Title:
TUNGSTEN-IMIDO CATALYST FOR RING-OPENING METATHESIS POLYMERIZATION OF CYCLOOLEFIN
Document Type and Number:
Japanese Patent JP3113091
Kind Code:
B2
Abstract:
PURPOSE: To obtain a ring-opening catalyst comprising a specific tungsten-imido compound and an activator compound, which catalyzes the polymerization of strained ring non-conjugated polycyclic cycloolefins until the level of the residual monomer is lowered.
CONSTITUTION: A catalytic system for ring-opening metathesis polymerization of strained ring non-conjugated polycyclic cycloolefins (especifically dicyclopentadiene) which is a catalyst composition comprising (A) the tungsten- imido compound of the formula (wherein x is 0 to 4; y is 0 or 1; R1 and R2 are each 1-8C alkyl, 12-18C phenyl-substituted phenyl, 7-20C phenylalkyl or the like; X is Br or Cl; L is a donor ligand such as diethyl ether, pyridine or the like), (B) an activator (e.g. tri-n-butyltin hydride, tri-octyltin hydride) and, if required, a stabilizer and a rate controlling agent. This catalyst composition is used in an amount which enables the ratio of cycloolefin to A to be from 500:1 to 15,000:1 and the ratio of A to B to be from 1:1 to 1:8 on a molar basis.
Inventors:
Andrew Bell
Application Number:
JP25239492A
Publication Date:
November 27, 2000
Filing Date:
September 22, 1992
Export Citation:
Assignee:
Teijin Meton Co., Ltd.
International Classes:
C08F4/69; C08F4/60; C08F4/80; C08F32/00; C08F32/08; C08G61/02; C08G61/06; C08G61/08; (IPC1-7): C08G61/02
Other References:
【文献】欧州特許出願公開303969(EP,A2)
Attorney, Agent or Firm:
Sumihiro Maeda