Process for improving the color of resinous compositions

Details Process for improving the color of resinous compositions Process for improving the color of resinous compositions

1978-03-07

1979-09-25

Lee, Lester L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528211, 528212, 528215, 528217, 528490, 528492, 525152, 525379, 528492, C08G 6546

Patent

active

041691148

ABSTRACT:
There is provided a process for improving the color of resinous compositions consisting of, or including, polyphenylene ether resins by contacting such resins with an amine. The process is carried out generally at elevated temperatures and pressures with either a primary, secondary or tertiary amine.

REFERENCES:
patent: 3306874 (1967-02-01), Hay
patent: 3573257 (1971-03-01), Nakashio et al.
patent: 3663661 (1972-05-01), Katchman

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