super HL (4.6 mm ID × 15 cm)
Separation column: TSKgel SuperH2000 (6 mm ID × 15 cm) + TSKgel SuperH3000 (6 mmID × 15 cm) + TSKgel SuperH4000 (6 mm ID × 15 cm)
Detector: RI detector Fluid medium: Tetrahydrofuran Flow rate: 0.6 ml / min
Column temperature: 40 ° C
Sample concentration: 0.25% by weight
Sample injection volume: 10 μl

  The content of the ester compound (A) in the water permeability-imparting agent of the present invention is preferably 15 to 75% by weight, more preferably 25 to 65% by weight, based on the weight of the water-permeability imparting agent, from the viewpoint of repeated water permeability. %, Particularly preferably 35 to 60% by weight.

  The water permeability imparting agent of the present invention preferably further contains an alkyl phosphate salt (B) represented by the general formula (1) from the viewpoint of initial water permeability and repeated water permeability.

  In the formula, R1 is an alkyl group having 6 to 24 carbon atoms, AO is an alkyleneoxy group having 2 to 4 carbon atoms, m is an integer of 0 to 15, r is an integer of 1 or 2, M is hydrogen or an alkali metal.

  R1 in the general formula (1) is preferably an alkyl group having 6 to 24 carbon atoms, more preferably 8 to 20 carbon atoms, and particularly preferably 8 to 18 carbon atoms. The carbon number of the alkyl group may be distributed or a mixture of two or more types of alkyl phosphate salts.

Moreover, AO in General formula (1) is a C2-C4 alkyleneoxy group, and an ethyleneoxy group, a propyleneoxy group, and a butyleneoxy group are mentioned specifically ,. Among these, an ethyleneoxy group is preferable.
M represents hydrogen or an alkali metal (sodium, potassium, lithium, etc.). And m means the added mole number of alkylene oxide, Preferably m is an integer of 0-15, More preferably, m is 0-8, Most preferably, m is 0-5. r represents the number of M that the alkyl phosphate salt (B) has, and is an integer of 1 or 2.

  As alkyl phosphate salt (B), it is obtained as a mixture of alkyl phosphate salts in which r is 1 or 2, specifically, phosphate ester potassium salt of octyl alcohol, phosphate ester potassium salt of 2-ethylhexyl alcohol, Phosphate sodium salt of decyl alcohol, Phosphate ester potassium salt of isodecyl alcohol, Phosphate ester potassium salt of dodecyl alcohol, Phosphate ester sodium salt of tridecyl alcohol, Phosphate ester sodium salt of isotridecyl alcohol, Tetra Phosphoric acid ester potassium salt of decyl alcohol, hexadecyl alcohol phosphoric acid ester sodium salt, octadecyl alcohol phosphoric acid ester potassium salt, isooctadecyl alcohol phosphoric acid ester potassium salt, Ethyl oxide of til alcohol (hereinafter abbreviated as EO) 2 mol adduct phosphate potassium salt, ethylene oxide of octyl alcohol (hereinafter abbreviated as PO) 2 mol adduct phosphate potassium salt, EO 3 of dodecyl alcohol Phosphoric ester potassium salt of molar adduct, phosphoric ester potassium salt of EO5 molar adduct of tridecyl alcohol, phosphoric ester potassium salt of EO3 molar adduct of isotridecyl alcohol, phosphorous of EO5 molar adduct of octadecyl alcohol From the viewpoint of initial water permeability, the phosphate ester potassium salt of octyl alcohol, the phosphate ester sodium of decyl alcohol, and the like are preferable. Salt, phosphoric acid ester potassium salt of isodecyl alcohol, EO2 mol adduct of octyl alcohol, phosphoric acid ester potassium salt, phosphate sodium salt of EO3 mol adduct of dodecyl alcohol. From the viewpoint of repeated water permeability, octadecyl A phosphate ester potassium salt of an EO 5 mol adduct of alcohol and a phosphate ester potassium salt of an EO 5 mol adduct of isooctadecyl alcohol are preferred.

