WO2021029287A1 - Fiber treatment agent for nonwoven cloth - Google Patents

Fiber treatment agent for nonwoven cloth Download PDF

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Publication number
WO2021029287A1
WO2021029287A1 PCT/JP2020/029889 JP2020029889W WO2021029287A1 WO 2021029287 A1 WO2021029287 A1 WO 2021029287A1 JP 2020029889 W JP2020029889 W JP 2020029889W WO 2021029287 A1 WO2021029287 A1 WO 2021029287A1
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Prior art keywords
component
alkyl
ester salt
woven fabric
treatment agent
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PCT/JP2020/029889
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French (fr)
Japanese (ja)
Inventor
新関　恒一
Original Assignee
ミヨシ油脂株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by ミヨシ油脂株式会社 filed Critical ミヨシ油脂株式会社
Priority to CN202080055998.9A priority Critical patent/CN114207210B/en
Publication of WO2021029287A1 publication Critical patent/WO2021029287A1/en

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Classifications

    • 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
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • 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

Definitions

  • the present invention relates to a fiber treatment agent for non-woven fabrics.
  • the treatment agent for producing a non-woven fabric described in Patent Document 1 is obtained by blending (A) an alkyl phosphate ester salt having an alkyl group having 8 to 18 carbon atoms and (B) a polyether-modified silicone in a predetermined weight ratio. , It is said that a non-woven fabric having a uniform composition can be produced.
  • the fiber treatment agent for non-woven fabrics described in Patent Document 2 is at least one selected from (A) alkyl phosphate ester salt and polyoxyalkylene alkyl ether phosphoric acid ester salt, and (B) has a melting point of 15 ° C. or higher. It is characterized by containing at least one selected from a valent alcohol fatty acid ester, a polyoxyalkylene polyhydric alcohol fatty acid ester and a naturally occurring wax.
  • the fiber treatment agent for non-woven fabrics of Patent Document 2 has hydrophilicity (high water permeability) and repeated water permeability (durable hydrophilicity). It is said that it can be given to.
  • Alkyl phosphate esters used for hydrophilization treatment of synthetic fibers have been studied in various ways as in Patent Documents 1 and 2, and alkyl phosphate salts having an alkyl group having 4 to 22 carbon atoms and alkyl phosphate salts having an alkyl group having 4 to 22 carbon atoms and It is widely known that a polyoxyalkylene alkyl ether phosphoric acid ester salt is blended in a fiber treatment agent because it can impart extremely good hydrophilicity to a non-woven fabric.
  • the present invention has been made in view of the above circumstances, and imparts durable hydrophilicity to a non-woven fabric treated with a chemical without impairing the water permeability of the raw yarn or cotton of the non-woven fabric and the non-woven fabric itself processed from these.
  • An object of the present invention is to provide a fiber treatment agent for a non-woven fabric having good handleability.
  • the present inventor is selected from a linear or branched alkyl phosphate ester salt having a specific alkyl group and a polyoxyalkylene linear alkyl ether phosphoric acid ester salt.
  • the present invention has been found that by blending at least one type into a drug in a specific mass ratio, the handling property of the drug is good and the durable hydrophilic performance can be imparted to the chemical-treated non-woven fabric while maintaining the water permeability. Has been completed.
  • the fiber treatment agent for nonwoven fabrics of the present invention contains at least one component (A) selected from a linear or branched alkyl phosphate ester salt and a polyoxyalkylene linear alkyl ether phosphoric acid ester salt.
  • component (A) at least one of the alkyl group of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 16 carbon atoms (a1) and carbon.
  • the mass ratio (a1) / (a2) of the component (a1) and the component (a2) is 1.0 to 3.4.
  • the present invention it is possible to impart durable hydrophilicity to a non-woven fabric treated with a chemical without impairing the water permeability of the raw yarn or cotton of the non-woven fabric and the non-woven fabric itself processed from these, and for a non-woven fabric having good handleability.
  • a fibrous treatment agent is obtained.
  • the fiber treatment agent for non-woven fabrics of the present invention contains at least one component (A) selected from a linear or branched alkyl phosphate ester salt and a polyoxyalkylene linear alkyl ether phosphoric acid ester salt.
  • the component (A) used in the fiber treatment agent for non-woven fabric of the present invention contains a phosphoric acid monoester salt and / or a phosphoric acid diester salt represented by the following formula (I) as a main component, and contains a phosphoric acid monoester salt.
  • the one containing the largest amount is preferable.
  • the component (A) may contain a polyphosphate or the like.
  • Ingredient (A) is typically a mixture of these.
  • R is an alkyl group
  • AO is an oxyalkylene group (A is an alkylene moiety)
  • M is a cation
  • m is the average number of moles of polyoxyalkylene
  • n is an integer of 1 or 2.
  • the component (A) which is a mixture of a phosphoric acid monoester salt, a phosphoric acid diester salt, and the like, is, for example, an alkyl phosphorus obtained by reacting an alkyl alcohol having a corresponding alkyl group or a polyoxyalkylene alkyl ether with anhydrous phosphoric acid. It can be obtained by neutralizing an acid ester or a polyoxyalkylene alkyl ether phosphate ester with an alkali such as potassium hydroxide.
  • the oxyalkylene group in the polyoxyalkylene linear alkyl ether phosphoric acid ester salt preferably has 2 to 4 carbon atoms, more preferably 2 to 3 carbon atoms, and even more preferably 2 carbon atoms. Among them, each may be the same or different from each other. It is preferable that the entire oxyalkylene group contains an oxyethylene group. Among them, those in which all oxyalkylene groups are composed of only oxyethylene groups, those in which oxyethylene groups and oxypropylene groups are mixed are more preferable, and those in which all oxyalkylene groups are composed of only oxyethylene groups are further preferable. .. When a plurality of types 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 randomly or may be mixed in a block shape. You may.
  • the average number of moles of polyoxyalkylene added to the polyoxyalkylene linear alkyl ether phosphoric acid ester salt is independent when there are a plurality of RO (AO) m in the formula (I).
  • RO (AO) m for example, 0.25 or more, 0.5 or more, 1 or more, or 2 or more. Further, for example, it is 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.
  • the alkali metal include lithium, sodium, potassium and the like.
  • the alkaline earth metal include calcium and the like.
  • the organic ammonium include those represented by NR 1 R 2 R 3 R 4 .
  • R 1 to R 4 independently represent a hydrogen atom, an alkyl group, a hydroxyalkyl group, and a polyalkylene glycol group, respectively.
  • examples of the linear or branched alkyl phosphate ester salt include hexyl phosphate ester salt, octyl phosphate ester salt, 2-ethylhexyl phosphate ester salt, decyl phosphate ester salt, and isodecyl phosphate ester salt.
  • Dodecyl phosphate ester salt (lauryl phosphate ester salt), tridecyl phosphate ester salt, isotridecyl phosphate ester salt, tetradecyl phosphate ester salt (myristyl phosphate ester salt), hexadecyl phosphate ester salt (cetyl phosphate ester) Salt), octadecyl phosphate (stearyl phosphate), isooctadecyl phosphate (isostearyl phosphate) and the like can be mentioned.
  • examples of the polyoxyalkylene linear alkyl ether phosphate ester salt include polyoxyethylene hexyl ether phosphate ester salts (POE (1) to POE (30)) and polyoxyethylene octyl ether phosphorus.
  • Acid ester salt (POE (1) to POE (30)), polyoxyethylene decyl ether phosphate ester salt (POE (1) to POE (30)), polyoxyethylene dodecyl ether phosphoric acid ester salt (lauryl ether phosphoric acid) Ester salt) (POE (1) to POE (30)), polyoxyethylene tridecyl ether phosphate ester salt (POE (1) to POE (30)), polyoxyethylene tetradecyl ether phosphate ester salt (myristyl ether) Phosyl acid ester salt) (POE (1) to POE (30)), polyoxyethylene hexadecyl ether phosphoric acid ester salt (cetyl ether phosphoric acid ester salt) (POE (1) to POE (30)), polyoxyethylene Examples thereof include octadecyl ether phosphate ester salt (stearyl ether phosphate ester salt) (POE (1) to POE (30)).
  • the numbers in parentheses indicate the number
  • the method for producing the component (A) in the fiber treatment agent for a non-woven fabric of the present invention is not particularly limited, but is solvent-free with an alkyl alcohol having a corresponding alkyl group and / or a polyoxyalkylene alkyl ether and diphosphorus pentoxide.
  • the desired compound can be easily obtained by a method of neutralizing with an alkaline substance after the reaction according to the above.
  • the amount of phosphoric acid monoester salt produced varies depending on the number of moles of the polyoxyalkylene alkyl ether) / the number of moles of diphosphorus pentoxide]
  • the degree of phosphorylation is preferably 2.0 to 3.0.
  • the degree of phosphorylation is less than 2.0, the amount of inorganic phosphate in the components may increase, which may adversely affect the process passability, and if the degree of phosphorylation exceeds 3.0, unreacted polyoxyalkylene alkyl ether may be produced. It may increase and adversely affect hydrophilicity and antistatic properties.
  • At least one of the alkyl group of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has at least one carbon number as the component (A). It contains 16 components (a1) and 18 components (a2).
  • the alkyl group contains the 16-carbon component (a1) and the 18-carbon component (a2)
  • the hydrophobic alkyl group has a relatively large number of carbon atoms, so that the durable hydrophilicity becomes particularly good. That is, it is possible to obtain a fiber treatment agent for a non-woven fabric that imparts a higher degree of hydrophilicity than before and satisfies the durable hydrophilicity of the non-woven fabric without adding other chemicals.
  • the mass ratio (a1) / (a2) of both components is 1.0 to 3.4 in consideration of good durability hydrophilicity and handling performance. Yes, 3.0 or less is more preferable.
  • the mass ratio (a1) / (a2) of both components is within the above range, it is possible to impart the desired durable hydrophilicity to the non-woven fabric and to realize good handling performance of the drug.
  • alkyl group of the component (a1) and the component (a2) examples include a hexadecyl group (cetyl group) and an octadecyl group (stearyl group) in the case of a phosphoric acid monoester salt.
  • a phosphoric acid diester salt in addition to a hexadecyl group (cetyl group) and an octadecyl group (stearyl group), for example, a butyl group, a hexyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group (lauryl group) , Tridecyl group, tetradecyl group, pentadecyl group, heptadecyl group, nonadecil group, icosyl group, henicosyl group, docosyl group and the like.
  • the component (a1) and the component (a2) may be a mixture of compounds having different alkyl groups from each other.
  • the component (a1) is an alkyl group having 16 carbon atoms
  • the component (a2) is a mixture. It is essential that the molecule contains at least one alkyl group having 18 carbon atoms.
  • branched alkyl group examples include an alkyl group having one or more branched chains, for example, one or two branched chains in the main chain.
  • the form of branching is not particularly limited, and includes branching forms represented by iso, neo, sec, and tert.
  • an isooctyl group such as a 2-ethylhexyl group
  • an isodecyl group such as a 2-propylheptyl group or a 3,6-dimethyloctyl group
  • an isododecyl group such as a 2-butyloctyl group
  • 3,5-dimethylun Examples thereof include an isotridecyl group such as a decyl group, an isosetyl group such as a 2-heptylnonyl group, and an isostearyl group such as a 2-methylheptadecyl group.
  • the branched higher alcohols used as the raw materials for the component (a1) and the component (a2) are alcohols having a branched structure (oxo alcohol) obtained by hydroformylation reaction of olefins and ⁇ -positions obtained by bimolecular condensation by Gerve reaction.
  • Alcohols having a branched structure are commercially available, and it is preferable to use these, and the side chains of any of the branched higher alcohols may be linear or branched.
  • At least one of the alkyl groups in the component (A) is the component (a3) having 10 or less carbon atoms. It is preferable to further contain.
  • the mass ratio (a3) / (a1 + a2) of the component (a3) to the total mass (a1 + a2) of the component (a1) and the component (a2) determines the durable hydrophilicity of the component (a1) and the component (a2).
