WO2021084954A1 - 繊維基材、及び、人工皮革 - Google Patents
繊維基材、及び、人工皮革 Download PDFInfo
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- WO2021084954A1 WO2021084954A1 PCT/JP2020/035178 JP2020035178W WO2021084954A1 WO 2021084954 A1 WO2021084954 A1 WO 2021084954A1 JP 2020035178 W JP2020035178 W JP 2020035178W WO 2021084954 A1 WO2021084954 A1 WO 2021084954A1
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- Prior art keywords
- urethane resin
- mass
- base material
- fiber base
- parts
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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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
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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
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Definitions
- the present invention relates to a fiber base material filled with urethane resin and artificial leather.
- Urethane resin is widely used in the manufacture of synthetic leather, artificial leather, coating agents, adhesives, gloves, clothing, etc. due to its mechanical strength and good texture.
- a non-woven fabric base material is impregnated with a solvent-based urethane resin composition and wet-coagulated to obtain a uniform and flexible base material in which the voids in the non-woven fabric fibers are filled with urethane porous material. It is common to form.
- the solvent-based urethane resin composition uses N, N-dimethylformamide (DMF) as a solvent, but the DMF is concerned about adverse effects on the living body and the environment, and legal regulations are becoming stricter year by year. Therefore, environmental survey measures such as weak solvent, water-based, and solvent-free are required.
- DMF N, N-dimethylformamide
- polyurethane dispersion in which urethane resin is dispersed in water has begun to be used for artificial leather applications.
- the PUD is not porous in the filled state inside the fiber base material, and the urethane resin segregates on the surface of the fiber base material in the water drying step.
- the texture is hard.
- the problem to be solved by the present invention is to provide a fiber base material having an excellent urethane resin filling state and an excellent texture.
- the present invention is a fiber base material filled with a urethane resin (X) formed of an aqueous dispersion of a urethane resin (X), and the content of the urethane resin (X) in the aqueous dispersion is determined. It provides a fiber base material having a content of 50 to 80% by mass and that the aqueous dispersion does not contain an organic solvent.
- the present invention also provides artificial leather characterized by having the fiber base material.
- the fiber base material of the present invention is excellent in the state of being filled with urethane resin and has an excellent texture. Therefore, the fiber base material of the present invention can be particularly preferably used as artificial leather.
- the fiber base material of the present invention is filled with urethane resin (X) formed of an aqueous dispersion of urethane resin (X).
- the aqueous dispersion of the urethane resin (X) has a urethane resin (X) content of 50 to 80% by mass and does not contain an organic solvent.
- the content of the urethane resin (X) is in the range of 50 to 80% by mass.
- the so-called urethane resin (X) solid content in the aqueous dispersion is high, the retention of bubbles formed by mechanical foaming or gas introduction is excellent, and the drying property of the urethane resin aqueous dispersion is improved.
- the urethane resin (X) is well filled inside the fiber base material, and the cured product of the urethane resin (X) does not crack during and / or after drying. Adhesion and mechanical strength can be obtained.
- the content of the urethane resin (X) is preferably in the range of 53 to 70% by mass, preferably in the range of 55 to 70% by mass, from the viewpoint of obtaining an even more excellent filling state, texture, and mechanical strength. More preferably, the range of 57 to 65% by mass is further preferable.
- the urethane resin (X) can be dispersed in water, and is, for example, a urethane resin having a hydrophilic group such as an anionic group, a cationic group, or a nonionic group; a urethane forcibly dispersed in water with an emulsifier.
- a resin or the like can be used.
- These urethane resins may be used alone or in combination of two or more.
- a urethane resin having a hydrophilic group is preferably used, and a urethane resin having an anionic group and / or a nonionic group is more preferable from the viewpoint of production stability and water dispersion stability.
- Examples of the method for obtaining the urethane resin having an anionic group include a method using as a raw material one or more compounds selected from the group consisting of a glycol compound having a carboxyl group and a compound having a sulfonyl group.
- glycol compound having a carboxyl group examples include 2,2-dimethylolpropionic acid, 2,2-dimethylolbutanoic acid, 2,2-dimethylolbutyric acid, 2,2-dimethylolpropionic acid, and 2,2-.
- Valeric acid and the like can be used. These compounds may be used alone or in combination of two or more.
- Examples of the compound having a sulfonyl group include 3,4-diaminobutanesulfonic acid, 3,6-diamino-2-toluenesulfonic acid, 2,6-diaminobenzenesulfonic acid, and N- (2-aminoethyl)-.
- Examples of the method for obtaining the urethane resin having a nonionic group include a method using a compound having an oxyethylene structure as a raw material.
