WO2019054105A1 - 手袋の製造方法 - Google Patents
手袋の製造方法 Download PDFInfo
- Publication number
- WO2019054105A1 WO2019054105A1 PCT/JP2018/029886 JP2018029886W WO2019054105A1 WO 2019054105 A1 WO2019054105 A1 WO 2019054105A1 JP 2018029886 W JP2018029886 W JP 2018029886W WO 2019054105 A1 WO2019054105 A1 WO 2019054105A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thickener
- urethane resin
- mass
- aqueous
- parts
- Prior art date
Links
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Images
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic Table
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- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0058—Three-dimensional gloves
- A41D19/0065—Three-dimensional gloves with a textile layer underneath
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/04—Appliances for making gloves; Measuring devices for glove-making
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05D1/00—Processes for applying liquids or other fluent materials
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
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- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/17—Halides of elements of Groups 3 or 13 of the Periodic Table
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- D06M11/57—Sulfates or thiosulfates of elements of Groups 3 or 13 of the Periodic Table, e.g. alums
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- D06M11/64—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
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- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
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- 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
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using knitted fabrics
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
- D06N3/0052—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by leaching out of a compound, e.g. water soluble salts, fibres or fillers; obtained by freezing or sublimation; obtained by eliminating drops of sublimable fluid
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/141—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of two or more polyurethanes in the same layer
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
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- A41D2400/80—Friction or grip reinforcement
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- A41—WEARING APPAREL
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- A41D2500/54—Synthetic resins or rubbers in coated form
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
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- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/106—Roughness, anti-slip, abrasiveness
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- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
- D06N2209/123—Breathable
Definitions
- the present invention relates to a method of manufacturing a glove.
- Synthetic rubbers such as natural rubber and nitrile rubber, which are generally used as elastic materials, may be avoided for use in gloves because there is a risk of causing allergies by contact, and rubber elastic may be used as an alternative material. And relatively flexible solvent-type urethane resins are widely used.
- a glove using the aqueous urethane resin for example, a glove using an aqueous dispersion resin liquid containing an aqueous urethane and an organic filler is known (see, for example, Patent Document 1).
- a glove using an aqueous dispersion resin liquid containing an aqueous urethane and an organic filler is known (see, for example, Patent Document 1).
- the grip slip resistance
- the problem to be solved by the present invention is to use a water-based urethane resin composition, without passing through steps such as heating and foaming, to form a coagulated film of a urethane resin having a porous structure simply on a fiber braided glove. It is an object of the present invention to provide a method for producing a glove which is excellent in formation, flexibility and grip.
- the present invention provides an aqueous urethane resin composition containing an aqueous urethane resin (A) having an acid value of 0.01 mg KOH / g or more, and a thickener having an oxyethylene group content of 2 ⁇ 10 ⁇ 2 mol / g or less B) was added in the range of 0.01 to 30 parts by mass with respect to 100 parts by mass of the aqueous urethane resin (A) to obtain a thickened liquid, and then (i) it was thickened
- the fiber knitting gloves are immersed in the solution and then coagulated in a coagulation bath (C) containing a metal salt (c-1), or (ii) in a coagulation bath (C) containing a metal salt (c-1) in advance It is intended to provide a method for producing a glove, which comprises immersing the soaked fiber knitted glove in a thickened solution and coagulating.
- a coagulated film of a urethane resin having a porous structure can be easily formed on a fiber-woven glove, without passing through a heating or foaming step, with respect to the aqueous urethane resin composition, And a glove excellent in grip can be obtained.
- the "porous" means having a large number of fine pores.
- FIG. 2 is an electron micrograph of a cross-sectional view of the glove obtained in Example 1.
- FIG. It shows an electron micrograph of a cross-sectional view of the glove obtained in Example 6.
- the method for producing a glove according to the present invention comprises an aqueous urethane resin composition containing an aqueous urethane resin (A) having an acid value of 0.01 mg KOH / g or more and having an oxyethylene group content of 2 ⁇ 10 -2 mol / g or less
- the thickener (B) is added in the range of 0.01 to 30 parts by mass with respect to 100 parts by mass of the aqueous urethane resin (A) to obtain a thickened liquid, and then (i) thickening
- the fiber knitted glove is dipped in the mixed solution and then coagulated in a coagulation bath (C) containing a metal salt (c-1), or (ii) a coagulation bath (C) containing a metal salt (c-1) in advance It is essential to immerse the fiber-knitted glove, which has been immersed in the above), in a thickened solution and to coagulate it.
- the aqueous urethane resin (A) used in the present invention it is essential to easily obtain a porous structure by using one having an acid value of 0.01 mg KOH / g or more.
- the acid value of the aqueous urethane resin (A) is in the above range, the synthesized aqueous urethane resin is stable and can be easily coagulated with the coagulant (C), so that a good porous structure can be formed.
- the acid value is preferably in the range of 0.01 to 70 mg KOH / g, more preferably in the range of 1 to 50 mg KOH / g, and more preferably 3 to 40 mg KOH / g, from the viewpoint of obtaining an even better porous structure.
- the range is more preferable, and the range of 6 to 30 mg KOH / g is particularly preferable.
- water-based urethane resin (A) is described in the Example mentioned later.
- the aqueous urethane resin (A) is one having the acid value, that is, one having a structure derived from an anionic group such as a carboxyl group or a sulfonic acid group.
- examples of the aqueous urethane resin (A) include a polyol (a-1), a compound (a-2) providing an anionic group, a chain extender (a-3), and a polyisocyanate (a-4) Reactants can be used.
- polyether polyol for example, polyether polyol, polycarbonate polyol, polyester polyol, polyacrylic polyol, polybutadiene polyol, castor oil polyol and the like can be used.
- These polyols (a-1) may be used alone or in combination of two or more.
- the number average molecular weight of the polyol (a-1) is preferably in the range of 500 to 15,000, more preferably in the range of 600 to 10,000, from the viewpoint of flexibility and production stability of the aqueous urethane resin. Preferably, the range of 700 to 8,000 is more preferable, and the range of 800 to 5,000 is particularly preferable.