  • the content is preferably 3.0 or less, more preferably 2.5 or less, and more preferably 2.0 or less. It is particularly preferable to have.
  • the total mass of the components (a1) and (a2) is 10 to 70% by mass in the total alkyl phosphate ester salt in consideration of obtaining the effect of the present invention. It is preferable, 10 to 50% by mass is more preferable, and 10 to 30% by mass is particularly preferable. When the total mass of the components (a1) and (a2) is within the above range, the durable hydrophilicity of the non-woven fabric to which the fiber treatment agent for non-woven fabric is applied becomes good.
  • the fiber treatment agent for a non-woven fabric of the present invention contains water or a solvent for dissolving the component (a1), the component (a2) and the component (a3), and preferably contains water.
  • the water used in the present invention may be pure water, distilled water, purified water, soft water, ion-exchanged water, tap water, or the like.
  • the proportion of the solid content in the fiber treatment agent for a non-woven fabric of the present invention is not particularly limited, but is preferably 5 to 90% by mass, more preferably 10 to 80% by mass.
  • the fiber treatment agent for a non-woven fabric of the present invention may contain other components as long as the effects of the present invention are not impaired.
  • Other ingredients include, for example, surfactants, hydrophilic silicone resins, penetrants, smoothing agents, antibacterial agents, antioxidants, preservatives, matting agents, pigments, rust inhibitors, fragrances, defoamers, etc. Examples include fragrances, pH adjusters, viscosity regulators and the like.
  • surfactant examples include nonionic surfactants such as polyoxyalkylene alkyl ether and polyoxyalkylene alkenyl ether, polyoxyalkylene fatty acid ester, and fatty acid alkanolamide, alpha olefin sulfonate and alkylbenzene sulfonate, and alkyl sulfate.
  • nonionic surfactants such as polyoxyalkylene alkyl ether and polyoxyalkylene alkenyl ether, polyoxyalkylene fatty acid ester, and fatty acid alkanolamide, alpha olefin sulfonate and alkylbenzene sulfonate, and alkyl sulfate.
  • Anionic surfactants such as salts, polyoxyalkylene alkyl ether sulfates, sulfosuccinic acid ester salts, amphoteric surfactants such as alkylbetaine and alkylsulfobetaines, alkylamino fatty acid salts, cations such as alkyl quaternary ammonium salts. Examples include surfactants.
  • the method for producing the fiber treatment agent for non-woven fabric of the present invention is not particularly limited, but for example, the component (a1), the component (a2), the component (a3) and water are blended, and if necessary, other
  • the fiber treatment agent for a non-woven fabric of the present invention can be obtained by blending the above components and heating at room temperature or, if necessary, (for example, 40 to 100 ° C.) to uniformly mix them.
  • the blending order and blending method of each component are not particularly limited.
  • the non-woven fabric fiber treatment agent of the present invention can be applied to fibers as an aqueous solution or an emulsion dispersion by diluting the non-woven fabric fiber treatment agent of the present invention with water, if necessary.
  • raw material fibers for non-woven fabrics for example, polyolefin fibers such as polyethylene and polypropylene, synthetic fibers such as polyester fibers and polyamide fibers, recycled fibers such as rayon and cupra, natural fibers such as cotton, and two or more of these are used. Examples include the mixed fiber and composite fiber used.
  • Examples of the cross-sectional form of the fiber include a circular cross section and a deformed cross section.
  • Examples of the irregular cross section include a star shape, an ellipse shape, a triangle shape, a quadrangle shape, a pentagon shape, a multi-leaf 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 multi-layer type, a radial type, and a sea island type.
  • Examples of the composite fiber include high density polyethylene / polypropylene, linear low density polyethylene / polypropylene, low density polyethylene / polypropylene, a binary copolymer of propylene and another ⁇ -olefin, or a ternary copolymer / polypropylene.
  • Linear low density polyethylene / high density polyethylene polyolefin resin / polyolefin resin such as low density polyethylene / high density polyethylene, polypropylene / polyethylene terephthalate, high density polyethylene / polyethylene terephthalate, linear low density polyethylene / polyethylene terephthalate,
  • polyolefin resin / polyester resin such as low density polyethylene / polyethylene terephthalate
  • polyester resin / polyester resin such as copolymerized polyester / polyethylene terephthalate
  • a polyamide resin / polyester resin a combination of a polyolefin resin / polyamide resin.
  • 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 stretching or crimping.
  • a fiber accumulation layer (web) is formed, and then the fibers are bonded to each other.
  • Examples of the method for forming the fiber accumulation layer include a dry method, a wet method, and a spunbond method.
  • a dry method short fibers (for example, 15 to 100 mm) are arranged in a certain direction or randomly by an air flow called a card machine or an air array to form an integrated layer of fibers.
  • the wet method short fibers are dispersed in water and strained with a paper machine to form an integrated layer of fibers.
  • the spunbond method the molten raw material resin is eluted and spun from the tip of the nozzle of the spinning machine to form an integrated layer of fibers with continuous long fibers.
  • Other methods for producing a non-woven fabric as it is from the fiber-making (spinning) process include a melt blow method and a flash spinning method.
  • Examples of the method for bonding fibers to each other include a thermal bond method, a needle punch method, a water flow entanglement method, a chemical bond method, and the like.
  • a thermal bond method an integrated layer of fibers mixed with low melting point heat-sealed fibers is thermocompression-bonded through between hot rolls, or hot air is applied to bond the fibers to each other.
  • the needle punching method the fiber accumulation layer is repeatedly pierced with a needle (needle) that moves up and down at high speed, and the fibers are entangled by the protrusions carved in the needle.
  • the water flow entanglement method also called spunlace, water punch, or water jet, injects a high-pressure water flow into the fiber accumulation layer to entangle the fibers.
  • an emulsion-based adhesive resin is attached to the fiber accumulation layer by a method such as impregnation or spraying, and the fibers are dried by heating to bond the intersections of the fibers.
  • the method of adhering to fibers using the fiber treatment agent for non-woven fabrics of the present invention is not particularly limited.
  • the fiber treatment agent for a non-woven fabric of the present invention may be supplied as a spinning oil agent for the purpose of facilitating or facilitating the manufacturing process, a process oil agent, or a finishing oil agent for the purpose of the effect for the final use.
  • a process oil When used as a process oil, it suppresses the generation of static electricity due to friction on card machines, fiber tears, pilling, etc., antistatic performance, smoothness, durable hydrophilicity, thermal stability, safety, etc. Performance can also be imparted.
  • Examples of the step of adhering the fiber treatment agent for a non-woven fabric of the present invention to the fiber include steps such as spinning, stretching, and crimping.
  • the non-woven fabric of the present invention can be uniformly and efficiently obtained according to the fiber manufacturing process and its characteristics, for example, by means of refueling with a roller, dipping, spraying, foam coating, or the like.
  • examples thereof include a method of supplying a fiber treatment agent for fiber to the fiber and drying it.
  • the fiber treatment agent for a non-woven fabric of the present invention may be adhered to a non-woven fabric in which fibers are bonded to each other by supplying and drying by means such as lubrication with a roller, dipping, spraying, and foam coating. Good.
  • the fiber treatment agent for non-woven fabrics of the present invention imparts water absorption performance, antistatic performance, etc. to synthetic fibers, and can be used as a process oil or finishing oil for non-woven fabric production, and also has antistatic properties, hydrophilicity, and repeated water permeation into the non-woven fabric. Give sex.
  • the amount of the fiber treatment agent for a non-woven fabric of the present invention adhered to the fiber is not particularly limited, but the solid content is based on the fiber mass in consideration of the effect of the present invention and the performance as a process oil. It is preferably 0.05 to 2% by mass, more preferably 0.1 to 1.5% by mass.
  • the non-woven fabric to which fibers are adhered and treated with the fiber treatment agent for non-woven fabric of the present invention imparts water absorption performance, antistatic performance, etc. to the raw yarn or cotton of the non-woven fabric and the non-woven fabric itself processed by these, and repeats the chemical-treated non-woven fabric. Since the process passability can be improved without impairing the water permeability, it can be used in various applications requiring such performance. Examples of fields in which the non-woven fabric of the present invention can be used include sanitary materials, medical materials, clothing, daily necessities, agricultural / civil engineering materials, tape base materials, filters, packaging materials, and the like.
  • sanitary materials such as paper diapers, sanitary products, masks, bandages, adhesive plasters, disinfectant cloths, surgical tapes, especially absorbent articles such as disposable diapers for infants, disposable diapers for long-term care, and sanitary products such as napkins.
  • sanitary materials such as paper diapers, sanitary products, masks, bandages, adhesive plasters, disinfectant cloths, surgical tapes, especially absorbent articles such as disposable diapers for infants, disposable diapers for long-term care, and sanitary products such as napkins.
  • a surface material for example, a top sheet, an intermediate sheet arranged between the top sheet and an absorbing element, and the like.
  • At least one of the alkyl groups has 18 (a2) carbon atoms, and at least one of the alkyl groups of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphoric acid ester salt has 10 or less carbon atoms (a3).
  • a3 carbon atoms
  • those shown in Tables 1, 2 and 3 were used.
  • the blending amounts shown in Tables 4 and 5 indicate the effective amount.
  • the fibrous treatment agent for non-woven fabric was treated with the blending amounts shown in Tables 4 and 5 except that the type of the non-woven fabric was changed to prepare a test piece. ..
  • At least one of the alkyl groups of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 16 carbon atoms (a1).
  • At least one of the alkyl groups of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 18 carbon atoms (a2).
  • At least one of the alkyl group of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 10 or less carbon atoms (a3).
  • the drug means the fiber treatment agent for non-woven fabrics of Examples and Comparative Examples
  • the adhering amount means the adhering amount of the solid content (total effective amount) other than water of the drug.
  • the handling performance is evaluated by 1) maintaining the fluidity of the compounded product and 2) not causing product separation, and 1) and 2) when the concentration of the compounded phosphoric acid ester aqueous solution is 50%.
  • Those that are compatible are ⁇ +, those that are compatible at a concentration of 30% are ⁇ , those that are slightly inferior in fluidity at a concentration of 30%, but do not cause product separation, and those that are at a level that does not cause any problems as a product are ⁇ , concentration When the concentration was 30%, product separation did not occur, but the fluidity was considerably inferior, and when the concentration was 30%, the fluidity was considerably inferior, and the product separation occurred was evaluated as x.
  • Presence or absence of fly occurrence (2) Presence or absence of NEP (3) Presence or absence of scum (4) Presence or absence of wrapping around the cylinder (5)
  • Web poor formation evaluation is ⁇ + if items (1) to (5) do not occur at all, ⁇ if one minor defect occurs, ⁇ if two minor defects occur, When three or more minor defects occurred, the value was ⁇ , and when any of the severe defects occurred, the value was x.
  • Specimens were prepared in the same manner as PET / PE short fibers and air-through non-woven fabric except that the non-woven fabric was changed to PP spunbonded non-woven fabric, and based on the evaluation method as described above, [Liquid flow rate (strike-through test)] and [Durable hydrophilicity] was tested.

