公开(公告)号：US20230055361A1

公开(公告)日：2023-02-23

申请号：US17788958

申请日：2021-03-22

Applicant: DENKA COMPANY LIMITED

Inventor： Yushi KUMAGAI ,  Wataru NISHINO ,  Yutaka SAITO ,  Naoki KOBAYASHI

IPC: C08F293/00 ,  C08K5/01

Abstract: A chloroprene-based block copolymer, a latex, a latex composition, and a rubber composition that can produce a product with excellent flexibility and tensile properties without the use of a vulcanizing agent or a vulcanizing accelerator. A chloroprene-based block copolymer, includes 5 to 30% by mass of a polymer block (A) and 70 to 95% by mass of a chloroprene-based polymer block (B), wherein: the polymer block (A) is derived from a monomer; when the monomer is polymerized alone, a polymer with a glass transition temperature of 80° C. or higher can be obtained; the chloroprene-based polymer block (B) includes a chloroprene monomer; and the chloroprene-based block copolymer has a toluene insoluble content of 20 to 100% by mass with respect to 100% by mass of the chloroprene-based block copolymer.

公开(公告)号：US20230050436A1

公开(公告)日：2023-02-16

申请号：US17788950

申请日：2021-03-22

Applicant: DENKA COMPANY LIMITED

Inventor： Yushi KUMAGAI ,  Wataru NISHINO ,  Yutaka SAITO ,  Naoki KOBAYASHI

IPC: C08F293/00

Abstract: A chloroprene-based block copolymer latex, including a chloroprene-based block copolymer, wherein: the chloroprene-based block copolymer contains 5 to 30% by mass of a polymer block (A) and 70 to 95% by mass of a chloroprene-based polymer block (B); the polymer block (A) is derived from a monomer; when the monomer is polymerized alone, a polymer with a glass transition temperature of 80° C. or higher can be obtained; the chloroprene-based polymer block (B) includes a chloroprene monomer unit; and when the chloroprene-based block copolymer latex is molded by immersion molding to obtain a film and then the film is heat-treated at 130° C. for 30 minutes, a tensile strength at break measured in accordance with JIS K6251 of the film is 17 MPa or more is provided.

公开(公告)号：US20230025987A1

公开(公告)日：2023-01-26

申请号：US17788782

申请日：2021-03-22

Applicant: DENKA COMPANY LIMITED

Inventor： Yushi KUMAGAI ,  Wataru NISHINO ,  Yutaka SAITO ,  Naoki KOBAYASHI

IPC: C08F293/00 ,  C08J3/05

Abstract: An immersion-molded body, wherein: the immersion-molded body is obtained using a latex; the latex comprises a chloroprene-based block copolymer; the chloroprene-based block copolymer contains 5 to 30% by mass of a polymer block (A) and 70 to 95% by mass of a chloroprene-based polymer block (B); the polymer block (A) is derived from a monomer; when the monomer is polymerized alone, a polymer with a glass transition temperature of 80° C. or higher can be obtained; the chloroprene-based polymer block (B) includes a chloroprene monomer unit; and when the immersion-molded body is heat-treated at 130° C. for 30 minutes, a tensile strength at break of the heat-treated immersion-molded body measured in accordance with JIS K6251 is 17 MPa or more.

公开(公告)号：US20160289437A1

公开(公告)日：2016-10-06

申请号：US15035972

申请日：2014-11-11

Applicant: DENKA COMPANY LIMITED

Inventor： Yushi KUMAGAI ,  Masaru HASEGAWA ,  Tetsuo NOGUCHI

IPC: C08L25/08 ,  B32B27/30 ,  B32B27/32 ,  B32B27/08

CPC classification number: C08L25/08 ,  B32B27/08 ,  B32B27/30 ,  B32B27/302 ,  B32B27/32 ,  B32B2274/00 ,  B32B2307/584 ,  B32B2509/00 ,  B32B2535/00 ,  B32B2605/00 ,  C08F255/02 ,  C08L23/10 ,  C08L51/003 ,  C08L51/06 ,  C08L53/025 ,  C08F210/02 ,  C08F212/08 ,  C08F212/36 ,  C08L23/12

Abstract: [Problem] To provide a thermoplastic elastomer resin composition that excels in tensile breaking strength, softness, oil resistance and scratch resistance, and that has good heat fusion ability with respect to polyolefin resins. [Solution] A thermoplastic elastomer resin composition consisting of: 15 to 89 mass % of a cross-copolymer having a polymer consisting of aromatic vinyl monomer units as a cross-chain structure on an aromatic vinyl-olefin-aromatic polyene copolymer main chain consisting of 9.99 to 29.99 mol % of aromatic vinyl monomer units, 70 to 90 mol % of olefin monomer units and 0.01 to 0.5 mol % of aromatic polyene monomer units; 1 to 55 mass % of a hydrogenated block copolymer; and 10 to 60 mass % of a polypropylene resin.

Abstract translation: 本发明提供一种热塑性弹性体树脂组合物，它具有抗拉断裂强度，柔软性，耐油性和耐擦伤性，并且对聚烯烃树脂具有良好的热熔融能力。 [解决方案]一种热塑性弹性体树脂组合物，其由以下组成的组成：15〜89质量％的交联共聚物，其具有由作为交联链结构的芳香族乙烯基单体单元的聚合物构成的芳香族乙烯 - 烯烃 - 芳香族多烯共聚物主链， 芳香族乙烯基单体单元为9.99〜29.99摩尔％，烯烃单体单元为70〜90摩尔％，芳香族多烯单体单元为0.01〜0.5摩尔％ 1〜55质量％氢化嵌段共聚物; 和10〜60质量％的聚丙烯树脂。