- a polyether polyol having an oxyethylene structure such as polyethylene glycol, polyoxyethylene polyoxypropylene glycol, polyoxyethylene polyoxytetramethylene glycol, and polyethylene glycol dimethyl ether can be used. .. These compounds may be used alone or in combination of two or more. Among these, polyethylene glycol and / or polyethylene glycol dimethyl ether is preferably used from the viewpoint that hydrophilicity can be controlled more easily.
- the number average molecular weight of the raw material used to obtain the urethane resin having a nonionic group is in the range of 200 to 10,000 from the viewpoint of obtaining even more excellent emulsifying property and water dispersion stability. Is preferable, the range of 300 to 3,000 is more preferable, and the range of 300 to 2,000 is more preferable.
- the number average molecular weight of the raw material used to obtain the urethane resin having a nonionic group is a value measured by a gel permeation column chromatography (GPC) method.
- Examples of the method for obtaining the urethane resin having a cationic group include a method using one or more compounds having an amino group as a raw material.
- Examples of the compound having an amino group include compounds having primary and secondary amino groups such as triethylenetetramine and diethylenetriamine; N-alkyldialkanolamines such as N-methyldiethanolamine and N-ethyldiethanolamine, and N-methyl.
- Compounds having a tertiary amino group such as N-alkyldiaminoalkylamine such as diaminoethylamine and N-ethyldiaminoethylamine can be used. These compounds may be used alone or in combination of two or more.
- Examples of the emulsifier that can be used to obtain the urethane resin that is forcibly dispersed in water include polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyethylene styrylphenyl ether, and polyoxyethylene sorbitol tetraole.
- Nonionic emulsifiers such as ate and polyethylene / polypropylene copolymers; fatty acid salts such as sodium oleate, alkyl sulfates, alkylbenzene sulfates, alkyl sulfosuccinates, naphthalence sulfates, polyoxyethylene alkyl sulfates, alkanes.
- Anionic emulsifiers such as sulfonate sodium salt and alkyldiphenyl ether sulfonic acid sodium salt; cationic emulsifiers such as alkylamine salt, alkyltrimethylammonium salt and alkyldimethylbenzylammonium salt can be used. These emulsifiers may be used alone or in combination of two or more.
- the urethane resin (X) include a chain extender (a1), a polyol (a2), a polyisocyanate (a3), and, if necessary, a compound (a4) having a hydrophilic group.
- a chain extender (a1) a polyol (a2), a polyisocyanate (a3), and, if necessary, a compound (a4) having a hydrophilic group.
- a4 having a hydrophilic group.
- the above-mentioned urethane resin having an anionic group, a urethane resin having a cationic group, and a raw material used for obtaining a urethane resin having a nonionic group can be used.
- chain extender (a1) one having a molecular weight of less than 500 (preferably in the range of 50 to 450) can be used, and specifically, ethylene glycol, diethylene recall, triethylene glycol, propylene glycol, and diamine.
- the chain can be easily extended even at a relatively low temperature of 30 ° C. or lower, energy consumption during the reaction can be suppressed, and even more excellent mechanical strength due to the introduction of a urea group.
- a chain extender having an amino group hereinafter abbreviated as "amine-based chain extender”
- the urethane resin (X) is highly solid-differentiated.
- an amine-based chain extender having a molecular weight in the range of 30 to 250 from the viewpoint of obtaining even more excellent foam retention, emulsifying property, packed state, and aqueous dispersion stability.
- the molecular weight indicates an average value thereof, and the average value may be included in the range of the preferable molecular weight.
- the ratio of the chain extender (a1) used is that even more excellent mechanical strength, texture, peel strength, foam retention, filling state, emulsifying property, and water dispersion stability can be obtained, and urethane resin (urethane resin (a1).
- the polyol (a2) for example, a polyether polyol, a polyester polyol, a polyacrylic polyol, a polycarbonate polyol, a polybutadiene polyol, or the like can be used. These polyols may be used alone or in combination of two or more.
- the urethane resin having the nonionic group is used as the urethane resin (X)
- the polyol (a2) is a material other than the raw material used to obtain the urethane resin having the nonionic group. Use.
- the number average molecular weight of the polyol (a2) is preferably in the range of 500 to 100,000, more preferably in the range of 800 to 10,000, from the viewpoint of the mechanical strength of the obtained film.
- the number average molecular weight of the polyol (a2) indicates a value measured by a gel permeation column chromatography (GPC) method.
- the proportion of the polyol (a2) used is more preferably in the range of 40 to 90% by mass, more preferably 50 to 90% by mass, based on the total mass of the raw materials constituting the urethane resin (X), from the viewpoint of obtaining even more excellent mechanical strength.
- the range of 80% by mass is particularly preferable.
- polyisocyanate (a3) examples include aromatic polyisocyanates such as phenylenediocyanate, toluene diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, and carbodiimidated diphenylmethane polyisocyanate;
- An aliphatic polyisocyanate such as lysine diisocyanate, cyclohexanediisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, dimerate diisocyanate, norbornene diisocyanate, or alicyclic polyisocyanate can be used.