Abstract

A fiber treatment agent for nonwoven cloth, wherein: the fiber treatment agent contains at least one component (A) selected from a straight-chain or branching alkyl phosphate ester salt, and a polyoxyalkylene straight-chain alkyl ether phosphate ester salt; in the component (A), the alkyl group of the alkyl phosphate ester salt and/or the alkyl group of the polyoxyalkylene straight-chain alkyl ether phosphate ester salt includes a component (a1) having a carbon number of 16, and a component (a2) having a carbon number of 18; and the mass ratio (a1)/(a2) of the component (a1) and the component (a2) is 1.0-3.4.

Description

不織布用繊維処理剤Fiber treatment agent for non-woven fabric
　本発明は、不織布用繊維処理剤に関する。 The present invention relates to a fiber treatment agent for non-woven fabrics.
　従来、衛生材料向け不織布等の分野において、合成繊維に親水性を付与するために種々のアルキルリン酸エステル塩や、親水性シリコーン誘導体、非イオン界面活性剤等を配合した薬剤を用いる手法が提案されており、これまでに発明者も様々な不織布用繊維処理剤を提案している（例えば、特許文献１及び２参照）。 Conventionally, in the field of non-woven fabrics for sanitary materials, a method using a chemical containing various alkyl phosphate ester salts, hydrophilic silicone derivatives, nonionic surfactants, etc. has been proposed in order to impart hydrophilicity to synthetic fibers. So far, the inventor has also proposed various fiber treatment agents for non-woven fabrics (see, for example, Patent Documents 1 and 2).
　特許文献１に記載の不織布製造用処理剤は、（Ａ）炭素数８～１８のアルキル基を有するアルキルリン酸エステル塩と（Ｂ）ポリエーテル変性シリコーンとを所定の重量比で配合することにより、均一な組成を有する不織布を製造できるとされている。 The treatment agent for producing a non-woven fabric described in Patent Document 1 is obtained by blending (A) an alkyl phosphate ester salt having an alkyl group having 8 to 18 carbon atoms and (B) a polyether-modified silicone in a predetermined weight ratio. , It is said that a non-woven fabric having a uniform composition can be produced.
　特許文献２に記載の不織布用繊維処理剤は、（Ａ）アルキルリン酸エステル塩およびポリオキシアルキレンアルキルエーテルリン酸エステル塩から選ばれる少なくとも１種、（Ｂ）融点が１５℃以上である、多価アルコール脂肪酸エステル、ポリオキシアルキレン多価アルコール脂肪酸エステルおよび天然由来ワックスから選ばれる少なくとも１種を含有することを特徴としている。これら（Ａ）成分と（Ｂ）成分とを含有していることにより、特許文献２の不織布用繊維処理剤は、親水性（透水速度の高さ）と繰り返し透水性（耐久親水性）を不織布に付与することができるとされている。 The fiber treatment agent for non-woven fabrics described in Patent Document 2 is at least one selected from (A) alkyl phosphate ester salt and polyoxyalkylene alkyl ether phosphoric acid ester salt, and (B) has a melting point of 15 ° C. or higher. It is characterized by containing at least one selected from a valent alcohol fatty acid ester, a polyoxyalkylene polyhydric alcohol fatty acid ester and a naturally occurring wax. By containing these components (A) and (B), the fiber treatment agent for non-woven fabrics of Patent Document 2 has hydrophilicity (high water permeability) and repeated water permeability (durable hydrophilicity). It is said that it can be given to.
　合成繊維の親水化処理に用いられるアルキルリン酸エステル塩は、特許文献１及び２のように以前より様々な検討がなされており、炭素数４～２２のアルキル基を有するアルキルリン酸エステル塩およびポリオキシアルキレンアルキルエーテルリン酸エステル塩は、不織布に極めて良好な親水性を付与することができるため、繊維処理剤へ配合することは広く知られている。 Alkyl phosphate esters used for hydrophilization treatment of synthetic fibers have been studied in various ways as in Patent Documents 1 and 2, and alkyl phosphate salts having an alkyl group having 4 to 22 carbon atoms and alkyl phosphate salts having an alkyl group having 4 to 22 carbon atoms and It is widely known that a polyoxyalkylene alkyl ether phosphoric acid ester salt is blended in a fiber treatment agent because it can impart extremely good hydrophilicity to a non-woven fabric.
特開平０４－８２９６１号公報Japanese Unexamined Patent Publication No. 04-82961 特開２０１９－０１９４１７号公報Japanese Unexamined Patent Publication No. 2019-019417
　しかしながら、耐久親水性の向上を目的として、アルキル鎖の比較的長いアルキルリン酸エステル塩を適用すると、薬剤のハンドリング性が低下することが知られており、親水化剤の耐久親水性付与とハンドリング性との両立が課題であった。 However, it is known that the handling property of a drug is lowered when an alkyl phosphate ester salt having a relatively long alkyl chain is applied for the purpose of improving durable hydrophilicity, and it is known that the hydrophilicity agent imparts durable hydrophilicity and is handled. Balancing with sex was an issue.
　上記の特許文献１、２の不織布用繊維処理剤においても、不織布の耐久親水性について改善の余地が残されていた。また、従来のアルキルリン酸エステル塩を主基剤とする不織布用繊維処理剤においては、薬剤の高濃度化が容易では無く、薬剤自体が高粘度になったり、経時での分離を伴ったりするため、薬剤のハンドリング性能に改善の余地が残されていた。 Even in the above-mentioned fiber treatment agents for non-woven fabrics of Patent Documents 1 and 2, there is room for improvement in the durability and hydrophilicity of the non-woven fabric. Further, in the conventional fiber treatment agent for non-woven fabrics using an alkyl phosphate ester salt as a main base, it is not easy to increase the concentration of the drug, and the drug itself becomes highly viscous or separates with time. Therefore, there was room for improvement in the handling performance of the drug.
　本発明は、以上のような事情に鑑みてなされたものであり、不織布の原糸もしくは原綿、これらを加工した不織布自身の透水性能を損なうことなく、薬剤処理した不織布に耐久親水性を付与し、ハンドリング性が良好な不織布用繊維処理剤を提供することを課題としている。 The present invention has been made in view of the above circumstances, and imparts durable hydrophilicity to a non-woven fabric treated with a chemical without impairing the water permeability of the raw yarn or cotton of the non-woven fabric and the non-woven fabric itself processed from these. An object of the present invention is to provide a fiber treatment agent for a non-woven fabric having good handleability.
　本発明者は上記課題を解決するために鋭意検討した結果、アルキル基が特定の炭素数である直鎖または分岐のアルキルリン酸エステル塩およびポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩から選ばれる少なくとも１種を、特定の質量比で薬剤中に配合することにより、薬剤のハンドリング性が良好であり、かつ透水性能を保持しつつ薬剤処理した不織布に耐久親水性能を付与できることを見出し、本発明を完成するに至った。 As a result of diligent studies to solve the above problems, the present inventor is selected from a linear or branched alkyl phosphate ester salt having a specific alkyl group and a polyoxyalkylene linear alkyl ether phosphoric acid ester salt. The present invention has been found that by blending at least one type into a drug in a specific mass ratio, the handling property of the drug is good and the durable hydrophilic performance can be imparted to the chemical-treated non-woven fabric while maintaining the water permeability. Has been completed.
　すなわち本発明の不織布用繊維処理剤は、直鎖または分岐のアルキルリン酸エステル塩、および、ポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩から選ばれる少なくとも１種の成分（Ａ）を含有し、
　前記成分（Ａ）には、前記アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１６である成分（ａ１）および炭素数１８である成分（ａ２）を含み、
　前記成分（ａ１）および成分（ａ２）の質量比（ａ１）／（ａ２）が１．０～３．４である。 That is, the fiber treatment agent for nonwoven fabrics of the present invention contains at least one component (A) selected from a linear or branched alkyl phosphate ester salt and a polyoxyalkylene linear alkyl ether phosphoric acid ester salt.
In the component (A), at least one of the alkyl group of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 16 carbon atoms (a1) and carbon. Contains the component (a2) of number 18
The mass ratio (a1) / (a2) of the component (a1) and the component (a2) is 1.0 to 3.4.
　本発明によれば、不織布の原糸もしくは原綿、これらを加工した不織布自身の透水性能を損なうことなく、薬剤処理した不織布に耐久親水性を付与することができ、しかもハンドリング性が良好な不織布用繊維処理剤が得られる。 According to the present invention, it is possible to impart durable hydrophilicity to a non-woven fabric treated with a chemical without impairing the water permeability of the raw yarn or cotton of the non-woven fabric and the non-woven fabric itself processed from these, and for a non-woven fabric having good handleability. A fibrous treatment agent is obtained.
　以下に、本発明を詳細に説明する。 The present invention will be described in detail below.
　本発明の不織布用繊維処理剤は、直鎖または分岐のアルキルリン酸エステル塩およびポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩から選ばれる少なくとも１種の成分（Ａ）を含有している。 The fiber treatment agent for non-woven fabrics of the present invention contains at least one component (A) selected from a linear or branched alkyl phosphate ester salt and a polyoxyalkylene linear alkyl ether phosphoric acid ester salt.
　本発明の不織布用繊維処理剤に使用される成分（Ａ）は、次式（Ｉ）で表されるリン酸モノエステル塩および／またはリン酸ジエステル塩を主成分とし、リン酸モノエステル塩を最も多く含むものが好ましい。成分（Ａ）は、これらの他、ポリリン酸塩等を含んでもよい。成分（Ａ）は、典型的にはこれらの混合物である。 The component (A) used in the fiber treatment agent for non-woven fabric of the present invention contains a phosphoric acid monoester salt and / or a phosphoric acid diester salt represented by the following formula (I) as a main component, and contains a phosphoric acid monoester salt. The one containing the largest amount is preferable. In addition to these, the component (A) may contain a polyphosphate or the like. Ingredient (A) is typically a mixture of these.
Figure JPOXMLDOC01-appb-C000001
 （上記式中、Ｒはアルキル基、ＡＯはオキシアルキレン基（Ａはアルキレン部位）を示し、Ｍはカチオンを示し、ｍはポリオキシアルキレンの平均付加モル数、ｎは１または２の整数を示す。各式中におけるＲおよびＭが複数の場合、その各々は同一でも互いに異なっていてもよい。ＡＯは、各々が同一であっても互いに異なっていてもよい。）
Figure JPOXMLDOC01-appb-C000001
 (In the above formula, R is an alkyl group, AO is an oxyalkylene group (A is an alkylene moiety), M is a cation, m is the average number of moles of polyoxyalkylene, and n is an integer of 1 or 2. When there are a plurality of Rs and Ms in each equation, each of them may be the same or different from each other. AOs may be the same or different from each other.)
