发明名称 |
COUPLED STYRENIC BLOCK COPOLYMERS AND PROCESS FOR PREPARING SAME |
摘要 |
Disclosed is an improvement to a process for preparing coupled styrenic block copolymers wherein adding from about 0.01 to about 1.5 equivalents of a metal alkyl compound per equivalent of living polymer chain ends to the cement, during or after polymerization, improves coupling efficiencies. The resultant radial styrenic block copolymers have reduced amounts of 5+ arm oligomers which can be very desirable is certain applications, such as the modification of bitumen. |
申请公布号 |
EA008191(B1) |
申请公布日期 |
2007.04.27 |
申请号 |
EA20050000161 |
申请日期 |
2003.07.11 |
申请人 |
KRATON POLYMERS RESEARCH B.V. |
发明人 |
BENING ROBERT;ATWOOD HARVEY, EMERSON;VAN DIJK MARINUS, PIETER;ROS ADRIANA, MARIA, PETRONELLA;MOORE BARRY;WILLIS CARL;VAN DIJK NIKOLAS, JAN |
分类号 |
C08F297/04;C08F8/04;C08L53/02;C08L95/00 |
主分类号 |
C08F297/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|