- the number average molecular weight of the polyol (a-1) is a value measured by gel permeation chromatography (GPC).
- Examples of the compound (a-2) for giving an anionic group include: 2,2-dimethylol propionic acid, 2,2-dimethylol butanoic acid, 2,2-dimethylol butyric acid, 2,2 valeric acid and the like Compounds having the following carboxyl group; 3,4-diaminobutanesulfonic acid, 3,6-diamino-2-toluenesulfonic acid, 2,6-diaminobenzenesulfonic acid, N- (2-aminoethyl) -2-aminoethyl
- a compound having a sulfonyl group such as sulfonic acid can be used. These compounds may be used alone or in combination of two or more. Among these, since the reactivity with respect to the coagulant (C) is good, it is preferable to use a compound having a carboxyl group from the viewpoint of being able to form a much better porous structure.
- the anionic group may be partially or entirely neutralized to a basic compound in the aqueous urethane resin composition.
- the basic compound include organic amines such as ammonia, triethylamine, pyridine and morpholine; alkanolamines such as monoethanolamine; and metal base compounds containing sodium, potassium, lithium, calcium and the like.
- the chain extender (a-3) has a number average molecular weight of 50 to 490, and examples thereof include ethylenediamine, 1,2-propanediamine, 1,6-hexamethylenediamine, piperazine and 2,5-dimethyl Piperazine, isophorone diamine, 1,2-cyclohexanediamine, 1,3-cyclohexanediamine, 1,4-cyclohexanediamine, 4,4'-dicyclohexylmethanediamine, 3,3'-dimethyl-4,4'-dicyclohexylmethanediamine 1, a chain extender having an amino group such as 1,4-cyclohexanediamine, hydrazine, etc .; ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, 1,3-propanediol, 1,3-butanediol, 1 , 4-butane di Use of a chain extender having a hydroxyl group such as alcohol, he
- chain extenders may be used alone or in combination of two or more.
- the amount of the chain extender (a-3) used is in the range of 0.01 to 8% by mass based on the total mass of the raw material of the aqueous urethane resin (A) from the viewpoint of the mechanical strength of the coagulated substance Is preferable, and the range of 0.01 to 5% by mass is more preferable.
- polyisocyanate (a-4) examples include aromatic polyisocyanates such as phenylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, carbodiimidated diphenylmethane polyisocyanate, etc .; hexamethylene diisocyanate, lysine diisocyanate Aliphatic or alicyclic polyisocyanates such as cyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethyl xylylene diisocyanate, dimer acid diisocyanate, norbornene diisocyanate and the like can be used. These polyisocyanates may be used alone or in combination of two or more.
- the aqueous urethane resin (A) may be, for example, the polyol (a-1), a compound (a-2) for providing the anionic group, or the chain extender (a-2) in the absence of a solvent or in the presence of an organic solvent. 3) and the above-mentioned polyisocyanate (a-4) can be mixed and produced, for example, by urethane reaction at a temperature of 50 to 100 ° C. for 3 to 10 hours.
- the aqueous urethane resin (A) may be, for example, the polyol (a-1), the compound (a-2) to which the anionic group is provided, and the polyisocyanate (a) in the absence of a solvent or in the presence of an organic solvent.
- a-4) is mixed and reacted at a temperature of 50 to 100 ° C., for example, for 3 to 10 hours to obtain a urethane prepolymer having an isocyanate group at its molecular end, and then the urethane prepolymer and a chain extender It can also be produced by reacting (a-3).
- Examples of the organic solvent that can be used when producing the aqueous urethane resin (A) include ketone solvents such as acetone and methyl ethyl ketone; ether solvents such as tetrahydrofuran and dioxane; acetate ester solvents such as ethyl acetate and butyl acetate; Nitrile solvents such as acetonitrile; amide solvents such as dimethylformamide, N-methylpyrrolidone and the like can be used.
- the organic solvents may be used alone or in combination of two or more.
- the average particle diameter of the aqueous urethane resin (A) is preferably in the range of 0.01 to 1 ⁇ m, and more preferably in the range of 0.05 to 0.9 ⁇ m, from the viewpoint of preventing the formation of a precipitate. .
- water-based urethane resin (A) is described in the Example mentioned later.
- the weight average molecular weight of the aqueous urethane resin (A) is preferably in the range of 10,000 to 1,000,000 from the viewpoint of physical properties such as flexibility and strength of processed products, and processability. More preferably, it is in the range of from 1,000 to 500,000.
- water-based urethane resin (A) shows the value measured similarly to the number average molecular weight of the said polyol (a1).
- the content of the aqueous urethane resin (A) in the aqueous urethane resin composition is in the range of 10 to 60% by mass in the aqueous urethane resin composition from the viewpoint of obtaining good viscosity and coating workability. It is preferable that it be in the range of 20 to 50% by mass.
- the aqueous urethane resin composition preferably contains an aqueous medium (Z) in addition to the aqueous urethane resin (A) from the viewpoint of coatability and storage stability.
- aqueous medium (Z) for example, water, an organic solvent miscible with water, and a mixture thereof can be used.
- the organic solvent miscible with the water include alcohol solvents such as methanol, ethanol, n-propanol and isopropanol; ketone solvents such as acetone and methyl ethyl ketone; polyalkylene glycol solvents such as ethylene glycol, diethylene glycol and propylene glycol; Alkyl ether solvents of polyols; lactam solvents such as N-methyl-2-pyrrolidone can be used.
- alcohol solvents such as methanol, ethanol, n-propanol and isopropanol
- ketone solvents such as acetone and methyl ethyl ketone
- polyalkylene glycol solvents such as ethylene glycol, diethylene glycol and propylene glycol
- Alkyl ether solvents of polyols Alkyl ether solvents of polyo
- the aqueous urethane resin (A) is produced in the absence of a solvent or in the presence of the organic solvent, and then anionic property in the aqueous urethane resin (A) After neutralizing the groups as necessary, the aqueous medium (Z) is supplied, and the method is produced by dispersing the aqueous urethane resin (A) in the aqueous medium (Z).