  In the water permeability imparting agent of the present invention, the content of the alkyl phosphate salt (B) having an alkyl group having 6 to 24 carbon atoms is preferably 10 to 10 based on the weight of the water permeability imparting agent from the viewpoint of initial water permeability. It is 50% by weight, more preferably 20 to 40% by weight, and particularly preferably 25 to 35% by weight.

The water permeability imparting agent of the present invention may contain a nonionic surfactant (C).
Examples of the nonionic surfactant (C) added to the water permeability imparting agent of the present invention include monovalent alcohol-type nonionic surfactants from the viewpoint of improving the initial water permeability. For example, polyoxyalkylene alkyl ethers (C1) and the like. Moreover, the polyhydric alcohol type nonionic surfactant etc. may be included from a viewpoint of an emulsifying property and a liquid-flow rate improvement. For example, an ester (C2) of a polyhydric alcohol, a polyoxyalkylene adduct, and a fatty acid. Furthermore, a polyoxyalkylene adduct may be included from the viewpoint of improving emulsifying properties and liquid return preventing properties. For example, polyoxyethylene diester (C3).
(C) may be used alone or in combination of two or more.

  In the water permeability-imparting agent of the present invention, the monohydric alcohol alkylene oxide adduct is a product obtained by adding an alkylene oxide to a monohydric alcohol. For example, the alkyl group of the monohydric alcohol has 1 to 18 carbon atoms, preferably 4 to 16 carbon atoms, more preferably 6 to 14 carbon atoms, and particularly preferably 8 to 12 carbon atoms. When the number of carbon atoms in the alkyl group exceeds 18, the initial water permeability decreases. The carbon number of the alkyl group may be distributed, or a mixture of two or more monohydric alcohol alkylene oxide adducts may be used. Examples of the alkylene oxide include those obtained by block polymerization or random polymerization of EO and PO. Of these, EO is preferred. The number of added moles of alkylene oxide is preferably an integer of 1 to 20, more preferably 2 to 15, and particularly preferably 3 to 10.

  In the nonionic surfactant added to the water-permeability imparting agent of the present invention, examples of the ester (C2) of a polyhydric alcohol, a polyoxyalkylene adduct and a fatty acid include, for example, an alkylene oxide of an ester of a polyhydric alcohol and a fatty acid. An adduct (C2-1), an ester of an alkylene oxide adduct of a polyhydric alcohol and a fatty acid (C2-2), and an ester of a polyoxyalkylene adduct and a fatty acid (C2-3).

Specific examples of the polyhydric alcohol constituting (C2-1) include aliphatic polyhydric (3-6 valent) alcohols having 3 to 6 carbon atoms (such as glycerin, trimethylolpropane, pentaerythritol, sorbitol and sorbitan). Can be mentioned.
Specific examples of fatty acids constituting (C2-1) include aliphatic carboxylic acids having 8 to 24 carbon atoms [aliphatic saturated carboxylic acids (caprylic acid, 2-ethylhexanoic acid, pelargonic acid, capric acid, lauric acid, tridecane Acid, isotridecanoic acid, myristic acid, palmitic acid, stearic acid, and isostearic acid), aliphatic unsaturated carboxylic acids (oleic acid, linoleic acid, linolenic acid, ricinoleic acid, castor oil fatty acid, hardened castor oil fatty acid, etc.)] .
As specific examples of the polyoxyalkylene adduct constituting (C2-1), an oxyalkylene group having 2 to 12 carbon atoms (hereinafter abbreviated as AO) (ethylene oxide (hereinafter abbreviated as EO)), propylene oxide (hereinafter abbreviated as “AO”). Abbreviated PO) and butylene oxide). AO may be used alone or in combination of two or more. In addition, when using 2 or more types of AO together, block addition or random addition may be sufficient.
As specific examples of (C2-1), EO 15 mol adduct of glyceryl beef tallow fatty acid ester, EO 20 mol adduct of trimethylolpropane trioleate, EO 30 mol adduct of tetraoleate of pentaerythritol, and sorbitan tetraoleic acid EO 20 mol adduct of ester, EO 10 mol adduct of hydrogenated castor oil, EO 25 mol adduct of hydrogenated castor oil and EO 43 mol adduct of castor oil, EO 25 mol adduct of ester of glycerin and castor oil fatty acid, hydrogenated castor oil EO20 Mole adduct oleic acid castor oil EO 25 mol adduct beef tallow fatty acid ester, hydrogenated castor oil ethylene oxide 25 mol adduct polyester of maleic acid and stearic acid (number average molecular weight; 6000) and hydrogenated castor oil ethyl Polyesters of oxide 25 mol adduct and sebacic acid and stearic acid (number average molecular weight; 7000) and the like.
Among these, from the viewpoint of emulsifying properties, an EO 20 mol adduct of trimethylolpropane trioleate, a 25 mol adduct of hydrogenated castor oil, a polyester of maleic acid and stearic acid (number average molecular weight; 6000) is preferable. . From the viewpoints of emulsification and repeated water permeability improvement, an EO43 mol adduct of castor oil is preferred.

