CN110892108B - Fiber treatment agent for nonwoven fabric and nonwoven fabric using same - Google Patents
Fiber treatment agent for nonwoven fabric and nonwoven fabric using same Download PDFInfo
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- CN110892108B CN110892108B CN201880046916.7A CN201880046916A CN110892108B CN 110892108 B CN110892108 B CN 110892108B CN 201880046916 A CN201880046916 A CN 201880046916A CN 110892108 B CN110892108 B CN 110892108B
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- 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
- D06M13/244—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 sulfur or phosphorus
- D06M13/282—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 sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
- D06M13/295—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof containing polyglycol moieties; containing neopentyl moieties
-
- 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
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
-
- 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
- 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
- D06M13/244—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 sulfur or phosphorus
- D06M13/282—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 sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; 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
- 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
Abstract
The invention provides a fiber treatment agent for a nonwoven fabric, which can endow the nonwoven fabric with hydrophilicity and repeated water permeability and can inhibit transfer printing to other parts of an article using the nonwoven fabric. The fiber treatment agent for nonwoven fabric of the present invention contains the following component (a) and component (B). (A): at least one selected from alkyl phosphate salts and polyoxyalkylene alkyl ether phosphate salts. (B): at least one selected from the group consisting of polyol fatty acid esters, polyoxyalkylene polyol fatty acid esters, and naturally derived waxes having a melting point of 15 ℃ or higher.
Description
Technical Field
The present invention relates to a fiber treatment agent for nonwoven fabrics and nonwoven fabrics using the fiber treatment agent for nonwoven fabrics.
Background
Various base agents have been studied for fiber-treating agents for nonwoven fabrics, and among them, alkyl phosphate salts and derivatives thereof have been widely used as hydrophilicity-imparting agents because of their high safety, performance, suitability as process oils, and the like (patent documents 1 to 8).
In the design of reagent compounding using alkyl phosphate and derivatives thereof, the hydrophilic performance is controlled by the ratio of alkyl chain length in the compounding base in many cases, and phosphate with long and short alkyl chains needs to be compounded more in order to improve the hydrophilic performance and the processing adaptability.
Documents of the prior art
Patent literature
Patent document 1: japanese patent laid-open No. 2014-109078;
patent document 2: japanese patent laid-open publication No. 2016-216878;
patent document 3: japanese patent laid-open No. 2001-003271;
patent document 4: japanese patent laid-open publication No. 2004-076165;
patent document 5: japanese patent laid-open publication No. 2011-074500;
patent document 6: japanese patent laid-open publication No. 2015-094060;
patent document 7: japanese patent laid-open publication No. 2014-231666;
patent document 8: japanese patent laid-open No. 3-193971.
Disclosure of Invention
Problems to be solved by the invention
However, when a large amount of phosphate ester having a short alkyl chain is used, a reagent applied to a nonwoven fabric may stain (transfer) a portion which is not desired to be stained, and for example, water repellency of a wrinkled portion of a diaper is significantly deteriorated, thereby deteriorating performance and quality of an article which is a final product.
That is, since a phosphate ester salt having a short alkyl chain is a strongly hydrophilizing base and its holding action on hydrophobic fibers is temporary, most of the hydrophilizing agent is washed away when water is applied, which is a typical phenomenon. As described above, since the retention force on the hydrophobic fibers is weak, when an article to be processed into a predetermined intended use is manufactured using the nonwoven fabric subjected to the agent adhesion treatment, for example, when the nonwoven fabric is stacked or folded, or is brought into contact with other materials, members, or processing machines, or is bonded and fixed to each other by a method such as hot melt bonding or thermal bonding, or is packaged, the agent adhered to the fibers is transferred to a portion where contamination is not desired, and there is a problem that the performance and quality of the article are deteriorated.
In the prior art techniques such as patent documents 1 to 8, no attention has been paid to the problem of suppressing transfer of an agent, and a technique for suppressing transfer of an agent, which has been attached to a fiber, to an undesired contaminated site while satisfying conventionally required hydrophilicity and repeated water permeability, and in particular, a technique for preventing contamination of other sites on an article even when a strongly hydrophilizing base agent is used has been desired.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a fiber treatment agent for a nonwoven fabric, which can impart hydrophilicity and repeated water permeability to the nonwoven fabric and can suppress transfer to other portions on an article using the nonwoven fabric.
Means for solving the problems
As a result of intensive studies to solve the above problems, the present inventors have found that a fiber treatment agent for nonwoven fabrics, which is less likely to cause transfer from nonwoven fabrics to other parts even when an alkyl phosphate or the like having hydrophilicity, particularly a phosphate having a short alkyl chain, is used, and which is excellent in hydrophilicity and transfer inhibition properties, is obtained by using a polyhydric alcohol fatty acid ester or the like having a melting point of 15 ℃.
That is, the fiber treatment agent for nonwoven fabrics of the present invention contains the following component (a) and component (B).