- a machine such as a homogenizer may be used as necessary.
- emulsifier examples include nonionic emulsifiers such as polyoxyethylene nonyl phenyl ether, polyoxyethylene lauryl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene sorbitol tetraoleate, polyoxyethylene / polyoxypropylene copolymer, etc.
- Fatty acid salts such as sodium oleate, alkyl sulfates, alkylbenzene sulfonates, alkyl sulfosuccinates, naphthalene sulfonates, polyoxyethylene alkyl sulfates, alkane sulfonate sodium salts, alkyl diphenyl ether sulfonate sodium salts, etc.
- Anionic emulsifiers; cationic emulsifiers such as alkylamine salts, alkyltrimethylammonium salts and alkyldimethylbenzylammonium salts It can be used. These emulsifiers may be used alone or in combination of two or more.
- the aqueous polyurethane composition may contain, in addition to the aqueous urethane resin (A) and the aqueous medium (Z), other additives.
- additives examples include antifoaming agents, urethanization catalysts, silane coupling agents, fillers, waxes, heat stabilizers, light stabilizers, pigments, dyes, antistatic agents, oil repellents, flame retardants, and blocking prevention.
- An agent etc. can be used.
- These additives may be used alone or in combination of two or more.
- the thickener (B) is relatively insoluble in the aqueous medium (Z), and the thickener remaining in the aqueous urethane resin (A) when the coagulated product is obtained thereby It is considered that the porous structure could be easily formed because the hollowed out when drying.
- a thickener having an oxyethylene group content of more than 2 ⁇ 10 -2 mol / g is used, the above-mentioned hollowing does not occur because the water solubilization is strong.
- the content of the oxyethylene group of the thickener (B) is preferably 1.8 ⁇ 10 ⁇ 2 mol / g or less, from the viewpoint of being able to form an even better porous structure, and 1.7 ⁇ 10 ⁇ 2 mol / g or less is more preferable.
- thickener (B) oxyethylene group to the total mass of all the compounds included in the [CH 2 CH 2 Calculated using the total number of moles of O].
- a urethane thickener containing an urethane compound, an additive such as an emulsifier, and water is used as the thickener (B), one without water, that is, the urethane compound and the addition It shall calculate with the total number-of-moles of the oxyethylene group in the said urethane compound and additive with respect to the total mass of an agent.
- the compounding amount of the thickener (B) is less than 0.01 parts by mass, there is a problem that a desired thickening effect can not be obtained and the coatability becomes poor, or a porous structure can not be formed. If the amount is more than 30 parts by mass, not only a porous structure can not be formed, but also an embrittled film can not be obtained for industrial use.
- the compounding amount of the thickener (B) is in the range of 0.1 to 20 parts by mass with respect to 100 parts by mass of the aqueous urethane resin (A), from the viewpoint of obtaining a still better porous structure. Is preferable, and the range of 0.15 to 10 parts by mass is more preferable.
- the compounding quantity of the said thickener (B) shall be calculated by solid content. For example, when carboxymethylcellulose is diluted with water as the thickener (B) and used, the compounding amount of the thickener (B) is calculated by the amount of carboxymethylcellulose itself used.
- a urethane thickener containing an urethane compound an additive such as an emulsifying agent, and water is used as the thickener (B), one without water, that is, the above urethane compound and The compounding amount of the thickener (B) is calculated by the total weight of the additive.
- the thickener (B) include cellulose thickeners; acrylic thickeners; urethane thickeners; protein thickeners such as casein, sodium caseinate and ammonium caseinate; polyvinyl alcohol Polyvinyl thickeners such as polyvinyl pyrrolidone and polyvinyl benzyl ether copolymer; polyether thickeners such as pluronic polyethers, polyether dialkyl esters, polyether dialkyl ethers, and polyether epoxy modified products; vinyl methyl ether-maleic anhydride A maleic anhydride thickener such as an acid copolymer; a polyamide thickener such as a polyamidoamine salt can be used.
- thickeners may be used alone or in combination of two or more.
- a mixed solution containing an aqueous urethane resin (A) and a thickener (C) becomes a dispersed state suitable for forming a porous structure, and a more favorable porous structure
- carboxymethylcellulose, methylcellulose, hydroxyethyl cellulose etc. can be used, for example. These thickeners may be used alone or in combination of two or more. Among these, carboxymethyl cellulose and / or carboxymethyl cellulose and / or from the point that the mixed liquid containing the aqueous urethane resin (A) and the thickener (C) becomes a dispersed state suitable for forming a porous structure and can form a much better porous structure. It is preferable to use methylcellulose, and in particular, carboxymethylcellulose is more preferable because it can form longitudinal cells and obtain a glove having more excellent flexibility and grip.
- acrylic thickener for example, a polyacrylate, a polymer of (meth) acrylic acid and a (meth) acrylic ester can be used. These thickeners may be used alone or in combination of two or more.
- the polyacrylate is a polymer of one or more compounds selected from the group consisting of acrylic acid, methacrylic acid, acrylate and methacrylate.
- the salt examples include alkali metal salts such as sodium salt, potassium salt and lithium salt; alkaline earth metal salts such as magnesium salt and calcium salt; ammonium salt; monoethanolamine salt, diethanolamine salt, triethanolamine salt and the like And alkylamine salts such as methylamine salt, ethylamine salt, propylamine salt and butylamine salt can be used.
- alkali metal salts such as sodium salt, potassium salt and lithium salt
- alkaline earth metal salts such as magnesium salt and calcium salt
- ammonium salt monoethanolamine salt, diethanolamine salt, triethanolamine salt and the like
- alkylamine salts such as methylamine salt, ethylamine salt, propylamine salt and butylamine salt can be used.
- (meth) acrylic acid for example, acrylic acid, methacrylic acid and the like can be used. These compounds may be used alone or in combination of two or more.
