WO2015184400A1 - Deodorant fabric - Google Patents

Deodorant fabric Download PDF

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Publication number
WO2015184400A1
WO2015184400A1 PCT/US2015/033397 US2015033397W WO2015184400A1 WO 2015184400 A1 WO2015184400 A1 WO 2015184400A1 US 2015033397 W US2015033397 W US 2015033397W WO 2015184400 A1 WO2015184400 A1 WO 2015184400A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic yarn
polyurethane elastic
fabric
polyurethane
deodorant
Prior art date
Application number
PCT/US2015/033397
Other languages
French (fr)
Inventor
Katsuya Suzuki
Tatsuaki UEBAYASHI
Toshihiro Tanaka
Original Assignee
Invista North America S.A R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=54699934&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2015184400(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Invista North America S.A R.L. filed Critical Invista North America S.A R.L.
Priority to US15/314,538 priority Critical patent/US20170096772A1/en
Priority to KR1020167035136A priority patent/KR20170008272A/en
Priority to CN201580028095.0A priority patent/CN106687631A/en
Publication of WO2015184400A1 publication Critical patent/WO2015184400A1/en

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/165—Odour absorbing, deodorizing ability
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/10—Clothing
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/08—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated carboxylic acids or unsaturated organic esters, e.g. polyacrylic esters, polyvinyl acetate
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2501/00—Wearing apparel
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2509/00—Medical; Hygiene

Definitions

  • the present invention relates to a fabric combining a polyester fiber and a polyurethane elastic yarn that are excellent in deodorizing effects for sweat odor and the distinctive body odor of elderly.
  • Patent Document 1 proposes a post-processing method for a post-processing method.
  • Patent Document 2 a method incorporating a deodorant directly into the elastic fibers that provide elasticity has been proposed.
  • Inorganic deodorants such as active carbon, silver-containing zeolites, zeolite, zinc oxide fine particles, and metal phosphates are used therefor. These inorganic deodorants are excellent in weather resistance and chemical resistance, and also have an excellent characteristic in which acute oral toxicity is low. In addition, because heat resistance is high, the deodorizing effects are not impaired even during the manufacturing or processing of the elastic fibers.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2012-140731
  • Patent Document 2 Re-publication of PCT International Publication No. 2012-053401 SUMMARY OF THE INVENTION
  • the ratio of elastic fibers in the fabric (hereinafter, noted as the mixing ratio) must be significantly high, and therefore, there have been issues in that desired texture and physical properties cannot be obtained.
  • An object of the present invention is to provide a fabric having elasticity with excellent deodorizing effects for sweat odor and distinctive body odor of elderly.
  • the present invention in order to solve the problem described above uses any of the following means:
  • a fabric having elasticity with excellent deodorizing effects for sweat odor and distinctive body odor of elderly can be obtained. Therefore, a garment using such fabric can have an excellent deodorizing effect for sweat odor and distinctive body odor of elderly.
  • the present invention is achieved by obtaining a fabric having a specific mass per unit area containing polyurethane elastic yarn and having excellent deodorizing effects for sweat odor and distinctive body odor of elderly by combining cationic dyeable polyester fibers and polyurethane elastic yarn having an ammonia gas deodorant ratio of greater than or equal to a specified value so that a mixing ratio of the polyurethane elastic yarn is in a specified range within the fabric.
  • the fabric of the present invention is a fabric containing polyurethane elastic yarn and cationic dyeable polyester fiber.
  • the deodorizing effects effective for acetic acid gas, isovaleric acid, nonenal that are originally possessed by polyurethane elastic yarn are obtained by containing the polyurethane elastic yarn where the mixing ratio within the fabric is 5 to 30 wt.%.
  • the deodorizing effect for ammonia gas is demonstrated by cationic dye exhaustion seating by combining the cationic dyeable polyester fibers to become a fabric having deodorizing effects with good balance against sweat odor and distinctive body odor of elderly. It is preferred that the mixing ratio of the cationic dyeable polyester fiber within a fabric is greater than or equal to 40 wt.% to demonstrate the deodorizing effect for ammonia gas, and it is preferred that the upper limit is less than or equal to 95 wt.% from the viewpoint of demonstrating the deodorizing effects for acetic acid gas, isovaleric acid, and nonenal. Note that, when a mixing ratio within the fabric of the cationic dyeable polyester fiber is 40 wt.% or less, the dyeing is preferred to be performed with a cationic dye.
  • An amount of polyurethane elastic yarn and cationic dyeable polyester fiber that is sufficient to demonstrate the deodorizing effects can be ensured by having a weight of 10 cm x 10 cm to be greater than or equal to 1 g. Further, from the viewpoint of feeling and texture as use in a garment or the like, it is preferred that the weight of 10 cm x 10 cm is less than or equal to 7 g.
  • the deodorant ratio for ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% for both after washing treatments of 0 times and 10 times.
  • the deodorant ratio for ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% for both after washing treatments of 0 times and 10 times.
  • the detector tube method defined by Japan Textile Evaluation Technology Council is a method for measuring in a prescribed sample of how much ammonia gas is reduced in 2 hours, and the deodorant ratio of ammonia gas obtained by applying this method to 0.15 g of polyurethane elastic yarn becomes an indicator of the deodorant ratio for ammonia gas contributed by the polyurethane yarn itself in the fabric.
  • the method for obtaining the polyurethane elastic yarn having such ammonia gas deodorant ratio is not particularly limited; however, those containing an inorganic deodorant having an ammonia gas deodorizing effect may be preferably used.
  • the deodorizing characteristic for ammonia gas is allowed to be improved by containing an inorganic deodorant having deodorizing effects for ammonia gas without obstructing the deodorant power for acetic acid gas, nonenal gas, and isovaleric acid gas.
  • zirconium, titanium, aluminum, metallic phosphates composed of calcium, zinc containing silica, or the like may be used.
  • at least one selected from a group composed of zirconium phosphate, titanium phosphate, or dihydrogen aluminum tripolyphosphate having a layer structure is preferable to use for the object of a deodorizing characteristic for ammonia, and particularly preferred is a zirconium phosphate.
  • the metallic phosphate, such as zirconium phosphate is preferably one that does not carry a metallic ion such as a silver ion or copper ion for the object of a deodorizing characteristic for ammonia.
  • the content amount of the inorganic deodorant is in a range from 0.5 to 10 wt.% with respect to the total mass of the polyurethane elastic yarn.
  • the content of the inorganic deodorant is less than 0.5 wt.%, a sufficient ammonia gas deodorizing characteristic may hardly be obtained when using as a fabric. It is more preferable that the content is greater than or equal to 1.5 wt.%. Conversely, when the content exceeds 10 wt.%, deterioration of the elastic properties or increasing cost may occur. It is more preferable that the content is less than or equal to 7.0 wt.%.
  • the content is particularly preferable in a range from 1.5 to 5.0 wt.%.
  • the inorganic deodorant in the present invention is preferably powder having less than or equal to 3.0 ⁇ of an average primary particle size from the viewpoint of preventing the spinning solution clogging in the spinneret, and more particularly less than or equal to 1.5 ⁇ . Further, when the average primary particle size is less than 0.05 ⁇ , the cohesive force is increased and causes difficulty in mixing uniformly in the spinning solution, and therefore, the average primary particle size is preferred to be greater than or equal to 0.05 ⁇ from the viewpoint of dispersibility.
  • the polyurethane elastic yarn used in the present invention may contain a medical agent such as a light resistant agent, an antioxidant, a pigment, or the like in addition to the inorganic deodorant.
  • a medical agent such as a light resistant agent, an antioxidant, a pigment, or the like in addition to the inorganic deodorant.
  • a medical agent such as a light resistant agent, an antioxidant, a pigment, or the like in addition to the inorganic deodorant.
  • hindered phenol based drugs such as "Sumilizer” (registered trademark) GA-80 manufactured by Sumitomo Chemical Co., Ltd. and BHT as a light resistance agent and antioxidant
  • benzotriazole system such as various "Tinuvins” (registered trademark) manufactured by Ciba Geigy
  • benzophenone-based drugs such as various "Tinuvins" (registered trademark) manufactured by Ciba Geigy, benzophenone-based drugs
  • phosphorus-based drugs such as "Sumilizer” (registered trademark) P-16 manufactured by Sumitomo Chemical Co., Ltd., various hindered amine-based drugs, various pigments such as iron oxide, titanium oxide, inorganic materials such as zinc oxide, cerium oxide, magnesium oxide, calcium carbonate, carbon black, fluorine-based or silicon-based resin powders, metallic soaps such as magnesium stearate, lubricants such as mineral oil, various antistatic agents such as cerium oxide, betaine, or phosphoric acid are also preferred to be contained, and those are preferably reacted with a polymer.
  • Sudilizer registered trademark
  • P-16 manufactured by Sumitomo Chemical Co., Ltd.