(A) The method comprises the following steps At least one selected from alkyl phosphate salts and polyoxyalkylene alkyl ether phosphate salts;
(B) The method comprises the following steps At least one selected from polyol fatty acid ester, polyoxyalkylene polyol fatty acid ester and natural wax having a melting point of 15 ℃ or higher;
the nonwoven fabric of the present invention is a nonwoven fabric having fibers subjected to an adhesion treatment using the fiber treatment agent for nonwoven fabrics.
Effects of the invention
According to the present invention, hydrophilicity and repeated water permeability can be imparted to a nonwoven fabric, the nonwoven fabric has permeability to fibers, and transfer to other portions of an article using the nonwoven fabric can be suppressed.
Detailed Description
The present invention will be described in detail below.
Since it is necessary to control the water absorption rate of a nonwoven fabric fiber treatment agent used as a hydrophilizing agent for sanitary materials and the like so as to accelerate surface absorption and reach a high-absorbency resin and the like, and since it is also considered to be an important aspect of repeated water permeability (durability), it is necessary to inevitably add a hydrophilizing base agent having high hydrophilicity, but it is necessary to add such a base agent so as not to contaminate other places. Therefore, in the present invention, by using a polyhydric alcohol fatty acid ester or the like having a melting point of 15 ℃ or higher as the component (B), an alkyl phosphate ester salt or the like of the component (a) which is a temporary hydrophilizing agent that is mostly washed away when water is applied when used alone is slowly released. Consider that: when the fiber treatment agent for nonwoven fabric is attached to the fiber, the component (a) is oriented on the fiber surface so that the hydrophilic portion in the molecular structure thereof becomes the surface and the hydrophobic portion becomes the back surface, and is a component (B) of hydrophobic wax having a melting point of a certain degree or higher, which holds the hydrophobic portion of the component (a) on the hydrophobic fiber surface. Therefore, it is considered that: when moisture is applied, the component (a) is gradually washed away locally by the action of the component (B) to retain it, and therefore functions as a hydrophilizing agent having light durability, whereby transfer to other sites on an article using a nonwoven fabric can be suppressed.
In the present invention, the main criteria for suppressing transfer are, for example, the measurement methods described in the examples: in the measurement of water resistance using a measuring apparatus based on the method a (low water pressure method) of the water resistance test (hydrostatic method), the reduction rate of water resistance based on a blank value is 30% or less, particularly preferably 20% or less, and most preferably 10%. Within this range, when the nonwoven fabric is laminated, folded, brought into contact with other materials, members, processing machines, or bonded, fixed, or packaged by a method such as hot melt bonding or thermal bonding to produce an article, the effect of suppressing the deterioration of the properties and quality of the article, such as transfer of the agent adhering to the fibers to a portion where contamination is not desired, can be suitably exhibited.
The component (a) used in the fiber treatment agent for nonwoven fabrics of the present invention is at least one selected from alkyl phosphate salts and polyoxyalkylene alkyl ether phosphate salts. The component (A) preferably contains a phosphoric monoester salt and/or a phosphoric diester salt represented by the following formula (I) as a main component, and the content of the phosphoric monoester salt is the largest. In addition, the component (A) may contain polyphosphate or the like. Typically, component (a) is a mixture of these.
[ chemical formula 1]
[RO(AO) m ] 3-n P(＝O)(OM) n (I)
( In the above formula, R represents an alkyl group, AO represents an oxyalkylene group (A is an alkylene moiety), M represents a cation, M represents an average addition mole number of a polyoxyalkylene, and n represents an integer of 1 or 2. When a plurality of R and M are used in each formula, they may be the same or different. The AOs may be the same or different from each other. )
The component (a) which is a mixture of the phosphoric acid monoester salt, the phosphoric acid diester salt, and the like can be obtained by neutralizing an alkyl phosphate or a polyoxyalkylene alkyl ether phosphoric acid obtained by reacting an alkyl alcohol or a polyoxyalkylene alkyl ether having a corresponding alkyl group with a phosphoric anhydride with a base such as potassium hydroxide.
The number of carbon atoms of the alkyl group in the component (a) is not particularly limited, but is preferably 4 to 22, more preferably 6 to 18.
Examples of the alkyl group include butyl, hexyl, octyl, 2-ethylhexyl (isooctyl), nonyl, decyl, undecyl, dodecyl (lauryl), tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl (stearyl), nonadecyl, eicosyl, heneicosyl, and docosyl. The component (a) may be a mixture of compounds having different alkyl groups, and in this case, the number of carbon atoms in the alkyl group is the average number of carbon atoms. The above-mentioned groups from butyl to behenyl include various isomers such as n-, sec-, tert-, and multi-branched (iso-).
In the component (A), the oxyalkylene group in the polyoxyalkylene alkyl ether phosphate salt is preferably a C2-4, more preferably a C2-3, and still more preferably a C2. Wherein each may be the same or different from each other. Preferably, the oxyethylene group is contained in the whole oxyalkylene group. Among these, it is more preferable that all of the oxyalkylene groups are composed of only oxyethylene groups, or that oxyethylene groups and oxypropylene groups are present in a mixture, and it is further preferable that all of the oxyalkylene groups are composed of only oxyethylene groups. When a plurality of species having different carbon atoms are mixed in the oxyalkylene group, for example, when the oxyethylene group and oxypropylene group are mixed, these may be mixed in a random form or in a block form.
