发明授权
US6048950A Polymer having long isotactic sequences and randomly-distributed
ethylene content obtained by polymerizing propylene in presence of
specific catalysts
失效
在特定催化剂存在下通过聚合丙烯获得的具有长全同立构序列和无规分布的乙烯含量的聚合物
- 专利标题： Polymer having long isotactic sequences and randomly-distributed ethylene content obtained by polymerizing propylene in presence of specific catalysts
- 专利标题（中）： 在特定催化剂存在下通过聚合丙烯获得的具有长全同立构序列和无规分布的乙烯含量的聚合物
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申请号： US987479申请日： 1997-12-09
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公开(公告)号： US6048950A公开(公告)日： 2000-04-11
- 发明人: Volker Dolle , Jurgen Rohrmann , Andreas Winter , Martin Antberg
- 申请人： Volker Dolle , Jurgen Rohrmann , Andreas Winter , Martin Antberg
- 申请人地址： DEX
- 专利权人： Targor GmbH
- 当前专利权人： Targor GmbH
- 当前专利权人地址： DEX
- 优先权： DEX3826074 19980730
- 主分类号： C08F4/642
- IPC分类号： C08F4/642 ; C08F4/659 ; C08F4/6592 ; C08F110/06 ; C08F4/44
摘要：
Propylene isoblock polymers with 0.5 to 10 mol %, based on the total polymer, of randomly distributed ethylene content and with a narrow molecular weight distribution and rubber-like properties are obtained when propylene is polymerized using a catalyst comprising an aluminoxane and a chiral metallocene, containing bridges, of formula I: ##STR1## in which M.sup.1 is preferably hafnium or zirconium,R.sup.1 and R.sup.2 are preferably halogen (e.g. C1) atoms,R.sub.3 through R.sup.6 are hydrogen or C.sub.1 -C.sub.10 -alkyl, and pair of adjacent radicals R.sup.3, R.sup.4, R.sup.5, and R.sup.6 can form an aromatic ring with the C-atoms to which they are bonded, andR.sup.7 is preferably --Si(CH.sub.3).sub.2 --Si(CH.sub.3).sub.2 --.
公开/授权文献
- US5520989A Recyclable print-tinted paper 公开/授权日：1996-05-28
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