发明名称 |
A METHOD FOR MAKING SELECTIVELY HYDROGENATED BLOCK COPOLYMERS OF VINYL AROMATIC HYDROCARBONS AND CONJUGATED DIENES |
摘要 |
Disclosed is a method for making selectively hydrogenated block copolymers of vinyl aromatic hydrocarbons and conjugated dienes comprising: a) anionically polymerizing vinyl aromatic hydrocarbons and conjugated dienes to produce block copolymers with living chain ends; b) terminating the living chain ends, to produce a terminated block copolymer, with a member from the group consisting of an alcohol, hydrogen, and mixtures thereof, to prepare a terminated block copolymer; and c) contacting the terminated block copolymers with hydrogen at a temperature of from 20 to 175 DEG C in the presence of a catalyst prepared by combining a cobalt carboxylate with an aluminum alkyl, wherein: (i) if the polymer is terminated with an alcohol and the alcohol is a linear alcohol, the linear alcohol is used to terminate the living chain ends in an amount such that the alcohol: living chain end molar ratio is from 0.05 to 1.2; (ii) if the polymer is terminated with an alcohol and the alcohol is a branched alcohol, the branched alcohol is used to terminate the living chain ends in an amount such that the alcohol: living chain end molar ration is from 0.05 to about 3.0; an (iii) if the polymer is terminated with an alcohol and the alcohol is a mixture of a linear alcohol and a branched alcohol, the linear alcohol is used to terminate the living chain ends in an amount such that the linear alcohol: living chain end molar ration is from 0.05 to 1.2. |
申请公布号 |
WO0216449(A3) |
申请公布日期 |
2002.05.16 |
申请号 |
WO2001US26551 |
申请日期 |
2001.08.24 |
申请人 |
KRATON POLYMERS RESEARCH B.V.;JOHNSON, KIMBERLY, ANN;DE JONG, WOUTER;SCHISLA, DAVID, K. |
发明人 |
JOHNSON, KIMBERLY, ANN;DE JONG, WOUTER;SCHISLA, DAVID, K. |
分类号 |
C08F8/04;C08F297/04 |
主分类号 |
C08F8/04 |
代理机构 |
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