发明名称 |
Production of polyolefins having improved properties |
摘要 |
A process for producing polypropylene having increased melt strength, the process comprising (i) homopolymerising polypropylene or copolymerising propylene with one or more comonomers selected from ethylene and C4 to C101-olefins to produce a polypropylene homopolymer or copolymer respectively having a double bond concentration of at least 0.1 per 10,000 carbon atoms, (11) irradiating the polypropylene with an electron beam having an energy of at least 5 MeV and at radiation dose of at least 5 kGray, and (iii) melting and mechanically processing the melt of polypropylene to form long chain branches on the polypropylene molecules.
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申请公布号 |
US2004054024(A1) |
申请公布日期 |
2004.03.18 |
申请号 |
US20030312907 |
申请日期 |
2003.09.11 |
申请人 |
DEBRAS GUY;DUPIRE MARC;MICHEL JACQUES |
发明人 |
DEBRAS GUY;DUPIRE MARC;MICHEL JACQUES |
分类号 |
C08F8/50;C08F10/06;C08F110/06;C08J3/28;(IPC1-7):C08J3/28 |
主分类号 |
C08F8/50 |
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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