- Examples of the (meth) acrylic acid ester include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate and isobutyl (meth) Acrylate, (meth) acrylic acid ester in the range of 1 to 4 carbon atoms such as ter-butyl (meth) acrylate; (meth) acrylate to which 3 to 60 moles of n-docosanol ethylene oxide are added, n-octadecanol (Meth) acrylate having 3 to 60 moles of ethylene oxide added, (meth) acrylate having an oxyethylene group such as (meth) acrylate having 3 to 60 moles of n-hexadecanol ethylene oxide added, etc.
- (meth) acrylic acid ester indicates acrylic acid ester and / or acrylic acid ester
- (meth) acrylate indicates acrylate and / or methacrylate.
- acrylic thickeners polyacrylates and / or (meth) acrylics are more preferable because they can form a porous structure more stably because the thickening effect is suitable for processability. It is preferable to use a polymer of an acid and a (meth) acrylic acid ester, and in particular, it is possible to form a longitudinally elongated cell and obtain a glove having more excellent flexibility and grip, and polyacrylic acid. Salt is more preferred.
- urethane thickener for example, one containing a urethane compound which is a reaction product of an oxyalkylene polyol, a polyisocyanate and a glycol compound having a carboxy group can be used.
- oxyalkylene polyol for example, a polymer of a polyhydric alcohol and an alkylene oxide can be used.
- polyhydric alcohol examples include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 1,5-pentanediol, and 2,2 -Dimethyl-1,3-propanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 1,8-octanediol, diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, cyclohexane Glycols such as -1, 4-diol, cyclohexane-1, 4-dimethanol; polyester polyols etc. can be used. These compounds may be used alone or in combination of two or more.
- alkylene oxide ethylene oxide, a propylene oxide, a butylene oxide, a styrene oxide etc. can be used, for example. These compounds may be used alone or in combination of two or more.
- polyethylene glycol from the viewpoint of production stability and thickening property, among the above-mentioned.
- the number average molecular weight of the polyoxyalkylene polyol is preferably in the range of 2,000 to 12,000, and preferably in the range of 2,500 to 10,000, from the viewpoint of improvement in processing suitability when adjusting the compounding solution. It is more preferable that In addition, the number average molecular weight of the said polyoxyalkylene polyol shows the value measured similarly to the number average molecular weight of the said polyol (a1).
- polystyrene resin may be used in combination with other polyols.
- a polycarbonate polyol such as polyethylene glycol, polypropylene glycol, polyethylene glycol, polypropylene glycol, etc.
- polyester polyol such as polyethylene glycol
- polyacryl polyol such as polyacryl polyol
- polybutadiene polyol etc. such as polybutadiene polyol etc.
- These polyols may be used alone or in combination of two or more.
- polyisocyanate examples include aromatic polyisocyanates such as phenylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, carbodiimidated diphenylmethane polyisocyanate, etc .; hexamethylene diisocyanate, lysine diisocyanate, cyclohexane diisocyanate, isophorone Aliphatic or alicyclic polyisocyanates such as diisocyanate, dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethyl xylylene diisocyanate, dimer acid diisocyanate and norbornene diisocyanate can be used. These polyisocyanates may be used alone or in combination of two or more.
- glycol compound having a carboxy group for example, 2,2-dimethylol propionic acid, 2,2-dimethylol butanoic acid, 2,2-dimethylol butyric acid, 2,2 valeric acid and the like can be used. These compounds may be used alone or in combination of two or more.
- the terminal of the urethane compound may be a hydrophobic group by using a compound further having a hydroxyl group or an amino group and a hydrophobic group as the urethane compound.
- Examples of the compound having a hydroxyl group or an amino group and a hydrophobic group include 2-butyl-1-octanol, 2-butyl-1-decanol, 2-hexyl-1-octanol and 2-hexyl-1-decanol.
- Branched aliphatic alcohols such as isononyl alcohol, isodecyl alcohol, isoundecyl alcohol; 1-hexadecanol, 1-tetradecanol, 1-dodecanol, 1-undecanol, 1-decanol, 1-nonanol, 1- Linear aliphatic alcohols such as octanol and 1-hexanol; alkyl aryl alcohols such as nonylphenol and tristyrylphenol; aliphatic amines such as 1-decylamine, 1-octylamine, 1-hexylamine, dioctylamine and dihexylamine; Polyethylene glycol Polyalkylene glycol monoalkyl ethers such as alkyl ethers (the number of carbon atoms in the alkyl group is 8 to 24), polypropylene glycol monoalkyl ethers (the number of carbon atoms in the alkyl group is 8 to 24); polyethylene glycol
- the weight average molecular weight of the urethane compound is preferably in the range of 2,000 to 100,000, and more preferably in the range of 10,000 to 90,000, from the viewpoint of being able to form an even better porous structure.
- the range of 20,000 to 80,000 is more preferable.
- the weight average molecular weight of the said urethane compound shows the value measured similarly to the said polyol (a1).
- the urethane thickener may contain an additive in addition to the urethane compound.
- an additive for example, an aqueous medium, an emulsifying agent, an antifoaming agent, a dispersing agent and the like can be used. These additives may be used alone or in combination of two or more.
- said emulsifier the same thing as the said emulsifier which can be used when manufacturing the said aqueous
- a urethane thickener as the thickener (B), as a method of adjusting the content of the oxyethylene group, for example, a polyoxyalkylene polyol used as a raw material having a low content of the oxyethylene group
- the method to be used, the method to reduce the amount of polyethylene glycol used, the method to use an emulsifier having a low content of oxyethylene group, the method to reduce the amount of emulsifier having an oxyethylene group, etc. may be mentioned.
- the viscosity is preferably increased to a viscosity of 400 mPa ⁇ s or more, more preferably in a range of 450 to 200,000 mPa ⁇ s, and still more preferably in a range of 500 to 15,000 mPa ⁇ s.
- water-based urethane resin composition (including a thickener) after thickening shows the value measured with a B-type viscometer (M3 rotor, 30 rotations) at 25 degreeC.
- a B-type viscometer M3 rotor, 30 rotations
- salt coagulation mentioned later, after degassing using the degassing machine etc. after the said thickening.
- the thickener (B) and the aqueous urethane resin composition may be contacted, for example, the (B) And the aqueous urethane resin composition.
