公开(公告)号：US07390856B2

公开(公告)日：2008-06-24

申请号：US10362145

申请日：2001-08-24

申请人： Kimberly A Johnson ,  Wouter de Jong ,  David K. Schisla

发明人： Kimberly A Johnson ,  Wouter de Jong ,  David K. Schisla

IPC分类号： C08C19/02 ,  C08F236/10

CPC分类号： C08F297/04 ,  C08F8/04

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° 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.

摘要翻译： 公开了一种制备乙烯基芳烃和共轭二烯的选择性氢化嵌段共聚物的方法，包括：a）阴离子聚合乙烯基芳族烃和共轭二烯以产生具有活性链末端的嵌段共聚物; b）终止生命终端; 以制备封端的嵌段共聚物，其中包含醇，氢及其混合物的成员，以制备封端的嵌段共聚物; 和c）在通过将羧酸钴与烷基铝结合而制备的催化剂存在下，在20至175℃的温度下使封端的嵌段共聚物与氢接触，其中：（i）如果聚合物用 醇和醇是直链醇，直链醇用于终止活性链末端，使得醇：活性链末端摩尔比为0.05至1.2：（ii）如果聚合物用醇终止 并且醇是支链醇，支链醇用于终止活性链末端，其量使得醇：活性链末端摩尔比为0.05至约3.0：（iii）如果聚合物以 醇和醇是直链醇和支链醇的混合物，直链醇用于以直链醇：活性链末端摩尔比为0.05至1.2的量终止活性链末端。