发明名称 |
Three arm star compositions of matter having diblock arms based on polyisobutylene and methods of preparation |
摘要 |
The present invention relates to compositions of matter comprising a trifunctional aromatic core, said core having three arms radiating therefrom, wherein each of said arms is a diblock copolymer comprising an inner segment of polyisobutylene connected to a outer polymer segment obtained by a living radical polymerization process. The present invention also provides a process of preparing a composition of matter comprising the steps of: providing a trifunctional aromatic initiator core; reacting the trifunctional aromatic core with isobutylene to form a macroinitiator, said macroinitiator comprising polyisobutylene functionalized at the terminus of each said arm; conducting site transformation at the terminus of each arm to introduce a group capable of initiating living radical polymerization of outer segments at the terminus of each arm; performing living radical polymerization to form the outer polymer segments to produce a three arm star composition of matter having three diblock copolymer arms.
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申请公布号 |
US6228945(B1) |
申请公布日期 |
2001.05.08 |
申请号 |
US19990467576 |
申请日期 |
1999.12.20 |
申请人 |
THE UNIVERSITY OF AKRON |
发明人 |
KENNEDY JOSEPH P.;KESZLER BALAZS;FENYVESI GYOERGYI |
分类号 |
C08F290/06;C08F293/00;C08L53/00;C09D153/00;C09J153/00;(IPC1-7):C08L25/10 |
主分类号 |
C08F290/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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