公开(公告)号：US20170292014A1

公开(公告)日：2017-10-12

申请号：US15520720

申请日：2014-10-28

Applicant: DENKA COMPANY LIMITED

Inventor： Keiji KITAHARA ,  Hiroyuki ISHIGURO ,  Yasushi ABE

IPC: C08L11/00 ,  C08K5/00 ,  B29C35/02 ,  C09C1/48 ,  C08K3/22

CPC classification number: C08L11/00 ,  B29C35/02 ,  C08K3/04 ,  C08K3/22 ,  C08K5/0016 ,  C08K2003/2296 ,  C08K2201/003 ,  C08K2201/006 ,  C08L15/00 ,  C09C1/48

Abstract: Provided is a chloroprene rubber composition giving a vulcanized molded article improved further in heat resistance without deterioration in mechanical properties such as anti-vibration rubber properties, durometer hardness, and elongation at break, a vulcanized molded article prepared and an anti-vibration rubber prepared from the composition. A chloroprene rubber composition, comprising 100 parts by mass of a chloroprene rubber, 0.1 part or more by mass and 10 parts or less by mass of an active zinc white having an average particle diameter of 0.05 μm or more and 0.35 μm or less, a particle diameter range of 0.01 μm or more and 1.0 μm or less and a specific surface area of 10 m2/g or more and 150 m2/g or less, and 15 parts or more by mass and 200 parts or less by mass of a carbon black having an average particle diameter of 70 nm or more and 600 nm or less and a DBP oil absorption number of 15 ml/100 g or more and 60 ml/100 g or less.

公开(公告)号：US20210292524A1

公开(公告)日：2021-09-23

申请号：US17261960

申请日：2019-07-11

Applicant: DENKA COMPANY LIMITED

Inventor： Takashi SUNADA ,  Hiroyuki ISHIGURO ,  Yasushi ABE

IPC: C08L11/02 ,  C08L33/20

Abstract: A rubber composition from which a vulcanized rubber simultaneously improved in three characteristics of oil resistance, cold resistance and ozone resistance can be obtained, and a molded article using the vulcanized rubber are provided. The rubber composition contains 50 to 99 parts by mass of a chloroprene rubber containing 0.01 to 20% by mass of an unsaturated nitrile monomer unit and 1 to 50 parts by mass of a non-conjugated diene rubber.