发明名称 |
Olefinic block copolymers of ethylene propylene and 1-butene |
摘要 |
A block copolymer comprising 60 to 95 parts by weight of a binary or tertiary random copolymer block A comprising propylene, ethylene and/or butene-1 and 5 to 40 parts by weight of a binary or tertiary random copolymer block B comprising butene-1, propylene and, optionally, ethylene. This block copolymer can be shaped into a film having excellent heat sealability, transparency and blocking resistance.
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申请公布号 |
US4481336(A) |
申请公布日期 |
1984.11.06 |
申请号 |
US19830476838 |
申请日期 |
1983.03.18 |
申请人 |
MITSUBISHI PETROCHEMICAL COMPANY LIMITED |
发明人 |
FUJII, MASAKI;MIYABAYASHI, MITSUTAKA |
分类号 |
C08F297/00;C08F297/08;C08L23/14;(IPC1-7):C08F297/08 |
主分类号 |
C08F297/00 |
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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