　リン酸モノエステル塩、リン酸ジエステル塩等の混合物である成分（Ａ）は、例えば、対応するアルキル基を有するアルキルアルコールやポリオキシアルキレンアルキルエーテルと無水リン酸を反応させることにより得られるアルキルリン酸エステルやポリオキシアルキレンアルキルエーテルリン酸エステルを、水酸化カリウム等のアルカリで中和することにより得ることができる。 The component (A), which is a mixture of a phosphoric acid monoester salt, a phosphoric acid diester salt, and the like, is, for example, an alkyl phosphorus obtained by reacting an alkyl alcohol having a corresponding alkyl group or a polyoxyalkylene alkyl ether with anhydrous phosphoric acid. It can be obtained by neutralizing an acid ester or a polyoxyalkylene alkyl ether phosphate ester with an alkali such as potassium hydroxide.
　成分（Ａ）のうち、ポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩におけるオキシアルキレン基は、炭素数２～４が好ましく、炭素数２～３がより好ましく、炭素数２が更に好ましい。その中でも、各々が同一であっても互いに異なっていてもよい。オキシアルキレン基の全体において、オキシエチレン基を含んでいることが好ましい。その中でも、全てのオキシアルキレン基がオキシエチレン基のみからなるもの、オキシエチレン基とオキシプロピレン基が混在しているものがより好ましく、全てのオキシアルキレン基がオキシエチレン基のみからなるものが更に好ましい。オキシアルキレン基に炭素数の異なる複数種が混在している場合、例えばオキシエチレン基とオキシプロピレン基が混在している場合、これらはランダム状に混在していてもよく、ブロック状に混在していてもよい。 Among the component (A), the oxyalkylene group in the polyoxyalkylene linear alkyl ether phosphoric acid ester salt preferably has 2 to 4 carbon atoms, more preferably 2 to 3 carbon atoms, and even more preferably 2 carbon atoms. Among them, each may be the same or different from each other. It is preferable that the entire oxyalkylene group contains an oxyethylene group. Among them, those in which all oxyalkylene groups are composed of only oxyethylene groups, those in which oxyethylene groups and oxypropylene groups are mixed are more preferable, and those in which all oxyalkylene groups are composed of only oxyethylene groups are further preferable. .. When a plurality of types 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 randomly or may be mixed in a block shape. You may.
　成分（Ａ）のうち、ポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩におけるポリオキシアルキレンの平均付加モル数ｍは、前記式（Ｉ）中におけるＲＯ（ＡＯ）ｍが複数の場合はそれぞれ独立に、例えば０．２５以上、０．５以上、１以上、または２以上である。また、例えば３０以下、２０以下、１０以下、または６以下である。 Among the components (A), the average number of moles of polyoxyalkylene added to the polyoxyalkylene linear alkyl ether phosphoric acid ester salt is independent when there are a plurality of RO (AO) m in the formula (I). For example, 0.25 or more, 0.5 or more, 1 or more, or 2 or more. Further, for example, it is 30 or less, 20 or less, 10 or less, or 6 or less.
　成分（Ａ）におけるカチオンＭとしては、特に限定されるものではないが、例えば、水素、アルカリ金属、アルカリ土類金属、マグネシウム、有機アンモニウム等が挙げられる。アルカリ金属としては、例えば、リチウム、ナトリウム、カリウム等が挙げられる。アルカリ土類金属としては、例えば、カルシウム等が挙げられる。有機アンモニウムとしては、例えば、ＮＲ１Ｒ２Ｒ３Ｒ４で表されるものが挙げられる。ここでＲ１～Ｒ４はそれぞれ独立に、水素原子、アルキル基、ヒドロキシアルキル基、ポリアルキレングリコール基を示す。これらの中でも、ナトリウムおよびカリウムから選ばれるいずれかのアルカリ金属、アンモニウム、炭素数２０以下、好ましくは１０以下、より好ましくは５以下のアルキル基もしくはヒドロキシアルキル基を有する有機アンモニウムが好ましい。 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, potassium and the like. Examples of the alkaline earth metal include calcium and the like. Examples of the organic ammonium include those represented by NR 1 R 2 R 3 R 4 . Here, R 1 to R 4 independently represent a hydrogen atom, an alkyl group, a hydroxyalkyl group, and a polyalkylene glycol group, respectively. Among these, any alkali metal selected from sodium and potassium, ammonium, and organic ammonium having an alkyl group or hydroxyalkyl group having 20 or less carbon atoms, preferably 10 or less, and more preferably 5 or less carbon atoms are preferable.
　成分（Ａ）のうち、直鎖または分岐のアルキルリン酸エステル塩としては、例えば、ヘキシルリン酸エステル塩、オクチルリン酸エステル塩、２－エチルヘキシルリン酸エステル塩、デシルリン酸エステル塩、イソデシルリン酸エステル塩、ドデシルリン酸エステル塩（ラウリルリン酸エステル塩）、トリデシルリン酸エステル塩、イソトリデシルリン酸エステル塩、テトラデシルリン酸エステル塩（ミリスチルリン酸エステル塩）、ヘキサデシルリン酸エステル塩（セチルリン酸エステル塩）、オクタデシルリン酸エステル塩（ステアリルリン酸エステル塩）、イソオクタデシルリン酸エステル塩（イソステアリルリン酸エステル塩）等が挙げられる。 Among the component (A), examples of the linear or branched alkyl phosphate ester salt include hexyl phosphate ester salt, octyl phosphate ester salt, 2-ethylhexyl phosphate ester salt, decyl phosphate ester salt, and isodecyl phosphate ester salt. , Dodecyl phosphate ester salt (lauryl phosphate ester salt), tridecyl phosphate ester salt, isotridecyl phosphate ester salt, tetradecyl phosphate ester salt (myristyl phosphate ester salt), hexadecyl phosphate ester salt (cetyl phosphate ester) Salt), octadecyl phosphate (stearyl phosphate), isooctadecyl phosphate (isostearyl phosphate) and the like can be mentioned.
　成分（Ａ）のうち、ポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩としては、例えば、ポリオキシエチレンヘキシルエーテルリン酸エステル塩（ＰＯＥ（１）～ＰＯＥ（３０））、ポリオキシエチレンオクチルエーテルリン酸エステル塩（ＰＯＥ（１）～ＰＯＥ（３０））、ポリオキシエチレンデシルエーテルリン酸エステル塩（ＰＯＥ（１）～ＰＯＥ（３０））、ポリオキシエチレンドデシルエーテルリン酸エステル塩（ラウリルエーテルリン酸エステル塩）（ＰＯＥ（１）～ＰＯＥ（３０））、ポリオキシエチレントリデシルエーテルリン酸エステル塩（ＰＯＥ（１）～ＰＯＥ（３０））、ポリオキシエチレンテトラデシルエーテルリン酸エステル塩（ミリスチルエーテルリン酸エステル塩）（ＰＯＥ（１）～ＰＯＥ（３０））、ポリオキシエチレンヘキサデシルエーテルリン酸エステル塩（セチルエーテルリン酸エステル塩）（ＰＯＥ（１）～ＰＯＥ（３０））、ポリオキシエチレンオクタデシルエーテルリン酸エステル塩（ステアリルエーテルリン酸エステル塩）（ＰＯＥ（１）～ＰＯＥ（３０））等が挙げられる。なお、括弧内の数字は、ポリオキシエチレン（ＰＯＥ）単位の数を示す。 Among the components (A), examples of the polyoxyalkylene linear alkyl ether phosphate ester salt include polyoxyethylene hexyl ether phosphate ester salts (POE (1) to POE (30)) and polyoxyethylene octyl ether phosphorus. Acid ester salt (POE (1) to POE (30)), polyoxyethylene decyl ether phosphate ester salt (POE (1) to POE (30)), polyoxyethylene dodecyl ether phosphoric acid ester salt (lauryl ether phosphoric acid) Ester salt) (POE (1) to POE (30)), polyoxyethylene tridecyl ether phosphate ester salt (POE (1) to POE (30)), polyoxyethylene tetradecyl ether phosphate ester salt (myristyl ether) Phosyl acid ester salt) (POE (1) to POE (30)), polyoxyethylene hexadecyl ether phosphoric acid ester salt (cetyl ether phosphoric acid ester salt) (POE (1) to POE (30)), polyoxyethylene Examples thereof include octadecyl ether phosphate ester salt (stearyl ether phosphate ester salt) (POE (1) to POE (30)). The numbers in parentheses indicate the number of polyoxyethylene (POE) units.
　本発明の不織布用繊維処理剤における成分（Ａ）の製造方法は特に限定されるものではないが、対応するアルキル基を有するアルキルアルコールおよび／またはポリオキシアルキレンアルキルエーテルと五酸化二リンの無溶媒による反応後にアルカリ物質で中和する方法により簡便に目的の化合物を得ることができる。この方法を用いる場合、対応するアルキル基を有するアルキルアルコールおよび／またはポリオキシアルキレンアルキルエーテルと五酸化二リンとの反応モル比［（リン酸化度）＝（対応するアルキル基を有するアルキルアルコールおよび／またはポリオキシアルキレンアルキルエーテルのモル数）／五酸化二リンのモル数］によりリン酸モノエステル塩の生成量が変化するが、経験的にリン酸化度は２．０～３．０が好ましい。リン酸化度が２．０未満となると成分中に無機リン酸塩が多くなり工程通過性に悪影響を及ぼす虞があり、リン酸化度が３．０を超えると未反応のポリオキシアルキレンアルキルエーテルが増加して親水性や帯電防止性に悪影響を及ぼす虞がある。 The method for producing the component (A) in the fiber treatment agent for a non-woven fabric of the present invention is not particularly limited, but is solvent-free with an alkyl alcohol having a corresponding alkyl group and / or a polyoxyalkylene alkyl ether and diphosphorus pentoxide. The desired compound can be easily obtained by a method of neutralizing with an alkaline substance after the reaction according to the above. When this method is used, the reaction molar ratio of the alkyl alcohol having the corresponding alkyl group and / or the polyoxyalkylene alkyl ether to diphosphorus pentoxide [(degree of phosphoric acid) = (alkyl alcohol having the corresponding alkyl group and / / Alternatively, the amount of phosphoric acid monoester salt produced varies depending on the number of moles of the polyoxyalkylene alkyl ether) / the number of moles of diphosphorus pentoxide], but empirically, the degree of phosphorylation is preferably 2.0 to 3.0. If the degree of phosphorylation is less than 2.0, the amount of inorganic phosphate in the components may increase, which may adversely affect the process passability, and if the degree of phosphorylation exceeds 3.0, unreacted polyoxyalkylene alkyl ether may be produced. It may increase and adversely affect hydrophilicity and antistatic properties.
　また、本発明の不織布用繊維処理剤は、成分（Ａ）として、アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１６成分（ａ１）および１８成分（ａ２）を含有している。アルキル基の炭素数１６成分（ａ１）および１８成分（ａ２）を含有すると、疎水性であるアルキル基の炭素数が比較的大きいため、特に耐久親水性がより良好となる。すなわち、従来より高度な親水性能を付与するとともに、他の薬剤を添加することなく不織布の耐久親水性を満足する不織布用繊維処理剤が得られる。 Further, in the fiber treatment agent for non-woven fabrics of the present invention, at least one of the alkyl group of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has at least one carbon number as the component (A). It contains 16 components (a1) and 18 components (a2). When the alkyl group contains the 16-carbon component (a1) and the 18-carbon component (a2), the hydrophobic alkyl group has a relatively large number of carbon atoms, so that the durable hydrophilicity becomes particularly good. That is, it is possible to obtain a fiber treatment agent for a non-woven fabric that imparts a higher degree of hydrophilicity than before and satisfies the durable hydrophilicity of the non-woven fabric without adding other chemicals.
　前記成分（ａ１）および成分（ａ２）について、両成分の質量比（ａ１）／（ａ２）は、耐久親水性およびハンドリング性能が良好となる点等を考慮すると、１．０～３．４であり、３．０以下がより好ましい。両成分の質量比（ａ１）／（ａ２）が上記の範囲内であれば、不織布に所期の耐久親水性を付与できると共に、薬剤の良好なハンドリング性能の実現を両立することができる。 Regarding the component (a1) and the component (a2), the mass ratio (a1) / (a2) of both components is 1.0 to 3.4 in consideration of good durability hydrophilicity and handling performance. Yes, 3.0 or less is more preferable. When the mass ratio (a1) / (a2) of both components is within the above range, it is possible to impart the desired durable hydrophilicity to the non-woven fabric and to realize good handling performance of the drug.
