Catalyst composition for polymerization of cycloolefins

Details Catalyst composition for polymerization of cycloolefins Catalyst composition for polymerization of cycloolefins

1986-03-27

1987-09-29

Garvin, Patrick P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526281, 526283, C08F 462

Patent

active

046969853

ABSTRACT:
The invention relates to a catalyst composition for polymerization of norbornene-type monomer: including WCl.sub.4 O and WCl.sub.6 in a molar ratio of WCl.sub.4 O to WCl.sub.6 from 1:9 to 1:1 (i.e., 10-50% WOCl.sub.4 and 90-50% WCl.sub.6). The method of making catalyst includes: providing catalyst precursor material, the major portion of which is WCl.sub.6, and contacting controlled proportions of the oxygen donor and WCl.sub.6 to form WCl.sub.4 O in a molar ratio to WCl.sub.6 of between 1:9 and 1:1.

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