- aromatic polyisocyanates such as phenylenediocyanate, toluen
- the proportion of the polyisocyanate (a3) used is more preferably in the range of 5 to 40% by mass based on the total mass of the raw materials constituting the urethane resin (X) from the viewpoint of obtaining even more excellent mechanical strength.
- the range of ⁇ 35% by mass is particularly preferable.
- the urethane resin (X) is used from the viewpoint of obtaining even more excellent foam retention, emulsifying property, water dispersion stability, filling state, and texture. It is preferably 5% by mass or less, more preferably 2% by mass or less, further preferably 0.25 to 2% by mass, and 0.5 to 1.8% by mass based on the total mass of the constituent raw materials. Especially preferable.
- the average particle size of the urethane resin (X) is preferably in the range of 0.01 to 1 ⁇ m from the viewpoint of obtaining even more excellent foam retention, surface smoothness, texture, and filling state.
- the range of 0.05 to 0.9 ⁇ m is more preferable.
- the method for measuring the average particle size of the urethane resin (X) will be described in Examples described later.
- ion-exchanged water distilled water and the like can be used. These waters may be used alone or in combination of two or more.
- the urethane resin aqueous dispersion used in the present invention contains the urethane resin (X) and water as essential components, but may contain other additives as necessary.
- additives examples include emulsifiers, cross-linking agents, neutralizing agents, thickeners, urethanization catalysts, fillers, pigments, dyes, flame retardants, leveling agents, blocking inhibitors, film forming aids, and foaming agents. Agents and the like can be used. These additives may be used alone or in combination of two or more. These additives are appropriately determined depending on the purpose for which the foamed sheet is used.
- the urethane resin aqueous dispersion used in the present invention does not contain an organic solvent in the manufacturing process thereof, but it is permissible to contain an organic solvent as the additive.
- the polyol (a2), the polyisocyanate (a3), and the compound (a4) having a hydrophilic group are reacted in a solvent-free manner to produce isocyanate.
- a polyurethane prepolymer (i) having a group is obtained (hereinafter, abbreviated as "prepolymer step"), and then the urethane prepolymer (i) is dispersed in the water (hereinafter, abbreviated as "emulsification step”). ), followeded by a step of reacting the chain extender (a1) to obtain a urethane resin (X) (hereinafter, abbreviated as "chain extension step”).
- the prepolymer step is performed in the absence of a solvent.
- the prepolymer step was generally carried out in an organic solvent such as methyl ethyl ketone or acetone, but a solvent removal step of distilling off the organic solvent after the emulsification step is required, and actual production is required. It took several days of production at the site. Further, it is also difficult to completely distill off the organic solvent in the solvent removal step, and in many cases, a small amount of the organic solvent remains, and it is difficult to completely cope with the environment.
- the production method according to the present invention by performing the prepolymer step without a solvent, a urethane resin aqueous dispersion completely containing no organic solvent can be obtained, and the production step thereof can also be labor-saving. It is possible.
- the urethane resin may not be emulsified in the first place, or the particle size of the obtained urethane resin may become large even if it can be emulsified, which is good.
- the area where the urethane resin aqueous dispersion can be obtained is very limited. The reason for this has not been clarified in detail, but at the time of emulsification, an organic solvent, a neutralizing agent (for adjusting the acid value of the urethane resin having an anionic group), etc. are used as hydrophilic groups of the urethane resin. It is thought that one of the causes is the inhibition of the ability of.
- the amount of hydrophilic groups introduced is small and the chain extender is reacted, which is a region that was particularly difficult in the conventional method. It is possible to stably obtain an aqueous dispersion of a urethane resin having an average particle size equivalent to that of the conventional method.
- the total of the hydroxyl group of the polyol (a2), the hydroxyl group of the compound (a4) having a hydrophilic group, and the amino group, and the molar of the isocyanate group of the polyisocyanate (a3) is 1.1 to 1.1 to that further excellent foam retention, surface smoothness, filling state, texture, peeling strength, and mechanical strength can be obtained.
- the range of 3 is preferable, and the range of 1.2 to 2 is more preferable.
- the reaction of the prepolymer step may be carried out at 50 to 120 ° C. for 1 to 10 hours, for example.
- the prepolymer step is a reaction vessel equipped with a stirring blade; a kneader, a continuous kneader, a taper roll, a single-screw extruder, a twin-screw extruder, a triple-screw extruder, a universal mixer, a plast mill, a bodyda type kneader, etc. Kneaders; rotary dispersion mixers such as TK homomixers, fill mixes, ebara milders, claire mixes, ultra turlux, cavitrons, biomixers; ultrasonic dispersers; fluids without moving parts such as in-line mixers. This can be done by using a device or the like that can mix according to its own flow.