- a stirring rod, a mechanical mixer or the like can be used for the mixing.
- salt coagulation mentioned later it is preferable to perform salt coagulation mentioned later, after degassing using the degassing machine etc. after the said thickening.
- a fiber knitting glove is dipped in the thickened compound solution and then a coagulation bath (c-1) containing a metal salt (c-1) C) or (ii) a method of coagulating a urethane resin by immersing a fiber knitted glove soaked in a coagulation bath (C) containing a metal salt (c-1) in advance in a thickened compounding solution
- a coagulation bath c-1 containing a metal salt (c-1) C
- a method of coagulating a urethane resin by immersing a fiber knitted glove soaked in a coagulation bath (C) containing a metal salt (c-1) in advance in a thickened compounding solution
- the immersion time is, for example, 1 second to 30 minutes.
- said fiber knitting glove what was comprised not only with the said nylon fiber but a polyester fiber, an aramid fiber, a polyethylene fiber, cotton, etc. can be used. Also, instead of the knitting, a woven fabric of the fibers can be used. In addition, when manufacturing a glove, it is preferable that these fiber knitting gloves are mounted
- the metal salt (c-1) for example, calcium nitrate, calcium chloride, zinc nitrate, zinc chloride, magnesium acetate, aluminum sulfate, sodium chloride and the like can be used. These metal salts may be used alone or in combination of two or more. Among these, calcium nitrate is preferably used from the viewpoint that the solidification property can be further improved by the magnitude of the electric double layer compression effect.
- the coagulation bath (C) may contain a solvent in addition to the metal salt (c-1).
- the content of the metal salt (c-1) in the coagulation bath (C) is preferably in the range of 1 to 40% by mass, and preferably 2 to 30% by mass, in order to achieve good salt coagulation. The range is more preferred.
- the coagulated material may be immersed in water, for example, for 10 minutes to 8 hours, or immersed in running water to wash away unnecessary coagulant, if necessary. Furthermore, it may be dried with hot air, for example, at 60 to 120 ° C. for 1 minute to 3 hours.
- a coagulated film of a urethane resin having a porous structure can be easily formed on a fiber-woven glove, without passing through a heating or foaming step for an aqueous urethane resin composition, A glove excellent in flexibility and grip can be obtained.
- Preparation Example 1 Preparation of Aqueous Urethane Resin Composition (X-1) In a nitrogen-substituted container equipped with a thermometer, nitrogen gas, an introducing pipe, and a stirrer, polytetramethylene ether glycol (number average molecular weight; 2000) 500 parts by mass, 25 parts by mass of 2,2′-dimethylol propionic acid (hereinafter abbreviated as “DMPA”), 128 parts by mass of dicyclohexylmethane diisocyanate (hereinafter abbreviated as “H 12 MDI”), and methyl ethyl ketone By reacting at 70 ° C.
- DMPA 2,2′-dimethylol propionic acid
- H 12 MDI dicyclohexylmethane diisocyanate
- a methyl ethyl ketone solution of a urethane prepolymer having an isocyanate group at an end was obtained.
- 23 parts by mass of triethylamine as a neutralizing agent was added to the organic solvent solution of the urethane prepolymer and stirred, and then 830 parts by mass of water was further added and stirred to obtain an emulsion in which the urethane prepolymer was dispersed in water. .
- the obtained emulsion and 3.2 parts by mass of a chain extender aqueous solution containing 2.6 parts by mass of hydrazine were mixed and subjected to chain extension reaction to obtain an aqueous dispersion of a urethane resin (A-1). Subsequently, the aqueous dispersion was subjected to solvent removal to obtain an aqueous urethane resin composition (X-1) having a nonvolatile content of 30% by mass.
- Preparation Example 2 Preparation of Aqueous Urethane Resin Composition (X-2) In a nitrogen-substituted container equipped with a thermometer, nitrogen gas, an introducing pipe, and a stirrer, polycarbonate diol (manufactured by Ube Industries, Ltd. “Etanacol” UH-200 ′ ′, number average molecular weight; 2000) 250 parts by weight, DMPA 18 parts by weight, H 12 MDI 90 parts by weight, and methyl ethyl ketone 236 parts by weight, react at 70 ° C.
- polycarbonate diol manufactured by Ube Industries, Ltd. “Etanacol” UH-200 ′ ′, number average molecular weight; 2000
- DMPA 18 parts by weight 250 parts by weight
- H 12 MDI 90 parts by weight H 12 MDI 90 parts by weight
- methyl ethyl ketone 236 parts by weight react at 70 ° C.
- a methyl ethyl ketone solution of a urethane prepolymer having an isocyanate group at an end was obtained.
- 16 parts by mass of triethylamine as a neutralizing agent was added to the organic solvent solution of the urethane prepolymer and stirred, and then 797 parts by mass of water was added and stirred to obtain an emulsion in which the urethane prepolymer was dispersed in water. .
- the obtained emulsion was mixed with 6.3 parts by mass of a chain extender aqueous solution containing 5.0 parts by mass of hydrazine, and a chain elongation reaction was carried out to obtain an aqueous dispersion of a urethane resin (A-2).
- the aqueous dispersion was subjected to solvent removal to obtain an aqueous urethane resin composition (X-2) having a nonvolatile content of 35% by mass.
- Preparation Example 3 Preparation of Aqueous Polyurethane Composition (X-3) 1,6-Hexanediol (hereinafter “HG”) in a nitrogen-substituted container equipped with a thermometer, nitrogen gas, an introducing tube, and a stirrer. And 155 parts by mass, 137 parts by mass of neopentyl glycol, and 424 parts by mass of adipic acid were added, and they were melted at 120 ° C. Next, the temperature is raised to 220 ° C.
- HG Aqueous Polyurethane Composition
- HG 1,6-Hexanediol
- a methyl ethyl ketone solution (X-3-a) of polyester polyol having a carboxyl group of 70% by mass of nonvolatile content was added to prepare a methyl ethyl ketone solution (X-3-a) of polyester polyol having a carboxyl group of 70% by mass of nonvolatile content.
