发明授权
- 专利标题: Catalysts and processes for the polymerization of olefins
- 专利标题(中): 催化剂和烯烃聚合方法
-
申请号: US503948申请日: 1995-07-19
-
公开(公告)号: US5849653A公开(公告)日: 1998-12-15
- 发明人: Tiziano Dall'Occo , Maurizio Galimberti , Luigi Resconi , Enrico Albizzati , Gianni Pennini
- 申请人: Tiziano Dall'Occo , Maurizio Galimberti , Luigi Resconi , Enrico Albizzati , Gianni Pennini
- 申请人地址: NLX Hoffddorp
- 专利权人: Montell Technology Company bv
- 当前专利权人: Montell Technology Company bv
- 当前专利权人地址: NLX Hoffddorp
- 优先权: ITXMI94A1516 19940720
- 主分类号: C08F4/642
- IPC分类号: C08F4/642 ; C08F4/64 ; C08F4/648 ; C08F4/659 ; C08F4/6592 ; C08F10/00 ; C08F10/02 ; C08F10/06 ; C08F110/02 ; C08F110/06 ; C08F210/16
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(CH.sub.2 --CR.sup.4 R.sup.5 R.sup.6).sub.w R.sup.7.sub.y H.sub.z(II) wherein in the (CH.sub.2 --CR.sup.4 R.sup.5 R.sup.6) groups, which are the same or different, R.sup.4 is an alkyl, alkenyl or arylalkyl group having from 1 to 10 carbon atoms, R.sup.5 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.sup.4 and R.sup.5 fused together can form a ring having from 4 to 6 carbon atoms, R.sup.6 is hydrogen or an alkyl, alkenyl or arylalkyl group having from 1 to 10 carbon atoms, the R.sup.7 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.
公开/授权文献
- US5062830A Dry disposable nozzle assembly for medical jet injector 公开/授权日:1991-11-05