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    POLYAMIDE COMPOSITION
    1.
    发明公开
    POLYAMIDE COMPOSITION 审中-公开

    公开(公告)号：EP4455214A1

    公开(公告)日：2024-10-30

    申请号：EP22911158.8

    申请日：2022-12-19

    申请人： Kuraray Co., Ltd.

    发明人： SUGAI, Naoto ,  NANYA, Atsushi

    IPC分类号： C08L77/06 ,  C08G69/26 ,  C08K3/16 ,  C08K3/24

    摘要： Provided is a polyamide composition, which has high moldability and excellent heat resistance and chemical resistance. The polyamide composition contains a polyamide (A), a copper compound (B 1) and a metal halide (B2), and in which the polyamide (A) comprises a diamine unit (X) and a dicarboxylic acid unit (Y), the diamine unit (X) contains 0.1 mol% or more and less than 36 mol% of a diamine unit (X1), and the diamine unit (X1) is a diamine unit derived from an aliphatic diamine, in which the aliphatic diamine has 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having 2 or 3 carbon atoms bonded to a carbon atom at 2-position when a carbon atom to which any one of two amino groups is bonded is taken as 1-position.

    HIGH-TEMPERATURE-RESISTANT SEMI-AROMATIC COPOLYIMIDE AND PREPARATION METHOD THEREFOR, COMPOSITION, AND MOLDED ARTICLE
    5.
    发明公开
    HIGH-TEMPERATURE-RESISTANT SEMI-AROMATIC COPOLYIMIDE AND PREPARATION METHOD THEREFOR, COMPOSITION, AND MOLDED ARTICLE 审中-实审

    公开(公告)号：EP4357391A1

    公开(公告)日：2024-04-24

    申请号：EP22840931.4

    申请日：2022-01-27

    申请人： Cathay Biotech Inc. ,  Cibt America Inc.

    发明人： FENG, Wutong ,  ZHAO, Yuanbo ,  LIU, Xiucai

    IPC分类号： C08G69/26 ,  C08G69/28 ,  C08L77/06

    CPC分类号： C08L77/06 ,  C08G69/26 ,  C08G69/28

    摘要： The present disclosure provides a high temperature resistant semi-aromatic copolyamide, its preparation method, compositions, and molded product. The monomer raw materials of the high temperature resistant semi-aromatic copolyamide comprise diacid monomers and diamine monomers. The diacid monomers include but not limited to aromatic diacid and/or the derivatives of the aromatic diacid and aliphatic diacid. The diamine monomers include but not limited to decamethylene diamine and pentamethylene diamine. The molar ratio of the decamethylene diamine to the pentamethylene diamine is (1-30):1. The high temperature resistant semi-aromatic copolyamide provided in the present disclosure has outstanding heat resistance, mechanical strength, low water absorption, dimensional stability and low yellow index. The present disclosure adopts one-step method which takes water as the reaction medium to prepare the copolyamide PA10T/5T/5X/10X, and has such advantages as environment protection, simple operation, low cost and high production efficiency.

    POLYAMIDE RESIN AND PREPARATION METHOD THEREFOR, COMPOSITION, AND FIBER PRODUCT
    7.
    发明公开
    POLYAMIDE RESIN AND PREPARATION METHOD THEREFOR, COMPOSITION, AND FIBER PRODUCT 审中-实审

    公开(公告)号：EP4353768A1

    公开(公告)日：2024-04-17

    申请号：EP22819070.8

    申请日：2022-01-14

    申请人： Cathay Biotech Inc. ,  Cibt America Inc. ,  Cathay (Jinxiang) Biomaterial Co., Ltd.

    发明人： QIN, Bingbing ,  SUN, Chaoxu ,  GAO, Yuanyan ,  LIU, Xiucai

    IPC分类号： C08G69/46 ,  C08G69/26

    CPC分类号： C08G69/46 ,  C08G69/26 ,  C08G69/28 ,  D01F6/60

    摘要： The present disclosure provides a polyamide resin and a preparation method therefor, a composition, and a fiber product. The polyamide comprises diamine structural units and diacid structural units, wherein 90 mol% or more of the diacid structural units are derived from adipic acid, 90 mol% or more of the diamine structural units are derived from 1,5-pentanediamine, and the polyamide resin contains a water-extractable substance in a content of 0.7 wt.% or less. The water-extractable substance has a number average molecular weight of 2000 or less. The preparation method of the polyamide resin of the present disclosure is simple without using large-scale equipment, and the process parameters thereof are easy to control, thereby facilitating mass production thereof. The polyamide resin of the present disclosure has a long spinneret wipe cycle time and less broken filament times, and the obtained fiber has less broken filaments, low yarn unevenness, less dyed dark grain, a good dyeing effect, and an excellent elongation at break, breaking strength and a lower boiling water shrinkage, a high spinning yield and a high dyeing yield.