- Preparation Example 4 Preparation of Aqueous Polyurethane Composition (X′-1) Polytetramethylene glycol (manufactured by Mitsubishi Chemical Co., Ltd.) in a nitrogen-substituted container equipped with a thermometer, nitrogen gas, an introducing pipe, and a stirrer.
- Example 1 Carboxymethylcellulose ("Cerogen WS-C” manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., hereinafter abbreviated as "CMC") diluted to 10% by mass with water in 100 parts by mass of the aqueous urethane resin composition (X-1) 6 .3 parts by mass was stirred at 800 rpm for 10 minutes with a mechanical mixer and then defoamed using a centrifugal defoamer to prepare a compounded solution.
- the viscosity of the said compounded liquid was 2,600 mPa * s.
- the hand-made glove was attached to a nylon glove and dipped in a 5% by mass calcium nitrate aqueous solution for 3 minutes, and then pulled up. Subsequently, the fiber knitted glove was dipped in the thickened compound solution for 30 seconds to form a coagulated film of the urethane resin and then pulled up. Thereafter, the hand mold was immersed in water for 60 minutes and pulled up. The hand molds were then dried at 70 ° C. for 20 minutes and continuously dried at 120 ° C. for 30 minutes. Then, the knitted gloves were removed from the hand mold to obtain gloves having a film.
- Examples 2 to 7, Comparative Examples 1 to 4 A glove was produced in the same manner as Example 1, except that the type of the aqueous urethane resin composition used and the type and amount of the thickener (B) were changed as shown in Tables 1 to 3.
- the number average molecular weight of the polyol used in the adjustment example is a value measured by gel permeation chromatography (GPC) under the following conditions.
- Measuring device High-speed GPC device ("HLC-8220GPC” manufactured by Tosoh Corporation) Column: The following columns manufactured by Tosoh Corporation were used in series connection. "TSKgel G5000" (7.8 mm ID ⁇ 30 cm) ⁇ 1 "TSK gel G 4000” (7.8 mm ID ⁇ 30 cm) ⁇ 1 "TSK gel G 3000" (7.8 mm ID ⁇ 30 cm) ⁇ 1 This "TSKgel G2000" (7.8 mm ID ⁇ 30 cm) ⁇ 1 detector: RI (differential refractometer) Column temperature: 40 ° C Eluent: Tetrahydrofuran (THF) Flow rate: 1.0 mL / min Injection volume: 100 ⁇ L (tetrahydrofuran solution with a sample concentration of 0.4% by mass) Standard sample: A calibration curve was prepared using the following standard polystyrene.
- aqueous urethane resin composition obtained in the preparation example is dried, and 0.05 g to 0.5 g of the dried and solidified resin particles are weighed in a 300 mL Erlenmeyer flask, and then the mass ratio of tetrahydrofuran and ion exchanged water [tetrahydrofuran (About 80 mL of a mixed solvent of 80/20 with deionized water) was added to obtain a mixture thereof.
- the mixture is titrated with a 0.1 mol / L aqueous potassium hydroxide solution standardized in advance, and the amount of the aqueous potassium hydroxide solution used for the titration is calculated according to the following formula (2) According to the above, the acid value (mg KOH / g) of the aqueous urethane resin (A) was determined.
- Formula A (B ⁇ f ⁇ 5.611) / S (2)
- A is the solid acid value of the resin (mg KOH / g)
- B is the amount of 0.1 mol / L aqueous potassium hydroxide solution used for titration (mL)
- f is 0.1 mol / L aqueous potassium hydroxide solution
- S is the mass (g) of the resin particles
- 5.611 is the formula weight of potassium hydroxide (56.11 / 10).
- the gloves obtained by the method of the present invention were found to have excellent flexibility and grip. Moreover, it turned out that a porous structure and a longitudinally long cell can be easily formed using an aqueous
- Comparative Example 1 is an embodiment using a thickener in which the content of the oxyethylene group exceeds the range specified in the present invention instead of the thickener (B). And the flexibility and grip of the gloves were also poor.
- Comparative Example 2 is an embodiment using a nonionic urethane resin having no acid value instead of the aqueous urethane resin (A), but the resin did not coagulate.
- Comparative Example 3 is an embodiment in which the amount of the thickener (B) used is less than the range defined in the present invention, but it was found that the obtained coagulum did not form a porous structure. In addition, the desired thickening effect was not obtained, the coatability was extremely poor, it was extremely difficult to produce a uniform film, and the obtained glove was also poor in flexibility and grip.
- Comparative Example 4 is an embodiment in which the amount of the thickener (B) used exceeds the range specified in the present invention, but the obtained coagulated material does not form a porous structure, and the flexibility and grip of the glove are obtained. Was also bad.