　成分（ａ１）および成分（ａ２）のアルキル基としては、リン酸モノエステル塩であれば、ヘキサデシル基（セチル基）とオクタデシル基（ステアリル基）が挙げられる。リン酸ジエステル塩であれば、ヘキサデシル基（セチル基）とオクタデシル基（ステアリル基）のほかに例えば、ブチル基、ヘキシル基、オクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基（ラウリル基）、トリデシル基、テトラデシル基、ペンタデシル基、ヘプタデシル基、ノナデシル基、イコシル基、へンイコシル基、ドコシル基等が挙げられる。成分（ａ１）および成分（ａ２）は、互いに異なるアルキル基を有する化合物の混合物であってもよく、この場合、成分（ａ１）であれば炭素数１６のアルキル基、成分（ａ２）であれば炭素数１８のアルキル基を分子中に少なくとも一つ含むことを必須とする。 Examples of the alkyl group of the component (a1) and the component (a2) include a hexadecyl group (cetyl group) and an octadecyl group (stearyl group) in the case of a phosphoric acid monoester salt. In the case of a phosphoric acid diester salt, in addition to a hexadecyl group (cetyl group) and an octadecyl group (stearyl group), for example, a butyl group, a hexyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group (lauryl group) , Tridecyl group, tetradecyl group, pentadecyl group, heptadecyl group, nonadecil group, icosyl group, henicosyl group, docosyl group and the like. The component (a1) and the component (a2) may be a mixture of compounds having different alkyl groups from each other. In this case, the component (a1) is an alkyl group having 16 carbon atoms, and the component (a2) is a mixture. It is essential that the molecule contains at least one alkyl group having 18 carbon atoms.
　分岐アルキル基としては、例えば、主鎖に１つまたは複数、例えば１～２個の分岐鎖を有するアルキル基が挙げられる。分岐の形態としては、特に限定されず、ｉｓｏ、ｎｅｏ、ｓｅｃ、ｔｅｒｔで表記される分岐形態を含む。具体的には、例えば、２－エチルヘキシル基等のイソオクチル基、２－プロピルヘプチル基や３，６－ジメチルオクチル基等のイソデシル基、２－ブチルオクチル基等のイソドデシル基、３，５－ジメチルウンデシル基等のイソトリデシル基、２－ヘプチルノニル基等のイソセチル基、２－メチルヘプタデシル基等のイソステアリル基等が挙げられる。成分（ａ１）および成分（ａ２）の原料となる分岐高級アルコールはオレフィンのヒドロホルミル化反応により得られる分岐構造を有するアルコール（オキソアルコール）や、ゲルベ反応による２分子縮合で得られた、β位に分岐構造を有するアルコール（ゲルベアルコール）が市販されており、これらを用いることが好ましく、いずれの分岐高級アルコールも側鎖は直鎖状であっても分岐状であってもよい。 Examples of the branched alkyl group include an alkyl group having one or more branched chains, for example, one or two branched chains in the main chain. The form of branching is not particularly limited, and includes branching forms represented by iso, neo, sec, and tert. Specifically, for example, an isooctyl group such as a 2-ethylhexyl group, an isodecyl group such as a 2-propylheptyl group or a 3,6-dimethyloctyl group, an isododecyl group such as a 2-butyloctyl group, and 3,5-dimethylun Examples thereof include an isotridecyl group such as a decyl group, an isosetyl group such as a 2-heptylnonyl group, and an isostearyl group such as a 2-methylheptadecyl group. The branched higher alcohols used as the raw materials for the component (a1) and the component (a2) are alcohols having a branched structure (oxo alcohol) obtained by hydroformylation reaction of olefins and β-positions obtained by bimolecular condensation by Gerve reaction. Alcohols having a branched structure (gelve alcohol) are commercially available, and it is preferable to use these, and the side chains of any of the branched higher alcohols may be linear or branched.
　また、本発明の不織布用繊維処理剤では、前記成分（ａ１）および成分（ａ２）に加えて、成分（Ａ）のうち、アルキル基のうち少なくとも一つが炭素数１０以下である成分（ａ３）をさらに含有することが好ましい。前記成分（ａ１）と前記成分（ａ２）の質量の合計（ａ１＋ａ２）に対する前記成分（ａ３）の質量比（ａ３）／（ａ１＋ａ２）は、成分（ａ１）および成分（ａ２）による耐久親水性を保持しつつ成分（ａ３）により浸透性やカード透過性が良好となる点等を考慮すると、３．０以下であることが好ましく、２．５以下であることがより好ましく、２．０以下であることが特に好ましい。（ａ３）／（ａ１＋ａ２）の値が、上記の範囲内であれば、不織布用繊維処理剤を付与した不織布の耐久親水性が良好となる。 Further, in the fiber treatment agent for nonwoven fabrics of the present invention, in addition to the above-mentioned component (a1) and component (a2), at least one of the alkyl groups in the component (A) is the component (a3) having 10 or less carbon atoms. It is preferable to further contain. The mass ratio (a3) / (a1 + a2) of the component (a3) to the total mass (a1 + a2) of the component (a1) and the component (a2) determines the durable hydrophilicity of the component (a1) and the component (a2). Considering that the permeability and card permeability are improved by the component (a3) while retaining, the content is preferably 3.0 or less, more preferably 2.5 or less, and more preferably 2.0 or less. It is particularly preferable to have. When the value of (a3) / (a1 + a2) is within the above range, the durable hydrophilicity of the non-woven fabric to which the fiber treatment agent for non-woven fabric is applied becomes good.
　本発明の不織布用繊維処理剤において、成分（ａ１）および（ａ２）の質量の合計は、本発明の効果を得る点を考慮すると、全アルキルリン酸エステル塩中の１０～７０質量％であることが好ましく、１０～５０質量％がより好ましく、１０～３０質量％が特に好ましい。成分（ａ１）および（ａ２）の質量の合計量が上記の範囲内であれば、不織布用繊維処理剤を付与した不織布の耐久親水性が良好となる。 In the fiber treatment agent for nonwoven fabrics of the present invention, the total mass of the components (a1) and (a2) is 10 to 70% by mass in the total alkyl phosphate ester salt in consideration of obtaining the effect of the present invention. It is preferable, 10 to 50% by mass is more preferable, and 10 to 30% by mass is particularly preferable. When the total mass of the components (a1) and (a2) is within the above range, the durable hydrophilicity of the non-woven fabric to which the fiber treatment agent for non-woven fabric is applied becomes good.
　本発明の不織布用繊維処理剤は、成分（ａ１）、成分（ａ２）および成分（ａ３）を溶解するための水や溶剤を含有し、その中でも水を含有することが好ましい。本発明に使用する水としては、純水、蒸留水、精製水、軟水、イオン交換水、水道水等のいずれであってもよい。本発明の不織布用繊維処理剤における固形分の割合は、特に限定されないが、５～９０質量％が好ましく、１０～８０質量％がより好ましい。 The fiber treatment agent for a non-woven fabric of the present invention contains water or a solvent for dissolving the component (a1), the component (a2) and the component (a3), and preferably contains water. The water used in the present invention may be pure water, distilled water, purified water, soft water, ion-exchanged water, tap water, or the like. The proportion of the solid content in the fiber treatment agent for a non-woven fabric of the present invention is not particularly limited, but is preferably 5 to 90% by mass, more preferably 10 to 80% by mass.
　本発明の不織布用繊維処理剤は、上記した各成分以外に、本発明の効果を損なわない範囲内において、その他の成分を含有していてもよい。その他の成分としては、例えば、界面活性剤、親水性シリコーン樹脂、浸透剤、平滑剤、抗菌剤、酸化防止剤、防腐剤、艶消し剤、顔料、防錆剤、芳香剤、消泡剤、香料、ｐＨ調整剤、粘度調整剤等が挙げられる。界面活性剤としては、例えば、ポリオキシアルキレンアルキルエーテルおよびポリオキシアルキレンアルケニルエーテル、ポリオキシアルキレン脂肪酸エステル、脂肪酸アルカノールアミド等の非イオン界面活性剤、アルファオレフィンスルホン酸塩およびアルキルベンゼンスルホン酸塩、アルキル硫酸塩、ポリオキシアルキレンアルキルエーテル硫酸塩、スルホコハク酸エステル塩等の陰イオン界面活性剤、アルキルベタインおよびアルキルスルホベタイン、アルキルアミノ脂肪酸塩等の両性界面活性剤、アルキル第四級アンモニウム塩等の陽イオン界面活性剤等が挙げられる。 In addition to the above-mentioned components, the fiber treatment agent for a non-woven fabric of the present invention may contain other components as long as the effects of the present invention are not impaired. Other ingredients include, for example, surfactants, hydrophilic silicone resins, penetrants, smoothing agents, antibacterial agents, antioxidants, preservatives, matting agents, pigments, rust inhibitors, fragrances, defoamers, etc. Examples include fragrances, pH adjusters, viscosity regulators and the like. Examples of the surfactant include nonionic surfactants such as polyoxyalkylene alkyl ether and polyoxyalkylene alkenyl ether, polyoxyalkylene fatty acid ester, and fatty acid alkanolamide, alpha olefin sulfonate and alkylbenzene sulfonate, and alkyl sulfate. Anionic surfactants such as salts, polyoxyalkylene alkyl ether sulfates, sulfosuccinic acid ester salts, amphoteric surfactants such as alkylbetaine and alkylsulfobetaines, alkylamino fatty acid salts, cations such as alkyl quaternary ammonium salts. Examples include surfactants.
　本発明の不織布用繊維処理剤の製造方法としては、特に限定されるものではないが、例えば、成分（ａ１）、成分（ａ２）および成分（ａ３）および水を配合し、必要に応じてその他の成分を配合し、常温または必要に応じて加熱（例えば４０～１００℃）して均一に混合することにより、本発明の不織布用繊維処理剤を得ることができる。各成分の配合順序、配合方法は特に限定されない。本発明の不織布用繊維処理剤は、例えば、本発明の不織布用繊維処理剤を必要に応じて水で希釈して、水溶液もしくはエマルション分散液として繊維に付与することができる。 The method for producing the fiber treatment agent for non-woven fabric of the present invention is not particularly limited, but for example, the component (a1), the component (a2), the component (a3) and water are blended, and if necessary, other The fiber treatment agent for a non-woven fabric of the present invention can be obtained by blending the above components and heating at room temperature or, if necessary, (for example, 40 to 100 ° C.) to uniformly mix them. The blending order and blending method of each component are not particularly limited. The non-woven fabric fiber treatment agent of the present invention can be applied to fibers as an aqueous solution or an emulsion dispersion by diluting the non-woven fabric fiber treatment agent of the present invention with water, if necessary.
　次に、本発明の不織布用繊維処理剤を用いた不織布について説明する。 Next, a non-woven fabric using the fiber treatment agent for non-woven fabric of the present invention will be described.
　不織布の原料繊維としては、例えば、ポリエチレンやポリプロピレン等のポリオレフィン繊維、ポリエステル繊維、ポリアミド繊維等の合成繊維、レーヨンやキュプラ等の再生繊維、綿等の天然繊維等や、これらのうち２種以上を使用した混合繊維、複合繊維等が挙げられる。 As raw material fibers for non-woven fabrics, for example, polyolefin fibers such as polyethylene and polypropylene, synthetic fibers such as polyester fibers and polyamide fibers, recycled fibers such as rayon and cupra, natural fibers such as cotton, and two or more of these are used. Examples include the mixed fiber and composite fiber used.
　繊維の断面形態としては、円形断面、異形断面等が挙げられる。異形断面としては、例えば、星形、楕円形、三角形、四角形、五角形、多葉形、アレイ形、Ｔ字形、馬蹄形等が挙げられる。 Examples of the cross-sectional form of the fiber include a circular cross section and a deformed cross section. Examples of the irregular cross section include a star shape, an ellipse shape, a triangle shape, a quadrangle shape, a pentagon shape, a multi-leaf shape, an array shape, a T shape, and a horseshoe shape.
　複合繊維の断面形態としては、例えば、鞘芯型、並列型、偏心鞘芯型、多層型、放射型、海島型等が挙げられる。複合繊維としては、例えば、高密度ポリエチレン／ポリプロピレン、直鎖状低密度ポリエチレン／ポリプロピレン、低密度ポリエチレン／ポリプロピレン、プロピレンと他のα－オレフィンとの二元共重合体または三元共重合体／ポリプロピレン、直鎖状低密度ポリエチレン／高密度ポリエチレン、低密度ポリエチレン／高密度ポリエチレン等のポリオレフィン樹脂／ポリオレフィン樹脂や、ポリプロピレン／ポリエチレンテレフタレート、高密度ポリエチレン／ポリエチレンテレフタレート、直鎖状低密度ポリエチレン／ポリエチレンテレフタレート、低密度ポリエチレン／ポリエチレンテレフタレート等のポリオレフィン樹脂／ポリエステル樹脂や、共重合ポリエステル／ポリエチレンテレフタレート等のポリエステル樹脂／ポリエステル樹脂や、ポリアミド樹脂／ポリエステル樹脂、ポリオレフィン樹脂／ポリアミド樹脂の組み合わせ等が挙げられる。 Examples of the cross-sectional form of the composite fiber include a sheath core type, a parallel type, an eccentric sheath core type, a multi-layer type, a radial type, and a sea island type. Examples of the composite fiber include high density polyethylene / polypropylene, linear low density polyethylene / polypropylene, low density polyethylene / polypropylene, a binary copolymer of propylene and another α-olefin, or a ternary copolymer / polypropylene. , Linear low density polyethylene / high density polyethylene, polyolefin resin / polyolefin resin such as low density polyethylene / high density polyethylene, polypropylene / polyethylene terephthalate, high density polyethylene / polyethylene terephthalate, linear low density polyethylene / polyethylene terephthalate, Examples thereof include a polyolefin resin / polyester resin such as low density polyethylene / polyethylene terephthalate, a polyester resin / polyester resin such as copolymerized polyester / polyethylene terephthalate, a polyamide resin / polyester resin, and a combination of a polyolefin resin / polyamide resin.
　原料繊維の紡糸方法としては、公知の紡糸方法であってよく、例えば、溶融紡糸法、湿式紡糸法、乾式紡糸等が挙げられる。紡糸した繊維は、延伸、捲縮等の処理を行ってもよい。 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 stretching or crimping.
　不織布の製造工程では、繊維の集積層（ウェブ）を形成し、次に繊維同士を結合させる。 In the non-woven fabric manufacturing process, a fiber accumulation layer (web) is formed, and then the fibers are bonded to each other.
　繊維の集積層を形成する方法としては、例えば、乾式法、湿式法、スパンボンド法等が挙げられる。乾式法は、短繊維（例えば１５～１００ｍｍ）を、カード機やエアレイと呼ばれる空気流で一定方向またはランダムに並べて、繊維の集積層を形成する。湿式法は、短い繊維を水中に分散し抄紙機で漉いて繊維の集積層を形成する。スパンボンド法は、溶融した原料樹脂を紡糸機のノズルの先から溶出・紡糸させ、連続した長繊維で繊維の集積層を形成する。繊維を作る（紡糸）工程からそのまま不織布を製造する方法としては、その他にメルトブロー法、フラッシュ紡糸法等が挙げられる。 Examples of the method for forming the fiber accumulation layer include a dry method, a wet method, and a spunbond method. In the dry method, short fibers (for example, 15 to 100 mm) are arranged in a certain direction or randomly by an air flow called a card machine or an air array to form an integrated layer of fibers. In the wet method, short fibers are dispersed in water and strained with a paper machine to form an integrated layer of fibers. In the spunbond method, the molten raw material resin is eluted and spun from the tip of the nozzle of the spinning machine to form an integrated layer of fibers with continuous long fibers. Other methods for producing a non-woven fabric as it is from the fiber-making (spinning) process include a melt blow method and a flash spinning method.
　繊維同士を結合させる方法としては、例えば、サーマルボンド法、ニードルパンチ法、水流絡合法、ケミカルボンド法等が挙げられる。サーマルボンド法は、低融点の熱融着繊維を混合した繊維の集積層を、熱ロールの間を通して熱圧着し、あるいは熱風を当て、繊維同士を接着させる。ニードルパンチ法は、繊維の集積層を、高速で上下するニードル（針）で繰り返し突き刺し、ニードルに刻まれた突起により繊維を絡ませる。水流絡合法は、スパンレース、ウォーターパンチ、ウォータージェットとも呼ばれ、繊維の集積層に高圧の水流を噴射して繊維を絡ませる。ケミカルボンド法は、エマルジョン系の接着樹脂を含浸や噴霧等の方法で繊維の集積層に付着させ、加熱乾燥させて繊維の交点を接着する。 Examples of the method for bonding fibers to each other include a thermal bond method, a needle punch method, a water flow entanglement method, a chemical bond method, and the like. In the thermal bond method, an integrated layer of fibers mixed with low melting point heat-sealed fibers is thermocompression-bonded through between hot rolls, or hot air is applied to bond the fibers to each other. In the needle punching method, the fiber accumulation layer is repeatedly pierced with a needle (needle) that moves up and down at high speed, and the fibers are entangled by the protrusions carved in the needle. The water flow entanglement method, also called spunlace, water punch, or water jet, injects a high-pressure water flow into the fiber accumulation layer to entangle the fibers. In the chemical bond method, an emulsion-based adhesive resin is attached to the fiber accumulation layer by a method such as impregnation or spraying, and the fibers are dried by heating to bond the intersections of the fibers.
　本発明の不織布用繊維処理剤を用いて、繊維に付着処理する方法は、特に限定されるものではない。本発明の不織布用繊維処理剤は、製造工程の円滑化、容易化等を目的とする紡糸油剤、工程油剤や、最終用途に対する効果を目的とする仕上げ油剤として供給されてよい。工程油剤として使用される場合、カード機等での摩擦による静電気の発生、繊維のちぎれ、毛玉の発生等を抑制する、制電性能、平滑性、耐久親水性、熱安定性、安全性等の性能も付与し得る。本発明の不織布用繊維処理剤を繊維に付着させる工程としては、例えば、紡糸、延伸、捲縮等の工程が挙げられる。付着方法としては、繊維の製造工程やその特性に応じて均一に効率よく目的の付着量が得られる手段として、例えば、ローラーによる給油、浸漬、噴霧、泡塗工等の手段で本発明の不織布用繊維処理剤を繊維に供給し、乾燥する方法等が挙げられる。あるいは、繊維同士を結合した不織布に対して本発明の不織布用繊維処理剤を、例えば、ローラーによる給油、浸漬、噴霧、泡塗工等の手段で、供給、乾燥することで付着処理してもよい。 The method of adhering to fibers using the fiber treatment agent for non-woven fabrics of the present invention is not particularly limited. The fiber treatment agent for a non-woven fabric of the present invention may be supplied as a spinning oil agent for the purpose of facilitating or facilitating the manufacturing process, a process oil agent, or a finishing oil agent for the purpose of the effect for the final use. When used as a process oil, it suppresses the generation of static electricity due to friction on card machines, fiber tears, pilling, etc., antistatic performance, smoothness, durable hydrophilicity, thermal stability, safety, etc. Performance can also be imparted. Examples of the step of adhering the fiber treatment agent for a non-woven fabric of the present invention to the fiber include steps such as spinning, stretching, and crimping. As an adhesion method, the non-woven fabric of the present invention can be uniformly and efficiently obtained according to the fiber manufacturing process and its characteristics, for example, by means of refueling with a roller, dipping, spraying, foam coating, or the like. Examples thereof include a method of supplying a fiber treatment agent for fiber to the fiber and drying it. Alternatively, the fiber treatment agent for a non-woven fabric of the present invention may be adhered to a non-woven fabric in which fibers are bonded to each other by supplying and drying by means such as lubrication with a roller, dipping, spraying, and foam coating. Good.
　本発明の不織布用繊維処理剤は、合成繊維に対し、吸水性能ならびに帯電防止性能等を付与し、不織布製造の工程油剤や仕上げ油剤として利用できるとともに、不織布へ帯電防止性と親水性、繰り返し透水性を付与する。 The fiber treatment agent for non-woven fabrics of the present invention imparts water absorption performance, antistatic performance, etc. to synthetic fibers, and can be used as a process oil or finishing oil for non-woven fabric production, and also has antistatic properties, hydrophilicity, and repeated water permeation into the non-woven fabric. Give sex.
　本発明の不織布用繊維処理剤の繊維への付着量は、特に限定されるものではないが、本発明の効果を得る点や工程油剤としての性能等を考慮すると、繊維質量を基準とし固形分として０．０５～２質量％が好ましく、０．１～１．５質量％がより好ましい。 The amount of the fiber treatment agent for a non-woven fabric of the present invention adhered to the fiber is not particularly limited, but the solid content is based on the fiber mass in consideration of the effect of the present invention and the performance as a process oil. It is preferably 0.05 to 2% by mass, more preferably 0.1 to 1.5% by mass.
　本発明の不織布用繊維処理剤で繊維が付着処理された不織布は、不織布の原糸もしくは原綿、これらを加工した不織布自身へ吸水性能ならびに帯電防止性能等を付与するとともに、薬剤処理した不織布の繰り返し透水性を損なうことなく工程通過性を改善できることから、このような性能が要求される各種用途に使用することができる。本発明の不織布が使用可能な分野としては、例えば、衛生材料用、医療用、衣料用、日用雑貨、農業・土木資材用、テープ用基材、フィルター用、包装資材用等が挙げられる。その中でも、紙おむつ、生理用品、マスク、包帯、絆創膏、消毒布、サージカルテープ等の衛生材料用、特に、乳児用使い捨ておむつ、介護用使い捨ておむつ等の紙おむつ、ナプキン等の生理用品等の吸収性物品の表面材、例えばトップシートや、トップシートと吸収要素との間に配置される中間シート等に好適である。 The non-woven fabric to which fibers are adhered and treated with the fiber treatment agent for non-woven fabric of the present invention imparts water absorption performance, antistatic performance, etc. to the raw yarn or cotton of the non-woven fabric and the non-woven fabric itself processed by these, and repeats the chemical-treated non-woven fabric. Since the process passability can be improved without impairing the water permeability, it can be used in various applications requiring such performance. Examples of fields in which the non-woven fabric of the present invention can be used include sanitary materials, medical materials, clothing, daily necessities, agricultural / civil engineering materials, tape base materials, filters, packaging materials, and the like. Among them, for sanitary materials such as paper diapers, sanitary products, masks, bandages, adhesive plasters, disinfectant cloths, surgical tapes, especially absorbent articles such as disposable diapers for infants, disposable diapers for long-term care, and sanitary products such as napkins. It is suitable for a surface material, for example, a top sheet, an intermediate sheet arranged between the top sheet and an absorbing element, and the like.
　以下に、実施例により本発明を更に詳しく説明するが、本発明はこれらの実施例に限定されるものではない。
１．不織布用繊維処理剤の調製
　表４、表５の配合（質量部）の各成分を、５０～８０℃で１時間撹拌して実施例および比較例の不織布用繊維処理剤を作製した。 Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
1. 1. Preparation of Fiber Treatment Agent for Nonwoven Fabrics The components of the formulations (parts by mass) shown in Tables 4 and 5 were stirred at 50 to 80 ° C. for 1 hour to prepare fiber treatment agents for nonwoven fabrics of Examples and Comparative Examples.
　表４、表５に示す直鎖または分岐のアルキルリン酸エステル塩およびポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩から選ばれる少なくとも１種（Ａ）として、アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１６（ａ１）、アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１８（ａ２）、アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１０以下（ａ３）の各成分は、表１、表２、表３に示したものを使用した。なお、表４、表５に記載の配合量は有効分を示している。また、表６、表７に記載の各実施例は、不織布の種類を変更したこと以外は、表４、表５に記載の配合量で不織布用繊維処理剤を処理し、試験体を作製した。 As at least one (A) selected from the linear or branched alkyl phosphate salts and polyoxyalkylene linear alkyl ether phosphoric acid ester salts shown in Tables 4 and 5, the alkyl group of the alkyl phosphate ester salt and / Alternatively, at least one of the alkyl groups of the polyoxyalkylene linear alkyl ether phosphoric acid ester salt has 16 carbon atoms (a1), the alkyl group of the alkyl phosphate ester salt and / or the polyoxyalkylene linear alkyl ether phosphoric acid ester salt. At least one of the alkyl groups has 18 (a2) carbon atoms, and at least one of the alkyl groups of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphoric acid ester salt has 10 or less carbon atoms (a3). As each component of), those shown in Tables 1, 2 and 3 were used. The blending amounts shown in Tables 4 and 5 indicate the effective amount. Further, in each of the examples shown in Tables 6 and 7, the fibrous treatment agent for non-woven fabric was treated with the blending amounts shown in Tables 4 and 5 except that the type of the non-woven fabric was changed to prepare a test piece. ..
アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１６（ａ１） At least one of the alkyl groups of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 16 carbon atoms (a1).
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１８（ａ２） At least one of the alkyl groups of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 18 carbon atoms (a2).
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１０以下（ａ３） At least one of the alkyl group of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 10 or less carbon atoms (a3).
Figure JPOXMLDOC01-appb-T000004
Figure JPOXMLDOC01-appb-T000004
２．評価
　上記において作製した不織布用繊維処理剤を用いて次の評価を行った。なお、不織布としては、ＰＥＴ／ＰＥ短繊維およびエアスルー不織布とＰＰスパンボンド不織布をそれぞれ使用した。 2. 2. Evaluation The following evaluation was performed using the fiber treatment agent for non-woven fabric prepared above. As the non-woven fabric, PET / PE short fibers, air-through non-woven fabric and PP spunbonded non-woven fabric were used, respectively.
　以下の記述において、薬剤は実施例および比較例の不織布用繊維処理剤、付着量は薬剤の水以外の固形分（全有効分）の付着量を意味する。 In the following description, the drug means the fiber treatment agent for non-woven fabrics of Examples and Comparative Examples, and the adhering amount means the adhering amount of the solid content (total effective amount) other than water of the drug.
＜ＰＥＴ／ＰＥ短繊維およびエアスルー不織布＞
［通液速度（ストライクスルー試験）］
　透水性能はEDANA法のＣＯＶＥＲＳＴＯＣＫ法(ＮＷＳＰ　０７０．３)を参考に測定した。測定装置にはＬＥＮＺＩＮＧ　ＴＥＣＨＮＩＫ社製の通液度測定器(型式：ＬＩＳＴＥＲ　ＡＣ)を用い、測定器付属のアクリル板の上に、指定の濾紙（ＩＮＴＥＣ　ＧＲＡＤＥ：９８９　１０ｃｍ角）を３枚重ね、さらにその上に試験布（薬剤付着量０．６％、１０ｃｍ角）を置き、試験布の上に測定器付属の電極付き通液検知プレートを置いて測定の準備を行った。その後、試験布表面から25mmの高さのところで５ｍＬの生理食塩液（０．９％塩化ナトリウム水溶液）を２５ｍＬ／３．５秒の速さで滴下した。滴下から生理食塩水が布表面を通過終了するまでの時間を通液度測定器で計測し、通液速度［秒／５ｍＬ］とした。 <PET / PE short fiber and air-through non-woven fabric>
[Liquid flow rate (strike through test)]
The water permeability was measured with reference to the COVERSTOCK method (NWSP 070.3) of the EDANA method. A liquid permeability measuring device (model: LISTER AC) manufactured by LENZING TECHNIK was used as the measuring device, and three designated filter papers (INTEC GRADE: 989 10 cm square) were stacked on the acrylic plate attached to the measuring device, and further. A test cloth (drug adhesion amount 0.6%, 10 cm square) was placed on the test cloth, and a liquid passage detection plate with an electrode attached to the measuring instrument was placed on the test cloth to prepare for measurement. Then, 5 mL of physiological saline (0.9% sodium chloride aqueous solution) was added dropwise at a height of 25 mm from the surface of the test cloth at a rate of 25 mL / 3.5 seconds. The time from the dropping to the end of the physiological saline passing through the cloth surface was measured with a liquid flow measuring device, and the liquid passing speed was set to [seconds / 5 mL].
［耐久親水性（繰り返し透水性）］
　ストライクスルー試験の操作を１回毎に濾紙を交換しながら５回連続で行い、それぞれの通液速度を測定した。
評価は１回目の通液速度に対し２倍を超える通液速度が測定されるまでの試行回数が５回を超える場合は◎+、５回目は◎、４回目は○、３回目は△、２回目は×とした。 [Durable hydrophilicity (repeated water permeability)]
The strike-through test was performed five times in a row while changing the filter paper each time, and the liquid passing speed of each was measured.
Evaluation is more than twice the first liquid flow speed. If the number of trials until the liquid flow speed is measured exceeds 5 times, ◎ +, 5th time is ◎, 4th time is ○, 3rd time is △, The second time was marked as x.
［ハンドリング性能（作業性）］
　ハンドリング性能は、配合製品の性状が１）流動性を保つこと、２）製品分離を生じないことを評価対象とし、配合したリン酸エステル水溶液の濃度が５０％のときに１）、２）を両立できているものは◎＋、濃度３０％のとき両立できるものは◎、濃度３０％のとき流動性はやや劣るものの、製品分離を生じず、製品としては問題ないレベルのものは○、濃度３０％のとき製品分離は生じないものの、流動性がかなり劣るものは△、濃度３０％のとき流動性がかなり劣り、製品分離を生じているものは×とした。 [Handling performance (workability)]
The handling performance is evaluated by 1) maintaining the fluidity of the compounded product and 2) not causing product separation, and 1) and 2) when the concentration of the compounded phosphoric acid ester aqueous solution is 50%. Those that are compatible are ◎ +, those that are compatible at a concentration of 30% are ◎, those that are slightly inferior in fluidity at a concentration of 30%, but do not cause product separation, and those that are at a level that does not cause any problems as a product are ○, concentration When the concentration was 30%, product separation did not occur, but the fluidity was considerably inferior, and when the concentration was 30%, the fluidity was considerably inferior, and the product separation occurred was evaluated as x.
［浸透性（綿沈降法）］
　評価する薬剤の５％水溶液（有効分換算）を２００ｍＬ調製して、その上から薬剤未処理のポリエチレンテレフタレート／ポリエチレン複合繊維製評価用短繊維（１．７ｄＴｅｘ，３８ｍｍ）０．５ｇを静かに投下し、短繊維全体が水溶液中に水没するまでの時間を測定した。
　評価は短繊維全体が水溶液中に水没するまでの時間が３秒以内であれば◎+、５秒以内であれば◎、１０秒以内であれば○、１５秒以内であれば△、１５秒を超えるものは×とした。 [Permeability (cotton sedimentation method)]
Prepare 200 mL of a 5% aqueous solution (effective component equivalent) of the drug to be evaluated, and gently drop 0.5 g of the evaluation short fiber (1.7 dTex, 38 mm) made of polyethylene terephthalate / polyethylene composite fiber untreated with the drug. Then, the time until the entire short fiber was submerged in the aqueous solution was measured.
Evaluation is ◎ + if the time until the entire short fiber is submerged in the aqueous solution is within 3 seconds ◎ + if it is within 5 seconds ◎, if it is within 10 seconds ○, if it is within 15 seconds △, 15 seconds Those exceeding the value are marked with x.
［カード通過性］
　評価する薬剤をポリプロピレン製評価用短繊維（１．７ｄＴｅｘ，３８ｍｍ）２０ｇに付着量０．５％（有効分換算）となるように浸漬処理し、８０℃で３０分間乾燥させた後、オープナーで開繊した。開繊した処理原綿を全量ミニチュアローラーカードに通過させ、通過時の状態ならびに得られたウェブの状態を以下の項目について確認した。
(1)フライ発生の有無
(2)ネップ発生の有無
(3)スカム発生の有無
(4)シリンダーへの巻きつきの有無
(5)ウェブの形成不良
　評価は(1)から(5)の項目が全く生じなければ◎+、軽度の不良が１つ生じた場合は◎、軽度の不良が２つ生じた場合は○、軽度の不良が３つ以上生じた場合は△、いずれか重度の不良が生じれば×とした。 [Card passability]
The drug to be evaluated was immersed in 20 g of polypropylene evaluation short fibers (1.7 dTex, 38 mm) so that the amount of adhesion was 0.5% (effective portion equivalent), dried at 80 ° C. for 30 minutes, and then opened with an opener. The fiber was opened. All the spread processed raw cotton was passed through a miniature roller card, and the state at the time of passing and the state of the obtained web were confirmed for the following items.
(1) Presence or absence of fly occurrence
(2) Presence or absence of NEP
(3) Presence or absence of scum
(4) Presence or absence of wrapping around the cylinder
(5) Web poor formation evaluation is ◎ + if items (1) to (5) do not occur at all, ◎ if one minor defect occurs, ○ if two minor defects occur, When three or more minor defects occurred, the value was Δ, and when any of the severe defects occurred, the value was x.
　上記評価の結果を表４、表５に示す。 The results of the above evaluation are shown in Tables 4 and 5.
Figure JPOXMLDOC01-appb-T000005
Figure JPOXMLDOC01-appb-T000005
Figure JPOXMLDOC01-appb-T000006
Figure JPOXMLDOC01-appb-T000006
＜ＰＰスパンボンド不織布＞
　不織布をＰＰスパンボンド不織布に変更したこと以外は、ＰＥＴ／ＰＥ短繊維およびエアスルー不織布と同様に試験体を作製し、上記のとおりの評価方法に基づき、［通液速度（ストライクスルー試験）］および［耐久親水性］を試験した。 <PP spunbond non-woven fabric>
Specimens were prepared in the same manner as PET / PE short fibers and air-through non-woven fabric except that the non-woven fabric was changed to PP spunbonded non-woven fabric, and based on the evaluation method as described above, [Liquid flow rate (strike-through test)] and [Durable hydrophilicity] was tested.
　上記評価の結果を表６、表７に示す。 The results of the above evaluation are shown in Tables 6 and 7.
Figure JPOXMLDOC01-appb-T000007
Figure JPOXMLDOC01-appb-T000007
Figure JPOXMLDOC01-appb-T000008
  
Figure JPOXMLDOC01-appb-T000008
  

Claims (3)

  1. 　直鎖または分岐のアルキルリン酸エステル塩、および、ポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩から選ばれる少なくとも１種の成分（Ａ）を含有し、
    　前記成分（Ａ）には、前記アルキルリン酸エステル塩のアルキル基および／またはポリオキシアルキレン直鎖アルキルエーテルリン酸エステル塩のアルキル基のうち少なくとも一つが炭素数１６である成分（ａ１）および炭素数１８である成分（ａ２）を含み、
    　前記成分（ａ１）および成分（ａ２）の質量比（ａ１）／（ａ２）が１．０～３．４であることを特徴とする不織布用繊維処理剤。     It contains at least one component (A) selected from a linear or branched alkyl phosphate ester salt and a polyoxyalkylene linear alkyl ether phosphate ester salt.
    In the component (A), at least one of the alkyl group of the alkyl phosphate ester salt and / or the alkyl group of the polyoxyalkylene linear alkyl ether phosphate salt has 16 carbon atoms (a1) and carbon. Contains the component (a2) of number 18
    A fiber treatment agent for a non-woven fabric, wherein the mass ratio (a1) / (a2) of the component (a1) and the component (a2) is 1.0 to 3.4.
  2. 　前記成分（Ａ）のうち、前記アルキル基のうち少なくとも一つが炭素数１０以下である成分（ａ３）をさらに含有し、
    　前記成分（ａ１）と前記成分（ａ２）の質量の合計（ａ１＋ａ２）に対する前記成分（ａ３）の質量比（ａ３）／（ａ１＋ａ２）が３．０以下であることを特徴とする請求項１に記載の不織布用繊維処理剤。     Of the component (A), at least one of the alkyl groups contains a component (a3) having 10 or less carbon atoms.
    The first aspect of the present invention is that the mass ratio (a3) / (a1 + a2) of the component (a3) to the total mass (a1 + a2) of the component (a1) and the component (a2) is 3.0 or less. The fibrous treatment agent for non-woven fabrics described.
  3. 　前記成分（Ａ）として、前記アルキルリン酸エステル塩を含み、
    　前記成分（ａ１）および前記成分（ａ２）の質量の合計が、全アルキルリン酸エステル塩中の１０～７０質量％であることを特徴とする請求項１または２に記載の不織布用繊維処理剤。     The component (A) contains the alkyl phosphate ester salt.
    The fibrous treatment agent for a non-woven fabric according to claim 1 or 2, wherein the total mass of the component (a1) and the component (a2) is 10 to 70% by mass in the total alkyl phosphate ester salt. ..
PCT/JP2020/029889 2019-08-09 2020-08-04 Fiber treatment agent for nonwoven cloth WO2021029287A1 (en)

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JPS6359478A (en) * 1987-05-13 1988-03-15 株式会社クラレ Hydrophobic synthetic fiber product reduced in water absorbing speed and having excellent processability
JPH0482961A (en) * 1990-07-26 1992-03-16 Miyoshi Oil & Fat Co Ltd Treating agent for producing nonwoven fabric
JPH08325937A (en) * 1995-05-31 1996-12-10 Teijin Ltd Thermally fused conjugated fiber having hydrophobic property
JP2002069752A (en) * 2000-08-25 2002-03-08 Teijin Ltd Hydrophilic heat-bonding fiber having both of hydrophilic durability and resistance to discoloration
JP2015094060A (en) * 2013-11-14 2015-05-18 花王株式会社 Nonwoven fabric
WO2019013277A1 (en) * 2017-07-12 2019-01-17 ミヨシ油脂株式会社 Fiber treatment agent for non-woven fabrics, and non-woven fabric using same

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JP6057489B1 (en) * 2016-05-25 2017-01-11 竹本油脂株式会社 Polyolefin synthetic fiber treatment agent, aqueous solution thereof, polyolefin synthetic fiber treatment method, polyolefin synthetic fiber, and thermal bond nonwoven fabric

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6359478A (en) * 1987-05-13 1988-03-15 株式会社クラレ Hydrophobic synthetic fiber product reduced in water absorbing speed and having excellent processability
JPH0482961A (en) * 1990-07-26 1992-03-16 Miyoshi Oil & Fat Co Ltd Treating agent for producing nonwoven fabric
JPH08325937A (en) * 1995-05-31 1996-12-10 Teijin Ltd Thermally fused conjugated fiber having hydrophobic property
JP2002069752A (en) * 2000-08-25 2002-03-08 Teijin Ltd Hydrophilic heat-bonding fiber having both of hydrophilic durability and resistance to discoloration
JP2015094060A (en) * 2013-11-14 2015-05-18 花王株式会社 Nonwoven fabric
WO2019013277A1 (en) * 2017-07-12 2019-01-17 ミヨシ油脂株式会社 Fiber treatment agent for non-woven fabrics, and non-woven fabric using same

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