In the component (A), the average molar number m of addition of the polyoxyalkylene in the polyoxyalkylene alkyl ether phosphate salt, RO (AO) in the above-mentioned formula (I) m The plural number of the compounds are independent of each other, and are, for example, 0.25 or more, 0.5 or more, 1 or more, or 2 or more. For example, 30 or less, 20 or less, 10 or less, or 6 or less.
The cation M in the component (a) is not particularly limited, and examples thereof include hydrogen, alkali metals, alkaline earth metals, magnesium, and organic ammonium. Examples of the alkali metal include lithium, sodium, and potassium. Examples of the alkaline earth metal include calcium. Examples of the organic ammonium include those derived from NR 1 R 2 R 3 R 4 The ions shown. Herein, R is 1 ～R 4 Each independently represents an alkyl group or an alkylene or polyoxyalkylene group which may contain a hydrogen atom or a hydroxyl group. Among them, organic amines having an arbitrary alkali metal selected from sodium and potassium, ammonium, and an alkyl group or hydroxyalkyl group having 20 or less, preferably 10 or less, and more preferably 5 or less carbon atoms are preferable.
As the component (a), the following component (A1) can be used.
(A1) The method comprises the following steps Alkyl phosphate ester salt or polyoxyalkylene alkyl ether phosphate ester salt having 6 to 10 carbon atoms in the alkyl group
The fiber treatment agent for nonwoven fabric of the present invention preferably contains the component (A1). The component (A1) can improve the permeability of the fiber required for securing the hydrophilicity, particularly the initial water permeability and the processability. In view of these points and the like, the content of the component (A1) is preferably 10% by mass or more, more preferably 20% by mass or more, further preferably 30% by mass or more, particularly preferably 35% by mass or more, and most preferably 40% by mass or more, relative to the component (a).
Examples of the alkyl phosphate salt in the component (A1) include hexyl phosphate salt, octyl phosphate salt, 2-ethylhexyl phosphate salt, decyl phosphate salt, isodecyl phosphate salt, and the like.
Examples of the polyoxyalkylene alkyl ether phosphate salt in the component (A1) include polyoxyethylene hexyl ether phosphate salts (POE (1) to POE (30)), polyoxyethylene octyl ether phosphate salts (POE (1) to POE (30)), polyoxyethylene 2-ethylhexyl ether phosphate salts (POE (1) to POE (30)), polyoxyethylene decyl ether phosphate salts (POE (1) to POE (30)), and polyoxyethylene isodecyl ether phosphate salts (POE (1) to POE (30)). Note that, numerals in parentheses indicate the number of Polyoxyethylene (POE) units.
As the component (a), the following component (A2) can be used.
(A2) The method comprises the following steps Alkyl phosphate ester or polyoxyalkylene alkyl ether phosphate ester having an alkyl group of 11 or more carbon atoms
The component (A2) can control the hydrophilicity, improve the repeated water permeability, and suppress the transfer. In particular, it is preferable that the component (a) further contains the component (A2) in addition to the component (A1), whereby a fiber treatment agent for nonwoven fabric having an excellent balance among hydrophilicity, repeated water permeability, permeability to fibers, and suppression of transfer can be obtained. In view of these points and the like, the content of the component (A2) is preferably 90% by mass or less, more preferably 80% by mass or less, still more preferably 70% by mass or less, particularly preferably 65% by mass or less, and most preferably 60% by mass or less, relative to the component (a). Further, it is preferably 10% by mass or more, more preferably 15% by mass or more, and further preferably 20% by mass or more.
Examples of the alkyl phosphate salt in the component (A2) include dodecyl phosphate salt (lauryl phosphate salt), tridecyl phosphate salt, isotridecyl phosphate salt, tetradecyl phosphate salt (myristyl phosphate salt), hexadecyl phosphate salt (cetyl phosphate salt), octadecyl phosphate salt (stearyl phosphate salt), and isooctadecyl phosphate salt (isostearyl phosphate salt).
Examples of the polyoxyalkylene alkyl ether phosphate salt in the component (A2) include polyoxyethylene lauryl ether phosphate salt (lauryl ether phosphate salt) (POE (1) to POE (30)), polyoxyethylene tridecyl ether phosphate salt (POE (1) to POE (30)), polyoxyethylene isotridecyl ether phosphate salt (POE (1) to POE (30)), polyoxyethylene tetradecyl ether phosphate salt (myristyl ether phosphate salt) (POE (1) to POE (30)), polyoxyethylene cetyl ether phosphate salt (cetyl ether phosphate salt) (POE (1) to POE (30)), polyoxyethylene stearyl ether phosphate salt (stearyl ether phosphate salt) (POE (1) to POE (30)), and polyoxyethylene isostearyl ether phosphate salt (isostearyl ether phosphate salt) (POE (1) to POE (30)). The numbers in parentheses indicate the number of Polyoxyethylene (POE) units.
