Process for forming branched nitropolyphenylene

Details Process for forming branched nitropolyphenylene Process for forming branched nitropolyphenylene

1976-04-29

1977-11-22

Griffin, Ronald W.

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

Synthetic resins

Effecting a change in a polymerization process in response...

260 2H, 260 793R, 260 793A, 260668R, 260670, 526 43, 526 46, 526 49, 526346, C08F 800

Patent

active

040597199

ABSTRACT:
Solid aromatic polymers, such as branched polyphenylenes, are reacted with a reactive gas such as a NO.sub.2 -N.sub.2 O.sub.4 mixture, chlorine and sulfur trioxide without solvent or catalyst. The extent of reaction depends on reaction time and temperature and on the concentration of the reactive gas.

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