Process for the reduction of color in polyphenylene oxide resins

Details Process for the reduction of color in polyphenylene oxide resins Process for the reduction of color in polyphenylene oxide resins

1976-01-19

1977-11-29

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 6544

Patent

active

040605140

ABSTRACT:
A process for the reduction in the color of polyphenylene oxide resins comprising contacting the oxide resin with a phase transfer agent and a dithionite or a thiosulfate reducing agent. The resulting polyphenylene oxide resins which are substantially free of color can be used to prepare improved molded, calendered, or extruded articles, films, coatings, threads, filaments, tapes and the like.

REFERENCES:
Starks, J. Am. Chem. Soc., 93, pp. 195-199 (1971).
Chem. Abstr. 8th Coll. Ind. 10376s-10378s (1973).

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