The component (B) used in the fiber treatment agent for nonwoven fabric of the present invention is at least one selected from a polyol fatty acid ester, a polyoxyalkylene polyol fatty acid ester and a natural wax having a melting point of 15 ℃ or higher (hereinafter referred to as a wax component).
The component (B) suppresses transfer of the component (A). The melting point of the component (B) is 15 ℃ or higher, preferably 20 ℃ or higher, more preferably 25 ℃ or higher, and further preferably 30 ℃ or higher, in view of suppressing the transfer of the component (a). In addition, considering the permeability to the fiber required for, in particular, hydrophilicity, further securing repeated water permeability, processability, and the like, while suppressing transfer of the component (a), it is preferably 90 ℃ or less, more preferably 80 ℃ or less, further preferably 70 ℃ or less, and particularly preferably 60 ℃ or less. When the component (B1) having a melting point of 60 ℃ or higher, particularly 80 ℃ or higher is used, it is preferably used in combination with the component (B2) having a melting point of less than 60 ℃ in view of improvement of permeability, and the mass ratio (B1/B2) of the component (B1) to the component (B2) is preferably less than 1.
In the component (B), the polyol fatty acid ester and the polyoxyalkylene polyol fatty acid ester may be monoesters, diesters, triesters, or the like. The polyol of the polyol fatty acid ester and the polyoxyalkylene polyol fatty acid ester is a dihydric or higher alcohol, and preferably a trihydric or higher alcohol. Further, a ten-or-less alcohol is preferable, and an eight-or-less alcohol is more preferable. Specific examples thereof include polyglycerols such as glycerin and diglycerin, trimethylolethane, trimethylolpropane, trimethylolbutane, ditrimethylolpropane, pentaerythritol, dipentaerythritol, sorbitan, and erythritol (the sugar alcohol compounds of 125221248812588125881258812512512512523), sugar alcohol compounds such as D-threitol, L-arabitol, ribitol, xylitol, sorbitol, mannitol, galactitol, and rhamnose, monosaccharides such as arabinose, ribose, xylose, glucose, mannose, galactose, fructose, sorbose, rhamnose, fucose, and deoxyribose, disaccharides such as trehalose, sucrose, maltose, cellobiose, gentiobiose, lactose, and melibiose, and trisaccharides such as raffinose, gentiotriose, and melezitose. Although the fatty acids of the polyol fatty acid ester and the polyoxyalkylene polyol fatty acid ester are not particularly limited, the number of carbon atoms of the fatty acid is preferably 8 or more, and more preferably 12 or more, in consideration of the melting point and the like. Further, it is preferably 30 or less, more preferably 22 or less, and further preferably 18 or less. The fatty acid may be either a saturated fatty acid or an unsaturated fatty acid, and among these, a saturated fatty acid is preferable, and a linear saturated fatty acid is more preferable, in view of the improvement of the melting point. Examples of the saturated fatty acid include caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, and behenic acid.
The polyol fatty acid ester may be a naturally-obtained fat or oil or a hydrogenated hardened fat or oil thereof.
In the component (B), the average number of moles of the polyoxyalkylene added in the polyoxyalkylene polyol fatty acid ester is, for example, 100 or less or 80 or less per 1 molar equivalent of the hydroxyl group of the polyol ester. The oxyalkylene group is preferably a C2-4, more preferably a C2 (oxyethylene group) or C3 (oxypropylene group). When a plurality of species having different carbon atoms are mixed in the oxyalkylene group, for example, when an oxyethylene group and an oxypropylene group are mixed, they may be mixed in a random form or in a block form.
Examples of the natural wax in the component (B) include vegetable wax, animal wax, and mineral wax. Examples of the vegetable wax include carnauba wax, candelilla wax, rice wax (12521\\1245212473), wood wax, jojoba oil, etc.. Examples of the animal-based wax include lanolin, ceresin, and spermaceti wax. Examples of mineral waxes include paraffin wax, microcrystalline wax, petrolatum (12506124881252512521\12463. Among them, vegetable waxes are preferable. These may be used alone or in combination of two or more.
In the fiber treatment agent for nonwoven fabric of the present invention, the mass ratio (B)/(a) of the component (B) to the component (a) is preferably less than 1 in view of improving hydrophilicity. In view of suppressing transfer, the amount is preferably 0.1 or more, more preferably 0.2 or more, and still more preferably 0.3 or more.
In view of the effects of the present invention, that is, hydrophilicity, repeated water permeability, and permeability to fibers, and the ability to inhibit transfer, the total amount of the component (a) and the component (B) is preferably 50 mass% or more, more preferably 60 mass%, even more preferably 70 mass% or more, particularly preferably 80 mass% or more, and most preferably 85 mass% or more, based on the solid content of the fiber treatment agent for nonwoven fabrics. Here, the solid content is a ratio of water and volatile components such as a solvent which disappear in the adhesion treatment on the fiber.