Specific examples of the polyhydric alcohol constituting (C2-2) include C3-C6 aliphatic polyhydric (3-6 valent) alcohols (such as glycerin, trimethylolpropane, pentaerythritol, sorbitol, and sorbitan). Can be mentioned.
Specific examples of the polyoxyalkylene adduct constituting (C2-2) include C2-C12 AO groups (EO, PO, butylene oxide, etc.). AO may be used alone or in combination of two or more. In addition, when using 2 or more types of AO together, block addition or random addition may be sufficient.
Specific examples of fatty acids constituting (C2-2) include aliphatic carboxylic acids having 8 to 24 carbon atoms [aliphatic saturated carboxylic acids (caprylic acid, 2-ethylhexanoic acid, pelargonic acid, capric acid, lauric acid, tridecane Acid, isotridecanoic acid, myristic acid, palmitic acid, stearic acid, and isostearic acid) and aliphatic unsaturated carboxylic acids (oleic acid, linoleic acid, linolenic acid, ricinoleic acid, castor oil fatty acid, hardened castor oil fatty acid, and the like).
Specific examples of (C2-2) include stearic acid ester of castor oil EO 43 mol adduct, oleic acid ester castor oil EO 25 mol adduct beef tallow fatty acid ester of castor oil EO 25 mol adduct, ethylene oxide 25 of hydrogenated castor oil Examples thereof include a polyester of a mole adduct, maleic acid and stearic acid (number average molecular weight; 6000), a 25 mol adduct of hydrogenated castor oil, a polyester of sebacic acid and stearic acid (number average molecular weight; 7000), and the like. .
Among these, from the viewpoint of improving liquid permeability and repeated water permeability, a 25-mol adduct of hydrogenated castor oil, a polyester of maleic acid and stearic acid (number average molecular weight; 6000) is preferable.

Specific examples of the polyoxyalkylene adduct constituting (C2-3) include oxyalkylene groups having 2 to 12 carbon atoms (hereinafter abbreviated as AO), such as ethylene oxide (hereinafter abbreviated as EO), propylene oxide ( Hereinafter, abbreviated as PO) and butylene oxide. AO may be used alone or in combination of two or more. In addition, when using 2 or more types of AO together, block addition or random addition may be sufficient.
Specific examples of fatty acids constituting (C2-3) include aliphatic carboxylic acids having 8 to 24 carbon atoms [aliphatic saturated carboxylic acids (caprylic acid, 2-ethylhexanoic acid, pelargonic acid, capric acid, lauric acid, tridecane Acid, isotridecanoic acid, myristic acid, palmitic acid, stearic acid, and isostearic acid), aliphatic unsaturated carboxylic acids (oleic acid, linoleic acid, linolenic acid, etc.), animal and vegetable oils [(coconut oil, palm oil, castor oil, Hardened castor oil, beef tallow, hardened beef tallow, pork tallow and the like)] fatty acids.
Of these, polyoxyethylene (number average molecular weight; 400) diolate is preferred from the viewpoint of improving emulsifying properties and preventing liquid return.