  • various hindered amine-based drugs various pigments such as iron oxide, titanium oxide, inorganic materials such as zinc oxide, cerium oxide, magnesium oxide, calcium carbonate, carbon black, fluorine-based or silicon-based resin powders, metallic soaps such as magnesium stearate, lubricants such as mineral oil,
  • nitric oxide scavengers such as HN-150 manufactured by Japan Hydrazine Co., Ltd.
  • thermal oxidation stabilizers such as "Sumilizer” (registered trademark) GA-80 manufactured by Sumitomo Chemical Co., Ltd.
  • light stabilizers such as "Sumisorb” (registered trademark) 300#622 are also preferably used.
  • the cationic dyeable polyester fiber used in a fabric of the present invention will be described below.
  • the cationic dyeable polyester fiber is a fiber obtained by copolymerizing a compound containing a metallic sulfonate group in the polyester molecular structure, and the definition in the present invention is the same.
  • Such cationic dyeable polyester fiber may be available in various types in which a type of compound containing a metallic sulfonate group or that in which the rate of copolymerization is different due to increasing of staining properties, improvement of texture, or the like; however, the cationic dyeable polyester fiber used in the present invention can be used without being particularly limited as long as the staining properties are exhibited for normal cationic dye.
  • the fabric in the present invention is preferable to have a mixing ratio of the cationic dyeable polyester fiber greater than or equal to 40 wt.% in order to demonstrate the deodorizing effects with a proper balance, a mixing ratio of the polyurethane elastic yarn greater than or equal to 5 wt.% and less than 30 wt.%, and a mass of 10 cm x 10 cm greater than or equal to 1 g.
  • a knitted fabric may be a regular polyester fiber or a combination of polyamide fiber, cotton, or the like.
  • the l nitted fabric also is not particularly limited as long as the condition above is satisfied, and the knitted fabric may be made in any method such as circular knit, warp knit, tricot, raschel knit, or used as a covering finished yarn.
  • the fabric in the present invention is stained by cationic dye.
  • the cationic dye used for staining in such case is not particularly limited even though there are a variety of types such as polymethins, azos, azamethines, anthraquinones, thiazoles, or the like, and a dye that is generally commercially available can be used under normal conditions.
  • the cationic dye contains a counter ion, and a calboxylate anion, a sulfonate anion, a sulfate ester anion, phosphate ester anion, or the like to demonstrate fabric deodorizing effects, particularly preferred is a sulfonate anion.
  • softening finish, antibacterial treatment, water absorption treatment, water repellent treatment, antistatic treatment, or the like may be provided properly.
  • the fabric of the present invention is a knitted fabric.
  • a knitted fabric is preferable where a mixing ratio of the cationic dyeable polyester fiber is greater than or equal to 40 wt.%, a mixing ratio of the polyurethane elastic yarn is greater than or equal to 5 wt.% and less than 30 wt.%, and a mass of 10 cm x 10 cm is greater than or equal to 1 g, and as long as satisfying the configuration, it may be a combination of a regular polyester fiber, polyamide fiber, cotton or the like other than the polyurethane elastic yarn or cationic dyeable polyester fiber.
  • polyurethane elastic yarn used in the present invention will be described below (hereinafter, the polyurethane configuring the polyurethane elastic yarn used in the present invention will be abbreviated as polyurethane used in the present invention).
  • the polyurethane used in the present invention may be anything and not particularly limited as long as a polymerdiol and a diisocyanate are the starting materials.
  • the synthesis method also is not particularly limited. That is, for example, polyurethane-urea composed of polymer diol, diisocyanate, and low molecular weight diamine, or polyurethane urethane composed of polymer diol, diisocyanate, and low molecular weight diol may be used. Also, polyurethane-urea in which a compound having a hydroxyl group and an amino group as chain extenders may be used.
  • polyethers for the polymer diol, polyethers, polyester diols, polycarbonate diols, or the like are preferred.
  • a polyether diol is particularly preferred to be used from the viewpoint of providing flexibility and elasticity to yarn.
  • polyether diol it is preferred that, for example, polyethylene oxide, polyethylene glycol, polyethylene glycol derivatives, polypropylene glycol, polytetramethylene ether glycol (hereinafter, abbreviated as PTMG), modified PTMG (hereinafter, abbreviated as 3M-PTMG) that is a copolymer of tetrahydrofuran (hereinafter, abbreviated as THF) and 3-methyl tetrahydrofuran, a modified PTMG that is a copolymer of THF and 2,3-dimethyl THF, polyol having a side chain on both sides disclosed in Patent No.
  • polyether diols may be of one kind or two or more kinds mixed or copolymerized.
  • butylene adipate, polycaprolactone diol, polyester diols such as polyester polyol having a side chain disclosed in JP Unexamined Patent Application Publication No. S61-26612 and the like, or polycarbonate diols disclosed in JP Unexamined Patent Application Publication No. H02-289616, or the like is used.
  • polymer diols may be used solely, or two or more types may be mixed or copolymerized.
  • a number average molecular weight is preferably between 1000 and 8000, and more preferably between 1500 and 6000 from the viewpoint of obtaining elasticity, strength, heat resistance, and the like.
  • the polyol within the range of the number average molecular weight, an elastic yarn that is excellent in elasticity, strength, strength of elastic recovery, and heat resistance can be obtained easily.
  • the number average molecular weight is measured by GPC, and is converted by polystyrene (the same manner is applied for other ingredients and polymers below).
  • an aromatic diisocyanate such as diphenylmethane
  • MDI diisocyanate
  • tolylene diisocyanate 1,4-diisocyanate benzene
  • xylylene diisocyanate 1,6-naphthalene diisocyanate, or the like
  • an alicyclic diisocyanate for example, methylenebis (cyclohexyl isocyanate) (hereinafter, abbreviated as H12MDI), isophorone diisocyanate, methyl cyclohexane 2,4-diisocyanate, methyl cyclohexane 2,6-diisocyanate, cyclohexane 1,4-diisocyanate, hexahydroxylene diisocyanate, hexahydrotolylene diisocyanate, octahydro 1,5 -naphthalene diisocyanate, or the like is preferred.
  • the aliphatic diisocyanate can be used effectively particularly when suppressing the yellow discoloration of the polyurethane elastic yarn.
  • these diisocyanates may be used solely or in conjunction with two or more.
  • At least one type of chain extender is used when synthesizing the poiyurethane from among low molecular weight diols and low molecular weight diamines in which the molecular weight is less than or equal to 300. Note that, it may even have a hydroxyl group and an amino group such as ethanolamine.
  • Preferred low molecular weight diamines include, for examine, ethylenediamine, 1,2-propanediamine, 1,3-propanediamine, hexamethylenediamine, p-phenylenediamine, p-xylylenediamine, m-xylylenediamine, ⁇ , ⁇ ' -methyl enedianiline, 1,3-cyclohexyldiamine, hexahydromethaphenilenediamine, 2-methyl pentamethylenediamine, bis(4-aminophenyl) phosphine oxide, or the like. It is preferable that one more of these are used.
  • Ethylenediamine is particularly preferred.
  • ethylenediamine By using ethylenediamine, a yarn with excellent elasticity, strength of elastic recovery, and heat resistance can be obtained easily.
  • Triamine compounds such as, for example, diethylene triamine that can form a cross-linked structure may be added to these chain extenders to an extent so as not to lose the efficacy.
  • ethylene glycol, 1, 3 -propanediol, 1, 4-butanediol, bis hydroxyethoxybenzene, bis hydroxy ethylene terephthalate, 1-methyl-l, 2-ethanediol, or the like is a typical example. It is preferable that one or more types are used from among these. Ethylene glycol, 1 , 3 -propanediol, and 1, 4-butanediol are particularly preferred. Use of these enables the heat resistance to be further increased as poiyurethane of a diol extension, and a higher strength yarn can be obtained.
  • the molecular weight of the polyurethanes used in the present invention is preferable in the range between 30000 and 150000 as number average molecular weights from the viewpoint of obtaining fibers with durability and higher strengths.
  • terminal sequestrants include monoamines such as dimethylamine, diisopropylamine, ethylmethylamine, diethylamine, methylpropylamine,
  • the polyurethane elastic yarn used in the present invention is spun by containing an inorganic deodorant (for example, a metal phosphate such as zirconium phosphate) and a quaternary ammonium salt antibacterial or the like if necessary into the spinning solution including polyurethane obtained by using a polymer diol and a diisocyanate as starting materials. It is preferred that the polyurethane solution is prepared in advance and the inorganic deodorant is then added thereto from the standpoint of stabilizing the inorganic deodorant (for example, a metal phosphate such as zirconium phosphate) and a quaternary ammonium salt antibacterial or the like if necessary into the spinning solution including polyurethane obtained by using a polymer diol and a diisocyanate as starting materials. It is preferred that the polyurethane solution is prepared in advance and the inorganic deodorant is then added thereto from the standpoint of stabilizing the
  • the manufacturing method for the polyurethane that is a solute may be either a melt polymerization process or a solution polymerization process, and may even be another method. Of them, the solution polymerization process is more preferred. In the case of a solution polymerization process, foreign matter such as a gel are rarely generated in the polyurethane, spinning is easier, and a polyurethane elastic yarn with a low fineness is easy to obtain.