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Abstract
Description
温度計、窒素ガス、導入管、及び撹拌機を備えた窒素置換された容器中で、ポリテトラメチレンエーテルグリコール(数平均分子量;2000)500質量部、2,2’-ジメチロールプロピオン酸(以下「DMPA」と略記する。)25質量部、ジシクロヘキシルメタンジイソシアネート(以下「H12MDI」と略記する。)128質量部、及びメチルエチルケトン620質量部の存在下、反応物の規定のNCO%に達する時点まで70℃で反応させることによって、末端にイソシアネート基を有するウレタンプレポリマーのメチルエチルケトン溶液を得た。
次いで、前記ウレタンプレポリマーの有機溶剤溶液に、中和剤としてトリエチルアミン23質量部加えて攪拌し、更に水830質量部加え撹拌することにより、前記ウレタンプレポリマーが水に分散した乳化液を得た。
得られた乳化液とヒドラジン2.6質量部を含む鎖伸長剤水溶液3.2質量部とを混合し鎖伸長反応することによってウレタン樹脂(A-1)の水分散体を得た。次いで、この水分散体を脱溶剤することにより、不揮発分;30質量%の水性ウレタン樹脂組成物(X-1)を得た。
温度計、窒素ガス、導入管、及び撹拌機を備えた窒素置換された容器中で、ポリカーボネートジオール(宇部興産株式会社製「エタナコールUH-200」、数平均分子量;2000)250質量部、DMPA18質量部、H12MDI90質量部、及びメチルエチルケトン236質量部の存在下、反応物の規定のNCO%に達する時点まで70℃で反応させることによって、末端にイソシアネート基を有するウレタンプレポリマーのメチルエチルケトン溶液を得た。
次いで、前記ウレタンプレポリマーの有機溶剤溶液に、中和剤としてトリエチルアミン16質量部加えて攪拌し、更に水797質量部加え撹拌することにより、前記ウレタンプレポリマーが水に分散した乳化液を得た。
得られた乳化液とヒドラジン5.0質量部を含む鎖伸長剤水溶液6.3質量部とを混合し鎖伸長反応することによってウレタン樹脂(A-2)の水分散体を得た。次いで、この水分散体を脱溶剤することにより、不揮発分;35質量%の水性ウレタン樹脂組成物(X-2)を得た。
温度計、窒素ガス、導入管、及び撹拌機を備えた窒素置換された容器中で、1,6-ヘキサンジオール(以下「HG」と略記する。)155質量部、ネオペンチルグリコール137質量部、アジピン酸424質量部添加し、120℃でそれらを溶融した。次いで、撹拌しながら3時間~4時間かけて220℃へ昇温し5時間保持した後、150℃まで冷却した後、DMPAを88質量部添加し、150℃で撹拌しながら5時間~10時間保持した後、メチルエチルケトン300質量部添加することによって、不揮発分70量%のカルボキシル基を有するポリエステルポリオールのメチルエチルケトン溶液(X-3-a)を調製した。
温度計、窒素ガス、導入管、及び撹拌機を備えた窒素置換された容器中で、上記カルボキシル基を有するポリエステルポリオール(X-3-a)のメチルエチルケトン溶液198質量部、ポリエステルポリオール(DIC株式会社製「クリスボンCMA-654」、数平均分子量;1,500)160質量部、HG19質量部、トリレンジイソシアネート75質量部、及びメチルエチルケトン152質量部の存在下、反応物の規定のNCO%に達する時点まで70℃で反応させることによって、末端にイソシアネート基を有するウレタンプレポリマーのメチルエチルケトン溶液を得た。
次いで、ウレタンプレポリマーの有機溶剤溶液に、中和剤としてトリエチルアミン17.2質量部加えて攪拌し、更に水を653質量部、ピペラジン7.7質量部を加え混合し鎖伸長反応することによってウレタン樹脂(A-3)の水分散体を得た。次いで、この水分散体を脱溶剤することにより、不揮発分;40質量%の水性ウレタン樹脂組成物(X-3)を得た。
温度計、窒素ガス、導入管、及び撹拌機を備えた窒素置換された容器中で、ポリテトラメチレングリコール(三菱化学株式会社製、数平均分子量:2,000)1,000質量部、日油株式会社製「ユニルーブ75DE-60」(ポリオキシエチレンオキシプロピレングリコール、ポリオキシエチレン構造/ポリオキシプロピレン構造(質量割合)=75/25、数平均分子量:約3,000)50質量部、日油株式会社製「ユニルーブ75MB-900」(ポリオキシエチレンオキシプロピレングリコールモノブチルエーテル、ポリオキシエチレン構造/ポリオキシプロピレン構造(質量割合)=75/25、数平均分子量約3,400)50質量部、H12MDI183質量部、及びメチルエチルケトン1,283質量部の存在下、反応物の規定のNCO%に達する時点まで70℃で反応させることによって、末端にイソシアネート基を有するウレタンプレポリマーのメチルエチルケトン溶液を得た。
次いで、ウレタンプレポリマーの有機溶剤溶液に、水を2,566質量部加え撹拌することにより、水性ウレタン樹脂の水分散体を得た。得られた乳化液と、ピペラジン13.5質量部を含む鎖伸長剤水溶液135質量部とを混合し鎖伸長反応することによってウレタン樹脂(A’-1)の水分散体を得た。次いで、この水分散体を脱溶剤することにより、不揮発分;40質量%の水性ウレタン樹脂組成物(X’-1)を得た。
水性ウレタン樹脂組成物(X-1)100質量部に、水で10質量%に希釈したカルボキシメチルセルロース(第一工業製薬株式会社製「セロゲンWS-C」、以下「CMC」と略記する。)6.3質量部をメカニカルミキサーにて800rpmで10分間撹拌し、次いで遠心脱泡器を使用して脱泡させて配合液を作製した。前記配合液(増粘剤を含む水性ウレタン樹脂組成物)の粘度は、2,600mPa・sであった。
手型にナイロン繊維による編み手袋を装着し、5質量%の硝酸カルシウム水溶液中に3分間浸漬させた後、引きあげた。次いで、前記増粘させた配合液中に繊維編み手袋を30秒浸漬させ、ウレタン樹脂の凝固皮膜を形成させた後に引き上げた。その後、該手型を水に60分間浸漬させ引きあげた。次いで、該手型を70℃で20分間乾燥し、連続して120℃で30分間乾燥させた。次いで、手型から編み手袋を取り出し、皮膜を有する手袋を得た。
用いる水性ウレタン樹脂組成物の種類、増粘剤(B)の種類、及び量を表1~3に示す通りに変更した以外は、実施例1と同様にして手袋を作製した。
調整例で使用したポリオールの数平均分子量は、ゲル・パーミエーション・クロマトグラフィー(GPC)法により、下記の条件で測定した値を示す。
カラム:東ソー株式会社製の下記のカラムを直列に接続して使用した。