  When two or more types of (C2) are used in combination, it is preferably two or more types consisting of the group consisting of (C2-1), and more preferable one is a 25 mol adduct trioleate of cured castor oil and a cured product. This is a combined use of 25 mol adduct of castor oil and a polyester (number average molecular weight; 6000) of maleic acid and stearic acid.

  The content of the nonionic surfactant (C) is preferably 20 to 70% by weight, more preferably 30%, based on the weight of the water permeability imparting agent from the viewpoint of improving the initial water permeability and emulsification properties and liquid return prevention properties. -60% by weight, particularly preferably 40-50% by weight.

The water-permeability imparting agent of the present invention may contain an additive (D) as necessary.
Examples of the additive (D) include lubricants such as waxes, antioxidants, ultraviolet absorbers, antifoaming agents, preservatives, and fragrances.
The content of (D) in the water permeability-imparting agent of the present invention is preferably 5% by weight or less, more preferably 0.1-1% by weight, based on the weight of the water-permeability imparting agent.

  The weight ratio [(A) / (B) / (C)] of the ester compound (A), the alkyl phosphate salt (B), and the nonionic surfactant (C) is determined from the viewpoints of repeated water permeability and improved liquid flow rate. When the total weight of (A) and (B) and (C) is 100, it is preferably 10-70 / 10-50 / 20-70, more preferably 30-50 / 20-40 / 20-30. is there.

  The water-permeability imparting agent of the present invention comprises (A), if necessary, water, (B), and (C) components, and is uniformly mixed by heating (for example, 30 to 70 ° C.) at room temperature or as necessary. Is obtained. The blending order and blending method of each component are not particularly limited.

The water permeability imparting agent of the present invention is usually imparted to hydrophobic fibers as an aqueous emulsion.
The water-based emulsion is preferably prepared by adding water at 20 to 40 ° C. to the water permeability imparting agent and diluting or emulsifying the water permeability imparting agent in water at 20 to 40 ° C.

  The concentration of the aqueous emulsion can be selected arbitrarily, but is preferably 0.05 to 20% by weight, more preferably 0.1 to 10% by weight.

The water permeability imparting agent of the present invention may be used for fiber applications.
The fibers are preferably non-woven products, particularly non-woven products used for top sheets such as paper diapers and synthetic napkins.

There is no particular limitation on the method for attaching the water permeability imparting agent to the hydrophobic fiber, and a commonly used method such as an oiling roll method, a dipping method, or a spray method can be used in any step such as spinning and drawing. .
The adhesion amount of the water-permeability imparting agent is preferably 0.05 to 5% by weight, and more preferably 0.1 to 2% by weight as a solid content based on the fiber weight.
By attaching the water-permeability imparting agent of the present invention, durable water permeability can be imparted to the hydrophobic fiber to obtain the water-permeable fiber of the present invention.

The hydrophobic fiber used for the material of the water permeable fiber of the present invention means a fiber having a water absorption of 1% by weight or less at a temperature of 25 ° C. and a relative humidity of 65%.
It does not specifically limit as a hydrophobic fiber, The hydrophobic synthetic fiber used normally can be used, Polyolefin, polyester, polyamide, etc. are mentioned.
Examples of the polyolefin include polyethylene, polypropylene, ethylene vinyl acetate copolymer, ethylene / propylene copolymer, and ethylene / propylene / 1-butene copolymer.
Examples of the polyester include polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyethylene terephthalate / isophthalate, and polyether polyester.
Examples of the polyamide include 6,6-nylon and 6-nylon.
Among these, polyolefin and polyester are preferably used as a water-absorbing material for diapers.

  The fiber form using the water-permeable fiber to which the water-permeability imparting agent of the present invention is applied is preferably in the form of a cloth, and examples thereof include woven fabrics, knitted fabrics, and nonwoven fabrics. Moreover, you may use the fiber mixed by methods, such as blended cotton, blended yarn, blended fiber, knit, and knit, as a cloth form. Among these, a nonwoven fabric is particularly preferable.

  When applied to a nonwoven fabric, the short fiber treated with the water-permeability imparting agent of the present invention is made into a fiber laminate by a dry or wet method, and then crimped by a heating roll, fused by air heating, The fibers may be entangled to form a nonwoven fabric, or the water permeability imparting agent of the present invention may be adhered to a nonwoven fabric obtained by a spunbond method, a melt blown method, a flash spinning method or the like.

