Title:
VIBRATIONPROOF RUBBER COMPOSITION, AND RUBBER COMPOSITION FOR SEALANT
Document Type and Number:
Japanese Patent JP3744087
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a vibrationproof rubber compsn. and a rubber compsn. for sealant both low in hardness and excellent in compression set, vibrationproof properties, low-temp. properties, etc.
SOLUTION: Both compsns. contain copolymer A and/or copolymer B and a vulcanizing/cross-linking agent. The copolymer A is an ethylene/6-12C α-olefin/ nonconjugated polyene random copolymer having a molar ratio of ethylene units to 6-12C α-olefin units of (80/20)-(55/45), an iodine value of 8-40, a Mooney viscosity (ML1+4, 100°C) of 5-350, and a ratio of Mw (wt. average mol.wt.) to Mn (number average mol.wt.) of 20-15. The copolymer B is an ethylene/ propylene/6-12C α-olefin/nonconjugated polyene random copolymer having a molar ratio of ethylene units to propylene units of (99/1)-(50/50), a molar ratio of ethylene units to the sum of propylene units and 6-12C α-olefin units of (80/20)-(55/45), an iodine value of 8-40, a Mooney viscosity of 5-350, and a ratio of Mw/Mn of 2-15.
Inventors:
Kenji Hasegawa
Akihiko Morikawa
Sakabe extension
Fumio Tsutsumi
Akihiko Morikawa
Sakabe extension
Fumio Tsutsumi
Application Number:
JP31688996A
Publication Date:
February 08, 2006
Filing Date:
November 14, 1996
Export Citation:
Assignee:
JSR CORPORATION
International Classes:
C08L23/08; C09K3/10; C08L19/00; C08L23/16; (IPC1-7): C08L19/00; C09K3/10
Domestic Patent References:
| JP8151488A | ||||
| JP61051038A | ||||
| JP5086236A | ||||
| JP3605913B2 |
Attorney, Agent or Firm:
Toshiaki Fukuzawa