Catalysts for ring-opening copolymerization of cycloolefins

Details Catalysts for ring-opening copolymerization of cycloolefins Catalysts for ring-opening copolymerization of cycloolefins

1983-01-10

1983-11-15

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526169, 526281, C08F 478, C08F23208

Patent

active

044157150

ABSTRACT:
A catalyst for the ring-opening copolymerization of a hexachlorocyclopentadiene-1,5-cyclooctadiene adduct and a cycloolefin, other than cyclohexene, having 4 to 12 carbon atoms and containing at least one non-conjugated vinylene double bond. Owing to modification by oxy bidentate-type ligands, the chlorotungsten catalyst system affords a more favorable comonomer reactivity ratio and is thus utilized.

REFERENCES:
patent: 3439057 (1969-04-01), Colderon
patent: 3634374 (1972-01-01), Bell
patent: 3790543 (1974-02-01), Lehnert et al.
patent: 3849509 (1974-11-01), Streck et al.

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