The water-permeable fiber of the present invention and the non-woven fabric using the same are suitably used as a surface material for water-absorbent articles, in particular, a surface material for sanitary materials such as paper diapers and sanitary napkins.
Moreover, it can also utilize for a second sheet | seat, a water absorption body, an industrial or medical wiper, an absorption pad, a water-permeable sheet | seat, etc.

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely, this invention is not limited only to these Examples. Examples 1 and 7 are reference examples.

Production Example 1 <Production of Fatty Acid Partial Ester Compound (A-1)>
A reaction vessel equipped with a stirrer and a thermometer is charged with 100 parts by weight of rapeseed oil and 10 parts by weight of glycerin, and 1 part by weight of potassium carbonate is added as a catalyst, followed by nitrogen substitution. The mixture was heated to 200 ° C. and reacted for 1 hour to obtain a fatty acid partial ester compound (A-1) (esterification degree: 50%).
Production Example 2 <Production of fatty acid partial ester compound (A-2)>
A reaction vessel equipped with a stirrer and a thermometer is charged with 75 parts by weight of beef tallow and 10 parts by weight of glycerin, and 1 part by weight of potassium carbonate is added as a catalyst, and the atmosphere is replaced with nitrogen. The mixture was heated to 200 ° C. and reacted for 1 hour to obtain a fatty acid partial ester compound (A-2) (degree of esterification: 40%).

<Examples 1-11 and Comparative Examples 1-8>
The components in parts by weight listed in Table 1 were stirred at 40 ° C. for 30 minutes to prepare water permeability imparting agents (Examples 1 to 11 and Comparative Examples 1 to 8).

  The obtained water permeation imparting agents of Examples 1 to 11 and Comparative Examples 1 to 8 were each diluted with warm water at 25 ° C. so that the non-volatile component would be 0.5% by weight to obtain a water permeation imparting agent diluted solution. . A polypropylene spunbond nonwoven fabric having a basis weight of 20 g / m 2 was lubricated with 0.5% of a water permeability imparting agent diluent. Oiling is performed by immersing in a diluting solution of water permeability imparting agent in an oil bath, then squeezing with a mangle (squeezing rate 100%), then drying with a circulating drier at 80 ° C. for 30 minutes, and leaving at room temperature for 8 hours or more To obtain a water-permeable nonwoven fabric. About the obtained nonwoven fabric, the performance (attachment rate of the water permeability imparting agent that adheres to the water-permeable nonwoven fabric, initial water permeability to the nonwoven fabric, repeated water permeability, liquid permeability, and liquid return prevention property) is evaluated by the following evaluation methods. The results are shown in Table 1.

Abbreviations in Table 1 are as follows.
(A-1): Partial ester compound of fatty acid of rapeseed oil and glycerin (degree of esterification: 50%)
(A-2): Fatty acid partial ester compound of beef tallow and glycerin (degree of esterification: 40%)
(A'-1): Rapeseed oil (A'-2): Glycerin (A'-3): Dioleic acid glyceride (A'-4): Partial ester compound of fatty acid of rapeseed oil and glycerin (degree of esterification: 20% )
(A'-5): Partial ester compound of fatty acid of rapeseed oil and glycerin (degree of esterification: 30%)
(A'-6): Hydrolyzate of rapeseed oil (degree of esterification: 50%)
(B-1): Phosphate ester potassium salt of octyl alcohol EO 2 mol adduct (B-2): Phosphate ester potassium salt of isodecyl alcohol (B-3): Phosphate ester potassium of isooctadecyl EO 5 mol adduct Salt (B-4): Phosphate ester potassium salt of dodecyl alcohol EO 3 mol adduct (B′-1): Phosphate ester potassium salt of butyl alcohol (C-1): Ethylene oxide 5 mol adduct of isodecanol (C -2): Octadecyl alcohol ethylene oxide 5 mol adduct
(C-3): ethylene oxide 20 mol adduct trioleate of hydrogenated castor oil (C-4): ethylene oxide 25 mol adduct of hydrogenated castor oil and maleic acid
Polyester with stearic acid (number average molecular weight; 6000)
(C-5): 43 mol of ethylene oxide adduct of hydrogenated castor oil (C-6): polyoxyethylene (number average molecular weight; 400) diolate

