CN109642387B - Fiber treatment agent for water-absorbent article, fiber, nonwoven fabric, and water-absorbent article - Google Patents
Fiber treatment agent for water-absorbent article, fiber, nonwoven fabric, and water-absorbent article Download PDFInfo
- Publication number
- CN109642387B CN109642387B CN201780051540.4A CN201780051540A CN109642387B CN 109642387 B CN109642387 B CN 109642387B CN 201780051540 A CN201780051540 A CN 201780051540A CN 109642387 B CN109642387 B CN 109642387B
- Authority
- CN
- China
- Prior art keywords
- water
- treatment agent
- fat
- oil
- fiber treatment
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/20—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing organic materials
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
Abstract
The invention aims to provide a fiber treatment agent for water-absorbing articles, which can make the pH of the surface material of the water-absorbing articles such as paper diapers and sanitary towels show weak acidity, has initial water permeability performance, can have liquid return prevention performance, is not easy to be washed away by moisture such as urine and sweat, and can have repeated water permeability performance; the fiber treatment agent (D) for water-absorbent articles is a fiber treatment agent for water-absorbent articles, which comprises 45 to 95 wt% of a fatty acid (A) derived from oleic acid of a natural oil or fat, a polyalkylene oxide adduct (B) of a natural oil or fat, and a fatty acid ester (C) of a polyalkylene oxide adduct of a natural oil or fat, and is characterized in that the content of the fatty acid (A) is 0.3 to 3.0 wt% based on the total weight of (A), (B) and (C), and the pH of an aqueous solution diluted with water so that the total weight of (A), (B) and (C) is 1 wt% is 4.5 to 6.5.
Description
Technical Field
The present invention relates to a fiber treatment agent for water-absorbent articles, which can maintain the pH of the surface material of water-absorbent articles such as disposable diapers and sanitary napkins to be weakly acidic, has initial and repeated water permeability, and is less likely to be washed away by water such as urine and sweat, and can maintain the pH of the surface material to be weakly acidic.
Background
Generally, dermatitis or diaper rash often occurs when an absorbent article such as a disposable diaper or a sanitary product is used. Diaper rash occurs due to the following causes: ureolytic enzyme bacteria decompose urea to generate ammonia, and as a result, the pH of the skin inclines to the alkaline side. Therefore, in water-absorbent articles such as disposable diapers and sanitary products, the pH of the skin is reduced to an alkaline side by making the surface sheet or the like contacting the skin weakly acidic, and diaper rash is improved. Therefore, the weak acidity of the surface sheet, particularly, which is in direct contact with the skin, has been studied.
For example, patent document 1 describes that a water-permeable agent and citric acid or sodium citrate as a pH adjuster are added to a surface sheet. However, since citric acid used as a pH adjuster is soluble in water, the citric acid adhering to the surface sheet may be washed away by moisture due to repeated excretion of urine or the like. In addition, depending on the amount of excretion, it is also possible to increase the pH of the surface layer of the absorbent article.
Patent document 2 describes the following method: in order to obtain a weakly acidic sheet, a reagent having a pH of 5.0 to 6.0 (containing citric acid as a pH adjuster) is supported on a base paper such as a tissue paper or a nonwoven fabric. However, since the surfactant used for obtaining water permeability is incompatible with citric acid, when citric acid is contained in the surfactant, coagulation and separation occur, and a nonwoven fabric having both weak acidity and water permeability cannot be obtained.
Documents of the prior art
Patent document
Patent document 1: japanese Kokai publication Hei-2003-516778
Patent document 2: japanese laid-open patent publication No. 2010-214030
Disclosure of Invention
Problems to be solved by the invention
The invention aims to provide a fiber treatment agent for water-absorbing articles, which can make the pH of the surface material of the water-absorbing articles such as paper diapers and sanitary towels show weak acidity, has initial water permeability performance, can have liquid return prevention performance, is not easy to be washed away by moisture such as urine and sweat, and can have repeated water permeability performance.
Means for solving the problems
The present inventors have conducted studies to achieve the above object, and as a result, have completed the present invention.