- the emulsification step is preferably carried out at a temperature at which water does not evaporate.
- the emulsification step may be carried out in the range of 10 to 90 ° C., and the emulsification step can be carried out using the same equipment as the prepolymer step. ..
- a kneader is preferable, and a twin-screw extruder is more preferable, because a urethane resin aqueous dispersion having a high urethane resin content can be easily obtained.
- the urethane prepolymer (i) is increased in molecular weight by the reaction of the isocyanate group of the urethane prepolymer (i) with the chain extender (a1) to obtain a urethane resin (X). It is a process.
- the temperature in the chain extension step is preferably 50 ° C. or lower from the viewpoint of productivity.
- the molar ratio [(hydroxyl group and amino group) / isocyanate group] of the isocyanate group of the urethane prepolymer (i) and the total of the hydroxyl groups and amino groups of the chain extender (a1) in the chain extension step Is preferably in the range of 0.8 to 1.1, and more preferably in the range of 0.9 to 1, from the viewpoint of obtaining an even more excellent filling state, texture, and mechanical strength.
- the chain extension step can be performed using the same equipment as the prepolymer step.
- the fiber base material can be produced by obtaining a foam liquid from the aqueous dispersion of the urethane resin (X), impregnating the fiber base material with the foam liquid, and drying the foam base material.
- the fiber base material examples include polyester fiber, polyethylene fiber, nylon fiber, acrylic fiber, polyurethane fiber, acetate fiber, rayon fiber, polylactic acid fiber, cotton, linen, silk, wool, glass fiber, carbon fiber, and the like.
- Non-woven fabrics made of blended fibers, woven fabrics, fiber base materials such as knitting, etc. can be used.
- Examples of the method for obtaining the foam liquid from the aqueous dispersion of the urethane resin (X) include a method of manually stirring, a method of using a mixer such as a mechanical mixer, and a method of introducing air or an inert gas. As a result, a porous body of urethane resin (X) entwined with the fiber inside the fiber base material is produced.
- a mixer for example, a method of stirring at 500 to 3,000 rpm for 10 seconds to 3 minutes can be mentioned.
- the volume is preferably 1.3 to 7 times, and 1.3 to 5 times the volume before and after foaming. Is more preferable, and the volume is further preferably 1.3 to 3 times.
- the foam liquid is applied to the fiber base material, and then the foam liquid is mechanically pushed into the fiber; the foam liquid is stored.
- Examples thereof include a method of immersing the fiber base material in a tank and squeezing excess material with a mangle or the like.
- Examples of the method of applying the foam liquid to the fiber base material include a method of using a roll coater, a knife coater, a comma coater, an applicator and the like. Further, as a method of pushing the foam liquid into the fiber, for example, a method of pushing the foam liquid from the upper side and / or the lower side of the fiber using a roll, a scraper or the like can be mentioned.
- Examples of the method for drying the impregnated material include a method of drying at a temperature of 60 to 130 ° C. for 30 seconds to 10 minutes.
- the artificial leather of the present invention has at least the above-mentioned fiber base material, and if necessary, a skin layer, a surface treatment layer, or the like may be provided on the artificial leather.
- a skin layer, a surface treatment layer, or the like may be provided on the artificial leather.
- known materials can be used as the material for forming the skin layer and the surface treatment layer.
- the flow rate of each of the feed solutions is A1: 10 kg / hour, triethylamine: 0.2 kg / hour, emulsifier aqueous solution: 2.0 kg / hour, water: 5.1 kg / hour, and the operating conditions of the twin-screw extruder are 50 ° C. and 260 rpm. It was. Immediately after that, an aqueous diluent of isophorone diamine (hereinafter abbreviated as "IPDA") having an amino group content corresponding to 95% of the NCO group was added to extend the chain, and finally the urethane resin content was 50. A mass% polyurethane emulsion (X-1) was obtained.
- IPDA isophorone diamine
- the flow rate of each of the feed solutions is A2: 10 kg / hour, triethylamine: 0.2 kg / hour, L-64: 0.5 kg / hour, water: 7.1 kg / hour, and the operating conditions of the twin-screw extruder are 50 ° C. and 260 rpm. there were.
- an aqueous diluent of IPDA having an amino group content corresponding to 95% of NCO groups was added to extend the chain, and finally a polyurethane emulsion (X-2) having a urethane resin content of 50% by mass was obtained. It was.
- the flow rates of each of the feed solutions were A3: 10 kg / hour, triethylamine: 0.2 kg / hour, water: 6.6 kg / hour, and the operating conditions of the twin-screw extruder were 50 ° C. and 260 rpm.
- an aqueous diluent of IPDA having an amino group content corresponding to 95% of NCO groups was added to extend the chain, and finally a polyurethane emulsion (X-3) having a urethane resin content of 50% by mass was obtained. It was.