〔Evaluation method〕
(1) Adhesion rate of water-permeability imparting agent adhering to water-permeable nonwoven fabric Adhesion rate of water-permeability imparting agent adhering to water-permeable non-woven fabric is measured immediately after moisture conditioning at a temperature and humidity of 25 ° C. × 40% RH for 24 hours. The non-woven fabric is extracted with methanol / n-hexane using a rapid residual oil extractor R-11 (manufactured by Tokai Keiki Co., Ltd.), and the extract is placed in an aluminum cup, and an explosion-proof type of about 100 ° C. An aluminum cup was placed on the hot plate, the solvent was completely distilled off, and the weight of the water permeability imparting agent was determined. And permeation | transmission provision agent adhesion rate C% was calculated | required from the following formula. The higher the adhesion rate of the water permeability imparting agent to the water permeable nonwoven fabric, the better the adhesion to the water permeable nonwoven fabric.
C (%) = W2 / W1 × 100
W1: Water-permeable nonwoven fabric immediately after conditioning (g)
W2: Weight of water permeability imparting agent in the extract (g)

(2) Initial water permeability of nonwoven fabric A nonwoven fabric is piled on a filter paper (Toyo filter paper, No. 5), and 1 drop (about 0.05 ml) of physiological saline is added from a burette placed at a height of 10 mm from the nonwoven fabric surface. It is dripped and the time until water droplets disappear from the nonwoven fabric surface is measured. Of the 20 points with a marking pen on the surface of the nonwoven fabric, measurement is performed at these 20 locations, and the number of disappearing physiological saline is displayed in less than 5 seconds. If this number is 18 or more, the initial water permeability is excellent.

(3) Repeated water permeability of nonwoven fabric By the initial water permeability test method of nonwoven fabric, the disappearance time of physiological saline was measured at 20 locations out of 20 points with a marking pen on the nonwoven fabric surface, and the number of disappearance times less than 5 seconds was determined. indicate. The same operation is repeated for the nonwoven fabric subjected to the test. In this repeated test, even if the number of times is repeated, the higher the number of physiological saline disappeared (the number of locations where the disappearance time is less than 5 seconds), the better the repeated water permeability.

(4) Liquid permeability
First measurement: A test nonwoven fabric (10 cm × 10 cm) is placed on a filter paper (manufactured by ADVANTEC, No. 424 (10 cm × 10 cm)), and 5 ml of physiological saline (NaCl solution) is passed through it, and the passage time is measured. To do. The shorter the liquid passage time, the faster the liquid passage speed and the better the liquid permeability.
Second and subsequent measurements: The above method is performed twice at 1 minute intervals, and the liquid passing time is measured. The shorter the liquid passage time, the faster the liquid passage speed and the better the liquid permeability.

(5) Liquid return prevention property A non-woven fabric (10 cm × 10 cm) is placed on a commercially available paper diaper, and a cylinder with an inner diameter of 60 mm is placed on the diaper, and 100 ml of physiological saline is injected into the cylinder and absorbed into the paper diaper through the non-woven fabric. . When all the physiological saline is absorbed in the paper diaper, the cylinder is removed, and 20 pre-weighed filter papers (Toyo filter paper, No. 5) are stacked, and a 5 kg weight is placed thereon. After standing for 5 minutes, the filter paper is weighed and the weight increase is measured to obtain the liquid return amount (g). When the liquid return amount is 1.2 g or less and the liquid return amount (g) is 1.0 g or less, the liquid return prevention property is excellent.