That is, the present invention is a fiber treatment agent (D) for water-absorbent articles, which comprises a fatty acid (a) containing oleic acid derived from natural oils and fats in an amount of 45 to 95% by weight, a polyalkylene oxide adduct of natural oils and fats (B), and a fatty acid ester of polyalkylene oxide adduct of natural oils and fats (C), and which is characterized in that the content of the fatty acid (a) is 0.3 to 3.0% by weight based on the total weight of (a), (B), and (C), and the pH of an aqueous solution diluted with water so that the total weight of (a), (B), and (C) is 1% by weight is 4.5 to 6.5; a fiber to which the fiber treatment agent (D) for water-absorbent articles has been attached; a nonwoven fabric using the fiber; and an absorbent article using a surface material made of the nonwoven fabric.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, there can be provided a fiber treatment agent for water-absorbent articles, which can exhibit weak acidity in pH of the surface material of water-absorbent articles such as disposable diapers and sanitary napkins, and has initial and repeated water permeability, and which is less likely to be washed away by water such as urine and sweat. Therefore, the fiber-treating agent is particularly suitable as a fiber-treating agent for obtaining a surface material of sanitary materials such as disposable diapers and sanitary napkins.
Detailed Description
The fiber treatment agent for water-absorbent articles comprises, from the viewpoint of exhibiting weak acidity even after permeation of water, 45 to 95 wt% of a fatty acid (A) derived from oleic acid of a natural oil or fat, a polyalkylene oxide adduct of a natural oil or fat (B), and a fatty acid ester of a polyalkylene oxide adduct of a natural oil or fat (C), and is characterized in that the content of the fatty acid (A) is 0.3 to 3.0 wt% based on the total weight of (A), (B) and (C), and the pH of an aqueous solution diluted with water so that the total weight of (A), (B) and (C) is 1 wt% is 4.5 to 6.5.
In the case where the fatty acid (a) is not contained, the pH of the nonwoven fabric using the fiber to which the fiber treatment agent for a water-absorbent article is attached is greater than 6.5.
Specific examples of the fatty acid (a) containing 45 to 95 wt% of oleic acid derived from natural oils and fats include fatty acids containing 45 to 95 wt% of oleic acid among plant-derived fatty acids such as palm oil fatty acid, olive oil fatty acid, rice bran oil fatty acid, rice germ oil fatty acid, and rapeseed oil fatty acid. Among these, palm oil fatty acid and rice germ oil fatty acid are preferable.
The fatty acids derived from natural oils and fats are usually a mixture of saturated fatty acids having 8, 10, 12, 14, 16, 18, 20, 22, and 24 carbon atoms and/or unsaturated fatty acids having 16, 18, 20, and 22 carbon atoms.
Fatty acids derived from natural oils and fats, particularly fatty acids derived from vegetable oils and fats, have a merit of being used as cosmetics and human body detergents to be directly applied to human skin, and they are used for explanation to give a sense of reassurance to consumers.
The natural oil-and-fat-derived fatty acid (a) used in the present invention is required to contain 45 to 95% by weight of oleic acid, preferably 60 to 95% by weight, and more preferably 80 to 95% by weight, from the viewpoints of maintaining the adsorbability on fibers and reducing the irritation to the skin.
The polyalkylene oxide adduct (B) of a natural fat or oil used in the present invention is preferably derived from a vegetable fat or oil.
The polyalkylene oxide adduct (B) of a natural oil or fat is derived from a vegetable oil or fat, and a part of the components constituting the polyalkylene oxide adduct (B) of a natural oil or fat is derived from a vegetable oil or fat. Typically, the natural oil-and-fat-containing compound is a vegetable oil-and-fat compound. That is, the polyalkylene oxide adduct (B) of a natural fat or oil derived from a vegetable fat or oil contains a compound obtained by artificially adding an oxyalkylene group to a vegetable fat or oil.
The polyalkylene oxide adduct (B) of natural oils and fats is preferably derived from castor oil. Particularly, from the viewpoint of emulsion stability, preferred are an EO10 mol adduct of castor oil, an EO20 mol adduct of castor oil, an EO25 mol adduct of castor oil, an EO45 mol adduct of castor oil, and the like.
Here, EO means ethylene oxide.
The fatty acid ester (C) of the polyalkylene oxide adduct of a natural fat or oil used in the present invention is preferably derived from a vegetable fat or oil.
The fatty acid ester (C) of a polyalkylene oxide adduct of a natural oil or fat is derived from a vegetable oil or fat, and a part of the component constituting the fatty acid ester (C) of a polyalkylene oxide adduct of a natural oil or fat is derived from a vegetable oil or fat. Typically, the natural oil-and-fat-containing compound is a vegetable oil-and-fat compound. That is, the fatty acid ester (C) of a polyalkylene oxide adduct of a natural fat or oil derived from a vegetable fat or oil contains a compound obtained by artificially adding an oxyalkylene group to a vegetable fat or oil and further esterifying the resultant product.
