Process for producing novel block alkylene polycarbonate copolym

Details Process for producing novel block alkylene polycarbonate copolym Process for producing novel block alkylene polycarbonate copolym

1986-04-07

1987-05-12

Lilling, Herbert J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08G 6362

Patent

active

046651365

ABSTRACT:
The present invention is a novel class of block copolymers and a process of making the same. An alkylene oxide is reacted with CO.sub.2 in an organic solvent in the presence of an organometallic catalyst to form a polyalkylene carbonate. A second alkylene oxide is subsequently added without the addition of catalyst. The resulting product is a block copolymer comprising distinct, covalently linked, alkylene carbonate blocks.

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Raymond B. Seymour, Introduction to Polymer Chemistry, 1971, p. 204.
Fred W. Billmeyer, Jr., Textbook of Polymer Science, second edition, 1971, p. 351.

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