发明名称 |
Entanglement-inhibited macromolecules |
摘要 |
A grafted and/or functionalized macromolecule comprises entanglement-inhibited architecture wherein the polymer exhibits reduced melt viscosity. In one embodiment, the macromolecule comprises a polymer of an isoolefin having about 4 to about 7 carbon atom and a para-alkylstyrene, wherein a grafted macromonomer such as a terminally functionalized polystyryl chain of very narrow molecular weight distribution is attached to the para-alkyl group of the para-alkylstyrene such that entanglement of adjacent chains in the melt are inhibited. In addition to distributed macromonomer grafts, other functionality may be attached to the para-alkyl group of the para-alkylstyrene to introduce other desirable properties such as radiation curability. In another embodiment the macromolecule comprises a polymer of one or more simple olefinic monomers wherein a macromolecule is attached to pendent functionality and/or copolymerized into the polymer backbone. A particularly preferred macromonomer comprises a terminal norbornene functional group.
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申请公布号 |
US5294678(A) |
申请公布日期 |
1994.03.15 |
申请号 |
US19930009692 |
申请日期 |
1993.01.27 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
TSE, MUN-FU;DIAS, ANTHONY J.;MEKA, PRASADARAO;MCELRATH, KENNETH O. |
分类号 |
C08F290/00;C08F291/00;C08F299/00;C08G81/00;(IPC1-7):C08F255/08;C08F257/02 |
主分类号 |
C08F290/00 |
代理机构 |
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