The fatty acid ester (C) of the polyalkylene oxide adduct of natural oils and fats is preferably derived from castor oil. In particular, from the viewpoint of emulsion stability and repeated water permeability, trilaurate ester of EO10 mole adduct of castor oil, dioleate ester of EO20 mole adduct of castor oil, dioleate ester of EO25 mole adduct of castor oil, tristearate ester of EO45 mole adduct of castor oil, and the like are preferable.
The content of the fatty acid (a) is 0.3 to 3.0% by weight, preferably 0.6 to 2.6% by weight, based on the total weight of (a), (B) and (C), from the viewpoint of improving the emulsion stability and initial hydrophilicity. If the content of fatty acid (A) is less than 0.3% by weight, the pH when diluted with water is greater than 6.5 in such a manner that the total weight of (A), (B) and (C) is 1% by weight. On the other hand, if it exceeds 3.0% by weight, initial hydrophilicity is deteriorated.
The fiber treatment agent (D) for water-absorbent articles of the present invention preferably further contains a natural oil or fat (E).
By further containing the natural oil or fat (E), the slidability and adsorbability of the fibers can be dramatically improved. Therefore, physical irritation to the skin can be suppressed. When only natural oils and fats are used as the fiber-treating agent, the emulsifying property is poor.
Specific examples of the natural oil or fat (E) to be contained for this purpose include animal-derived oils and fats such as beef tallow and lard, and vegetable-derived oils and fats such as palm oil, olive oil, rice bran oil, rice germ oil and rapeseed oil.
Among these, vegetable fats and oils are preferable, and palm oil, rice bran oil, and rice germ oil are preferable.
Natural oils and fats, particularly vegetable oils and fats, have a merit of being used as cosmetics and human body detergents to be directly applied to human skin, and the use of these oils and fats will bring a sense of security to consumers. In particular, palm oil is preferably used as a raw material for detergents and foods, and rice bran oil and rice germ oil are preferably used for bath agents and the like because of their long experience.
The fiber treatment agent (D) for water-absorbent articles of the present invention may contain a surfactant (F) as needed.
The surfactant (F) does not contain the polyalkylene oxide adduct (B) of a natural oil or fat and the fatty acid ester (C) of a polyalkylene oxide adduct of a natural oil or fat.
Examples of the surfactant (F) include a nonionic surfactant (F1), an anionic surfactant (F2), and an amphoteric surfactant (F3).
Examples of the nonionic surfactant (F1) include alkylene oxide adducts of active hydrogen compounds such as alcohols, amines and carboxylic acids, esters thereof, and esters of polyhydric alcohols.
Specifically, there may be mentioned EO5 molar adduct of lauryl alcohol, EO20 molar adduct of sorbitan monolaurate, and the like.
Examples of the anionic surfactant (F2) include alkylsulfonates and alkyl phosphate salts.
The number of carbon atoms of the alkyl group constituting the alkylsulfonate is preferably 6 to 20, more preferably 8 to 16, and still more preferably 10 to 14. The alkyl group may be either a straight chain or a branched chain.
Specific examples of the alkylsulfonic acid salt include potassium octylsulfonate, sodium dodecylsulfonate, sodium tetradecylsulfonate, and sodium hexadecylsulfonate.
Examples of the alkyl phosphate ester salts include potassium phosphate ester of octanol, potassium phosphate ester of isodecanol, potassium phosphate ester of dodecanol, sodium phosphate ester of the EO2 mol adduct of octanol, and sodium phosphate ester of the EO5 mol adduct of hexadecanol.
Examples of the amphoteric surfactant (F3) include a carboxylate type amphoteric surfactant, a sulfate type amphoteric surfactant, a sulfonic acid type amphoteric surfactant, and a phosphate type amphoteric surfactant, and further examples of the carboxylate type amphoteric surfactant include an amino acid type amphoteric surfactant and a betaine type amphoteric surfactant.
The fiber treatment agent (D) for water-absorbent articles of the present invention may contain other additives (G) as needed.
Examples of the additive (G) include an antifoaming agent, a preservative, and a perfume.
The fiber treatment agent (D) for water-absorbent articles of the present invention is obtained by mixing other components (a), (B) and (C), and if necessary, (E), (F) and (G), and heating (for example, 30 to 70 ℃) at room temperature or if necessary, and uniformly mixing them. The order of mixing the components and the method of mixing are not particularly limited. In addition, water may be mixed as needed.
