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US 2003/0149188 A1Published application
Vulcanized solid rubber
AssigneeSumitomo Chemical Company, Limited
InventorsJunichi Koshiba, Sadayuki Nakano
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AssigneeSumitomo Chemical Company, Limited
InventorsJunichi Koshiba, Sadayuki Nakano
Estimating the term…
There is provided vulcanized solid rubber, which comprises a vulcanized product of an oil-extended copolymer comprising: (i) 100 parts by weight of an ethylene-α-olefin-non-conjugated diene copolymer satisfying the following requirements (1) to (4), and (ii) 10 to 90 parts by weight of an extender oil: (1) a weight ratio of an ethylene unit to an α-olefin unit in the ethylene-α-olefin-non-conjugated diene copolymer is from 73/27 to 40/60, (2) an iodine value of the ethylene-α-olefin-non-conjugated diene copolymer is from 20 to 36, (3) Mooney viscosity (ML1+4 (121° C.)) measured according to JIS-K-6300 of a blend containing 100 parts by weight of the ethylene-α-olefin-non-conjugated diene copolymer and 20 parts by weight of an extender oil is from 100 to 180, and (4) a ratio of weight average molecular chain length/number average molecular chain length measured by gel permeation chromatography of the ethylene-α-olefin-non-conjugated diene copolymer is from 3 to 5.
Vulcanized solid rubber, which comprises a vulcanized product of an oil-extended copolymer comprising:
A process for producing vulcanized solid rubber, which comprises the step of vulcanizing under heating a blend comprising:
Dependencies are inferred from the claim text.