The fiber treatment agent for nonwoven fabric of the present invention may further contain a penetrating agent (C) in addition to the component (a) and the component (B) for the purpose of improving the permeability to fibers. Examples of the penetrant (C) include nonionic surfactants such as polyoxyalkylene alkyl ethers, anionic surfactants such as polyoxyalkylene alkyl ether sulfates and sulfosuccinate salts, polyether-modified silicones, and the like. Among these, polyoxyalkylene alkyl ethers, particularly polyoxyalkylene branched alkyl ethers, are preferably used because they are inexpensive and can improve permeability. Since increasing the amount of the penetrant to be blended adversely affects transfer and durable hydrophilicity, the amount of the penetrant to be blended is preferably 20 mass% or less, more preferably 15 mass% or less, and still more preferably 10 mass% or less, relative to the solid content of the fiber treatment agent for nonwoven fabric. These may be used alone or in combination of two or more.
The alkyl moiety in the polyoxyalkylene alkyl ether may be either a straight-chain alkyl group or a branched-chain alkyl group, and is preferably an alkyl group having 8 to 14 carbon atoms, more preferably an alkyl group having 10 to 12 carbon atoms. Examples of the branched alkyl group include an isooctyl group, an isodecyl group, an isododecyl group, an isohexadecyl group (isocetyl group), an isooctadecyl group (isostearyl group), an octyldodecyl group, and a decyltetradecyl group.
The average number of moles of the polyalkylene oxide added in the polyoxyalkylene linear alkyl ether and the polyoxyalkylene branched alkyl ether is preferably 2 to 12, more preferably 4 to 8. The oxyalkylene group is preferably a C2-4, more preferably a C2 (oxyethylene group) or C3 (oxypropylene group). When a plurality of species having different carbon atoms are mixed in the oxyalkylene group, for example, when an oxyethylene group and an oxypropylene group are mixed, these may be mixed in a random form or in a block form.
The fiber treatment agent for nonwoven fabric of the present invention may contain water and a solvent, if necessary, and preferably contains water. The water used in the present invention may be any of pure water, distilled water, purified water, soft water, ion-exchanged water, tap water, and the like. In the production of the fiber treatment agent for nonwoven fabric of the present invention, the proportion of the solid content is preferably 5 to 90% by mass, more preferably 10 to 80% by mass.
The fiber treatment agent for nonwoven fabric of the present invention may contain other components in addition to the above components within a range not impairing the effects of the present invention. Examples of the other components include surfactants, antibacterial agents, antioxidants, preservatives, delustering agents, pigments, rust inhibitors, fragrances, antifoaming agents, perfumes, pH adjusters, viscosity adjusters, and the like. Examples of the surfactant include nonionic surfactants such as polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene fatty acid esters, and fatty acid alkanolamides, anionic surfactants such as α -olefin sulfonates, alkylbenzene sulfonates, alkyl sulfates, polyoxyalkylene alkyl ether sulfates, and sulfosuccinate salts, amphoteric surfactants such as alkyl betaines, alkyl sulfobetaines, and alkylamino fatty acid salts, and cationic surfactants such as alkyl quaternary ammonium salts.
The fiber treatment agent for nonwoven fabric of the present invention has a dynamic surface tension of preferably 55mN/m or less, more preferably 50mN/m or less, when the bubble lifetime measured by the maximum bubble pressure method is 100 milliseconds, with respect to an aqueous solution prepared so that the solid content is 2 mass%. When the dynamic surface tension is within this range, the permeability to the hydrophobic fibers is good, the process passability is not hindered, and the effect of suppressing transfer is suitably exhibited.
The method for producing the fiber treatment agent for nonwoven fabric of the present invention is not particularly limited, and for example, the fiber treatment agent for nonwoven fabric of the present invention can be obtained by mixing the component (a), the component (B) and water, if necessary, the component (C) and other components, and heating (for example, 40 to 100 ℃) at room temperature or if necessary, and mixing them uniformly. The order of blending and the method of blending the components are not particularly limited. The fiber treatment agent for nonwoven fabric of the present invention can be applied to the fibers in the form of an emulsion dispersion, for example, by diluting the fiber treatment agent for nonwoven fabric of the present invention with water as necessary.
Next, a nonwoven fabric using the fiber treatment agent for nonwoven fabric of the present invention will be described.
Examples of the raw material fiber of the nonwoven fabric include polyolefin fibers such as polyethylene and polypropylene, synthetic fibers such as polyester fibers and polyamide fibers, regenerated fibers such as rayon and cuprammonium fibers, natural fibers such as cotton, and mixed fibers and composite fibers using two or more of these fibers.
The cross-sectional form of the fiber includes a circular cross-section, a deformed cross-section, and the like. Examples of the irregular cross section include a star shape, an oval shape, a triangular shape, a quadrangular shape, a pentagonal shape, a multilobal shape, an array shape, a T-shape, and a horseshoe shape.
