Process for producing block copolymer

Details Process for producing block copolymer Process for producing block copolymer

1985-07-02

1987-05-12

Bleutge, John C.

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

Synthetic resins

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

528356, 528357, 528366, C08G 6310

Patent

active

046651349

ABSTRACT:
A block copolymer having a narrow molecular weight distribution is produced by reacting an acid anhydride with an epoxide to yield a polyester, which is further reacted with a lactone, using a catalyst system comprising an aluminum porphyrin complex and an organic quaternary salt under mild reaction conditions.

REFERENCES:
patent: 3682865 (1972-08-01), Jenkins
patent: 4031165 (1977-06-01), Saiki
patent: 4500686 (1985-02-01), Kobayashi

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