- An emulsion was obtained by supplying and mixing at the same time.
- the flow rate of each of the feed liquids was A4: 10 kg / hour, the emulsifier aqueous solution: 2.0 kg / hour, water: 1.2 kg / hour, and the operating conditions of the twin-screw extruder were 50 ° C. and 260 rpm.
- the flow rates of each of the feed liquids were A5: 10 kg / hour, emulsifier: 0.5 kg / hour, water: 5.8 kg / hour, and the operating conditions of the twin-screw extruder were 50 ° C. and 260 rpm.
- an aqueous diluent of IPDA having an amino group content corresponding to 95% of NCO groups was added to extend the chain, and finally a polyurethane emulsion (X-5) having a urethane resin content of 50% by mass was obtained. It was.
- the flow rate of each of the feed liquids was A6: 10 kg / hour, water: 4.9 kg / hour, and the operating conditions of the twin-screw extruder were 50 ° C. and 260 rpm.
- an aqueous diluent of IPDA having an amino group content corresponding to 95% of NCO groups was added to extend the chain, and finally a polyurethane emulsion (X-6) having a urethane resin content of 50% by mass was obtained. It was.
- each supply liquid is A7: 10 kg / hour
- emulsifier aqueous solution S-20F 1.3 kg / hour
- emulsifier L-64 0.3 kg / hour
- water 1.1 kg / hour
- twin-screw extruder operating conditions It was 50 ° C. and 260 rpm.
- an aqueous diluent of ethylenediamine hereinafter abbreviated as "EA" having an amino group content corresponding to 95% of the NCO group was added to extend the chain, and finally the urethane resin content was 60% by mass.
- Polyurethane emulsion (X-7) was obtained.
- An emulsion was obtained by simultaneously supplying and mixing to (manufactured by a machine).
- the supply liquid and the twin-screw extruder operating conditions were the same as in Example 1, and an attempt was made to produce a polyurethane emulsion having a solid content concentration of 50%.
- the obtained emulsion immediately contained an amino group equivalent to 95% of the NCO group.
- An aqueous diluent of IPDA was added to extend the chain, but an emulsion could not be obtained due to gelation. Therefore, a polyurethane emulsion was produced by increasing the amount of water and lowering the solid content.
- the flow rate of each of the feed solutions is A'1: 10 kg / hour, triethylamine: 0.2 kg / hour, emulsifier aqueous solution: 2.5 kg / hour, water: 19.6 kg / hour, twin-screw extruder operating conditions of 50 ° C., 260 rpm. Met.
- an aqueous diluent of IPDA having an amino group content corresponding to 95% of NCO groups was added to extend the chain, and finally a polyurethane emulsion (XR-1) having a urethane resin content of 30% by mass was obtained. It was.
- the flow rate of each of the feed solutions is A'2: 10 kg / hour, triethylamine: 0.2 kg / hour, emulsifier aqueous solution: 0.5 kg / hour, water: 21.6 kg / hour, twin-screw extruder operating conditions of 50 ° C., 260 rpm. Met.
- an aqueous diluent of IPDA having an amino group content corresponding to 95% of NCO groups was added to extend the chain, and finally a polyurethane emulsion (XR-2) having a urethane resin content of 30% by mass was obtained. It was.
- the flow rate of each of the feed solutions is A'3: 10 kg / hour, triethylamine: 0.2 kg / hour, emulsifier aqueous solution: 0.5 kg / hour, water: 20.4 kg / hour, twin-screw extruder operating conditions of 50 ° C., 260 rpm. Met.
- an aqueous diluent of IPDA having an amino group content corresponding to 95% of NCO groups was added to extend the chain, and finally a polyurethane emulsion (XR-3) having a urethane resin content of 30% by mass was obtained. It was.
- aqueous diluent of IPDA having an amino group content was added to extend the chain, but an emulsion could not be obtained due to gelation. Therefore, a polyurethane emulsion was produced by increasing the amount of water and lowering the solid content.
- the flow rate of each of the feed liquids was A'5: 10 kg / hour, the emulsifier aqueous solution: 0.5 kg / hour, water: 11.3 kg / hour, and the operating conditions of the twin-screw extruder were 50 ° C. and 260 rpm.
- Example 1 A compounding solution obtained by stirring 1,000 parts by mass of the polyurethane emulsion (X-1) obtained in Synthesis Example 1 and 2 parts by mass of a thickener (“Borchi Gel ALA” manufactured by Borchers) with a mechanical mixer at 2,000 rpm. Created. Next, the above-mentioned compounding liquid and air were continuously supplied to a rotor-stator type continuous mixer (“MagicLab” manufactured by IKA) and mixed to obtain a foam liquid. At this time, the volume and weight of the compounding liquid were measured to calculate the density, and the amount of air supplied was adjusted so that the density of the foam liquid was 2/3.
