Reduction of catalyst usage in epoxide/CO.sub.2 polymerization

Details Reduction of catalyst usage in epoxide/CO.sub.2 polymerization Reduction of catalyst usage in epoxide/CO.sub.2 polymerization

1987-12-18

1988-12-06

Nielsen, Earl

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

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

528406, C08G 6342

Patent

active

047897279

ABSTRACT:
The catalyst efficiency of zinc carboxylate catalyst in the copolymerization of alkylene oxides with carbon dioxide to form polycarbonates has been increased by the addition of a small amount of certain diepoxides to the reaction.

REFERENCES:
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patent: 3706713 (1972-12-01), Hull et al.
patent: 3896090 (1975-07-01), Maximovich
patent: 3953383 (1976-04-01), Inoue et al.
patent: 4166898 (1979-09-01), Kambe et al.
patent: 4500704 (1985-02-01), Kruper et al.
patent: 4686276 (1987-08-01), Myers

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