Color improvement and acetaldehyde reduction in high molecular w

Details Color improvement and acetaldehyde reduction in high molecular w Color improvement and acetaldehyde reduction in high molecular w

1981-12-28

1983-07-05

Phynes, Lucille M.

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

Synthetic resins

Treating polymer containing material or treating a solid...

210660, 210263, 528485, 528490, 528493, 528502, C08G 6370

Patent

active

043919715

ABSTRACT:
This invention relates to a method of improving the brightness and color of a polyester resin and reducing the acetaldehyde content by passing the resin through molecular sieves at a temperature of from 230.degree. C. to about 300.degree. C.

REFERENCES:
patent: 3669931 (1972-06-01), Annis et al.
patent: 4223128 (1980-09-01), Halek et al.

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