  • the polyurethane of particular preferable use in the present invention includes those that are synthesized by using PTMG where a number average molecular weight is between 1500 and 6000 as the polymer diol, MDI as the diisocyanate, and at least one of 1, 2-prooane diamine, 1, 3 -propane diamine, hexamethylene diamine, or
  • the polyurethane used in the present invention can be obtained by synthesizing using the ingredients described above in a solvent, for example, N, N-dimethylacetamide (hereinafter, abbreviated as DMAc), N, N-dimethylformamide (hereinafter, abbreviated as DMF), dimethyl sulfoxide (hereinafter, abbreviated as DMSO), N-methyl-2-pyrrolidone (hereinafter, abbreviated as NMP), or a solvent having the above as the primary ingredient.
  • a solvent for example, N, N-dimethylacetamide (hereinafter, abbreviated as DMAc), N, N-dimethylformamide (hereinafter, abbreviated as DMF), dimethyl sulfoxide (hereinafter, abbreviated as DMSO), N-methyl-2-pyrrolidone (hereinafter, abbreviated as NMP), or a solvent having the above as the primary ingredient.
  • a solvent for example, N, N
  • Particularly preferred methods which may be used are, for example, the so-called one-shot process in which the polyurethane is made by putting all materials into such solvent, dissolving them, and performing the reaction by heating the solution to a suitable temperature, or a method in which the polyurethane is made by first melting and reacting the polymer diol and diisocyanate and then dissolving the reaction product in a solvent and reacting the chain extender described above or the like.
  • a representative method may be accomplished by controlling the polymer diol, MDI, type of diol and ratio.
  • polymer diol polymer diol
  • MDI polymer diol
  • type of diol polyurethane with a high-temperature melting point
  • ratio ratio of the polymer diol
  • polyurethane with a high-temperature melting point can be obtained by relatively increasing the ratio of MDI.
  • polyurethane with a high-temperature melting point can be obtained by relatively reducing the ratio of the polymer diol.
  • an inorganic deodorant such as a metal , phosphate in such polyurethane solution.
  • any method may be used.
  • various means can be used such as a method using a static mixer, a method by stirring, a method by a Homo Mixer, a method using a twin-screw extruder, or the like.
  • an inorganic deodorant is contained in the polyurethane elastic yarn in a specified range; however, it is preferred to disperse the inorganic deodorant evenly into the polyurethane spinning solution prior to spinning, and the inorganic deodorant above is preferably added to the polyurethane spinning solution that is a solvent of DMF, DMAc, or the like, and then stirred and mixed so as to disperse evenly. More specifically, it is preferable that the inorganic deodorant is prepared to be a dispersion solution where DMF, DMA, or the like is dispersed in advance, and the dispersion solution is mixed in the polyurethane spinning solution.
  • the same solvent as the polyurethane solution for the dispersion medium used in the dispersion solution of the inorganic deodorant from the standpoint of performing adding evenly to the polyurethane solution.
  • a medical agent such as a light resistance agent, an oxidation inhibitor, or a pigment may be added at the same time.
  • the polyurethane yarn used in the present invention can be obtained by spooling the spinning solution that is configured as described above, for example, by dry spinning, wet spinning or melt spinning. Among them, the dry spinning is preferred from the standpoint of stability in spinning in all finenesses from very fine to thick yarn.
  • the fineness and cross-sectional shape of the polyurethane elastic yarn used in the present invention has no particular limitation.
  • the cross-sectional shape of the yarn may be a circular shape, or a flat shape.
  • the dry spinning method is also not particularly limited, and the spinning method may be suitably selected according to the spinning conditions suitable to the desired characteristics and the spinning equipment.
  • washing liquid was prepared where 40 ml of the JAFET standard detergent
  • washing 10 times means repeating 10 times this series of operations
  • washing 50 times means repeating 50 times this series of operations.
  • a deodorizing test was conducted based on the standards of Deodorant Processed Textiles Certification Criteria (published by: Japan Textile Evaluation Technology Council, product authentication department, issued on September 1, 2002), and the deodorizing effect evaluation of odorous components was conducted by an equipment test as follows.
  • the sample (polyurethane elastic yarn 0.15 g) was placed into a Tedlar bag.
  • test gas ammonia gas: 100 ppm, acetic acid gas: 30 ppm
  • concentration of the gas remaining after two hours was measured by the detector tube corresponding to the ingredient (manufactured by GASTEC Co.) to be the residual gas concentration of the sample test.
  • the gas filling amount was 3L
  • the diluent gas was dry air or nitrogen gas.
  • Deodorizing Ratio (%) iiller , : - x 100
  • the deodorizing effect evaluation for odorous components was conducted in the same manner as the "Deodorizing Effects of Polyurethane Elastic Yarn" except using a 10 cm x 10 cm fabric in place of 0.15 g of the polyurethane elastic yarn to calculate the deodorizing ratio.
  • the fabric deodorant effect is preferably 70% or greater in both ammonia and acetic acid in washing durability after washing 10 times, and further preferably 70% in both ammonia and acetic acid after washing 50 times.
  • DMAc solution 35 wt.% of polyurethane-urea polymer composed of ethylenediamine, MDI, and PTMG having a number average molecular weight of 1800, and diethylamine as the terminal sequestrant was prepared.
  • a polyurethane solution DuPont Co. "Methacrol”TM 2462D
  • a condensation polymer of p-cresol and divinylbenzene DuPont Co. "Methacrol”TM 2390D
  • a circulation knit was made by a typical method for a fabric by using the polyurethane elastic yarn and cationic dyeable polyester fiber (type WFOF: manufactured by Toray Co, 84 decitex, 72 filament).
  • the dyeing process was performed by using the obtained circular knit fabric as follows to obtain the dyed knitted fabric in which the mixing ratio of the polyurethane elastic yarn is 9 wt.%, and the mass of 10 cm x 10 cm was 1.3 g.
  • %owf shows a percentage of the mass of dyes with respect to the fiber mass in the dyebath.
  • a circular knitted fabric was prepared using the polyurethane elastic yarn used in
  • Example 1 and dying treatment was conducted according to the following method replacing the cationic polyurethane elastic yarn (Tetoron, Toray Co., 84 decitex and 72 filament) with a normal polyester fiber (Tetoron, Toray (Inc.), 84 decitex and 72 filament).
  • the deodorizing effects were measured on the knitted fabric after the preset treatment in (2), and each knitted fabric after dyeing treatment in (4) was completed.
  • tripolyphosphate deodorant "K-FRESH” manufactured by TAYCA Co. (registered trademark) #100P (average primary particle size 1.0 ⁇ ) was dispersed in DMAc by a homomixer to make a dihydrogen aluminum tripolyphosphate dispersion B2 (35 wt.%).
  • a ratio of 96 wt.% of the polymer solutions Al and 4 wt.% of dihydrogen aluminum tripolyphosphate dispersion B2 were uniformly mixed to malce the spinning solution C2, this was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament thread with the dihydrogen aluminum tripolyphosphate content of 4 wt.% was obtained.
  • the deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
  • a circular knitted fabric and the knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1 , and the evaluation was conducted on these.
  • an inorganic deodorant "Shu-Clenase” (registered trademark) KD-211 manufactured by Rasa Industries, Ltd. was dispersed in DMAc by a homomixer to make a diepersion B3 (35 wt.%).
  • a ratio of 96 wt.% of the polymer solutions Al and 4 wt.% of dispersion liquid B3 were uniformly mixed to make the spinning solution C3, this was dry- spun in the same manner as Example 1 , and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament thread with the inorganic deodorant content of 4 wt.%> was obtained.
  • the deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
  • a circular knitted fabric and a knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1 , and the evaluation was conducted on these.
  • the polymer solutions Al and Bl were uniformly mixed at 99 wt.%> and 1 wt.% to make the spinning solution C4. This was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament with the inorganic deodorant content of 1 wt.% was obtained.
  • the deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
  • a circular knitted fabric and a knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1, and the evaluation was conducted on these.
  • the spinning solution CI was dry-spun at a speed of 710 m/min. with a speed ratio of the godet rollers and the winder of 1.21, and 350 g of a wound polyurethane elastic yarn 44 decitex, 4 filament, with a inorganic deodorant content of 2 wt.% was obtained.
  • the deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
  • a two way tricot was then knitted as a fabric by a normal method using a cationic dyeable polyester fiber (type FS92: manufactured by Toray Co.) (mixing ratio 76%), and using the polyurethane elastic yarn (mixing rate 24%) of 44 decitex for a bag.
