公开(公告)号：US20230399498A1

公开(公告)日：2023-12-14

申请号：US18249787

申请日：2021-08-04

Applicant: Denka Company Limited

Inventor： Atsunori KONDO ,  Nobuhiko FUJII

IPC: C08L11/00

CPC classification number: C08L11/00

Abstract: A rubber composition of a first embodiment contains 100 parts by mass of a chloroprene polymer, more than 0 parts by mass and 25 parts by mass or less of a diene-based polymer having an epoxy group, and 0.3 to 1.8 parts by mass of an organic peroxide, in which the chloroprene polymer includes a copolymer of chloroprene. A rubber composition of a second embodiment contains 100 parts by mass of a chloroprene polymer, more than 0 parts by mass and 25 parts by mass or less of a diene-based polymer having an epoxy group, and 0.3 to 1.8 parts by mass of an organic peroxide, in which the chloroprene polymer includes a homopolymer of chloroprene.

公开(公告)号：US20230383102A1

公开(公告)日：2023-11-30

申请号：US18249463

申请日：2021-08-05

Applicant: Denka Company Limited

Inventor： Atsunori KONDO ,  Nobuhiko FUJII

IPC: C08L11/00

CPC classification number: C08L11/00

Abstract: A rubber composition containing 100 parts by mass of a chloroprene polymer, more than 0 parts by mass and 25 parts by mass or less of a diene-based polymer having an epoxy group, and 0.2 to 2.5 parts by mass of at least one selected from the group consisting of a thiourea compound and a thiazolidinethione compound. A vulcanizate and a vulcanized molded article of the rubber composition.

公开(公告)号：US20170211288A1

公开(公告)日：2017-07-27

申请号：US15515394

申请日：2015-09-29

Applicant: DENKA COMPANY LIMITED

Inventor： Yasushi KAMIHIGASHI ,  Shinichirou KUMAGAI ,  Takumi NISHIMURA ,  Koji FUJITA ,  Takehiro TOMITA ,  Tatsuji MATSUMOTO ,  Yasuhiko KONDO ,  Yasuchika ITO ,  Takashi SUNADA ,  Nobuhiko FUJII ,  Hideki TOYA ,  Yasushi ABE

IPC: E04H9/02 ,  B32B7/12 ,  E01D19/04 ,  F16F15/08 ,  E04B1/36 ,  E04B1/98 ,  B32B25/04 ,  B32B27/32

CPC classification number: E04H9/022 ,  B32B7/12 ,  B32B9/005 ,  B32B9/043 ,  B32B15/06 ,  B32B15/18 ,  B32B25/04 ,  B32B25/08 ,  B32B25/12 ,  B32B25/14 ,  B32B25/16 ,  B32B25/18 ,  B32B27/06 ,  B32B27/32 ,  B32B2250/42 ,  B32B2264/104 ,  B32B2264/108 ,  B32B2270/00 ,  B32B2307/51 ,  B32B2307/536 ,  B32B2307/54 ,  B32B2307/542 ,  B32B2307/70 ,  B32B2307/732 ,  B32B2419/00 ,  E01D19/041 ,  E04B1/36 ,  E04B1/98 ,  F16F1/3605 ,  F16F1/40 ,  F16F15/08 ,  F16F2224/025

Abstract: Provided is a rubber bearing formed from a polychloroprene composition and having higher ozone resistance.The rubber bearing comprises a laminate prepared by alternately laminating a plurality of soft layers having rubber elasticity and a plurality of hard layers having rigidity, and a covering layer covering an outer peripheral part of the laminate. The soft layer comprises a rubber composition containing a polychloroprene, and the covering layer comprises a blend rubber composition containing 30 to 95 parts by mass of a polychloroprene and 70 to 5 parts by mass of an elastomer other than the polychloroprene.