| 摘要 |
Diene polymers (A) have a weight-average mol.wt. of 10,000 to 1,000,000, measured according to GPC. They have general formula (1); where D1 represents a diene polymer (B); R1 represents an active hydrogen-free (1-20C) organic group, or a silicon cpd. m , n is O or an integer from 1 to 6. When n=0, m at least 1 and when m=0, n more than 2. - (A) are obtd. by the coupling diene polymers (B) having Li-C bonds with multi-functional group compounds having diglycidylamino gps. The mol.wt. ratio of (A) to (B) after the coupling is 1.2 or more. The diene polymer (B) can be a conjugated diene polymer or a random copolymer of vinylaromatic compounds with conjugated dienes. The diene polymer (B) can also be a block copolymer between a vinyl aromatic compound and a conjugated diene that is a thermal elastic resin or a thermal elastomer. The rubber composition comprises a rubbery diene copolymer (more than 10 wt%), carbon black and a vulcanising agent.
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