  • the dyeing process was performed by using the obtained two way tricot as follows to obtain the dyed knitted fabric in which the mixing ratio of the
  • polyurethane elastic yarn is 24 wt.%, and the mass of 10 cm x 10 cm was 1.88g.
  • Refining Process 2 g/L of anionic surfactant "Sunrnol” (registered trademark) BL650 (manufactured by Nikka Chemical Co., Ltd.) and 1500 ppm of EDTA-based sequestrant "Acromar” (registered trademark) DH 700 (manufactured by Nagase chemteX Co.) were added to soft water of total hardness 10 ppm to prepare a solution as the treatment solution, and treated at 80 °C for 20 minutes by using the treatment solution.
  • "Sunrnol” registered trademark
  • BL650 manufactured by Nikka Chemical Co., Ltd.
  • Acromar registered trademark
  • DH 700 manufactured by Nagase chemteX Co.
  • the deodorizing effects were measured on the knitted fabric after the preset treatment in (2), and each knitted fabric after dyeing in (3).
  • Example 1 The cationic dye used in Example 1 was altered to 1,
  • Example 1 The cationic dye used in Example 1 was altered to 1,
  • a knitted fabric that was a stained circular knitted fabric was prepared as the fabric in the same manner as Example 1 except using a fiber at a ratio of 40: 51 of the cationic dyeable polyester fiber and a regular polyester fiber (type W20F: manufactured by Toray Co., 84 decitex 72 filament) instead of the cationic dyeable polyester fiber (type WFOF:
  • Example 1 manufactured by Toray Co., 84 decitex 72 filament) used in Example 1, and the evaluation was conducted.
  • a circular knitted fabric and a knitted fabric dyed thereof were prepared as the fabric in the same manner as Example 1 except using a fiber at a ratio of 30: 61 of the cationic dyeable polyester fiber and a regular polyester fiber (type W20F: manufactured by Toray Co., 84 decitex 72 filament) instead of the cationic dyeable polyester fiber (type WFOF:
  • Example 10 manufactured by Toray Co., 84 decitex 72 filament) used in Example 1, and the evaluation was conducted. Each evaluation result is shown in Table 1 and Table 2.
  • Example 10
  • a circular knitted fabric and the knitted fabric dyed thereof were prepared as a fabric in the same manner as Example 8 except dyeing treatment was conducted in the same manner as in Comparative Example 1, and the evaluation was conducted on these.
  • the polymer solution Al was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament was obtained. Evaluation of the deodorizing effects for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A circular knitted fabric and the knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1, and the evaluation was conducted on these.
  • a ratio of 99.5 wt.% of the polymer solutions Al and 0.5 wt.% of the dispersion B3 was uniformly mixed to make the spinning solution C5. This was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament with the inorganic deodorant content of 0.5 wt.% was obtained.
  • the deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
  • a circular knitted fabric and the knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1 , and the evaluation was conducted on these.
  • the polymer solution Al was dry-spun in the same manner as Example 5, and 350g of a wound polyurethane elastic yarn 44 decitex, 4 filament was obtained.
  • the deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
  • a two way tricot and the dyed fabric thereof were then prepared as a fabric in the same manner as Example 5, and the evaluation was conducted on these.
  • This spinning solution C3 was dry-spun in the same manner as Example 5, and 350 of a wound polyurethane elastic yarn 44 decitex, 4 filament with the inorganic deodorant content of 4 wt.% was obtained. Evaluation of the deodorizing effects for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
  • a regular polyester fiber (type S962): manufactured by Toray Co.) (mixing ratio 76%) was used and a two way tricot was knitted by a normal method as a fabric by using the polyurethane elastic yarn of 44 decitex Imixing (ratio 24%) for a bag.
  • the dyeing process was performed as follows by using the obtained two way tricot to obtain the dyed knitted fabric in which the mixing ratio of the polyurethane elastic yarn is 24 wt.%, and the mass of 10 cm x 10 cm was 1.86 g.
  • Refining Process 2 g/L of anionic surfactant "Sunmol” (registered trademark) BL650 (manufactured by Nikka Chemical Co., Ltd.) and 1500 ppm of EDTA-based sequestrant "Acromar” (registered trademark) DH 700 (manufactured by Nagase chemteX Co.) were added to soft water of total hardness 10 ppm to prepare a solution as a treatment solution, and treated at 80 °C for 20 minutes by using the treatment solution.
  • Unmol registered trademark
  • BL650 manufactured by Nikka Chemical Co., Ltd.
  • Acromar registered trademark
  • DH 700 manufactured by Nagase chemteX Co.
  • a circular knitted fabric and the knitted fabric dyed thereof were prepared as a fabric in the same manner as comparative example 3 except changing the inorganic deodorant used in the comparative example 3 to 0.3 wt.%, and the evaluation was conducted on these.

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Abstract

To provide a fabric containing a polyester fiber and a polyurethane elastic yarn that are excellent in deodorant function of sweat odor and the distinctive body odor of elderly. A fabric that is a combined fabric including a polyurethane elastic yarn and a cationic dyeable polyester fiber where a deodorant ratio of ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% both after washing 0 times and 10 times, also a mixing ratio of the polyurethane elastic yarn is from 5 wt.% to 30 wt.%, and a mass of 10 cm x 10 cm is greater than or equal to 1 g.

Description

DEODORANT FABRIC
TECHNICAL FIELD
The present invention relates to a fabric combining a polyester fiber and a polyurethane elastic yarn that are excellent in deodorizing effects for sweat odor and the distinctive body odor of elderly.
RELATED ART
In recent years, stretch materials have been widely used in functional inner wear and undergarments due to increasing health consciousness. Particularly, a material combining polyester fibers that is excellent in fast-drying and durability has been preferred during the summer for inner wear and athletic fields.
Needs for deodorant for sweat odor and distinctive body odor of elderly are extremely high in these applications, and in order to provide such function conventionally,
functionalization has been proposed by a post-processing method (Patent Document 1).
Also, a method incorporating a deodorant directly into the elastic fibers that provide elasticity has been proposed (Patent Document 2). Inorganic deodorants such as active carbon, silver-containing zeolites, zeolite, zinc oxide fine particles, and metal phosphates are used therefor. These inorganic deodorants are excellent in weather resistance and chemical resistance, and also have an excellent characteristic in which acute oral toxicity is low. In addition, because heat resistance is high, the deodorizing effects are not impaired even during the manufacturing or processing of the elastic fibers.
DOCUMENTS OF THE RELATED ART Patent Documents
Patent Document 1 Japanese Unexamined Patent Application Publication No. 2012-140731
Patent Document 2 Re-publication of PCT International Publication No. 2012-053401 SUMMARY OF THE INVENTION
Problem to be Solved by the Invention
However, although a product with temporary deodorizing effects can be obtained by a post-processing method, there have been issues in that the texture may be damaged by a binder for adhering a functional agent to an elastic fabric, productivity is decreased due to a long manufacturing process, and deodorizing effects are deteriorated by washing repeatedly.
Further, when attempting to demonstrate the deodorizing effects by combining normal polyester fibers with elastic fibers incorporating a deodorant, the ratio of elastic fibers in the fabric (hereinafter, noted as the mixing ratio) must be significantly high, and therefore, there have been issues in that desired texture and physical properties cannot be obtained.
An object of the present invention is to provide a fabric having elasticity with excellent deodorizing effects for sweat odor and distinctive body odor of elderly.
MEANS FOR SOLVING THE PROBLEM
The present invention in order to solve the problem described above uses any of the following means:
(1) A fabric containing a polyurethane elastic yarn and a cationic dyeable polyester fiber where a mass of 10 cm x 10 cm is greater than or equal to 1 g, wherein the polyurethane elastic yarn has a deodorant ratio of ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% both after washing 0 times and 10 times, and a mixing ratio of the polyurethane elastic yarn is 5 to 30 wt.%.
(2) The fabric according to (1) wherein a mixing ratio within the fabric of the cationic dyeable polyester fiber is greater than or equal to 40 wt.%.
(3) The fabric according to (1) or (2) is stained by the cationic dye.
(4) The fabric according to any of (1) to (3), wherein the polyurethane elastic yarn contains an inorganic deodorant in a range of 0.5 to 10 wt.%.
EFFECT OF THE INVENTION
According to the present invention, a fabric having elasticity with excellent deodorizing effects for sweat odor and distinctive body odor of elderly can be obtained. Therefore, a garment using such fabric can have an excellent deodorizing effect for sweat odor and distinctive body odor of elderly.
Best Mode for Carrying Out the Invention
The present invention will be described below in further detail.
