Method of making and a polymer of heat resistant polyester using

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

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...

525444, 528288, 528289, 528292, 528296, 528297, C08G 6376

Patent

active

044593910

ABSTRACT:
This invention is a method of making and polymer of heat resistant polyester, being characterized by the reaction product of a polyester which consists of the aromatic dicarboxylic acid and a glycol with 2-6 carbons reacted with 0.2-5 weight % of a bifunctional epoxy compound which is expressed by the general formula ##STR1## wherein R is benzene ring, naphthalene ring, cyclohexane ring, cyclohexene ring or pyridine ring; and R may have a substitution group to keep the amount of the end carboxyl groups below 15 gram equivalents per 10.sup.6 grams of polymer.

REFERENCES:
patent: 4069209 (1978-01-01), Lange
patent: 4348500 (1982-09-01), Robeson et al.
patent: 4365046 (1982-12-01), Pesata et al.

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