Examples of the cross-sectional form of the composite fiber include a sheath-core type, a parallel type, an eccentric sheath-core type, a multilayer type, a radial type, and an island-in-sea type. Examples of the conjugate fiber include a polyolefin resin-polyolefin resin such as high-density polyethylene-polypropylene, linear low-density polyethylene-polypropylene, a binary copolymer or a terpolymer of propylene and another α -olefin-polypropylene, linear low-density polyethylene-high-density polyethylene, and low-density polyethylene-high-density polyethylene, a polyolefin resin-polyester resin such as polypropylene-polyethylene terephthalate, high-density polyethylene-polyethylene terephthalate, linear low-density polyethylene-polyethylene terephthalate, and low-density polyethylene-polyethylene terephthalate, a polyester resin-polyester resin such as copolyester-polyethylene terephthalate, a combination of a polyamide resin-polyester resin and a polyolefin resin-polyamide resin, and the like.
The spinning method of the raw material fiber may be a known spinning method, and examples thereof include a melt spinning method, a wet spinning method, and a dry spinning method. The spun fiber may be subjected to a treatment such as drawing or crimping.
In the production process of the nonwoven fabric, a gathered layer (web) of fibers is formed first, and then the fibers are bonded to each other.
Examples of the method for forming the fiber build-up layer include a dry method, a wet method, and a spunbond method. The dry method is a method in which short fibers (for example, 15 to 100 mm) are aligned in a constant direction or irregularly by using a carding machine or an air stream called air-laying to form a gathered layer of fibers. In the wet method, short fibers are dispersed in water and papermaking is performed using a papermaking machine to form a fiber aggregate layer. The spunbond method is a method in which a molten raw resin is melted out from the tip of a nozzle of a spinning machine and spun, and a fiber aggregate layer is formed using continuous long fibers. As a method for directly producing a nonwoven fabric from a step of producing fibers (spinning), a melt blowing method, a flash spinning method, and the like can be mentioned.
Examples of the method for bonding the fibers to each other include thermal bonding, needle punching, hydraulic entangling, and chemical bonding. The thermal bonding method is a method in which a fiber aggregate layer in which low-melting-point thermal bonding fibers are mixed is thermally bonded by passing between hot rolls or contacting with hot air to bond the fibers to each other. The needle punching method is a method in which a fiber-gathered layer is repeatedly pierced by a needle (needle) moving up and down at a high speed, and the fibers are entangled by protrusions engraved on the needle. The hydroentanglement method, which is also called a spunlace method, or a water-jet cloth-making method, involves jetting a high-pressure water stream to a gathered layer of fibers to entangle the fibers. The chemical bonding method is a method in which an emulsion-based adhesive resin is adhered to a gathered layer of fibers by impregnation, spraying, or the like, and then heated and dried to bond intersections of the fibers.
The method for applying the adhesive treatment to the fibers using the fiber treatment agent for nonwoven fabric of the present invention is not particularly limited. The fiber treatment agent for nonwoven fabrics of the present invention can be supplied as a spinning finish, a process oil, or a finishing finish for the purpose of achieving an effect on the final use, for the purpose of smoothing and facilitating the production process. When used as a process oil, the oil composition can impart antistatic properties such as smoothness, durability, thermal stability, and safety to prevent static electricity generation, fiber tearing, and lint generation due to friction with a carding machine or the like. Examples of the step of adhering the fiber treatment agent for nonwoven fabric of the present invention to the fiber include steps such as spinning, stretching, and crimping. As a method of adhesion, as a means for obtaining a target amount of adhesion uniformly and efficiently in accordance with the production process of the fiber and the characteristics thereof, for example, a method of supplying the fiber treatment agent for nonwoven fabric of the present invention to the fiber and drying it by using a means such as roll oiling, dipping, spraying, foam coating, or the like can be cited. Alternatively, the nonwoven fabric having fibers bonded to each other may be subjected to a treatment of adhesion by supplying the fiber treatment agent for nonwoven fabric of the present invention to the nonwoven fabric by means of, for example, oiling, dipping, spraying, foam coating with a roller, and drying.
The amount of the fiber treatment agent for nonwoven fabric of the present invention adhering to the fibers is not particularly limited, and the solid content is preferably 0.05 to 2% by mass, more preferably 0.1 to 1.5% by mass, based on the mass of the fibers, in consideration of the effect of the present invention and the performance as a process oil.
The nonwoven fabric of the present invention is a nonwoven fabric having fibers subjected to an adhesion treatment using the fiber treatment agent for nonwoven fabrics of the present invention. This nonwoven fabric has hydrophilicity, repeated water permeability, and permeability to fibers, and can suppress transfer, and therefore, can be used in various applications requiring performance in these respects. Examples of the fields to which the nonwoven fabric of the present invention can be applied include sanitary materials, medical materials, clothing materials, daily sundry goods, agricultural/civil engineering materials, base materials for tapes, filtration materials, packaging materials, and the like. Among these applications, the present invention is particularly suitable for use in fields where, in addition to imparting hydrophilicity or the like, suppression of transfer of fibrous deposits, which are fiber treatment agents for nonwoven fabrics, is particularly required when articles using nonwoven fabrics are processed, for example, when sanitary products are manufactured by bonding and fixing the nonwoven fabrics to each other by a method such as hot melt bonding or thermal bonding. Examples of such fields include sanitary materials such as disposable diapers, sanitary products, masks, bandages, band-aids, sterilized cloths, and surgical tapes. In particular, the surface material of absorbent articles such as disposable diapers for babies, disposable diapers for nursing care, and sanitary napkins is suitable for use as, for example, a top sheet, and an intermediate sheet disposed between the top sheet and an absorbent material.