The fiber treatment agent (D) for water-absorbent articles of the present invention is a mixture of (a), (B) and (C), and may be attached to fibers or the like in a state in which a component such as (E) is added thereto, or may be attached to fibers or the like in a state in which it is diluted with water to prepare an aqueous emulsion.
The fiber treatment agent (D) for water-absorbent articles of the present invention can be used for fiber applications.
The fibers are preferably nonwoven fabric products used for nonwoven fabric products, particularly surface sheets of disposable diapers, synthetic sanitary napkins and the like.
The fiber treatment agent (D) for water-absorbent articles of the present invention is attached to the fibers, and can impart durable water permeability to the fibers, thereby producing the fibers of the present invention.
The method for adhering the fiber treatment agent for water-absorbent articles to the fibers is not particularly limited, and a commonly used method such as an oiling roller method, a dipping method, a spraying method, and the like can be used in any step such as spinning and drawing.
The amount of the fiber treatment agent (D) to be attached to the water-absorbent article is preferably 0.05 to 5% by weight, more preferably 0.1 to 2% by weight, in terms of solid content, based on the weight of the fiber.
The fibers used in the present invention are hydrophobic fibers having a water absorption of 1 wt% or less at a temperature of 25 ℃ and a relative humidity of 65%.
The type of the fiber is not particularly limited, and a hydrophobic synthetic fiber generally used can be used, and examples thereof include polyolefin, polyester, and polyamide.
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 nylon-6, 6 and nylon-6.
Of these, polyolefin and polyester are preferably used as the water absorbent material for diapers.
The fiber form of the fibers to which the fiber treatment agent (D) for water-absorbent articles of the present invention is attached is preferably a cloth-like form, and examples thereof include woven fabrics, knitted fabrics, nonwoven fabrics and the like.
Further, fibers blended by a method such as cotton blending, fiber blending, cross knitting, or interweaving may be used in a cloth form. Among these, nonwoven fabrics are particularly preferable.
When the fiber treatment agent (D) for water-absorbent articles of the present invention is applied to a nonwoven fabric, the short fibers to which the fiber treatment agent (D) for water-absorbent articles of the present invention is attached may be formed into a fiber laminate by a dry or wet method, and then the fiber laminate is pressed by a heating roll, or thermally bonded by air heating, or entangled with fibers by a high-pressure water flow to form a nonwoven fabric, or the fiber treatment agent (D) for water-absorbent articles of the present invention may be attached to a nonwoven fabric obtained by a spunbond method, a melt-blown method, a flash spinning method, or the like.
The fiber of the present invention and the nonwoven fabric using the fiber are suitably used as a surface material for water-absorbent articles, particularly a surface material for sanitary materials such as disposable diapers and sanitary napkins.
In addition, the sheet can be used for a second sheet, a water-absorbent body, a wipe for industrial or medical use, an absorbent pad, a water-permeable sheet, and the like.
Examples
The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples.
Production example 1 [ production of dioleate (C-1) of EO25 mol adduct of Castor oil ]
880 parts by weight of EO25 molar adduct of castor oil (trade name "BLAUNON BR-425", manufactured by Rough fat & oil) and 270 parts by weight of oleic acid (trade name "LUNAC O-V", manufactured by Kao) were put into a reaction vessel equipped with a stirrer and a thermometer, and 4.0 parts by weight of sodium p-toluenesulfonate as a catalyst was added thereto and replaced with nitrogen. The temperature was raised to 150 ℃ and the reaction was carried out for 12 hours, whereby dioleate (C-1) which is an EO25 molar adduct of castor oil was obtained.
Production example 2 [ production of dioleate (C-2) of EO20 mol adduct of Castor oil ]
715 parts by weight of an EO20 molar adduct of castor oil (trade name "BLAUNON BR-420", manufactured by Rauwolfia oil & fat) and 185 parts by weight of oleic acid (LUNAC O-V, manufactured by Kao corporation) were put into a reaction vessel equipped with a stirrer and a thermometer, and 4.0 parts by weight of sodium p-toluenesulfonate as a catalyst was added thereto and replaced with nitrogen. The temperature was raised to 150 ℃ and the reaction was carried out for 12 hours, whereby dioleate (C-2) which is an EO20 molar adduct of castor oil was obtained.
