发明名称 |
Star-branched polymer with dendrimer core |
摘要 |
Polyisobutylene (PIB) functionalized with terminal reactive unsaturation is disclosed. Carbocationically polymerized monohalogen-terminated PIB is dehydrohalogenated in a hydrocarbon solvent using an alkoxide of the formula RO-M wherein R is alkyl of at least 5 carbon atoms and M is alkali metal. The PIB obtained has terminal unsaturation which is 100% in the reactive "exo' form which can be converted to succinic anhydride groups (PIB-SA) by the ene reaction with maleic anhydride. The PIB-SA is reactive with amine functional dendrimers to obtain a star-branched polymer having a dendrimer core and PIB branches joined by succinimide linkages. Blends of the star-branched polymer with polypropylene have improved energy absorption properties and controllable moisture/oxygen permeabilities useful in films.
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申请公布号 |
US2003050433(A1) |
申请公布日期 |
2003.03.13 |
申请号 |
US20020278310 |
申请日期 |
2002.10.23 |
申请人 |
AGARWAL PAWAN KUMAR;WANG HSIEN-CHANG;WANG YU FENG;FRECHET JEAN M. J.;HAQUE SHAH A. |
发明人 |
AGARWAL PAWAN KUMAR;WANG HSIEN-CHANG;WANG YU FENG;FRECHET JEAN M. J.;HAQUE SHAH A. |
分类号 |
C08F8/00;C08F8/26;C08G81/00;C08G81/02;C08G83/00;(IPC1-7):C08G73/00 |
主分类号 |
C08F8/00 |
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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