As is clear from the results in Table 1, the water permeability imparting agents of Examples 1 to 11 of the present invention are excellent in initial water permeability and repeated water permeability to the nonwoven fabric, and also have good anti-return properties.
On the other hand, the water permeability imparting agent of Comparative Examples 1 to 2 and 4 having no partial ester compounds of fatty acids of animal and vegetable oils and glycerin and the water permeability imparting agent of Comparative Example 3 using both animal and vegetable oils and glycerin are emulsified. Inferiority, adhesiveness to the nonwoven fabric is lowered, and initial water permeability and repeated water permeability to the nonwoven fabric are both lowered. Moreover, although it is a partial ester compound of the fatty acid of animal and vegetable oils and glycerin, the comparative example which is a water-permeability | providing agent of Comparative Examples 5-6 and 8 and the hydrolyzate of animal and vegetable oils from which the degree of esterification remove | deviated from the scope of this application. The water permeability imparting agent of 7 is inferior in repeated water permeability to the nonwoven fabric.

The water-permeable fiber of the present invention and the non-woven fabric using the same are suitably used as a surface material for water-absorbent articles, in particular, a surface material for sanitary materials such as paper diapers and sanitary napkins.
Moreover, it can also utilize for a second sheet | seat, a water absorption body, an industrial or medical wiper, an absorption pad, a water-permeable sheet | seat, etc.

Claims (9)

  1. Water permeability imparting agent containing ester compound (A) and alkyl phosphate salt (B) represented by general formula (1) , wherein (A) is coconut oil, palm oil, peanut oil, olive oil, castor oil, It is a transesterification product of one or more animal and vegetable oils (A1) selected from the group consisting of rapeseed oil, cocoon oil, sunflower oil, beef tallow and whale oil, and glycerin, and the degree of esterification of (A) is 33% to 67%. der is, water permeability imparting agent the alkyl phosphate salt (B) is you containing polyoxyalkylene group-containing alkyl phosphate salt.
    [Wherein R1 is an alkyl group having 6 to 24 carbon atoms, AO is an alkyleneoxy group having 2 to 4 carbon atoms, m is an integer of 0 to 15, and r is an integer of 1 or 2. , M is hydrogen or an alkali metal. ]
  2.   The water permeability imparting agent according to claim 1, wherein the content of the ester compound (A) is 10 to 70% by weight based on the weight of the water permeability imparting agent.
  3. The water-permeability imparting agent according to claim 1 or 2 , comprising a nonionic surfactant (C).
  4. The water permeability imparting agent according to claim 3 , wherein the nonionic surfactant (C) is a monohydric alcohol type nonionic surfactant and / or a polyhydric alcohol type nonionic surfactant.
  5. The content of the ester compound (A) is 10 to 70% by weight, the content of the alkyl phosphate salt (B) is 10 to 50% by weight, based on the weight of the water-permeability imparting agent, and the nonionic surfactant (C) The water permeability imparting agent according to claim 3 or 4 , wherein the content of the water is 20 to 70% by weight.
  6. The water permeability imparting agent according to any one of claims 1 to 5 , which is used for fibers.
  7. Water-permeable fiber formed by adhering 0.05 to 5 wt% of the water-permeability imparting agent according to any one of claims 1 to 6 , based on the weight of the hydrophobic fiber.
  8. A nonwoven fabric using the water-permeable fiber according to claim 7 .
  9. A water-absorbent article using a surface material comprising the nonwoven fabric according to claim 8 .
JP2014090852A 2013-04-30 2014-04-25 Permeability imparting agent Active JP6322040B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013095603 2013-04-30
JP2013095603 2013-04-30
JP2014090852A JP6322040B2 (en) 2013-04-30 2014-04-25 Permeability imparting agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014090852A JP6322040B2 (en) 2013-04-30 2014-04-25 Permeability imparting agent

Publications (2)

Publication Number Publication Date
JP2014231666A JP2014231666A (en) 2014-12-11
JP6322040B2 true JP6322040B2 (en) 2018-05-09

Family

ID=52125232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014090852A Active JP6322040B2 (en) 2013-04-30 2014-04-25 Permeability imparting agent

Country Status (1)

