发明名称 |
METHOD FOR FORMING EXFOLIATED CLAY-POLYOLEFIN NANOCOMPOSITES |
摘要 |
A method for forming a nanocomposite by olefin polymerization in which at least one cation-exchanging layered load material, selected from the group consisting of cation-exchanging, layered inorganic silicates and cation-exchanging, layered compounds other than silicates, is treated with acid to disrupt its layered structure and is combined with a catalyst that becomes activated for olefin polymerization when in contact with the acid-treated filler. An olefin is contacted by the activated catalyst—filler combination either (a) in the absence of an alkylaluminum co-catalyst or (b) with an alkylaluminum co-catalyst when the activatable catalyst is a polyalkylmetal compound, to form a nanocomposite containing polyolefin and the acid-treated filler. In a particular embodiment, sufficient filler is used to constitute at least 30 weight % of the nanocomposite to prepare a highly loaded nanocomposite masterbatch. A predetermined amount of one or more olefinic polymers can then be blended with the masterbatch to obtain a nanocomposite having a desired amount of loading. The filler is preferably clay, exemplified by montmorillonite. The catalyst is preferably a non-metallocene catalyst, most preferably a nickel complex bearing an α-iminocarboxamidato ligand. |
申请公布号 |
EP2029668(A4) |
申请公布日期 |
2011.12.07 |
申请号 |
EP20070795994 |
申请日期 |
2007.06.12 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
SCOTT, SUSANNAH;PEOPLES, BRIAN;ROJAS, RENE;TANNA, AKIO;SHIMIZU, FUMIHIKO |
分类号 |
B82Y30/00;C08F4/02;C08F4/659;C08F4/80;C08F210/00;C08J5/00;C08K9/04 |
主分类号 |
B82Y30/00 |
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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