Polyaryloxyphosphazene caustic wash

Details Polyaryloxyphosphazene caustic wash Polyaryloxyphosphazene caustic wash

1987-04-27

1988-12-06

Anderson, Harold D.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528168, 528398, 528399, 528488, 528496, C08G 7300

Patent

active

047897287

ABSTRACT:
Phenolic impurities are removed from polyaryloxyphosphazenes by extracting a solution of the crude polyaryloxyphosphazene with an aqueous lower alcohol alkali metal base solution such as aqueous methanolic sodium hydroxide.

REFERENCES:
patent: 4663420 (1987-05-01), Chang

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