0520732-A1 is referenced by 292 patents and cites 1 patents.

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.

Title
Homogeneous olefin polymerization catalyst by ligand abstraction with lewis acids.
Application Number
EP19920305730 19920622
Publication Number
0520732 (A1)
Application Date
June 22, 1992
Publication Date
December 30, 1992
Inventor
Mcadon Mark H
US
Nickias Peter N
US
Stevens James C
US
Lapointe Robert E
US
Assignee
Dow Chemical Co
US
IPC
C08F 10/00
C08F 04/74
C08F 10/00
C08F 04/00
C07F 17/00
C08F 10/00
C08F 04/74
C08F 04/6592
C08F 04/643
C08F 04/64
C08F 04/42
C07F 17/00
C08F 04/60
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