Title:
【発明の名称】ルイス酸での引抜きによる均質オレフィン重合触媒
Document Type and Number:
Japanese Patent JP3339883
Kind Code:
B2
Abstract:
Addition polymerization catalysts having a limiting charge separated structure corresponding to the formula: LMX<+> XA<->, wherein: L is a derivative of a substituted delocalized PI -bonded group imparting a constrained geometry to the metal active site and containing up to 50 nonhydrogen atoms; M is a metal of Group 4 or the Lanthanide series of the Periodic Table of the Elements; X independently each occurrence is hydride or a hydrocarbyl, silyl or germyl group having up to 20 carbon, silicon or germanium atoms; and A<-> is an anion of a Lewis acid, A, having relative Lewis acidity greater than or equal to that of phenylbis(perfluorophenyl)borane, said anion being compatible with the metal cation, are prepared by contacting a derivative of a Group 4 or Lanthanide metal corresponding to the formula: LMX2, wherein L, M, and X are as previously defined, with the Lewis acid, A.
Inventors:
Robert Ela Point
James Sea Stevens
Peter N Nikkias
Mark H McAdon
James Sea Stevens
Peter N Nikkias
Mark H McAdon
Application Number:
JP20585192A
Publication Date:
October 28, 2002
Filing Date:
June 24, 1992
Export Citation:
Assignee:
The Dow Chemical Company
International Classes:
C08F4/60; C07F17/00; C08F4/42; C08F4/64; C08F4/643; C08F4/6592; C08F4/74; C08F10/00; C08F4/659; C08F110/02; C08F110/06; C08F210/06; C08F210/16; (IPC1-7): C08F4/643; C07F17/00; C08F10/00
Domestic Patent References:
| JP3139504A |
Other References:
【文献】欧州特許出願公開426637(EP,A1)
【文献】欧州特許出願公開427697(EP,A1)
【文献】欧州特許出願公開427697(EP,A1)
Attorney, Agent or Firm:
Takehiko Saitoh