[ examples ] A method for producing a compound
The present invention will be described in further detail below with reference to examples, but the present invention is not limited to these examples.
1. Fiber treatment agent for nonwoven fabric and production of nonwoven fabric for evaluation
The fiber treatment agents for nonwoven fabrics of examples and comparative examples were prepared by mixing (parts by mass) the components shown in table 1 and stirring at 80 ℃ for 60 minutes.
In the following evaluations, a nonwoven fabric for polypropylene evaluation was produced by the following method.
The fiber treatment agents for nonwoven fabrics of examples and comparative examples were each added to water at 40 ℃ in an amount of 1 mass% as a solid contentDiluting to obtain a diluted solution. The weight per unit area (basis weight) is 20g/m 2 The polypropylene spunbond nonwoven fabric of (1) was immersed in a diluent and oiled, pressed so that the target amount of oil attached to the nonwoven fabric was 0.6 mass%, and then dried in a dryer at 80 ℃ for 30 minutes to obtain a nonwoven fabric.
The following alkyl phosphate ester salts or derivatives (a), wax component (B), and penetrant (C) shown in table 1 were used. The amounts shown in Table 1 represent the effective fractions.
Alkyl phosphate salts or derivatives (A)
1-1: potassium hexyl phosphate
1-2: 2-ethylhexyl potassium phosphate
1-3: ammonium decyl phosphate
1-4: potassium lauryl phosphate
1-5: POE (2) potassium lauryl ether phosphate
1-6: POE (2) stearyl ether potassium phosphate
Wax component (B)
2-1: sorbitan monostearate (melting point 53 ℃ C.)
2-2: diglycerol laurate (melting point 34 ℃ C.)
2-3: sucrose stearate (melting point 48 ℃ C.)
2-4: polysorbate 65 (melting point 33 ℃ C.)
2-5: POE (50) stearyl ether (melting point 55 ℃ C.)
2-6: carnauba wax (melting point 85 deg.C)
2-7: sorbitan monooleate (liquid)
2-8: oxidized polyethylene wax (melting point 105 ℃ C.)
The melting point of the wax component (B) was measured using a micro melting point measuring device (manufactured by Yanaco machines research institute, inc. (1251699.
Penetrant (C)
3-1: POA (4) branched decyl ether
3-2: POE (7) lauryl ether
3-3: POE (3) sodium lauryl ether sulfate
3-4: dioctyl sodium sulfosuccinate
3-5: polyether-modified silicone
2. Evaluation of
The following evaluation was performed using the fiber treatment agent for nonwoven fabric produced above and the nonwoven fabric for evaluation.
In the following description, the agent is the fiber treatment agent for nonwoven fabric of examples and comparative examples, and the amount of the agent to be attached means the amount of the solid matter (all effective portions) other than the agent water to be attached.
[ hydrophilicity (penetration test) ]
In two cylindrical measuring instruments (inside diameter)
) 4 sheets of the nonwoven fabric (20 g/m in weight per unit area) prepared as described above were sandwiched 2 ) 50cc of physiological saline was injected into the upper cylinder of the measuring instrument. The time taken for the injected physiological saline to permeate the nonwoven fabric for evaluation to reach 30cc was measured, and the initial water permeability was evaluated.
In the evaluation, the permeation time of physiological saline was regarded as ∈ + within 10 seconds, similarly, it was regarded as ∈ + within 30 seconds after exceeding 10 seconds, it was regarded as ≈ within 1 minute after exceeding 30 seconds, it was regarded as Δ within 2 minutes after exceeding 1 minute, and it was regarded as × after exceeding 2 minutes.
[ Water permeability repeatedly (Water droplet method) ]
After the operation of the penetration test was continuously performed 5 times, 4 nonwoven fabrics treated with the reagent immediately after the completion of the test were sandwiched by filter paper, and water was removed by using a roller. The filter paper on the surface side was removed, and a water drop of physiological saline was dropped at 10 positions of the portion of the penetration test using a syringe.
Evaluation was performed by measuring the portion where the water drop entered within 3 seconds, and 8 or more was excellent, 7 or 6 was good, 5 to 2 was Δ, and 1 or less was x.
[ Permeability (Cotton sedimentation method) ]
A2 mass% aqueous solution of the agent to be evaluated (in terms of effective fraction) was prepared, and a nonwoven fabric for evaluation (20 g/m weight per unit area) of polypropylene which had not been subjected to the agent treatment and had been cut into 10cm square pieces was dropped from above the solution and was left to stand 2 ) The time until the nonwoven fabric was entirely penetrated with the aqueous solution was measured.