The present invention is achieved by obtaining a fabric having a specific mass per unit area containing polyurethane elastic yarn and having excellent deodorizing effects for sweat odor and distinctive body odor of elderly by combining cationic dyeable polyester fibers and polyurethane elastic yarn having an ammonia gas deodorant ratio of greater than or equal to a specified value so that a mixing ratio of the polyurethane elastic yarn is in a specified range within the fabric.
The fabric of the present invention is a fabric containing polyurethane elastic yarn and cationic dyeable polyester fiber. The deodorizing effects effective for acetic acid gas, isovaleric acid, nonenal that are originally possessed by polyurethane elastic yarn are obtained by containing the polyurethane elastic yarn where the mixing ratio within the fabric is 5 to 30 wt.%.
The deodorizing effect for ammonia gas is demonstrated by cationic dye exhaustion seating by combining the cationic dyeable polyester fibers to become a fabric having deodorizing effects with good balance against sweat odor and distinctive body odor of elderly. It is preferred that the mixing ratio of the cationic dyeable polyester fiber within a fabric is greater than or equal to 40 wt.% to demonstrate the deodorizing effect for ammonia gas, and it is preferred that the upper limit is less than or equal to 95 wt.% from the viewpoint of demonstrating the deodorizing effects for acetic acid gas, isovaleric acid, and nonenal. Note that, when a mixing ratio within the fabric of the cationic dyeable polyester fiber is 40 wt.% or less, the dyeing is preferred to be performed with a cationic dye.
An amount of polyurethane elastic yarn and cationic dyeable polyester fiber that is sufficient to demonstrate the deodorizing effects can be ensured by having a weight of 10 cm x 10 cm to be greater than or equal to 1 g. Further, from the viewpoint of feeling and texture as use in a garment or the like, it is preferred that the weight of 10 cm x 10 cm is less than or equal to 7 g.
In the polyurethane elastic yarn used in the present invention, the deodorant ratio for ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% for both after washing treatments of 0 times and 10 times. By using such polyurethane elastic yarn in a range of 5 to 30 wt.% for the mixing ratio in a fabric, the deodorizing effects originally possessed by the cationic dyeable polyester fiber for ammonia gas are complemented and the deodorizing effects possessed by polyurethane elastic yarn for acetic acid gas, isovaleric acid, and nonenal are fully demonstrated.
In the polyurethane elastic yarn used in the present invention, the deodorant ratio for ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% for both after washing treatments of 0 times and 10 times. The detector tube method defined by Japan Textile Evaluation Technology Council is a method for measuring in a prescribed sample of how much ammonia gas is reduced in 2 hours, and the deodorant ratio of ammonia gas obtained by applying this method to 0.15 g of polyurethane elastic yarn becomes an indicator of the deodorant ratio for ammonia gas contributed by the polyurethane yarn itself in the fabric. The method for obtaining the polyurethane elastic yarn having such ammonia gas deodorant ratio is not particularly limited; however, those containing an inorganic deodorant having an ammonia gas deodorizing effect may be preferably used. The deodorizing characteristic for ammonia gas is allowed to be improved by containing an inorganic deodorant having deodorizing effects for ammonia gas without obstructing the deodorant power for acetic acid gas, nonenal gas, and isovaleric acid gas.
For an inorganic deodorant, zirconium, titanium, aluminum, metallic phosphates composed of calcium, zinc containing silica, or the like may be used. Among them, at least one selected from a group composed of zirconium phosphate, titanium phosphate, or dihydrogen aluminum tripolyphosphate having a layer structure is preferable to use for the object of a deodorizing characteristic for ammonia, and particularly preferred is a zirconium phosphate. Further, the metallic phosphate, such as zirconium phosphate, is preferably one that does not carry a metallic ion such as a silver ion or copper ion for the object of a deodorizing characteristic for ammonia.
The content amount of the inorganic deodorant is in a range from 0.5 to 10 wt.% with respect to the total mass of the polyurethane elastic yarn. When the content of the inorganic deodorant is less than 0.5 wt.%, a sufficient ammonia gas deodorizing characteristic may hardly be obtained when using as a fabric. It is more preferable that the content is greater than or equal to 1.5 wt.%. Conversely, when the content exceeds 10 wt.%, deterioration of the elastic properties or increasing cost may occur. It is more preferable that the content is less than or equal to 7.0 wt.%. When considering a balance between the deodorizing characteristics and physical properties against ammonia gas to the cost, the content is particularly preferable in a range from 1.5 to 5.0 wt.%.
Also, the inorganic deodorant in the present invention is preferably powder having less than or equal to 3.0 μηι of an average primary particle size from the viewpoint of preventing the spinning solution clogging in the spinneret, and more particularly less than or equal to 1.5 μιη. Further, when the average primary particle size is less than 0.05 μηι, the cohesive force is increased and causes difficulty in mixing uniformly in the spinning solution, and therefore, the average primary particle size is preferred to be greater than or equal to 0.05 μιη from the viewpoint of dispersibility.
The polyurethane elastic yarn used in the present invention may contain a medical agent such as a light resistant agent, an antioxidant, a pigment, or the like in addition to the inorganic deodorant. For example, hindered phenol based drugs such as "Sumilizer" (registered trademark) GA-80 manufactured by Sumitomo Chemical Co., Ltd. and BHT as a light resistance agent and antioxidant, benzotriazole system such as various "Tinuvins" (registered trademark) manufactured by Ciba Geigy, benzophenone-based drugs,
phosphorus-based drugs such as "Sumilizer" (registered trademark) P-16 manufactured by Sumitomo Chemical Co., Ltd., various hindered amine-based drugs, various pigments such as iron oxide, titanium oxide, inorganic materials such as zinc oxide, cerium oxide, magnesium oxide, calcium carbonate, carbon black, fluorine-based or silicon-based resin powders, metallic soaps such as magnesium stearate, lubricants such as mineral oil, various antistatic agents such as cerium oxide, betaine, or phosphoric acid are also preferred to be contained, and those are preferably reacted with a polymer. Further, in order to increase durability for particularly light and various nitric oxides, nitric oxide scavengers such as HN-150 manufactured by Japan Hydrazine Co., Ltd., thermal oxidation stabilizers such as "Sumilizer" (registered trademark) GA-80 manufactured by Sumitomo Chemical Co., Ltd., light stabilizers such as "Sumisorb" (registered trademark) 300#622 are also preferably used.
The cationic dyeable polyester fiber used in a fabric of the present invention will be described below.
Normally, the cationic dyeable polyester fiber is a fiber obtained by copolymerizing a compound containing a metallic sulfonate group in the polyester molecular structure, and the definition in the present invention is the same. Such cationic dyeable polyester fiber may be available in various types in which a type of compound containing a metallic sulfonate group or that in which the rate of copolymerization is different due to increasing of staining properties, improvement of texture, or the like; however, the cationic dyeable polyester fiber used in the present invention can be used without being particularly limited as long as the staining properties are exhibited for normal cationic dye.
The fabric in the present invention is preferable to have a mixing ratio of the cationic dyeable polyester fiber greater than or equal to 40 wt.% in order to demonstrate the deodorizing effects with a proper balance, a mixing ratio of the polyurethane elastic yarn greater than or equal to 5 wt.% and less than 30 wt.%, and a mass of 10 cm x 10 cm greater than or equal to 1 g. When the condition described above is satisfied, a knitted fabric may be a regular polyester fiber or a combination of polyamide fiber, cotton, or the like. The l nitted fabric also is not particularly limited as long as the condition above is satisfied, and the knitted fabric may be made in any method such as circular knit, warp knit, tricot, raschel knit, or used as a covering finished yarn.
Further, it is preferred that the fabric in the present invention is stained by cationic dye. The cationic dye used for staining in such case is not particularly limited even though there are a variety of types such as polymethins, azos, azamethines, anthraquinones, thiazoles, or the like, and a dye that is generally commercially available can be used under normal conditions. Furthermore, it is preferred that the cationic dye contains a counter ion, and a calboxylate anion, a sulfonate anion, a sulfate ester anion, phosphate ester anion, or the like to demonstrate fabric deodorizing effects, particularly preferred is a sulfonate anion. In addition, in order to improve texture and to provide other functions after the staining process, softening finish, antibacterial treatment, water absorption treatment, water repellent treatment, antistatic treatment, or the like may be provided properly.
It is preferred that the fabric of the present invention is a knitted fabric. In order to demonstrate the deodorizing effects with a proper balance, a knitted fabric is preferable where a mixing ratio of the cationic dyeable polyester fiber is greater than or equal to 40 wt.%, a mixing ratio of the polyurethane elastic yarn is greater than or equal to 5 wt.% and less than 30 wt.%, and a mass of 10 cm x 10 cm is greater than or equal to 1 g, and as long as satisfying the configuration, it may be a combination of a regular polyester fiber, polyamide fiber, cotton or the like other than the polyurethane elastic yarn or cationic dyeable polyester fiber.
The polyurethane elastic yarn used in the present invention will be described below (hereinafter, the polyurethane configuring the polyurethane elastic yarn used in the present invention will be abbreviated as polyurethane used in the present invention).