「TSKgel G5000」(7.8mmI.D.×30cm)×1本
「TSKgel G4000」(7.8mmI.D.×30cm)×1本
「TSKgel G3000」(7.8mmI.D.×30cm)×1本
「TSKgel G2000」(7.8mmI.D.×30cm)×1本
検出器:RI(示差屈折計)
カラム温度:40℃
溶離液:テトラヒドロフラン(THF)
流速:1.0mL/分
注入量:100μL(試料濃度0.4質量%のテトラヒドロフラン溶液)
標準試料:下記の標準ポリスチレンを用いて検量線を作成した。
東ソー株式会社製「TSKgel 標準ポリスチレン A-500」
東ソー株式会社製「TSKgel 標準ポリスチレン A-1000」
東ソー株式会社製「TSKgel 標準ポリスチレン A-2500」
東ソー株式会社製「TSKgel 標準ポリスチレン A-5000」
東ソー株式会社製「TSKgel 標準ポリスチレン F-1」
東ソー株式会社製「TSKgel 標準ポリスチレン F-2」
東ソー株式会社製「TSKgel 標準ポリスチレン F-4」
東ソー株式会社製「TSKgel 標準ポリスチレン F-10」
東ソー株式会社製「TSKgel 標準ポリスチレン F-20」
東ソー株式会社製「TSKgel 標準ポリスチレン F-40」
東ソー株式会社製「TSKgel 標準ポリスチレン F-80」
東ソー株式会社製「TSKgel 標準ポリスチレン F-128」
東ソー株式会社製「TSKgel 標準ポリスチレン F-288」
東ソー株式会社製「TSKgel 標準ポリスチレン F-550」
調製例にて得た水性ウレタン樹脂組成物をレーザー回折/散乱式粒度分布測定装置(株式会社堀場製作所製「LA-910」)を使用して、分散液として水を使用し、相対屈折率=1.10、粒子径基準が面積の時の平均粒子径を測定した。
調整例にて得た水性ウレタン樹脂組成物を乾燥し、乾燥固化した樹脂粒子の0.05g~0.5gを、300mL三角フラスコに秤量し、次いで、テトラヒドロフランとイオン交換水との質量割合[テトラヒドロフラン/イオン交換水]が80/20の混合溶媒約80mLを加えそれらの混合液を得た。
次いで、前記混合液にフェノールフタレイン指示薬を混合した後、あらかじめ標定された0.1mol/Lの水酸化カリウム水溶液で滴定し、滴定に用いた水酸化カリウム水溶液の量から下記計算式(2)に従い、水性ウレタン樹脂(A)の酸価(mgKOH/g)を求めた。
計算式 A=(B×f×5.611)/S (2)
式中、Aは樹脂の固形分酸価(mgKOH/g)、Bは滴定に用いた0.1mol/L水酸化カリウム水溶液の量(mL)、fは0.1mol/L水酸化カリウム水溶液のファクター、Sは樹脂粒子の質量(g)、5.611は水酸化カリウムの式量(56.11/10)である。
実施例及び比較例で得られた手袋を、日立ハイテクテクノロジー株式会社製走査型電子顕微鏡「SU3500」(倍率:2,000倍)を使用して観察し、以下のように評価した。
「A」;電子顕微鏡写真の手袋の断面図において、縦長状のセルが多数確認される。
「B」;電子顕微鏡写真の手袋の断面図において、孔が多数確認される。
「C」;上記以外のもの。
実施例及び比較例で得られた手袋を手に装着し、指を曲げ伸ばしたときの感触により以下のように評価した。なお、樹脂が凝固しなかったものは、柔軟性の評価ができなかったため、「-」とした。
「A」;ソフト感、指の動かしやすさ共に優れている。
「B」;ソフト感、指の動かしやすさが感じられる。
「C」;ソフト感、指の動かしやすさがやや劣る。
「D」;ソフト感、指の動かしやすさが全く感じられない。
実施例及び比較例で得られた手袋を手に装着し、机(メラニン化粧板)をこすった時の感触により以下のように評価した。なお、樹脂が凝固しなかったものは、グリップ性の評価ができなかったため、「-」とした。
「A」;グリップ感に優れている。
「B」;グリップ感が感じられる。
「C」;グリップ感がやや劣る。
「D」;グリップ感が全く感じられない。
・「ALA」:Borcher社製「Borch Gel ALA」、ポリアクリル酸のナトリウム塩
・「MC」:メチルセルロース
・「L75N」:Borchers社「Borch Gel L75N」(1,6-ヘキサンジイソシアネート、数平均分子量が3,000のポリエチレングリコール及び数平均分子量が6,000のポリエチレングリコールの反応物と、ポリオキシエチレンジスチレン化フェニルエーテルと、アセチレングリコールと、水(含有率:50質量%)とを含むもの、オキシエチレン基の含有量:1.6×10-2mol/g)
・「T10」:DIC株式会社製「アシスター T10」(1,6-ヘキサンジイソシアネート及び数平均分子量が6,000のポリエチレングリコールの反応物と、ポリオキシエチレンジスチレン化フェニルエーテルと、水(含有率:75質量%)とを含むもの、オキシエチレン基の含有量:2.1×10-2mol/g)
Claims (3)
- 酸価が0.01mgKOH/g以上の水性ウレタン樹脂(A)を含む水性ウレタン樹脂組成物に、
オキシエチレン基の含有量が2×10-2mol/g以下の増粘剤(B)を、
前記水性ウレタン樹脂(A)100質量部に対して0.01~30質量部の範囲で加えて増粘させた液を得た後、
(i)増粘させた液に繊維編み手袋を浸漬させ、次いで、金属塩(c-1)を含む凝固浴(C)で凝固する、又は、
(ii)あらかじめ金属塩(c-1)を含む凝固浴(C)に浸漬させた繊維編み手袋を、増粘させた液に浸漬させ凝固することを特徴とする手袋の製造方法。 - 前記増粘剤(B)が、セルロース増粘剤、アクリル増粘剤、及び、ウレタン増粘剤からなる群より選ばれる1種以上である請求項1記載の手袋の製造方法。
- 前記金属塩(c-1)が、硝酸カルシウムである請求項1又は2記載の手袋の製造方法。
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US16/646,513 US20200268081A1 (en) | 2017-09-14 | 2018-08-09 | Method for manufacturing gloves |
JP2018557955A JP6540914B1 (ja) | 2017-09-14 | 2018-08-09 | 手袋の製造方法 |
KR1020207006135A KR102365989B1 (ko) | 2017-09-14 | 2018-08-09 | 장갑의 제조 방법 |
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