Process for producing and polyester compositions comprising lact

Details Process for producing and polyester compositions comprising lact Process for producing and polyester compositions comprising lact

1992-06-03

1994-01-25

Seidleck, James J.

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

Synthetic resins

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

525418, 528257, 5283081, C08G 6368, C08G 7902

Patent

active

052816761

ABSTRACT:
Processes for producing and polyester compositions of intermediate and high molecular weights are attained by reacting with at least one lower molecular weight polyester with an effective amount of a lactamyl phosphite as a constituent. The reaction may be carried out by blending these constituents and any other optional constituents and is preferably formed by melt blending.

REFERENCES:
patent: 4568720 (1986-02-01), Aharoni et al.
patent: 5037897 (1991-08-01), Glans et al.
patent: 5070152 (1991-12-01), Glans et al.
patent: 5118805 (1992-06-01), Glans et al.
R. Mateva, Journal of Polymer Science, Part A--Polymer Chemistry 30 1449 (1992).

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