Process for improving the color quality of polyphenylene oxide w

Details Process for improving the color quality of polyphenylene oxide w Process for improving the color quality of polyphenylene oxide w

1987-07-31

1989-03-21

Anderson, Harold D.

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

Synthetic resins

Treating polymer containing material or treating a solid...

524315, 524611, 528486, C08G 6546

Patent

active

048144312

ABSTRACT:
A process for improving the color quality of PPE or molding compounds containing PPE, comprising adding an .alpha.,.beta.-unsaturated ester of the formula: ##STR1## to the organic PPE solution prior to heating it to temperatures above 150.degree. C. R.sub.a and R.sub.b are independently H, CH.sub.3, COOR.sub.c, or Ph, and R.sub.c is a C.sub.1-10 alkyl group.

REFERENCES:
patent: 4237265 (1980-12-01), Gliassen et al.
patent: 4263426 (1981-04-01), Cooper et al.
patent: 4460764 (1984-07-01), Reffert et al.

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