Method of making and polymer of heat resistant polyester using d

Details Method of making and polymer of heat resistant polyester using d Method of making and polymer of heat resistant polyester using d

1983-10-11

1984-07-10

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...

528288, 528289, 528297, C08G 6376

Patent

active

044593902

ABSTRACT:
This invention is a polymer and a method of making heat resistant polyester which is characterized by reacting the polyester which consists of aromatic dicarboxylic acid and glycol with 2-6 carbons, with 0.1-5 weight % of the bifunctional epoxy compound which has one carbonyl group adjacent to the nitrogen atom and is expressed by the general formula ##STR1## (R is a divalent organic group) to keep the amount of end carboxyl group below 15 g equivalent/10.sup.6 g polymer.

REFERENCES:
patent: 4130601 (1978-12-01), Ohoka et al.
patent: 4139521 (1979-02-01), Lazarus et al.
patent: 4196066 (1980-04-01), Inata et al.
patent: 4269947 (1981-05-01), Inata et al.
patent: 4351936 (1982-09-01), Matsumura et al.

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