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    Production of thermoplastic polyurethane of excellent thermoformability
    32.
    发明专利
    Production of thermoplastic polyurethane of excellent thermoformability 失效
    生产具有优异热稳定性的热塑性聚氨酯

    公开(公告)号：JPS6128517A

    公开(公告)日：1986-02-08

    申请号：JP15063684

    申请日：1984-07-19

    Applicant: Kuraray Co Ltd

    Inventor： YAMASHITA SADAO ,  KOGAME KUNIO

    IPC: C08G12/00 ,  C08G18/10

    Abstract: PURPOSE: To obtain a thermoplastic polyurethane excellent in melt flow and thermoformability, by reacting a high-MW diol with an organic diisocyanate under specified conditions, adding a specified low-MW compound to the reaction system and reacting the mixture.
    CONSTITUTION: A prepolymer is made by reacting a high-MW diol of an average MW of 500W3,000 (e.g., polycaprolactonediol) with an organic diisocyanate (e.g., 4,4'-diphenylmethane diisocyanate) under conditions which simultaneously satisfy the relationships I, II and III, wherein r is a molar ratio of the NCO group to the OH group in the high MW diol in the reaction for making the prepolymer, and R is a molar ratio of the NCO group to the total reactive H atoms of the total polyurethane. This prepolymer is mixed with the balance of the organic diisocyanate and the obtained mixture is kneaded with a low-MW (

    Abstract translation: 目的：为了获得熔体流动性和热成型性优异的热塑性聚氨酯，通过在规定条件下使高分子量二醇与有机二异氰酸酯反应，向反应体系中加入规定的低分子量化合物并使混合物反应。 构成：通过使平均MW为500-3000的高分子量二醇（例如，聚己内酯二醇）与有机二异氰酸酯（例如4,4'-二苯基甲烷二异氰酸酯）反应，在同时满足I， II和III，其中r是制备预聚物的反应中高分子量二醇中的NCO基团与OH基团的摩尔比，R是NCO基团与总反应性H原子的总摩尔比 聚氨酯。 将该预聚物与余量的有机二异氰酸酯混合，将得到的混合物与具有两个活性氢原子的低MW（<500）化合物（例如乙烯 - 氯仿）混合。 在220℃下的MFR达到100之前停止该反应。以这种方式制备标题聚合物。

    PRODUCTION OF SHEET MATERIAL
    36.
    发明专利
    PRODUCTION OF SHEET MATERIAL 失效

    公开(公告)号：JPS5480368A

    公开(公告)日：1979-06-27

    申请号：JP14844977

    申请日：1977-12-09

    Applicant: KURARAY CO

    Inventor： KOGAME KUNIO ,  HARA KAZUO ,  TANBA YOSHIHIRO

    IPC: D06N3/14 ,  C08J9/28

    Abstract: PURPOSE:A liquid layer formed with a polyurethane composition containing small particles of polyurethane is dipped into a coagulation liquid to form a porous layer, thereby obtaining high gas and moisture-permeating sheets. CONSTITUTION:A polyurethane composition comprising (A) 5-20 parts by wt of a polyurethane of 3.0-6.5 wt% nitrogen content originating from isocyanate groups that is soluble in a solvent, or a polymer composition mainly consisting of a polyurethane, (B) 93-45 parts of a solvent dissolving (A), (C) 0.3-13 wt% of a fine polyurethane powder that has 4.5-7.0 wt% nitrogen content originating from isocyanate groups and is insoluble in nonionic solvents, (D) 1.0-13 parts of water, (E) at least one selected from 6-10C aromatic, aliphatic and alicylic hydrocarbons and (F) 0.3-2 parts of a surfactant and/or coagulation controller is coated on a base. Then the resulting liquid layer is dipped into a coagulation liquid consisting of nonsolvents to form porous sheet, washed and dried.

    NAP SHEET HAVING SUEDE LEATHER CHARACTERISTIC AND METHOD OF MAKING SAME
    37.
    发明专利
    NAP SHEET HAVING SUEDE LEATHER CHARACTERISTIC AND METHOD OF MAKING SAME 失效

    公开(公告)号：JPS5476801A

    公开(公告)日：1979-06-19

    申请号：JP14306277

    申请日：1977-11-28

    Applicant: KURARAY CO

    Inventor： FUKUSHIMA OSAMU ,  HOASHI KOUJI ,  KOGAME KUNIO

    IPC: D06N3/00 ,  D06N3/14

    Abstract: A suede-like sheet material closely resembling natural leathers in feel and nap is produced by temporarily fixing a fibrous mat consisting of "oceano-insular" composite fibers, impregnating said fibrous mat with elastomer (A), smoothing the surface, impregnating the resulting mat with another elastomer (B) which is harder and less swellable than said elastomer (A), removing the sea or matrix component of the composite fiber, and napping the surface of the resulting sheet material.