The polyurethane used in the present invention may be anything and not particularly limited as long as a polymerdiol and a diisocyanate are the starting materials. The synthesis method also is not particularly limited. That is, for example, polyurethane-urea composed of polymer diol, diisocyanate, and low molecular weight diamine, or polyurethane urethane composed of polymer diol, diisocyanate, and low molecular weight diol may be used. Also, polyurethane-urea in which a compound having a hydroxyl group and an amino group as chain extenders may be used. The polyurethane obtained by using isocyanate, glycol of a tri- or greater polyfunctionality, or the like without obstructing the advantageous effects of the present invention, is also preferred for use in the present invention.
For the polymer diol, polyethers, polyester diols, polycarbonate diols, or the like are preferred. A polyether diol is particularly preferred to be used from the viewpoint of providing flexibility and elasticity to yarn.
For the polyether diol, it is preferred that, for example, polyethylene oxide, polyethylene glycol, polyethylene glycol derivatives, polypropylene glycol, polytetramethylene ether glycol (hereinafter, abbreviated as PTMG), modified PTMG (hereinafter, abbreviated as 3M-PTMG) that is a copolymer of tetrahydrofuran (hereinafter, abbreviated as THF) and 3-methyl tetrahydrofuran, a modified PTMG that is a copolymer of THF and 2,3-dimethyl THF, polyol having a side chain on both sides disclosed in Patent No. 2615131 or the like, a random copolymer where THG and ethylene oxide and/or propylene oxide are irregularly arranged, or the like is used. These polyether diols may be of one kind or two or more kinds mixed or copolymerized.
Also, from the viewpoint of obtaining abrasion resistance and light resistance as the polyurethane elastic yarn, it is preferred that butylene adipate, polycaprolactone diol, polyester diols such as polyester polyol having a side chain disclosed in JP Unexamined Patent Application Publication No. S61-26612 and the like, or polycarbonate diols disclosed in JP Unexamined Patent Application Publication No. H02-289616, or the like is used.
In addition, such polymer diols may be used solely, or two or more types may be mixed or copolymerized.
With the molecular weight of the polymer diol, a number average molecular weight is preferably between 1000 and 8000, and more preferably between 1500 and 6000 from the viewpoint of obtaining elasticity, strength, heat resistance, and the like. Using the polyol within the range of the number average molecular weight, an elastic yarn that is excellent in elasticity, strength, strength of elastic recovery, and heat resistance can be obtained easily. Note that, the number average molecular weight is measured by GPC, and is converted by polystyrene (the same manner is applied for other ingredients and polymers below).
Next, for the diisocyanate, an aromatic diisocyanate such as diphenylmethane
diisocyanate (hereinafter, abbreviated as MDI), tolylene diisocyanate, 1,4-diisocyanate benzene, xylylene diisocyanate, 2,6-naphthalene diisocyanate, or the like, is particularly suitable to synthesize polyurethane for heat resistance and high strength. Furthermore, for an alicyclic diisocyanate, for example, methylenebis (cyclohexyl isocyanate) (hereinafter, abbreviated as H12MDI), isophorone diisocyanate, methyl cyclohexane 2,4-diisocyanate, methyl cyclohexane 2,6-diisocyanate, cyclohexane 1,4-diisocyanate, hexahydroxylene diisocyanate, hexahydrotolylene diisocyanate, octahydro 1,5 -naphthalene diisocyanate, or the like is preferred. The aliphatic diisocyanate can be used effectively particularly when suppressing the yellow discoloration of the polyurethane elastic yarn. In addition, these diisocyanates may be used solely or in conjunction with two or more.
Next, it is preferable that at least one type of chain extender is used when synthesizing the poiyurethane from among low molecular weight diols and low molecular weight diamines in which the molecular weight is less than or equal to 300. Note that, it may even have a hydroxyl group and an amino group such as ethanolamine.
Preferred low molecular weight diamines include, for examine, ethylenediamine, 1,2-propanediamine, 1,3-propanediamine, hexamethylenediamine, p-phenylenediamine, p-xylylenediamine, m-xylylenediamine, ρ,ρ' -methyl enedianiline, 1,3-cyclohexyldiamine, hexahydromethaphenilenediamine, 2-methyl pentamethylenediamine, bis(4-aminophenyl) phosphine oxide, or the like. It is preferable that one more of these are used.
Ethylenediamine is particularly preferred. By using ethylenediamine, a yarn with excellent elasticity, strength of elastic recovery, and heat resistance can be obtained easily. Triamine compounds such as, for example, diethylene triamine that can form a cross-linked structure may be added to these chain extenders to an extent so as not to lose the efficacy.
Further, for the low molecular weight diol having a molecular weight less than or equal to 300, ethylene glycol, 1, 3 -propanediol, 1, 4-butanediol, bis hydroxyethoxybenzene, bis hydroxy ethylene terephthalate, 1-methyl-l, 2-ethanediol, or the like is a typical example. It is preferable that one or more types are used from among these. Ethylene glycol, 1 , 3 -propanediol, and 1, 4-butanediol are particularly preferred. Use of these enables the heat resistance to be further increased as poiyurethane of a diol extension, and a higher strength yarn can be obtained.
Also, the molecular weight of the polyurethanes used in the present invention is preferable in the range between 30000 and 150000 as number average molecular weights from the viewpoint of obtaining fibers with durability and higher strengths.
For the poiyurethane, it is also preferable that one or more types of terminal sequestrants are mixed. Preferred terminal sequestrants include monoamines such as dimethylamine, diisopropylamine, ethylmethylamine, diethylamine, methylpropylamine,
isopropylmethylamine, diisopropylamine, butylmethylamine, isobutylmethylamine, isopentylmethylamine, dibutylamine, diamylamine, or the like, monols such as ethanol, propanol, butanol, isopropanol, allyl alcohol, cyclopentanol, or the like, monoisocyanates such as phenylisocyanate, or the like.
Next, a method for manufacturing the polyurethane elastic yarn used in the present invention will be described below.
The polyurethane elastic yarn used in the present invention is spun by containing an inorganic deodorant (for example, a metal phosphate such as zirconium phosphate) and a quaternary ammonium salt antibacterial or the like if necessary into the spinning solution including polyurethane obtained by using a polymer diol and a diisocyanate as starting materials. It is preferred that the polyurethane solution is prepared in advance and the inorganic deodorant is then added thereto from the standpoint of stabilizing the
polymerization. Further, the manufacturing method for the polyurethane that is a solute may be either a melt polymerization process or a solution polymerization process, and may even be another method. Of them, the solution polymerization process is more preferred. In the case of a solution polymerization process, foreign matter such as a gel are rarely generated in the polyurethane, spinning is easier, and a polyurethane elastic yarn with a low fineness is easy to obtain.
Furthermore, the polyurethane of particular preferable use in the present invention includes those that are synthesized by using PTMG where a number average molecular weight is between 1500 and 6000 as the polymer diol, MDI as the diisocyanate, and at least one of 1, 2-prooane diamine, 1, 3 -propane diamine, hexamethylene diamine, or
ethylenediamine as the chain extender.
The polyurethane used in the present invention can be obtained by synthesizing using the ingredients described above in a solvent, for example, N, N-dimethylacetamide (hereinafter, abbreviated as DMAc), N, N-dimethylformamide (hereinafter, abbreviated as DMF), dimethyl sulfoxide (hereinafter, abbreviated as DMSO), N-methyl-2-pyrrolidone (hereinafter, abbreviated as NMP), or a solvent having the above as the primary ingredient. Particularly preferred methods which may be used are, for example, the so-called one-shot process in which the polyurethane is made by putting all materials into such solvent, dissolving them, and performing the reaction by heating the solution to a suitable temperature, or a method in which the polyurethane is made by first melting and reacting the polymer diol and diisocyanate and then dissolving the reaction product in a solvent and reacting the chain extender described above or the like.
When using a diol for the chain extender, it is preferred to adjust the melting point of the high-temperature side in a range from 200 to 260 °C from the standpoint of obtaining excellent heat resistance. A representative method may be accomplished by controlling the polymer diol, MDI, type of diol and ratio. When the molecular weight of the polymer diol is low, polyurethane with a high-temperature melting point can be obtained by relatively increasing the ratio of MDI. In the same manner, when the molecular weight of the diol is low, polyurethane with a high-temperature melting point can be obtained by relatively reducing the ratio of the polymer diol.
When a number average molecular weight of the polymer diol is 1800 or greater, in order to have the high-temperature side melting point to be 200 °C or higher, it is preferable to proceed the polymerization in the ratio (number of moles of MDI)/(Number of moles of polymer diol) = 1.5 or greater.
