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公开(公告)号：EP0720627B1
公开(公告)日：1998-03-04
申请号：EP95926926.7
申请日：1995-07-18
发明人： DALL'OCCO, Tiziano , GALIMBERTI, Maurizio , RESCONI, Luigi , ALBIZZATI, Enrico , PENNINI, Gianni
CPC分类号： C08F10/00 , C08F4/65912 , C08F4/65922 , C08F10/02 , C08F10/06 , C08F110/02 , C08F110/06 , C08F210/16 , Y10S526/943 , C08F2500/17 , C08F2500/12 , C08F2500/21 , C08F210/08 , C08F210/06
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公开(公告)号：EP0720627A1
公开(公告)日：1996-07-10
申请号：EP95926926.0
申请日：1995-07-18
发明人： DALL'OCCO, Tiziano , GALIMBERTI, Maurizio , RESCONI, Luigi , ALBIZZATI, Enrico , PENNINI, Gianni
CPC分类号： C08F10/00 , C08F4/65912 , C08F4/65922 , C08F10/02 , C08F10/06 , C08F110/02 , C08F110/06 , C08F210/16 , Y10S526/943 , C08F2500/17 , C08F2500/12 , C08F2500/21 , C08F210/08 , C08F210/06
摘要： Catalysts for the polymerization of olefins are disclosed, which comprise the reaction product of: (A) a bridged and/or substituted cyclopentadienyl compound of titanium, zirconium or hafnium; (B) an organometallic aluminum compound of the formula (II) Al(CH2-CR4R5R6)wR7yHz, wherein in the (CH2-CR4R5R6) groups, which are the same or different, R4 is an alkyl, alkenyl or arylalkyl group having from 1 to 10 carbon atoms, R5 is an alkyl, alkenyl, aryl, arylalkyl or alkylaryl group having from 3 to 50 carbon atoms which is different from a straight alkyl or alkenyl group and, optionally, R?4 and R5¿ fused together can form a ring having from 4 to 6 carbon atoms, R6 is hydrogen or an alkyl, alkenyl or arylalkyl group having from 1 to 10 carbon atoms, the R7 substituents, same or different, are alkyl, alkenyl, aryl, arylalkyl or alkylaryl radicals containing from 1 to 10 carbon atoms and, optionally, can contain Si or Ge atoms, w is 1, 2 or 3, z is 0 or 1, y = 3-w-z; and (C) water. The molar ratio aluminum/water is comprised between 1:1 and 100:1. These catalysts show an improved activity with respect to known catalysts wherein an aluminum compound different from those of the above formula is used.
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