< example 1>
1.5 parts by weight of a fatty acid (A-1) having an oleic acid content of 65% by weight, 60.0 parts by weight of an EO25 mol adduct of castor oil (B-1), 10.0 parts by weight of a dioleate (C-1) of an EO25 mol adduct of castor oil, 24.0 parts by weight of a dioleate (C-2) of an EO20 mol adduct of castor oil, and 4.5 parts by weight of rapeseed oil (E-1) were charged in a beaker, and stirred at 40 ℃ for 30 minutes to obtain a fiber-treating agent (D-1) for a water-absorbent article of the present invention.
< examples 2 to 4 and comparative examples 1 to 4>
The components were mixed in the same manner as in example 1 according to the compounding formulation shown in Table 1 to obtain the fiber-treating agents (D-2) to (D-4) for water-absorbent articles of examples 2 to 4 and the fiber-treating agents (D '-1) to (D' -4) for water-absorbent articles of comparative examples 1 to 4.
[ TABLE 1 ]
The abbreviations in table 1 are as follows.
(A-1): fatty acid having an oleic acid content of 65% by weight (trade name "NAA-38S" (manufactured by Nichisu oil))
(A-2): fatty acid having an oleic acid content of 47% by weight (trade name "PM-200" (manufactured by MIYOSHI OIL & FAT))
(A' -1): fatty acid having oleic acid content of 14% by weight (trade name "PALMAC 505" (manufactured by ACIDCHEM INTERNATIONAL SDN. BHD))
(A' -2): citric acid (chemical manufacture of Pantian)
(B-1): EO25 mol adduct of Castor oil (trade name "BLAUNON BR-425" (manufactured by Bakelite oil & fat))
(B-2): EO20 mol adduct of Castor oil (trade name "BLANON BR-420" (manufactured by Bakelite oil & fat))
(C-1): dioleate of EO25 molar adduct of castor oil
(C-2): dioleate of EO20 molar adduct of castor oil
(E-1): rapeseed oil (trade name "refined rapeseed oil" (manufactured by Riqing Oligomo))
(E-2): rice germ oil (trade name "PRO-15" (manufactured by architectural and picnic industries))
The physical properties of the fiber treatment agent for a water-absorbent article were measured, and fibers of a nonwoven fabric were treated to evaluate the following properties. The results are shown in Table 1.
[ evaluation of physical Properties of fiber treatment agent for Water-absorbent article (pH of 1 wt.% aqueous solution) ]
The obtained fiber treatment agent for water-absorbent articles was added to a beaker, diluted with ion-exchanged water so that the concentration of the total amount of (a), (B), and (C) was 1 wt%, and the pH of the aqueous solution thereof was measured with a pH meter.
In comparative examples 1 and 2, the blending amounts of (A '-1) and (A' -2) were calculated as the blending amount of (A).
[ method for producing treating liquid ]
The obtained fiber treatment agent for water-absorbent articles was diluted in ion-exchanged water so that the concentration of the total amount of (A), (B) and (C) was 0.5% by weight, to obtain a water-diluted solution of the fiber treatment agent for water-absorbent articles.
[ method for producing treated nonwoven Fabric ]
The fibers for a water-absorbent article obtained by the above-mentioned method were combined so that the concentration of the total amount of (A), (B) and (C) after drying (amount of deposition on the nonwoven fabric) was 0.5% by weightThe treating agent diluent was applied to a basis weight of 18g/m2On a polypropylene spunbond nonwoven.
As a specific coating method, the water-absorbent article is immersed in a fiber treatment agent diluted solution for water-absorbent articles in an oil bath, then subjected to padding (padding ratio 100%) by a padding machine, dried at 50 ℃ for 30 minutes by a circulating air dryer, and left at room temperature for 8 hours or more to dry.
[ Performance evaluation items ]
< pH of component extracted and recovered from surface of nonwoven Fabric >
(1) A disposable wiping towel ("kimtopael", NIPPON PAPER towel, manufactured by ltd.) was laid, and a treated nonwoven fabric (attachment amount 0.5 wt%, size: 10cm × 10cm) coated with a fiber treatment agent for an absorbent article was placed thereon.
(2) After a SUS ring (inner diameter: 6cm, height: 6cm) was placed on the treated nonwoven fabric and 50ml of ion-exchanged water was permeated therethrough, the treated nonwoven fabric was dried at 40 ℃ for 8 hours. 100 sheets of the treated nonwoven fabric were produced.