In the present invention, it is preferred to contain an inorganic deodorant such as a metal , phosphate in such polyurethane solution. When the inorganic deodorant is added into the polyurethane solution, any method may be used. As a representative method, various means can be used such as a method using a static mixer, a method by stirring, a method by a Homo Mixer, a method using a twin-screw extruder, or the like.
For the polyurethane used in the present invention, in order to improve the deodorizing effects for ammonia gas, an inorganic deodorant is contained in the polyurethane elastic yarn in a specified range; however, it is preferred to disperse the inorganic deodorant evenly into the polyurethane spinning solution prior to spinning, and the inorganic deodorant above is preferably added to the polyurethane spinning solution that is a solvent of DMF, DMAc, or the like, and then stirred and mixed so as to disperse evenly. More specifically, it is preferable that the inorganic deodorant is prepared to be a dispersion solution where DMF, DMA, or the like is dispersed in advance, and the dispersion solution is mixed in the polyurethane spinning solution. It is preferred to use the same solvent as the polyurethane solution for the dispersion medium used in the dispersion solution of the inorganic deodorant from the standpoint of performing adding evenly to the polyurethane solution. Also, when adding the inorganic deodorant to the polyurethane solution, for example, a medical agent such as a light resistance agent, an oxidation inhibitor, or a pigment may be added at the same time.
The polyurethane yarn used in the present invention can be obtained by spooling the spinning solution that is configured as described above, for example, by dry spinning, wet spinning or melt spinning. Among them, the dry spinning is preferred from the standpoint of stability in spinning in all finenesses from very fine to thick yarn.
The fineness and cross-sectional shape of the polyurethane elastic yarn used in the present invention has no particular limitation. For example, the cross-sectional shape of the yarn may be a circular shape, or a flat shape.
The dry spinning method is also not particularly limited, and the spinning method may be suitably selected according to the spinning conditions suitable to the desired characteristics and the spinning equipment.
Examples
An example of the present invention will be described in further detail. Washing Method
Washing was conducted according to the washing method manual established by the Japanese Association for the Functional Evaluation of Textiles. That is, a household electric washing machine defined in washing method 103 in appendix table 1 of JIS L0217:1995 was used, washing liquid was prepared where 40 ml of the JAFET standard detergent
(manufactured by Japanese Association for the Functional Evaluation of Textiles) in relation to the water 30 liters at 40 C° was dissolved, and a washing material that was a 1kg sample was placed in the washing liquid. Then, the washing material was washed for 5minutes, span for dewatering, rinsed for two minutes, spun for dewatering, rinsed for 2 minutes, and spun for dewatering in this order, and this process was considered as one washing. The washing 10 times means repeating 10 times this series of operations, and washing 50 times means repeating 50 times this series of operations. Deodorizing Effects of Polyurethane Elastic Yarn
A deodorizing test was conducted based on the standards of Deodorant Processed Textiles Certification Criteria (published by: Japan Textile Evaluation Technology Council, product authentication department, issued on September 1, 2002), and the deodorizing effect evaluation of odorous components was conducted by an equipment test as follows.
(Detector Tube Method)
1. The sample (polyurethane elastic yarn 0.15 g) was placed into a Tedlar bag.
2. A required amount of test gas (ammonia gas: 100 ppm, acetic acid gas: 30 ppm) was injected, and the concentration of the gas remaining after two hours (ppm) was measured by the detector tube corresponding to the ingredient (manufactured by GASTEC Co.) to be the residual gas concentration of the sample test. Note that, the gas filling amount was 3L, and the diluent gas was dry air or nitrogen gas.
3. The same evaluation was conducted without placing the sample in the Tedlar bag to be the residual gas concentration of the blank test.
4. The evaluation was made according to the following formula to calculate the deodorizing ratio.
Formula 1
(Residual gas concentration of blank test-residual gas concentration of sample test")
Deodorizing Ratio (%) = i „ , : - x 100
Residual gas concentration of blanktest
Note that, the measurement values were obtained as the average values of n = 3.
Deodorizing Effects of Fabric
As a sample, the deodorizing effect evaluation for odorous components was conducted in the same manner as the "Deodorizing Effects of Polyurethane Elastic Yarn" except using a 10 cm x 10 cm fabric in place of 0.15 g of the polyurethane elastic yarn to calculate the deodorizing ratio.
The fabric deodorant effect is preferably 70% or greater in both ammonia and acetic acid in washing durability after washing 10 times, and further preferably 70% in both ammonia and acetic acid after washing 50 times. Example 1
DMAc solution (35 wt.%) of polyurethane-urea polymer composed of ethylenediamine, MDI, and PTMG having a number average molecular weight of 1800, and diethylamine as the terminal sequestrant was prepared. Next, as the antioxidant, a polyurethane solution (DuPont Co. "Methacrol"™ 2462D) yielded by the reaction of t-butyl diethanolamine and methylene-bis-(4-cyclohexylisocyanate), and a condensation polymer of p-cresol and divinylbenzene (DuPont Co. "Methacrol"™ 2390D) were mixed in a weight ratio of 2 to 1 to prepare an antioxidant DMAc solution. Ninety-six parts by weight of the polyurethane urea polymer DMAc solution and four parts by weight of the antioxidant solution were mixed to make the polymer solution Al . Next, the zirconium phosphate deodorant "Kesumon"™ NS-10 (Toagosei Co., average primary particle size 0.9 μηι) was dispersed in DMAc by a homomixer to make the zirconium phosphate dispersion B 1 (35 wt.%). A ratio of 99 wt.% of the polymer solutions Al and 2 wt.% of the zirconium phosphate dispersion Bl were uniformly mixed to make the spinning solution CI . This was dry-spun at a speed of 720 m/min. with a speed ratio of the godet rollers and the winder of 1.3, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament with a zirconium phosphate content of 2 wt.% was obtained.
The results after evaluating the ammonia gas deodorizing effects with 0.15 g of the obtained polyurethane elastic yarn are shown in Table 1.
Next, a circulation knit was made by a typical method for a fabric by using the polyurethane elastic yarn and cationic dyeable polyester fiber (type WFOF: manufactured by Toray Co, 84 decitex, 72 filament).
The dyeing process was performed by using the obtained circular knit fabric as follows to obtain the dyed knitted fabric in which the mixing ratio of the polyurethane elastic yarn is 9 wt.%, and the mass of 10 cm x 10 cm was 1.3 g.
(1) Refining Process: An aqueous solution of 2 g/L "Sunmol" BL650 (anionic surfactant produced by Nikka Chemical Co., Ltd.) was prepared and treated at 80 °C for 20 minutes.
(2) Presetting: Treated at 190 °C x 1 minute at the tentering rate 30%.
(3) Dyeing: Using a dye Kayacryl Black FB-ED (a cationic dye manufactured by Nippon Kayaku Co., Ltd.), and dyed for 60 minutes at 125 °C at a concentration of 8% owf.
Here, %owf shows a percentage of the mass of dyes with respect to the fiber mass in the dyebath.
The deodorizing effects were measured on the knitted fabric after the preset treatment in (2), and each knitted fabric after dyeing in (3). The evaluation results are shown in Table 2.
Comparative Example 1
A circular knitted fabric was prepared using the polyurethane elastic yarn used in
Example 1, and dying treatment was conducted according to the following method replacing the cationic polyurethane elastic yarn (Tetoron, Toray Co., 84 decitex and 72 filament) with a normal polyester fiber (Tetoron, Toray (Inc.), 84 decitex and 72 filament).
(1) Refining Process: An aqueous solution of 2 g/L "Sunmol" BL650 (anionic surfactant produced by Nikka Chemical Co., Ltd.) was prepared and treated at 80 °C for 20 minutes.
(2) Presetting: Treated at 190 °C x 1 minute at the tentering rate 30%.
(3) Dyeing: Using a dye Dianix Tuxde Black F (trade name, manufactured by DyStar Japan Ltd., and dyed for 60 minutes at 125 °C at a concentration of 10% owf.
(4) Reduction Cleaning: Treated at 80 °C for 20 minutes in a bath containing hydrosulfite 3.0 g/L, sodium hydroxide 1.5 g/L, Bisnol US-10 (trade name, manufactured by Ipposha Oil Industries, Co., Ltd.) 1.5 g/L.
The deodorizing effects were measured on the knitted fabric after the preset treatment in (2), and each knitted fabric after dyeing treatment in (4) was completed.
Each evaluation result is shown in Table 1 and Table 2.
Example 2
Instead of the zirconium phosphate dispersion Bl, dihydrogen aluminum
tripolyphosphate deodorant "K-FRESH" manufactured by TAYCA Co. (registered trademark) #100P (average primary particle size 1.0 μηι) was dispersed in DMAc by a homomixer to make a dihydrogen aluminum tripolyphosphate dispersion B2 (35 wt.%). A ratio of 96 wt.% of the polymer solutions Al and 4 wt.% of dihydrogen aluminum tripolyphosphate dispersion B2 were uniformly mixed to malce the spinning solution C2, this was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament thread with the dihydrogen aluminum tripolyphosphate content of 4 wt.% was obtained. The deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A circular knitted fabric and the knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1 , and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2.