- Examples 2 to 7, Comparative Examples 1 to 6 A fiber base material was obtained in the same manner as in Example 1 except that the type of polyurethane emulsion (X-1) used was changed as shown in Tables 1 and 2.
- the number average molecular weights of the polyols and the like used in the synthesis example and the comparative synthesis example show the values obtained by measuring under the following conditions by the gel permeation column chromatography (GPC) method.
- Measuring device High-speed GPC device ("HLC-8220GPC” manufactured by Tosoh Corporation) Column: The following columns manufactured by Tosoh Corporation were connected in series and used. "TSKgel G5000" (7.8 mm ID x 30 cm) x 1 "TSKgel G4000” (7.8 mm ID x 30 cm) x 1 "TSKgel G3000" (7.8 mm ID x 30 cm) x 1 This "TSKgel G2000" (7.8 mm ID x 30 cm) x 1 Detector: RI (Differential Refractometer) Column temperature: 40 ° C Eluent: tetrahydrofuran (THF) Flow rate: 1.0 mL / min Injection amount: 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.
- the fiber base material of the present invention was excellent in the state of being filled with urethane resin and had an excellent texture as in Examples 1 to 7.
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Abstract
Description
オクチル酸第一錫0.1質量部の存在下、ポリエーテルポリオール(三菱化学株式会社製「PTMG2000」、数平均分子量;2,000、以下「PTMG2000」と略記する。)1,000質量部と、2,2-ジメチロールプロピオン酸(以下、「DMPA」と略記する。)24質量部と、ジシクロヘキシルメタンジイソシアネート(以下、「HMDI」と略記する。)262質量部とをNCO%が2.1質量%に達するまで100℃で反応させてウレタンプレポリマーA1を得た。
70℃に加熱したA1とトリエチルアミン、乳化剤として、ドデシルベンゼンスルホン酸ナトリウム20質量%水溶液(第一工業製薬株式会社製「ネオゲンS-20F」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。供給液それぞれの流量はA1:10kg/時、トリエチルアミン:0.2kg/時、乳化剤水溶液:2.0kg/時、水:5.1kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のイソホロンジアミン(以下、「IPDA」と略記する。)の水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン(X-1)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、DMPA24質量部と、HMDI262質量部とをNCO%が2.1質量%に達するまで100℃で反応させてウレタンプレポリマーA2を得た。
70℃に加熱したA2とトリエチルアミン、乳化剤としてポリプロピレンポリエチレン共重合体(株式会社ADEKA製「プルロニックL-64」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。供給液それぞれの流量はA2:10kg/時、トリエチルアミン:0.2kg/時、L-64:0.5kg/時、水:7.1kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン(X-2)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、DMPA24質量部と、HMDI262質量部とをNCO%が2.1質量%に達するまで100℃で反応させてウレタンプレポリマーA3を得た。
70℃に加熱したA3とトリエチルアミン、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。供給液それぞれの流量はA3:10kg/時、トリエチルアミン:0.2kg/時、水:6.6kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン(X-3)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、ポリエチレングリコール(日油株式会社製「PEG600」、数平均分子量;600、以下「PEG」と略記する。)37.5質量部と、HMDI262質量部とをNCO%が2.8質量%に達するまで100℃で反応させてウレタンプレポリマーA4を得た。
70℃に加熱したA4と乳化剤としてドデシルベンゼンスルホン酸ナトリウム20質量%水溶液(第一工業製薬株式会社製「ネオゲンS-20F」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。供給液それぞれの流量はA4:10kg/時、乳化剤水溶液:2.0kg/時、水:1.2kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が58質量%のポリウレタンエマルジョン(X-4)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、PEGを18質量部と、HMDI262質量部とをNCO%が3.1質量%に達するまで100℃で反応させてウレタンプレポリマーA5を得た。
