发明名称 |
Modification of thermoplastic vulcanizates using random propylene copolymers |
摘要 |
Random propylene thermoplastic copolymers can be used to increase the elongation to break and toughness of thermoplastic vulcanizates. Semi-crystalline polypropylene is a preferred thermoplastic phase. The rubber can be olefinic rubbers. Random thermoplastic polypropylene copolymers are different from conventional Ziegler-Natta propylene copolymers as the compositional heterogeneity of the copolymer is greater with Ziegler-Natta copolymers. This difference results in substantial differences in properties (elongation to break and toughness) between thermoplastic vulcanizates modified with random thermoplastic propylene copolymers and those modified with conventional Ziegler-Natta propylene copolymers. An increase in elongation to break results in greater extensibility in the articles made from a thermoplastic vulcanizate.
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申请公布号 |
US6288171(B2) |
申请公布日期 |
2001.09.11 |
申请号 |
US19980108492 |
申请日期 |
1998.07.01 |
申请人 |
ADVANCED ELASTOMER SYSTEMS, L.P.;EXXON CHEMICAL PATENTS, INC. |
发明人 |
FINERMAN TERRY;ELLUL MARIA D.;ABDOU-SABET SABET;DATTA SUDHIN;GADKARI AVI |
分类号 |
C08J3/24;C08J3/20;C08L21/00;C08L23/10;C08L23/12;C08L23/14;C08L23/16;(IPC1-7):C08J3/24 |
主分类号 |
C08J3/24 |
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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