Process for preparing arylarsine substituted polystyrene

Details Process for preparing arylarsine substituted polystyrene Process for preparing arylarsine substituted polystyrene

1979-08-27

1980-09-16

Hamrock, William F.

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

Synthetic resins

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

525357, 525358, 525359, 525360, 525364, 525388, C08F 822, C08F 824, C08F 842

Patent

active

042231116

ABSTRACT:
A process is described for the preparation of a polymer having a recurring unit of the formula: ##STR1## where R is hydrogen or methyl, C.sub.n H.sub.2n is lower-alkylene, R.sub.1 and R.sub.2 are aryl and x is 0 or 1. A polymer having a recurring unit of the formula: ##STR2## where X is chloro, bromo, iodo, chloroalkyl, bromoalkyl or iodoalkyl, is reacted with a triarylarsine in the presence of lithium or sodium-potassium alloy. The resulting polymer is an intermediate in the preparation, by oxidation, of the corresponding As-oxide. The latter is useful as a catalyst for the conversion of isocyanates to the corresponding carbodiimides.

REFERENCES:
patent: 3711429 (1973-01-01), Ito et al.
patent: 4098973 (1978-07-01), Smith
patent: 4137386 (1979-01-01), Smith
patent: 4143063 (1979-03-01), Alberino et al.

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