Method for reducing color formation in polyesters

Details Method for reducing color formation in polyesters Method for reducing color formation in polyesters

1977-09-19

1978-12-05

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528302, 528273, C08G 6316

Patent

active

041285352

ABSTRACT:
Color formation in a polyester formed of a saturated acid, a glycol and 1,4-butanediol can be reduced if, during preparation of the polyester, a reaction mass is first formed of the acid and the glycol and the butanediol is then added to the reaction mass after the acid-glycol reaction is practically complete.

REFERENCES:
patent: 3487049 (1969-12-01), Busot
patent: 3714126 (1973-01-01), Reid
patent: 3803210 (1974-04-01), Rod et al.
patent: 3859257 (1975-01-01), Schade et al.

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