(3) The 20 treated nonwoven fabrics obtained in (2) were subjected to oil extraction with an organic solvent (diethyl ether/ethanol in weight ratio: 4/1) using a rapid oil extractor. Heating the extracted organic solvent containing oil at 40 deg.C for 8 hr to evaporate the organic solvent to obtain oil.
This operation was performed 5 times, and 100 sheets in total were collected in the same container.
(4) The amount of the obtained component was calculated, and the total concentration of (a), (B) and (C) was diluted with ion-exchanged water so as to be 1 wt%, and the pH was measured with a pH meter.
Under the evaluation conditions, the pH is preferably 4.5 to 6.5.
< evaluation of initial Water permeability of nonwoven Fabric >
(1) The treated nonwoven fabric (10 cm. times.10 cm) was superposed on a filter paper (Toyo Filter paper, No.5) cut into 10 cm. times.10 cm.
(2) 1 drop (about 0.05ml) of physiological saline was dropped from a burette set at a height of 10mm from the surface of the nonwoven fabric, and the time until the drop disappeared from the surface of the nonwoven fabric was measured.
20 spots were formed on the surface of the nonwoven fabric, and the number of positions where the physiological saline disappeared in less than 5 seconds was marked with a marker pen by measuring the 20 spots.
Under these evaluation conditions, it is generally preferable that 18 or more are used.
< evaluation of Water permeability of nonwoven Fabric >
The number of disappearance of physiological saline was measured 5 times at 1 minute intervals by the same method as the method for evaluating the initial water permeability of the nonwoven fabric.
In this trial and error, the nonwoven fabric having a large number of disappeared physiological saline solutions (the number of positions having disappeared time less than 5 seconds) was excellent in repeated water permeability even after repeated many times.
Under such evaluation conditions, it is generally preferable that the number of 5 th test pieces is 15 or more.
< liquid Permeability >
(1) Measurement for the 1 st time: a test nonwoven fabric (10 cm. times.10 cm) was placed on a filter paper (No. 424(10 cm. times.10 cm) manufactured by ADVANTEC).
(2) Further, a cylindrical liquid-permeable plate (inner diameter: 3.3cm) was placed thereon, and 5ml of physiological saline (NaCl solution) was allowed to permeate, and the passage time thereof was measured. The shorter the liquid permeation time, the faster the liquid permeation rate, and the more excellent the liquid permeability.
(3) Measurement after 2 nd time: the above-described method was performed 2 times at 1 minute intervals, and the liquid permeation time was measured. This operation was carried out up to 5 th.
(4) Under these evaluation conditions, it is generally preferable that the 1 st time is 12.5 seconds or less and the 3 rd time is 14.0 seconds or less.
< liquid Return prevention >
(1) A treated nonwoven fabric (10 cm. times.10 cm) was placed on a commercially available disposable diaper, and a SUS ring (6 cm in inner diameter and 6cm in height) was placed thereon, through which 100ml of physiological saline was allowed to permeate and be absorbed by the disposable diaper.
(2) After the physiological saline was completely absorbed by the disposable diaper, the SUS ring was removed, 20 pieces of filter paper (Toyo Filter paper, No.5, 10 cm. times.10 cm) weighed in advance were stacked, and a weight of 5kg (bottom area 10 cm. times.10 cm) was placed thereon.
(3) After leaving for 5 minutes, the weight of the filter paper was measured, and the weight gain was determined as the amount of liquid returned (g).
(4) Under these evaluation conditions, the amount of the reflux liquid is usually preferably 1.2g or less, more preferably 1.0g or less.
From the results shown in Table 1, it was found that the fiber treatment agents for water-absorbent articles of examples 1 to 4 can maintain the pH of the nonwoven fabric surface at 4.5 to 6.5 even after liquid penetration, and are excellent in all of initial water permeability, repeated water permeability, liquid permeability and liquid-returning prevention property.
On the other hand, in the case of using the fiber treatment agent for a water-absorbent article of comparative example 1 containing fatty acid (a' -1) derived from natural oil and fat but containing oleic acid only in an amount of 14% by weight, the pH of the component collected from the nonwoven fabric became high.
In comparative example 2 using citric acid (a' -2) which is not derived from natural oils and fats, the pH of the components collected from the nonwoven fabric was increased as in comparative example 1.