Country Link
JP (1) JP6322040B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016096658A (en) 2014-11-14 2016-05-26 トヨタ自動車株式会社 Method for preventing invasion of fuel gas into in-room space of fuel cell mobile body, and the fuel cell mobile body
JP2018035458A (en) * 2016-08-30 2018-03-08 ユニ・チャーム株式会社 Fiber treatment agent for water absorptive article, fiber, uneven fabric and water absorptive article
JP2019002122A (en) * 2017-06-16 2019-01-10 花王株式会社 Absorbent article
JP6291617B1 (en) * 2017-07-12 2018-03-14 ミヨシ油脂株式会社 Non-woven fabric fiber treatment agent and non-woven fabric using the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5130638B2 (en) * 1972-07-12 1976-09-02
JPS622532B2 (en) * 1979-06-04 1987-01-20 Kuraray Co
JPS6314081B2 (en) * 1979-10-18 1988-03-29 Kao Corp
DE3309530C1 (en) * 1983-03-17 1984-10-25 Schickedanz Ver Papierwerk Hygienic absorption pad
DE10206617A1 (en) * 2002-02-15 2003-08-28 Cognis Deutschland Gmbh Aqueous agent for the skin-friendly finishing of nonwovens
JP2004324025A (en) * 2003-04-28 2004-11-18 Sanyo Chem Ind Ltd Durable water permeability-imparting agent and water permeable fiber
JP4691429B2 (en) * 2005-10-13 2011-06-01 竹本油脂株式会社 Synthetic fiber treatment agent and method for manufacturing nonwoven fabric and nonwoven fabric manufacturing fabric
EP1972717B1 (en) * 2007-03-21 2011-10-19 Cognis IP Management GmbH Use of a composition for enhancing the water absorption of textiles
JP6041472B2 (en) * 2011-09-30 2016-12-07 ユニ・チャーム株式会社 Absorbent article, top sheet of absorbent article, and method for producing the top sheet

Also Published As

Publication number Publication date
JP2014231666A (en) 2014-12-11

Similar Documents

Publication Publication Date Title
US5545481A (en) Polyolefin fiber
JP5922623B2 (en) Particulate water-absorbing agent mainly composed of water-absorbing resin, method for producing the same and absorbent article
KR0136575B1 (en) Cardable hydrophobic polypropylene fiber, material and method for preparation thereof
US20110060303A1 (en) Absorbent article including an absorbent core layer having a material free zone and a transfer layer arranged below the absorbent core layer
KR100446342B1 (en) Fluoroalkyl as a hydrophilic additive to the thermoplastic polymer chemical surfactant and hydrocarbon surfactant combination
ES2373584T3 (en) Absorbent article that includes a fibrous sturcture that includes synthetic fibers and a hydrophilizing agent.
JP5122007B1 (en) Absorbent articles
JP3475596B2 (en) Durable hydrophilic fibers, cloth products and moldings
EP0372890A2 (en) Durable hydrophilic fibers
JP4874098B2 (en) Compositions and methods for substrate coating
EP1335756A2 (en) Absorption agents with a high swelling capacity, with a reduced tendency to cake
US4789588A (en) Surface materials for absorptive products
US5972497A (en) Ester lubricants as hydrophobic fiber finishes
US20100028638A1 (en) Absorbent Article With Barrier Component
KR0174206B1 (en) Water repelling fiber and nonwoven fabric made thereof
AU2013227547B2 (en) Absorbent article
AU2013213905B2 (en) Treated apertures
ES2533659T3 (en) High barrier nonwoven material
US9345802B2 (en) Absorbent article with barrier component
CA2727426C (en) Absorbent article with absorbent polymer material, wetness indicator, and reduced migration of surfactant
US20160067118A1 (en) Nonwoven Web
JP2013541537A (en) Absorbent article having anhydrophilic lotion
JP2012526904A (en) Water-stable, oil-modified, non-reactive alkyd resin structural adhesive and use thereof
JP5277131B2 (en) Water permeability imparting agent, water permeable fiber, and method for producing nonwoven fabric
TWI599346B (en) Absorbent resin powder, absorbent article and absorbent article using the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170215

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20170823

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170829

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20171026

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20180403

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20180406

R150 Certificate of patent or registration of utility model

Ref document number: 6322040

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150