70℃に加熱したA5と乳化剤として、ポリプロピレンポリエチレン共重合体(株式会社ADEKA製「プルロニックL-64」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。供給液それぞれの流量はA5:10kg/時、乳化剤:0.5kg/時、水:5.8kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン(X-5)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、ポリエチレングリコールジメチルエーテル(日油株式会社製「M550」、数平均分子量;550、以下「MPEG」と略記する。)18質量部と、HMDI262質量部とをNCO%が3.3質量%に達するまで100℃で反応させてウレタンプレポリマーA6を得た。
70℃に加熱したA6と、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。供給液それぞれの流量はA6:10kg/時、水:4.9kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン(X-6)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、PEG18質量部と、HMDI262質量部とをNCO%が3.1質量%に達するまで100℃で反応させてウレタンプレポリマーA7を得た。
70℃に加熱したA7と乳化剤としてドデシルベンゼンスルホン酸ナトリウム20質量%水溶液(第一工業製薬株式会社製「ネオゲンS-20F」)、ポリプロピレンポリエチレン共重合体(株式会社ADEKA製「プルロニックL-64」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。供給液それぞれの流量はA7:10kg/時、乳化剤水溶液S-20F:1.3kg/時、乳化剤L-64:0.3kg/時、水:1.1kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のエチレンジアミン(以下「EA」と略記する。)の水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が60質量%のポリウレタンエマルジョン(X-7)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、DMPA34質量部と、HMDI262質量部とをNCO%が1.6質量%に達するまで100℃で反応させてウレタンプレポリマーA’1を得た。
70℃に加熱したA’1とトリエチルアミン、乳化剤としてドデシルベンゼンスルホン酸ナトリウム20質量%水溶液(第一工業製薬株式会社製「ネオゲンS-20F」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。
なお、供給液、二軸押出機運転条件を実施例1と同じくして固形分濃度50%のポリウレタンエマルジョン製造を試み、得られた乳化液に直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させたがゲル化するためエマルジョンを得ることができなかった。
そのため、水量を増やし固形分を下げてポリウレタンエマルジョンを製造した。供給液それぞれの流量はA’1:10kg/時、トリエチルアミン:0.2kg/時、乳化剤水溶液:2.5kg/時、水:19.6kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が30質量%のポリウレタンエマルジョン(XR-1)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、DMPA34質量部と、HMDI262質量部とをNCO%が1.6質量%に達するまで100℃で反応させてウレタンプレポリマーA’2を得た。
70℃に加熱したA’2とトリエチルアミン、乳化剤としてポリプロピレンポリエチレン共重合体(株式会社ADEKA製「プルロニックL-64」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。
なお、供給液、二軸押出機運転条件を実施例2と同じくしてウレタン樹脂の含有率50質量%のポリウレタンエマルジョン製造を試み、得られた乳化液に直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させたがゲル化するためエマルジョンを得ることができなかった。
そのため、水量を増やし固形分を下げてポリウレタンエマルジョンを製造した。供給液それぞれの流量はA’2:10kg/時、トリエチルアミン:0.2kg/時、乳化剤水溶液:0.5kg/時、水:21.6kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が30質量%のポリウレタンエマルジョン(XR-2)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、DMPA34質量部と、HMDI262質量部とをNCO%が1.6質量%に達するまで100℃で反応させてウレタンプレポリマーA’3を得た。
70℃に加熱したA’3とトリエチルアミン、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。
なお、供給液、二軸押出機運転条件を実施例3と同じくしてウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン製造を試み、得られた乳化液に直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させたがゲル化するためエマルジョンを得ることができなかった。
そのため、水量を増やし固形分を下げてポリウレタンエマルジョンを製造した。供給液それぞれの流量はA’3:10kg/時、トリエチルアミン:0.2kg/時、乳化剤水溶液:0.5kg/時、水:20.4kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が30質量%のポリウレタンエマルジョン(XR-3)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、PEG75質量部と、HMDI262質量部とをNCO%が2.4質量%に達するまで100℃で反応させてウレタンプレポリマーA’4を得た。
70℃に加熱したA’4と乳化剤としてドデシルベンゼンスルホン酸ナトリウム20質量%水溶液(第一工業製薬株式会社製「ネオゲンS-20F」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。
なお、供給液、二軸押出機運転条件を実施例4と同じくしてウレタン樹脂の含有率が60質量%のポリウレタンエマルジョン製造を試み、得られた乳化液に直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させたがゲル化するためエマルジョンを得ることができなかった。