The time until the nonwoven fabric penetrated the entire bath solution was evaluated, and it was very good within 5 seconds, good within 10 seconds after exceeding 5 seconds, delta within 15 seconds after exceeding 10 seconds, and x after exceeding 15 seconds.
[ dynamic surface tension ]
An aqueous solution of 2 mass% of the reagent to be evaluated (in terms of effective fraction) was prepared, and the measurement was performed by the maximum bubble pressure method using a commercially available dynamic surface tension measuring apparatus (BP-D5 manufactured by synechiae interface science), and the surface tension (mN/m) at a bubble lifetime of 100 milliseconds (msec) was recorded as a measured value.
[ transfer inhibition (Water pressure resistance lowering Rate) ]
The above nonwoven fabric (weight per unit area 20 g/m) 2 ) The nonwoven fabric was superposed on a nonwoven fabric which was similarly 15cm square and was not treated with the reagent, and the resultant was left standing for 30 days while applying a load of 0.49 kPa. After the lapse of the standing period, the nonwoven fabric without being treated with the reagent was taken out as a test piece and subjected to a treatment in accordance with JIS L1092: in method a (low water pressure method) of the water resistance test (hydrostatic pressure method) described in the water resistance test method of 2009 fiber product, the water resistance pressure was measured using a measuring apparatus. When the test piece is attached to the measuring apparatus, the test piece is attached so that the contact surface with the reagent-treated nonwoven fabric is the water contact surface side. In addition, as a control test, before the test, the non-woven fabric without reagent treatment was subjected to water pressure resistance measurement, as a blank value.
In the evaluation, the reduction rate of the water pressure resistance of the test piece was excellent + within 10% of the blank value, excellent within 20% exceeding 10%, good within 30% exceeding 20%, delta within 50% exceeding 30%, and x within 50%.
The evaluation results are shown in table 1.
Claims (4)
1. A fiber treatment agent for nonwoven fabric, wherein,
comprises the following component A and component B,
component A: at least one selected from alkyl phosphate salts and polyoxyalkylene alkyl ether phosphate salts,
component B: at least one selected from the group consisting of polyol fatty acid esters, polyoxyalkylene polyol fatty acid esters and naturally derived waxes having a melting point of 30 to 90 ℃,
the component A comprises the following component A1,
component A1: branched alkyl phosphate ester salts having an alkyl group with 6 to 10 carbon atoms,
the mass ratio B/A of the component B to the component A is less than 1.
2. The fiber treatment agent for nonwoven fabric according to claim 1, wherein,
the component A further comprises the following component A2,
component A2: alkyl phosphate ester salts or polyoxyalkylene alkyl ether phosphate ester salts in which the number of carbon atoms in the alkyl group is 11 or more.
3. The fiber treatment agent for nonwoven fabric according to claim 1 or 2, wherein,
the total amount of the component A and the component B is 60 mass% or more based on the solid content of the fiber treatment agent for nonwoven fabrics.
4. A non-woven fabric, wherein,
the fibers of the nonwoven fabric are subjected to adhesion treatment with the fiber treatment agent for nonwoven fabric according to any one of claims 1 to 3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017136374A JP6291617B1 (en) | 2017-07-12 | 2017-07-12 | Non-woven fabric fiber treatment agent and non-woven fabric using the same |
| JP2017-136374 | 2017-07-12 | ||
| PCT/JP2018/026302 WO2019013277A1 (en) | 2017-07-12 | 2018-07-12 | Fiber treatment agent for non-woven fabrics, and non-woven fabric using same |
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| CN110892108A CN110892108A (en) | 2020-03-17 |
| CN110892108B true CN110892108B (en) | 2022-10-25 |
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| CN201880046916.7A Active CN110892108B (en) | 2017-07-12 | 2018-07-12 | Fiber treatment agent for nonwoven fabric and nonwoven fabric using same |
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| Country | Link |
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| EP (1) | EP3653784A4 (en) |
| JP (1) | JP6291617B1 (en) |
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| JP6837524B2 (en) * | 2019-08-09 | 2021-03-03 | ミヨシ油脂株式会社 | Fiber treatment agent for non-woven fabric |
| CN113373687A (en) * | 2020-02-25 | 2021-09-10 | 三吉油脂株式会社 | Agent for treating artificial silk ear barrel and artificial silk ear barrel using same |
| JP7371316B2 (en) | 2020-03-31 | 2023-10-31 | 大和紡績株式会社 | Nonwoven fabric for absorbent articles and absorbent articles containing the same |
| CN113980723A (en) * | 2021-10-08 | 2022-01-28 | 江苏悦孚油品有限公司 | Antistatic reagent for hot box of elasticizer and preparation method thereof |
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Also Published As
| Publication number | Publication date |
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| EP3653784A1 (en) | 2020-05-20 |
| JP2019019417A (en) | 2019-02-07 |
| WO2019013277A1 (en) | 2019-01-17 |
| JP6291617B1 (en) | 2018-03-14 |
| CN110892108A (en) | 2020-03-17 |
| EP3653784A4 (en) | 2021-03-24 |
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