In the case of comparative example 3 in which the content of fatty acid (a) was less than 0.3% by weight based on the total weight of (a), (B) and (C), the pH of the stage of the 1% by weight aqueous solution was 6.8, which was not in the range of 4.5 to 6.5. Since the pH is not in a weakly acidic region, skin rash may occur.
On the other hand, in the case of comparative example 4 in which the content of fatty acid (a) was more than 3.0% by weight based on the total weight of (a), (B) and (C), the pH of the 1% by weight aqueous solution was 4.1, and was not in the range of 4.5 to 6.5.
Industrial applicability
The fibers treated with the fiber treatment agent for water-absorbent articles of the present invention and the nonwoven fabric using the fibers are suitable as a surface material for water-absorbent articles, particularly a surface material for sanitary materials such as disposable diapers and sanitary napkins. In addition, the present invention can also be used for a second sheet, a water-absorbent body, a wipe for industrial or medical use, an absorbent pad, a water-permeable sheet, and the like.
Claims (10)
1. A fiber treatment agent D for water-absorbent articles, which comprises a fatty acid A derived from oleic acid of natural oils and fats in an amount of 45 to 95 wt.%, a polyalkylene oxide adduct B of natural oils and fats, and a fatty acid ester C of a polyalkylene oxide adduct C of natural oils and fats, characterized in that the content of the fatty acid A is 0.3 to 3.0 wt.% based on the total weight of A, B and C, and the pH of an aqueous solution diluted with water so that the total weight of A, B and C is 1 wt.% is 4.5 to 6.5.
2. The fiber treatment agent D for water-absorbent articles according to claim 1, wherein the fatty acid A is a fatty acid containing oleic acid derived from vegetable fat.
3. The fiber treatment agent D for water-absorbent articles according to claim 1, wherein the polyalkylene oxide adduct B of natural oil or fat and the fatty acid ester C of a polyalkylene oxide adduct of natural oil or fat are derived from vegetable oil or fat.
4. The fiber treatment agent D for water-absorbent articles according to claim 3, wherein the polyalkylene oxide adduct B of natural oil or fat and the fatty acid ester C of polyalkylene oxide adduct of natural oil or fat are derived from castor oil.
5. The fiber treatment agent D for water-absorbent articles according to any one of claims 1 to 4, further comprising a natural oil E.
6. The fiber treatment agent D for water-absorbent articles according to claim 5, wherein the natural oil or fat E is a vegetable oil or fat.
7. The fiber treatment agent D for water-absorbent articles according to any one of claims 1 to 4 or 6, wherein the fiber treatment agent D for water-absorbent articles is composed of only components derived from vegetable fats and oils.
8. A fiber to which the fiber treatment agent D for water-absorbent articles according to any one of claims 1 to 7 is attached.
9. A nonwoven fabric using the fiber according to claim 8.
10. An absorbent article using a surface material comprising the nonwoven fabric according to claim 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-167801 | 2016-08-30 | ||
| JP2016167801A JP6687484B2 (en) | 2016-08-30 | 2016-08-30 | Fiber treatment agent for absorbent articles, fibers, non-woven fabrics and absorbent articles |
| PCT/JP2017/029042 WO2018043087A1 (en) | 2016-08-30 | 2017-08-10 | Fiber treating agent for water absorbent article, fiber, nonwoven fabric and water absorbent article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109642387A CN109642387A (en) | 2019-04-16 |
| CN109642387B true CN109642387B (en) | 2021-10-26 |
Family
ID=61300590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780051540.4A Active CN109642387B (en) | 2016-08-30 | 2017-08-10 | Fiber treatment agent for water-absorbent article, fiber, nonwoven fabric, and water-absorbent article |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6687484B2 (en) |
| CN (1) | CN109642387B (en) |
| WO (1) | WO2018043087A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6490883B1 (en) | 2019-01-16 | 2019-03-27 | 竹本油脂株式会社 | Treatment agent for polyolefin nonwoven fabric and polyolefin nonwoven fabric |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292732C (en) * | 1999-09-28 | 2007-01-03 | 宝洁公司 | Article having transferable breathable skin care composition thereon |