    FIBROUS SHEET
    38.
    发明专利
    FIBROUS SHEET 失效

    公开(公告)号：JPH03260150A

    公开(公告)日：1991-11-20

    申请号：JP5869990

    申请日：1990-03-08

    Applicant: KURARAY CO

    Inventor： YAMAZAKI TAKESHI ,  KOGAME KUNIO

    IPC: D06N3/14 ,  D04H1/4291 ,  D04H1/4382

    Abstract: PURPOSE:To obtain the subject sheet useful for leather-like sheet having excellent gloss and tenacity by containing polyurethane in the bundles of an ultrathin fiber bundle-like fiber and dispersing a specific ultrathin polyolefin fiber inside and around of the bundles. CONSTITUTION:The objective sheet is a fibrous sheet containing polyurethane (obtained by, e.g. reacting raw materials mainly composed of three components as a polymeric diol having 500-3000 average molecular weight, an organic diisocyanate and a low molecular weight compound having two active hydrogen atoms) in the spaces of interlaced fibers of an interlaced nonwoven cloth made of an ultrathin fiber bundle-like fiber. The polyurethane is contained within the bundles of said bundle-like fiber and an ultrathin polyolefin fiber having =500 aspect ratio which is dispersed within and around the bundles.

    FIBER-ENTANGLED NONWOVEN FABRIC
    39.
    发明专利
    FIBER-ENTANGLED NONWOVEN FABRIC 失效

    公开(公告)号：JPH0214056A

    公开(公告)日：1990-01-18

    申请号：JP31806788

    申请日：1988-12-15

    Applicant: KURARAY CO

    Inventor： KOGAME KUNIO ,  TANBA YOSHIHIRO ,  MAKIMURA MASARU

    IPC: D04H1/4358 ,  D04H1/4382 ,  D04H1/46 ,  D06M15/564 ,  D06M101/00 ,  D06M101/16 ,  D06M101/18 ,  D06M101/30 ,  D06M101/32 ,  D06M101/34 ,  D06N3/14

    Abstract: PURPOSE:To obtain the subject nonwoven fabric having excellent stretchability and suitable as a substrate for artificial leather, etc., by combining a multi- component fiber composed of an elastic fiber of polyurethane elastomer and a specific other non-elastic polymer with a multi-component fiber composed of non-elastic polymers other than the above polymer and entangling the fibers. CONSTITUTION:(A) An elastic polymer composed mainly of a polyurethane and (B) a non-elastic polymer (e.g., polyethylene) having solvent and decomposition agent different from those of the component A are dissolved in e.g., a common solvent and the obtained dope is spun to produce a multi-component fiber I. The ratio of the component A is preferably 30-80wt.%. Separately, a multi-component fiber II is produced by spinning (C) a non-elastic polymer such as polyethylene terephthalate and (D) a polymer (e.g., polystyrene) having solvent solubility and decomposability different from those of the component C in the same manner as above. The produced multi-component fiber II is combined with the above multi-component fiber I, opened e.g., with a carding machine to form a web and subjected to entangling treatment to obtain the objective nonwoven fabric.

    PRODUCTION OF FIBER PLUSH SHEET
    40.
    发明专利
    PRODUCTION OF FIBER PLUSH SHEET 失效

    公开(公告)号：JPH01272886A

    公开(公告)日：1989-10-31

    申请号：JP9911288

    申请日：1988-04-20

    Applicant: KURARAY CO

    Inventor： ASHIDA TETSUYA ,  KOGAME KUNIO

    IPC: B32B5/02 ,  B32B27/40 ,  D06N3/14 ,  D06P3/00 ,  D06P5/06

    Abstract: PURPOSE:To obtain the title sheet excellent in discoloration resistance to light and heat, by treating, with an ion blocking agent, a fiber-interlaced nonwoven fabric plush sheet consisting of copper-contg. ultrafine polyamide fiber followed by dyeing with a metal complex salt dye and then treatment with a specific stabilizing agent. CONSTITUTION:Firstly, a fiber-interlaced aggregate composed of ultrafine polyamide fiber 5-100ppm in copper halide content and

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