そのため、水量を増やし固形分を下げてポリウレタンエマルジョンを製造した。供給液それぞれの流量はA’4:10kg/時、乳化剤水溶液:2.5kg/時、水:9.3kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が、40質量%のポリウレタンエマルジョン(XR-4)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、PEG75質量部と、HMDI262質量部とをNCO%が2.4質量%に達するまで100℃で反応させてウレタンプレポリマーA’5を得た。
70℃に加熱したA’5と乳化剤としてドデシルベンゼンスルホン酸ナトリウム20質量%水溶液(第一工業製薬株式会社製「ネオゲンS-20F」)、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。
なお、供給液、二軸押出機運転条件を実施例5と同じくしてウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン製造を試み、得られた乳化液に直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させたがゲル化するためエマルジョンを得ることができなかった。
そのため、水量を増やし固形分を下げてポリウレタンエマルジョンを製造した。供給液それぞれの流量はA’5:10kg/時、乳化剤水溶液:0.5kg/時、水:11.3kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が40質量%のポリウレタンエマルジョン(XR-5)を得た。
オクチル酸第一錫0.1質量部の存在下、PTMG2000を1,000質量部と、MPEG69質量部と、HMDI262質量部とをNCO%が2.8質量%に達するまで100℃で反応させてウレタンプレポリマーA’6を得た。
70℃に加熱したA’6と、水を二軸押出機(TEM-18SS:東芝機械製)に同時に供給、混合することで乳化液を得た。
なお、供給液、二軸押出機運転条件を実施例6と同じくしてウレタン樹脂の含有率が50質量%のポリウレタンエマルジョン製造を試み、得られた乳化液に直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させたがゲル化するためエマルジョンを得ることができなかった。
そのため、水量を増やし固形分を下げてポリウレタンエマルジョンを製造した。供給液それぞれの流量はA’6:10kg/時、水:10.3kg/時、二軸押出機運転条件は50℃、260rpmであった。
その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂の含有率が40質量%のポリウレタンエマルジョン(XR-6)を得た。
合成例1で得られたポリウレタンエマルジョン(X-1)1,000質量部、増粘剤(Borchers社製「Borchi Gel ALA」)2質量部をメカニカルミキサーで2,000rpmにて攪拌した配合液を作成した。次に、ローター・ステーター型の連続式混合器(IKA社製「MagicLab」)に上記配合液と空気とを連続供給し、混合して泡液を得た。この際、配合液の体積・重量を測定して密度を算出し、泡液の密度が2/3となるように空気の供給量を調整した。
ポリエステル不織布を得られた泡液中に浸し、次いで、ポリエステル不織布厚みと同じクリアランスに調整したマングルロールを使用して、泡液の含浸量を調整した後、熱風乾燥機にて、70℃で2分間、更に120℃で2分間乾燥することで、ウレタン樹脂が充填された繊維基材を得た。
用いるポリウレタンエマルジョン(X-1)の種類を表1~2に示す通りに変更した以外は、実施例1と同様にして繊維基材を得た。
合成例及び比較合成例で用いたポリオール等の数平均分子量は、ゲル・パーミエーション・カラムクロマトグラフィー(GPC)法により、下記の条件で測定し得られた値を示す。
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」
実施例及び比較例で得られたウレタン樹脂水分散体をレーザー回折/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。
不織布を泡液に浸しマングルロールにて泡液量を調整した後の不織布表面を目視観察により以下のように評価した。
「A」;泡を維持し、不織布表面に泡液の膜を形成している。
「B」;マングルロール使用後に泡がはじけて消失する様子がわずかに確認できる。
「C」;マングルロール使用後に泡がはじけて消失する様子が多く確認できる。
「D」;マングルロール使用後に泡が消失し、不織布の繊維が剥き出しになっている。
実施例及び比較例で得られた繊維基材の断面を走査型電子顕微鏡(日立ハイテクノロジー株式会社製「SU3500」、倍率200倍)を使用して観察し、以下のように評価した。
「T」;繊維基材内部で、ウレタン樹脂が多孔を形成している。
「F」;繊維基材内部で、ウレタン樹脂が多孔を形成していない。
得られた加工布を触感により以下のように評価した。
「A」;柔軟性に富む。
「B」;やや柔軟性がある。
「C」;柔軟性に劣る。
「D」;硬い。
得られた加工布を手で90°屈曲させた際の外観状態を目視観察により以下のように評価した。
「A」;曲線を描いて曲がり、シワを形成しない。
「B」;曲線を描いて曲がり、小さなシワを形成する。
「C」;鋭角に折れて、小さなシワを形成する。
「D」;鋭角に折れて大きなシワを形成する。
Claims (7)
- ウレタン樹脂(X)の水分散体により形成された、ウレタン樹脂(X)が充填された繊維基材であって、
前記水分散体中のウレタン樹脂(X)の含有率が、50~80質量%であり、かつ、前記水分散体が、有機溶剤を含まないものであることを特徴とする繊維基材。 - 前記ウレタン樹脂(X)が、鎖伸長剤(a1)を原料とするものである請求項1記載の繊維基材。
- 前記鎖伸長剤(a1)が、アミノ基を有するものである請求項2記載の繊維基材。
- 前記ウレタン樹脂(X)が、アニオン性基、及び/又は、ノニオン性基を有するものである請求項1~3のいずれか1項記載の繊維基材。
- 前記ウレタン樹脂(X)の平均粒子径が、0.01~1μmの範囲である請求項1~4のいずれか1項記載の繊維基材。
- 前記ウレタン樹脂(X)が、親水性基を有する化合物(a4)を原料とするものであり、前記化合物(a4)の使用割合が、ウレタン樹脂(X)を構成する原料の合計質量中5質量%以下である請求項1~5のいずれか1項記載の繊維基材。
- 請求項1~6のいずれか1項記載の繊維基材を有することを特徴とする人工皮革。
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JP2021529433A JP6981576B2 (ja) | 2019-10-28 | 2020-09-17 | 繊維基材、及び、人工皮革 |
KR1020227006128A KR20220037486A (ko) | 2019-10-28 | 2020-09-17 | 섬유 기재, 및, 인공 피혁 |
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