Process for preparing extended chain polyesters and block or gra

Details Process for preparing extended chain polyesters and block or gra Process for preparing extended chain polyesters and block or gra

1985-02-25

1986-02-04

Phynes, Lucille M.

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

Synthetic resins

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

525418, 525437, 528287, 5283082, C08G 6376, C08L 6700

Patent

active

045687200

ABSTRACT:
A process for preparing extended chain polyesters, and block or graft polyester or copolyesters by forming an intimate mixture of one or more polyesters and an effective amount of one or more phosphite compounds, and thereafter heating the intimate mixture at a temperature and for a time sufficient to form the desired amount of the desired polyester or co-polyester.

REFERENCES:
patent: 3551548 (1970-12-01), Brignac et al.
patent: 3776806 (1973-12-01), Mayer et al.
patent: 4031165 (1977-06-01), Saiki et al.
patent: 4390667 (1983-06-01), Aharoni et al.
patent: 4417031 (1983-11-01), Aharoni et al.
patent: 4417032 (1983-11-01), Khanna et al.

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