Method for decolorizing polyphenylene ether resins

Details Method for decolorizing polyphenylene ether resins Method for decolorizing polyphenylene ether resins

1997-01-24

1998-06-02

Truong, Duc

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

Synthetic resins

Treating polymer containing material or treating a solid...

528212, 528218, 528219, 525132, 525152, 525534, 524292, 524323, 524346, 524347, 524348, C08F 600

Patent

active

057601712

ABSTRACT:
Polyphenylene ethers are decolorized by contact in the melt or in solution with a hydroxy compound containing either another hydroxy group or a double or aromatic bond in a specific location in the molecule. Illustrative decolorizing compounds are benzopinacol, benzoin and acetoin.

REFERENCES:
patent: 4060514 (1977-11-01), White
patent: 4695601 (1987-09-01), Halpern

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