Process for producing lactone polyesters

Details Process for producing lactone polyesters Process for producing lactone polyesters

1979-11-28

1981-09-15

Nielsen, Earl A.

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

Synthetic resins

From carboxylic acid or derivative thereof

C08G 6310

Patent

active

042898730

ABSTRACT:
In a process for producing a lactone polyester which comprises ring-opening polymerization of a lactone in the presence of a metal containing organic compound as a catalyst, the improvement wherein said compound is an alcoholate, chelate or organic acid salt of vanadium or molybdenum.

REFERENCES:
patent: 2878236 (1959-03-01), Young et al.
patent: 2933478 (1960-04-01), Young et al.
patent: 3021313 (1962-02-01), Cox et al.
patent: 3382217 (1968-05-01), Case
patent: 3391126 (1968-07-01), Baggett et al.

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