Example 3
Instead of the zirconium phosphate dispersionBl, an inorganic deodorant "Shu-Clenase" (registered trademark) KD-211 manufactured by Rasa Industries, Ltd. was dispersed in DMAc by a homomixer to make a diepersion B3 (35 wt.%).
A ratio of 96 wt.% of the polymer solutions Al and 4 wt.% of dispersion liquid B3 were uniformly mixed to make the spinning solution C3, this was dry- spun in the same manner as Example 1 , and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament thread with the inorganic deodorant content of 4 wt.%> was obtained. The deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A circular knitted fabric and a knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1 , and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2. Example 4
The polymer solutions Al and Bl were uniformly mixed at 99 wt.%> and 1 wt.% to make the spinning solution C4. This was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament with the inorganic deodorant content of 1 wt.% was obtained. The deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A circular knitted fabric and a knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1, and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2. Example 5
The spinning solution CI was dry-spun at a speed of 710 m/min. with a speed ratio of the godet rollers and the winder of 1.21, and 350 g of a wound polyurethane elastic yarn 44 decitex, 4 filament, with a inorganic deodorant content of 2 wt.% was obtained. The deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A two way tricot was then knitted as a fabric by a normal method using a cationic dyeable polyester fiber (type FS92: manufactured by Toray Co.) (mixing ratio 76%), and using the polyurethane elastic yarn (mixing rate 24%) of 44 decitex for a bag. · The dyeing process was performed by using the obtained two way tricot as follows to obtain the dyed knitted fabric in which the mixing ratio of the
polyurethane elastic yarn is 24 wt.%, and the mass of 10 cm x 10 cm was 1.88g.
(1) Refining Process: 2 g/L of anionic surfactant "Sunrnol" (registered trademark) BL650 (manufactured by Nikka Chemical Co., Ltd.) and 1500 ppm of EDTA-based sequestrant "Acromar" (registered trademark) DH 700 (manufactured by Nagase chemteX Co.) were added to soft water of total hardness 10 ppm to prepare a solution as the treatment solution, and treated at 80 °C for 20 minutes by using the treatment solution.
(2) Presetting: Treated at 190 °C x 1 minute at the tentering rate 30%.
(3) Dyeing: Using a cationic dye "Kayacryl Black" (registered trademark) FB-ED (manufactured by Nippon Kayaku Co., Ltd.), and dyed for 60 minutes at 125 °C at a concentration of 8% owf.
The deodorizing effects were measured on the knitted fabric after the preset treatment in (2), and each knitted fabric after dyeing in (3).
Each evaluation result is shown in Table 1 and Table 2. Example 6
The cationic dye used in Example 1 was altered to 1,
3-dimethyl-lH-benzo(d)imidazole~2(3H~one and 2-amino-3 -methyl benzolium chloride, and a dyeing fabric was made in the same matter as Example 1.
The evaluation results are shown in Table 2.
Example 7
The cationic dye used in Example 1 was altered to 1,
3-dimethyl-lH-benzo(d)imidazol-2(3H)-one and 2-amino-3-methylbenzolium dimethyl sulfate, and a dyeing fabric was made in the same matter as Example 1.
The evaluation results are shown in Table 2. Example 8
A knitted fabric that was a stained circular knitted fabric was prepared as the fabric in the same manner as Example 1 except using a fiber at a ratio of 40: 51 of the cationic dyeable polyester fiber and a regular polyester fiber (type W20F: manufactured by Toray Co., 84 decitex 72 filament) instead of the cationic dyeable polyester fiber (type WFOF:
manufactured by Toray Co., 84 decitex 72 filament) used in Example 1, and the evaluation was conducted.
Each evaluation result is shown in Table 1 and Table 2. Example 9
A circular knitted fabric and a knitted fabric dyed thereof were prepared as the fabric in the same manner as Example 1 except using a fiber at a ratio of 30: 61 of the cationic dyeable polyester fiber and a regular polyester fiber (type W20F: manufactured by Toray Co., 84 decitex 72 filament) instead of the cationic dyeable polyester fiber (type WFOF:
manufactured by Toray Co., 84 decitex 72 filament) used in Example 1, and the evaluation was conducted. Each evaluation result is shown in Table 1 and Table 2. Example 10
A circular knitted fabric and the knitted fabric dyed thereof were prepared as a fabric in the same manner as Example 8 except dyeing treatment was conducted in the same manner as in Comparative Example 1, and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2.
Comparative Example 2
The polymer solution Al was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament was obtained. Evaluation of the deodorizing effects for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A circular knitted fabric and the knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1, and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2.
Comparative Example 3
A ratio of 99.5 wt.% of the polymer solutions Al and 0.5 wt.% of the dispersion B3 was uniformly mixed to make the spinning solution C5. This was dry-spun in the same manner as Example 1, and 200g of a wound polyurethane elastic yarn 22 decitex, 2 filament with the inorganic deodorant content of 0.5 wt.% was obtained. The deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A circular knitted fabric and the knitted fabric dyed thereof were then prepared as a fabric in the same manner as Example 1 , and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2. Comparative Example 4
The polymer solution Al was dry-spun in the same manner as Example 5, and 350g of a wound polyurethane elastic yarn 44 decitex, 4 filament was obtained. The deodorizing effects evaluation for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1. A two way tricot and the dyed fabric thereof were then prepared as a fabric in the same manner as Example 5, and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2.
Comparative Example 5
This spinning solution C3 was dry-spun in the same manner as Example 5, and 350 of a wound polyurethane elastic yarn 44 decitex, 4 filament with the inorganic deodorant content of 4 wt.% was obtained. Evaluation of the deodorizing effects for ammonia gas was conducted on the obtained polyurethane elastic yarn in the same manner as Example 1.
Next, a regular polyester fiber (type S962): manufactured by Toray Co.) (mixing ratio 76%) was used and a two way tricot was knitted by a normal method as a fabric by using the polyurethane elastic yarn of 44 decitex Imixing (ratio 24%) for a bag. The dyeing process was performed as follows by using the obtained two way tricot to obtain the dyed knitted fabric in which the mixing ratio of the polyurethane elastic yarn is 24 wt.%, and the mass of 10 cm x 10 cm was 1.86 g.
(1) Refining Process: 2 g/L of anionic surfactant "Sunmol" (registered trademark) BL650 (manufactured by Nikka Chemical Co., Ltd.) and 1500 ppm of EDTA-based sequestrant "Acromar" (registered trademark) DH 700 (manufactured by Nagase chemteX Co.) were added to soft water of total hardness 10 ppm to prepare a solution as a treatment solution, and treated at 80 °C for 20 minutes by using the treatment solution.
(2) Presetting: Treated at 190 "C x i minute at the tentering rate 30%.
(3) Dyeing: Using a dye Dianix Tuxde Black F (tradename, manufactured by DyStar Japan Ltd., and dyed for 60 minutes at 125 °C at a concentration of 10% owf.
(4) Reduction Cleaning: Treated at 80 °C for 20 minutes in a bath containing hydrosulfite 3.0 g/L, sodium hydroxide 1.5 g/L, Bisnol US-10 (trade name, manufactured by Ipposha Oil Industries, Co., Ltd.) 1.5 g/L. The deodorizing effects were measured on the knitted fabric after the preset treatment in (2), and each knitted fabric after dyeing treatment in (4) was completed.
Each evaluation result is shown in Table 1 and Table 2.
Comparative Example 6
A circular knitted fabric and the knitted fabric dyed thereof were prepared as a fabric in the same manner as comparative example 3 except changing the inorganic deodorant used in the comparative example 3 to 0.3 wt.%, and the evaluation was conducted on these.
Each evaluation result is shown in Table 1 and Table 2.
REPLACEMENT SHEET LP6645PCT1
Table 1
Figure imgf000023_0001
SUBSTITUTE SHEET (RULE 26) REPLACEMENT SHEET LP6645PCT1
Table 2
Figure imgf000024_0001

Claims

CLAIMS What is claimed is:
1. A fabric, comprising a polyurethane elastic yarn and a cationic dyeable polyester fiber where a mass of 10 cm x 10 cm is greater than or equal to 1 g, wherein the polyurethane elastic yarn has a deodorant ratio of ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% both after washing 0 times and 10 times, and a mixing ratio of the polyurethane elastic yarn is 5 to 30 wt.%.
2. The fabric according to claim 1 wherein a mixing ratio within the fabric of the cationic dyeable polyester fiber is greater than or equal to 40 wt.%.
3. The fabric according to claim 1 or 2, is stained by the cationic dye.
4. The fabric according to any of claims 1 to 3, wherein the polyurethane elastic yarn contains an inorganic deodorant in a range from 0.5 wt.% to 10 wt.%.
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