| CN102695482A (en) * | 2009-12-30 | 2012-09-26 | 宝洁公司 | Wipe article comprising lotion composition comprising omega-6 fatty acid |
| CN103502517A (en) * | 2011-04-27 | 2014-01-08 | 三井化学株式会社 | Fiber, non-woven fabric and use thereof |
| JP2014231666A (en) * | 2013-04-30 | 2014-12-11 | 三洋化成工業株式会社 | Water permeability imparting agent |
| WO2016121673A1 (en) * | 2015-01-26 | 2016-08-04 | 三洋化成工業株式会社 | Water-permeability-imparting agent, water-permeable fiber, non-woven fabric, and water-absorbing article |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7531196B2 (en) * | 2003-05-30 | 2009-05-12 | Pacific Specialty Oils, Inc. | Cosmeceutical formulation containing palm oils |
| JP6001207B1 (en) * | 2016-06-30 | 2016-10-05 | ユニ・チャーム株式会社 | Absorbent articles |
-
2016
- 2016-08-30 JP JP2016167801A patent/JP6687484B2/en active Active
-
2017
- 2017-08-10 WO PCT/JP2017/029042 patent/WO2018043087A1/en active Application Filing
- 2017-08-10 CN CN201780051540.4A patent/CN109642387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292732C (en) * | 1999-09-28 | 2007-01-03 | 宝洁公司 | Article having transferable breathable skin care composition thereon |
| CN102695482A (en) * | 2009-12-30 | 2012-09-26 | 宝洁公司 | Wipe article comprising lotion composition comprising omega-6 fatty acid |
| CN103502517A (en) * | 2011-04-27 | 2014-01-08 | 三井化学株式会社 | Fiber, non-woven fabric and use thereof |
| JP2014231666A (en) * | 2013-04-30 | 2014-12-11 | 三洋化成工業株式会社 | Water permeability imparting agent |
| WO2016121673A1 (en) * | 2015-01-26 | 2016-08-04 | 三洋化成工業株式会社 | Water-permeability-imparting agent, water-permeable fiber, non-woven fabric, and water-absorbing article |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109642387A (en) | 2019-04-16 |
| JP2018035458A (en) | 2018-03-08 |
| JP6687484B2 (en) | 2020-04-22 |
| WO2018043087A1 (en) | 2018-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6322040B2 (en) | Permeability imparting agent | |
| JP6412172B2 (en) | Water permeability imparting agent, water permeable fiber, nonwoven fabric and water absorbent article | |
| KR102106115B1 (en) | Composition for permanently hydrophilizing polyolefin fibers and use thereof | |
| JP6863741B2 (en) | Method for manufacturing fiber treatment agent, water-permeable fiber to which it is attached, and non-woven fabric | |
| JP6818384B2 (en) | Fiber treatment agent, method of manufacturing water-permeable fiber and non-woven fabric to which it is attached | |
| JP5159534B2 (en) | Water permeability imparting agent, water permeable fiber to which it is attached, and method for producing nonwoven fabric | |
| JP2019218641A (en) | Treatment agent for polyolefin-based nonwoven fabric, polyolefin-based synthetic fiber and treatment method for polyolefin-based synthetic fiber | |
| JP7100504B2 (en) | Hydrophilizing agent | |
| JP2015120984A (en) | Fiber product | |
| CN109642387B (en) | Fiber treatment agent for water-absorbent article, fiber, nonwoven fabric, and water-absorbent article | |
| US20160281293A1 (en) | Use of a surfactant composition for the hydrophilic finishing of textile fibers and textile products manufactured therefrom | |
| CN107109774B (en) | Composition for permanently hydrophilically finishing textile fibers and textile articles | |
| JP4520631B2 (en) | Durable water permeability-imparting agent and its fiber | |
| JP2018084004A (en) | Water permeability-imparting agent and use thereof | |
| JP7025594B1 (en) | Treatment agent for water-repellent fiber and its use | |
| JP3057521B2 (en) | Polyolefin fiber durable hydrophilizing agent | |
| JP5759160B2 (en) | Internal addition type hydrophilizing agent and its use | |
| JP6652629B2 (en) | Wool treatment methods and products | |
| JP6490883B1 (en) | Treatment agent for polyolefin nonwoven fabric and polyolefin nonwoven fabric | |
| JP2004324025A (en) | Durable water permeability-imparting agent and water permeable fiber | |
| JP6994612B1 (en) | Permeability enhancer and its use | |
| JP7423404B2 (en) | Water permeability imparting agent and its use | |
| JP7432804B2 (en) | Fiber treatment agent for nonwoven fabric production and its use | |
| JP2014109078A (en) | Water permeability imparting agent and water permeable fiber | |
| JP7342256B2 (en) | Non-cytotoxic hydrophilic modified coating agent for non-woven fabric, non-cyto-toxic non-woven fabric containing the same, and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |