Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K3/00—Materials not provided for elsewhere
  • C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
• • 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
  • D06M13/144—Alcohols; Metal alcoholates
  • D06M13/148—Polyalcohols, e.g. glycerol or glucose
• • 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
  • D06M13/322—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 nitrogen
  • D06M13/395—Isocyanates
• • 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
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof

Definitions

• the present invention relates to a water-repellent fiber structure and a method for producing the same.
• PFOA perfluorooctanoic acid
• PFOS perfluorooctanesulfonic acid
• Patent Document 1 As an environmentally friendly non-fluorine water-repellent fiber structure that aims to achieve the same performance as such fluorine water-repellent treatments, a method has been proposed in which water-repellency and oil-repellency are imparted using a hydrocarbon compound and a blocked isocyanate (Patent Document 1).
• methods proposed for imparting water repellency and washing durability using a non-fluorine water repellent finish include adhering a resin coating containing a hydrocarbon compound, a silicone compound, and a melamine compound to the fiber surface (Patent Document 2), and applying a water repellent agent to the fabric that contains a hydrogen group-containing organopolysiloxane, a polymer with an aliphatic hydrocarbon group having 16 or more carbon atoms as a side chain, and an antistatic agent (Patent Document 3).
• Patent Document 4 Also known is a method for improving the washing durability of fluorine-based water-repellent finishes by using polyisocyanates containing alicyclic diisocyanate monomer units.
• JP 2021-155896 A International Publication No. 2015-083627 JP 2015-165056 A JP 2014-65833 A
• Patent Documents 1 to 3 result in low water repellency after washing, and are unable to achieve both high water repellency comparable to that achieved with fluorine water repellent treatment and washing durability.
• Patent Document 4 can improve washing durability by using a fluorine water-repellent treatment, but the water repellency of non-fluorine water-repellent treatments is lower than that of fluorine water-repellent treatments in terms of surface tension, and even if the technology described in the same document is applied to non-fluorine water-repellent treatments, it is not sufficient to be able to maintain high water repellency after washing.
• the present invention was made in consideration of such conventional inventions, and relates to a water-repellent fiber structure that has excellent water repellency and washing durability, and a method for producing the same.
• a water-repellent fiber structure comprising a fiber base material containing synthetic fibers and a resin coating attached to a surface of the synthetic fibers, the resin coating being formed using (a) an acrylic acid-based compound, (b) an aromatic isocyanate compound, (c) an alicyclic isocyanate compound, and (d) a polyol compound, the (a) acrylic acid-based compound containing a unit represented by the following structural formula (1) and a unit represented by the following structural formula (2), the water-repellent fiber structure having a fluorine content of 25 ng/g or less and an air permeability of 0.1 cm3 / cm2 /sec to 15 cm3 / cm2 /sec as measured by combustion ion chromatography: Structural Formula (1)
• R1 represents an alkyl group having 16 or more carbon atoms.
• R 1 is an alkyl group having 18 carbon atoms.
• (d) polyol compound includes a triol compound represented by the following structural formula (3): Structural Formula (3)
• n is an integer from 1 to 4.
• n is an integer from 1 to 4.
• [4] The water-repellent fiber structure according to any one of [1] to [3], wherein the amount of the aromatic isocyanate compound (b) added is 0.16% by mass to 1.2% by mass relative to the synthetic fiber.
• [5] The water-repellent fiber structure according to any one of [1] to [4], wherein the synthetic fiber is a polyamide fiber or a polyester fiber.
• the amount of the acrylic acid-based compound (a) added is 0.6% by mass to 2.0% by mass relative to the synthetic fiber.
• a method for producing a water-repellent fiber structure according to any one of [1] to [8], comprising a step of impregnating a fiber base material containing synthetic fibers with a treatment liquid containing (a) the acrylic acid compound, (b) the aromatic isocyanate compound, (c) the alicyclic isocyanate compound, and (d) the polyol compound, and then a step of dry heat treating the fiber base material impregnated with the treatment liquid obtained in the step.
• the present invention can provide a water-repellent fiber structure that combines high water repellency and its washing durability. It is particularly noteworthy that the present invention makes it possible to obtain a water-repellent fiber structure that combines high water repellency and durability comparable to that of fluorine water repellent processing, without substantially using fluorine compounds.
• the water-repellent fiber structure of the present invention is a water-repellent fiber structure comprising a fiber base material containing synthetic fibers and a resin coating adhered to a surface of the synthetic fibers, the resin coating being formed using (a) an acrylic acid-based compound, (b) an aromatic isocyanate compound, (c) an alicyclic isocyanate compound, and (d) a polyol compound, and the (a) acrylic acid-based compound contains a unit represented by the following structural formula (1) and a unit represented by the following structural formula (2).
• R1 represents an alkyl group having 16 or more carbon atoms.
• the word “attached” is defined as being physically or chemically bonded, in which case the resin coating will not easily come off by washing or the like.
• the (a) acrylic acid compound used in the present invention is an acrylic acid ester, and includes those having an alkyl group via an ester bond and those having an ethylene group and a hydroxy group. Specifically, an acrylic acid ester having an alkyl group via an ester bond and an acrylic acid ester having an ethylene group and a hydroxy group may be used in combination.
• the alkyl group in the acrylic acid ester is represented by R 1 in the structural formula (1), and R 1 is an alkyl group having 16 or more carbon atoms. Among them, R 1 is preferably an alkyl group having 16 to 28 carbon atoms, more preferably an alkyl group having 18 to 22 carbon atoms, and most preferably an alkyl group having 18 carbon atoms.
• R 1 has 15 or less carbon atoms, sufficient water repellency cannot be obtained, and conversely, if it has 29 or more carbon atoms, the washing durability of the water-repellent coating decreases.
• R 1 has 18 carbon atoms.
• the (a) acrylic acid compound has an alkyl group having 18 carbon atoms, it may also contain an acrylic acid compound having an alkyl group having a carbon number within the range of 18 ⁇ 2.
• RUCO registered trademark-DRY-DHC
• the acrylic acid compound also contains 2-hydroxyethyl acrylate, which has an ethylene group and a hydroxy group via an ester bond.
• 2-hydroxyethyl acrylate which has an ethylene group and a hydroxy group via an ester bond.
• the presence of a hydroxy group increases reactivity with isocyanate, which tends to improve washing durability.
• An example of a commercially available agent containing 2-hydroxyethyl acrylate is "RUCO" (registered trademark)-DRY-DHC (manufactured by Rudolph).
• the acrylic acid-based compound having the unit represented by the structural formula (1) accounts for 80% by mass to 99% by mass of the total amount of the (a) acrylic acid-based compound.
• the amount of (a) acrylic acid-based compound added is preferably in the range of 0.6% by mass to 2.0% by mass relative to the fiber mass, and from the viewpoint of water repellency and its washing durability, is more preferably in the range of 1.0% by mass to 2.0% by mass, and even more preferably in the range of 1.2% by mass to 2.0% by mass. If the amount of (a) acrylic acid-based compound added is 0.6% by mass or more relative to the fiber mass, a large proportion of the fiber surface is covered, and good water repellency is obtained. Note that even if the amount of (a) acrylic acid-based compound added is too large relative to the fiber mass, the water repellency does not necessarily improve accordingly.
• aromatic isocyanate compounds include diphenylmethane diisocyanate, 1,4-phenylene diisocyanate, tolylene diisocyanate, and 1,5-naphthylene diisocyanate, with tolylene diisocyanate being the most preferred.
• Aromatic isocyanate compounds have a highly planar molecular structure, and compared to copolymers derived from aliphatic/alicyclic isocyanates, they have excellent mechanical and thermal properties, and contribute to the washing durability of water repellency, but they are prone to yellowing when exposed to ultraviolet rays and the like.
• agents containing tolylene diisocyanate include "RIKEN RESIN” (trademark) MBX-31 (manufactured by Miki Riken Kogyo Co., Ltd.) and “MEIKANATE” (registered trademark) TP-10 (manufactured by Meisei Chemical Industry Co., Ltd.).
• alicyclic polyisocyanates examples include 1,3-bis(isocyanatomethyl)cyclohexane, 1,4-bis(isocyanatomethyl)cyclohexane, 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (also known as isophorone diisocyanate), bis-(4-isocyanatocyclohexyl)methane (also known as hydrogenated MDI), and norbornane diisocyanate, which are characterized by their resistance to yellowing.
• isophorone diisocyanate which has a high concentration of isocyanate groups, is preferred.
• RUCO registered trademark
• DHC manufactured by Rudolph
• isocyanate compounds of (b) aromatic isocyanate compounds and (c) alicyclic isocyanate compounds used in the present invention compounds that have a structure in which the isocyanate group is blocked and can regenerate the isocyanate group by heating at 70°C to 200°C are preferred, and such so-called blocked isocyanate compounds are also included in the isocyanate compounds.
• blocked isocyanate compounds include polyfunctional blocked isocyanate group-containing compounds obtained by reacting an isocyanate compound with, for example, phenol, diethyl malonate, methyl ethyl ketoxime, methyl butyl ketoxime, sodium bisulfite, and ⁇ -caprolactam.
• a dissociation catalyst may be used to promote an increase in the thermal dissociation rate of the blocked isocyanate and a decrease in the thermal dissociation temperature.
• Preferred catalysts include dibutyltin diolate, dibutyltin stearate, zinc stearyl, and organic amine compounds.
• the amount of the aromatic isocyanate compound (b) added is preferably in the range of 0.16% by mass to 1.2% by mass, more preferably in the range of 0.16% by mass to 1.20% by mass, and even more preferably in the range of 0.30% by mass to 0.98% by mass, relative to the synthetic fiber, from the viewpoint of imparting sufficient washing durability.
• the amount of the alicyclic isocyanate compound (c) added is preferably in the range of 0.02% by mass to 0.2% by mass, and more preferably in the range of 0.10% by mass to 0.20% by mass, relative to the synthetic fiber.
• the amount of the aromatic isocyanate compound (b) added is in the range of 0.16% by mass to 1.2% by mass, and the amount of the alicyclic isocyanate compound (c) added is in the range of 0.02% by mass to 0.2% by mass, sufficient washing durability can be obtained without impairing the texture of the fiber structure or the liquid stability when used as a treatment liquid, and the more preferable the range, the higher the effect.
• the total amount of the (b) aromatic isocyanate compound and (c) alicyclic isocyanate compound is preferably in the range of 0.18% to 1.4% by mass relative to the fiber mass, more preferably in the range of 0.18% to 1.40% by mass, and from the viewpoint of the washing durability of the water repellency, more preferably in the range of 0.4% to 1.0% by mass, and particularly preferably in the range of 0.40% to 0.80% by mass. If the total amount of the (b) aromatic isocyanate compound and (c) alicyclic isocyanate compound is 0.18% by mass or more relative to the fiber mass, crosslinking of the resin coating proceeds and sufficient washing durability is obtained.
• the total amount of the (b) aromatic isocyanate compound and (c) alicyclic isocyanate compound is 1.4% by mass or less relative to the fiber mass, sufficient washing durability is obtained without impairing the texture of the fiber structure or the liquid stability when used as a treatment liquid.
• the total amount of the (b) aromatic isocyanate compound and the (c) alicyclic isocyanate compound is preferably contained in the range of 30% by mass to 70% by mass relative to the (a) acrylic acid compound, and more preferably in the range of 50% by mass to 70% by mass. If the total amount of the (b) aromatic isocyanate compound and the (c) alicyclic isocyanate compound added is in the range of 30% by mass to 70% by mass relative to the (a) acrylic acid compound, sufficient washing durability can be obtained without impairing the texture or water repellency, and the more preferable the range, the greater the effect.
• Commercially available agents containing trimethylolpropane include "RIKEN RESIN" (trademark) MBX-31 (manufactured by Miki Riken Kogyo Co., Ltd.).
• the amount of polyol compound (d) added is preferably in the range of 0.04% by mass to 0.20% by mass relative to the fiber mass, and more preferably in the range of 0.09% by mass to 0.20% by mass from the viewpoint of water repellency and its washing durability. If the amount of polyol compound (d) added is 0.04% by mass or more relative to the fiber mass, crosslinking of the resin coating progresses and sufficient washing durability is obtained. Furthermore, if the amount of polyol compound (d) added is 0.20% by mass or less relative to the fiber mass, good water repellency can be obtained without the non-crosslinked hydroxyl groups acting as hydrophilic groups inhibiting water repellency.
• the resin film of the water-repellent fiber structure of the present invention may contain an antistatic agent. It is preferable to use an antistatic agent that does not inhibit water repellency.
• the antistatic agent include anionic surfactants such as higher alcohol sulfates, sulfated oils, sulfonates, and phosphates; cationic surfactants such as amine salts, quaternary ammonium salts, and imidaline quaternary salts; nonionic surfactants such as polyethylene glycol and polyhydric alcohol esters; amphoteric surfactants such as imidaline quaternary salts, alanine and betaine; and polymeric compound types such as the antistatic polymers and polyalkylamines mentioned above.
• the inclusion of an antistatic agent may increase slippage between the threads, and an antistatic agent made of an organic salt of guanidine hydrochloride is preferable from the viewpoint of suppressing slippage and inhibiting water repellency.
• Antistatic agents are effective when included in the fiber structure at 0.02% to 0.10% by mass, and they have little effect on water repellency.
• the resin coating may contain a silicone compound.
• a silicone-based compound is a polysiloxane, and is usually a compound having a dimethylsiloxane structural unit.
• Compounds in which the methyl group of the dimethylsiloxane structural unit is replaced with an ethyl group or a compound in which the methyl group is replaced with hydrogen, such as compounds having a methylhydrosiloxane structural unit or an ethylmethylsiloxane structural unit, can also be used.
• the resin coating contains a silicone compound, the texture of the fiber structure can be made soft.
• the resin film may contain fine particles.
• the fine particles may be either inorganic or organic, and may be mixed.
• inorganic fine particles include aluminum oxide, silicon dioxide, titanium oxide, kaolin, bentonite, talc, calcium carbonate, calcium silicate, magnesium oxide, etc. These may be used alone or in a mixture of two or more types, and it is preferable to use them as an aqueous dispersion. Of these, silicon dioxide is preferably used.
• the particle diameter of such inorganic fine particles is preferably 10,000 nm or less, more preferably 5 nm to 500 nm, and even more preferably 10 nm to 100 nm.
• organic fine particles examples include particles made of acrylic resins, olefin resins, and melamine resins.
• composite particles in which the surface of organic particles is coated with silica or alumina can also be used.
• the particle diameter of the organic fine particles is preferably 0.01 ⁇ m to 10.00 ⁇ m, and more preferably 0.10 ⁇ m to 6.00 ⁇ m.
• the particle size referred to in this invention is the particle size measured by observing the fiber structure with a scanning electron microscope (SEM).
• the resin coating contains particles, which helps to prevent slippage between the threads. Also, the inclusion of particles creates minute irregularities on the fiber surface, creating a lotus leaf effect.
• the method for producing the water-repellent fiber structure of the present invention includes a process for impregnating the fiber substrate containing the synthetic fibers with a treatment liquid containing (a) an acrylic acid compound, (b) an aromatic isocyanate compound, (c) an alicyclic isocyanate compound, and (d) a polyol compound, followed by a dry heat treatment of the fiber substrate impregnated with the treatment liquid obtained in the process. That is, the fiber substrate containing the synthetic fibers is impregnated with a treatment liquid containing (a) an acrylic acid compound, (b) an aromatic isocyanate compound, (c) an alicyclic isocyanate compound, and (d) a polyol compound, and then the dry heat treatment is performed.
• the drying process it is preferable to dry at 100°C to 140°C and then cure at a temperature of 160°C to 200°C, but the drying at 100°C to 140°C can be omitted.
• the pad steam method can be used, in which the fiber substrate is immersed in the above-mentioned treatment solution, then steamed under saturated steam at 100°C to 200°C, and then dry-heated to adhere the acrylic acid-based compound to the fiber substrate.
• the above treatment allows (a) acrylic acid compounds, (b) aromatic isocyanate compounds, (c) alicyclic isocyanate compounds, and (d) polyol compounds to react with each other, or at least one of (a) to (d) to react physically or chemically with the surface of the synthetic fiber and adhere to the surface of the synthetic fiber, forming a resin film.
• the isocyanate compounds crosslink the synthetic fiber and the acrylic acid compounds, and the polyol compounds contribute to the formation of a network-like crosslinked structure.
• the treatment liquid may contain at least one of diethylene glycol monobutyl ether and ethylene glycol monobutyl ether from the viewpoint of fiber penetration and mechanical stability. These are water-soluble organic solvents, and contribute to a significant improvement in the aggregation suppression effect of the water-repellent resin. These organic solvents may be used alone or in combination of two types in any ratio.
• the content of at least one of the diethylene glycol monobutyl ether and ethylene glycol monobutyl ether in the formulation liquid is preferably 0.5% by mass to 1.5% by mass, and more preferably 0.5% by mass to 1.2% by mass.
• a resin coating may be attached to the fiber surface of the fiber structure, and then calendering may be performed.
• calendering may be performed.
• a cold calendering without applying heat or a temperature of 130°C to 200°C may be used.
• the synthetic fiber used in the fiber structure of the present invention is a polyamide fiber
• the sulfone group-containing compounds include salts of ⁇ -olefin sulfonates, sulfonates of phenol-formaldehyde resins, and sodium isophthalate dimethylsulfonate. More preferred are salts of ⁇ -olefin sulfonates with an average carbon number of 12 to 30.
• examples of polyhydric phenol compounds include natural tannins and synthetic tannins such as sulfonates of phenol-formaldehyde resins, such as novolac and resol types.
• These compounds have an affinity for amino groups, so in addition to physical adhesion, they also adhere chemically to the fiber surface, making them particularly suitable for use with polyamide fibers. However, they can also adhere chemically and physically to the surface of other synthetic fibers such as polyester fibers and polypropylene fibers, depending on their chemical affinity, forming a film. This film improves the adhesion of the resin film, and because the resin film adheres uniformly to the fiber surface, it also improves water repellency.
• the method of attaching the sulfone group-containing compound or polyhydric phenol-based compound to the fiber is not particularly limited, but is preferably to immerse the fiber substrate in an aqueous solution containing the sulfone group-containing compound or polyhydric phenol-based compound (hereinafter referred to as pretreatment), preferably 1% to 10% by mass in solids relative to the mass of the fiber substrate before treatment, more preferably about 2% to 5% by mass. If it is less than 1% by mass, the effect is not fully exerted, and if it exceeds 10% by mass, the texture tends to become hard. In order to obtain the effect, it is preferable to adjust the pH of the pretreatment liquid to 2 to 6.
• an acid such as acetic acid, maleic acid, hydrochloric acid, or sulfuric acid can be used, and is not particularly limited.
• the bath ratio (mass ratio) of the fiber substrate to the pretreatment liquid is not particularly limited, but it is preferable that the mass of the pretreatment liquid is in the range of 10 to 50 for 1 mass of the fiber substrate.
• the pretreatment temperature is preferably 40°C to 100°C, more preferably 50°C to 90°C, and the treatment time is preferably 10 minutes to 60 minutes.
• Synthetic fibers used in the present invention include polyamide fibers, polyester fibers, acrylic fibers, polyolefin fibers, polyvinyl chloride fibers, polyurethane elastic fibers, etc.
• polyamide fibers or polyester fibers are preferable.
• Polyester fibers include aromatic polyester fibers such as polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate, aromatic polyester fibers copolymerized with aromatic polyester and a third component such as isophthalic acid, isophthalic acid sulfonate, adipic acid, and polyethylene glycol, aliphatic polyester fibers such as polylactic acid, and polyester fibers made of a mixture of multiple types of polyesters listed above.
• Polyamide fibers include polyamide fibers such as nylon 6 and nylon 66.
• Acrylic fibers include acrylic fibers such as polyacrylonitrile, and polyolefin fibers include polyolefin fibers such as polyethylene and polypropylene, and polyvinyl chloride fibers.
• Polyurethane elastic fibers may be compounded with these fibers.
• the fiber substrate used in the present invention may be in the form of a fabric, such as a woven fabric, knitted fabric, or nonwoven fabric, using the synthetic fibers described above, but from the viewpoint of water repellency, a woven fabric is preferred.
• the water-repellent fiber structure of the present invention has an air permeability in the range of 0.1 cm 3 /cm 2 /sec to 15 cm 3 /cm 2 /sec. If it is less than 0.1 cm 3 /cm 2 /sec, it becomes easily stuffy, and if it is more than 15 cm 3 /cm 2 /sec, the voids become large and sufficient water repellency cannot be obtained.
• the water-repellent fiber structure of the present invention has an air permeability of preferably 0.1 cm 3 /cm 2 /sec to 15.0 cm 3 /cm 2 /sec, more preferably 0.2 cm 3 /cm 2 / sec to 10.0 cm 3 /cm 2 /sec. These air permeabilities can be achieved by controlling not only the total fineness and density (number of threads per unit length) of the fibers used, but also the amount of the acrylic acid compound and the isocyanate compound added.
• a fiber structure having a resin coating attached to the surface of a fiber substrate containing synthetic fibers must be substantially free of elemental fluorine.
• substantially free of elemental fluorine here means that the fluorine content is 25 ng/g or less when measured by combustion ion chromatography.
• a fluorine content of 25 ng/g or less means that the fluorine content is below the detection limit of the AQF-100 and GA-100 (manufactured by Mitsubishi Chemical) systems used in the combustion ion chromatography measurement method described below.
• the water-repellent fiber structure of the present invention has excellent water repellency and durability, and therefore can be suitably used for general clothing, work uniforms, industrial materials, etc.
• it is suitable for use in textile products such as outerwear and bedding, specifically, down linings, coats, blousons, windbreakers, blouses, dress shirts, skirts, slacks, gloves, hats, curtains, and tents, as well as for non-clothing applications.
• high water repellency is required for down jackets and windbreakers, and for these applications, high density fabrics using fine fibers are suitable because they need to prevent down from coming off and are windproof.
• fine fibers for high density fabrics it is preferable to use fabrics with a total fiber size of 5 decitex to 55 decitex and a single fiber size of 0.4 decitex to 2.2 decitex.
• the examples of the present invention are not limited to the following examples.
• the measurement methods and evaluation methods in the examples of the present invention were as follows.
• the laundry was washed according to the method specified in Appendix F, Table F.1-C of JIS L 1930:2014 "Home Laundry Test Method for Textile Products", C4M. Specifically, the laundry was washed in a washing machine specified in Appendix E of JIS L1930:2014 "Home Laundry Test Method for Textile Products", with the mass of the laundry being 2.0 ⁇ 0.1 kg, 40 L of water at 40 ⁇ 3°C was added so that the bath ratio (mass ratio) was 1:20, a weak alkaline synthetic detergent was added and dissolved, and the laundry was washed for 6 minutes. The laundry was then drained, dehydrated for 3 minutes, and new water was added so that the bath ratio was 1:20, and rinsed for 2 minutes.
• Base fabric 1 A polyester fabric was prepared using 50 decitex, 72 filament polyethylene terephthalate yarn for the warp and 50 decitex, 72 filament polyethylene terephthalate yarn for the weft, and the fabric was refined and dyed in the usual manner to obtain a warp density of 152 threads/2.54 cm and a weft density of 119 threads/2.54 cm, which was used as base fabric 1.
• Base fabric 2 A nylon fabric was prepared using 20 decitex, 24 filament nylon 66 processed yarn as the warp and 30 decitex, 68 filament nylon 66 processed yarn as the weft. The fabric was then refined and dyed in the usual manner to produce a vertical density of 186 threads/2.54 cm and a horizontal density of 160 threads/2.54 cm, which was used as base fabric 2.
• Base fabric 3 A nylon fabric was prepared using 70 decitex, 48 filament nylon 66 raw silk as the warp and 160 decitex, 96 filament nylon 66 processed yarn as the weft. The fabric was then refined and dyed in the usual manner to produce a fabric with a warp density of 143 threads/2.54 cm and a weft density of 50 threads/2.54 cm, which was used as base fabric 3.
• the obtained base fabrics 1 to 3 were scoured with an open soaper (90°C), then intermediately set with a pin tenter, and dyed black with a jet dyer at 170°C for 30 seconds.
• Example 1 to 4 dried fabric was used, while for Examples 5 to 8 and Comparative Example 3, after dyeing, the same jet dyeing machine was used, and the bath ratio was adjusted to 1:20 with a processing solution containing 5% owf of Nylonfix 501 (a polyhydric phenol condensate manufactured by Senka Co., Ltd.), and the temperature was raised from room temperature to 80°C at a rate of 2°C/min, and the fabric was fixed in the bath for 30 minutes. The temperature was then lowered to 50°C, and the liquid was discharged in order, and the fabric was washed with water, dehydrated, and then dried at 140°C using a pin tenter.
• the obtained base fabrics 1 to 3 were designated as test base fabrics 1 to 3, respectively.
• Test fabric 1 was immersed in the emulsion liquid shown in Table 1, squeezed with a mangle, dried at 140° C. for 40 seconds using a pin tenter, and cured at 170° C. for 60 seconds. The squeeze rate of the mangle was 66%. Then, the fabric was calendered at 170° C. for 50 seconds.
• the water repellency, fluorine compound content, and air permeability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 1.
• the resulting treated fabric showed high water repellency before and after washing, and was a fiber structure that exhibited excellent water repellency and washing durability.
• Test fabric 2 was immersed in the emulsion liquid shown in Table 2, squeezed with a mangle, dried at 140° C. for 40 seconds using a pin tenter, and cured at 170° C. for 60 seconds. The squeeze rate of the mangle was 75%. Then, the fabric was calendered at 170° C. for 50 seconds.
• the water repellency, fluorine compound content, and air permeability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 2.
• the resulting treated fabric showed high water repellency before and after washing, and was a fiber structure that exhibited excellent water repellency and washing durability.
• Test fabric 3 was immersed in the emulsion liquid shown in Table 2, squeezed with a mangle, dried at 140° C. for 40 seconds using a pin tenter, and cured at 170° C. for 60 seconds. The squeeze rate of the mangle was 75%.
• the water repellency, fluorine compound content, and air permeability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 2.
• the resulting treated fabric showed high water repellency before and after washing, and was a fiber structure that exhibited excellent water repellency and washing durability.
• Test fabric 1 was immersed in the emulsion liquid shown in Table 3, and then processed in the same manner as in Example 1.
• the water repellency, fluorine compound content, and breathability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 3.
• the resulting treated fabric was a fiber structure that exhibited excellent water repellency.
• Test fabric 1 was immersed in the emulsion liquid shown in Table 3, squeezed with a mangle, dried at 140° C. for 40 seconds using a pin tenter, and cured at 170° C. for 60 seconds. The squeeze rate of the mangle was 66%. Then, the fabric was calendered at 170° C. for 50 seconds.
• the water repellency, fluorine compound content, and air permeability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 3.
• the resulting treated fabric showed high water repellency before and after washing, and was a fiber structure that exhibited excellent water repellency and washing durability.
• Test fabric 1 was immersed in the emulsion liquid shown in Table 4, squeezed with a mangle, dried at 140° C. for 40 seconds using a pin tenter, and cured at 170° C. for 60 seconds. The squeeze rate of the mangle was 66%. Then, the fabric was calendered at 170° C. for 50 seconds.
• the water repellency, fluorine compound content, and breathability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 4.
• the water repellency of the resulting treated fabric decreased after washing, and it was not a fiber structure that exhibited sufficient washing durability.
• Test fabric 2 was immersed in the emulsion liquid shown in Table 4, squeezed with a mangle, dried at 140° C. for 40 seconds using a pin tenter, and cured at 170° C. for 60 seconds. The squeeze rate of the mangle was 75%. Then, the fabric was calendered at 170° C. for 50 seconds.
• the water repellency, fluorine compound content, and breathability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 4.
• the water repellency of the resulting treated fabric decreased after washing, and it was not a fiber structure that exhibited sufficient washing durability.
• Test fabric 1 was immersed in the emulsion liquid shown in Table 5, squeezed with a mangle, dried at 140° C. for 40 seconds using a pin tenter, and cured at 170° C. for 60 seconds. The squeeze rate of the mangle was 66%. Then, the fabric was calendered at 170° C. for 50 seconds.
• the water repellency, fluorine compound content, and breathability of the resulting treated fabric were measured before and after washing, and the results are shown in Table 5.
• the water repellency of the resulting treated fabric decreased before and after washing, and it was not a fiber structure that exhibited sufficient washing durability.

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• 2024
  • 2024-06-13 WO PCT/JP2024/021498 patent/WO2024262406A1/ja not_active Ceased
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