Poly-2(-2'-thiazolyl containing azo)-5-maleimide benzoic acid ch

Details Poly-2(-2'-thiazolyl containing azo)-5-maleimide benzoic acid ch Poly-2(-2'-thiazolyl containing azo)-5-maleimide benzoic acid ch

1982-03-01

1983-10-04

Anderson, Harold D.

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

Synthetic resins

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

525336, 525343, 525346, 525351, 525360, 525370, 525371, 526257, 526262, 528322, C08F 828, C08F 830, C08F 834

Patent

active

044080123

ABSTRACT:
A novel chelate polymer having the formula: ##STR1## wherein R is a 2-thiazolyl or 2-benzothiazolyl group, is produced by reacting polymaleimide, formaldehyde, and m-aminobenzoic acid in the presence of a solvent, then coupling the resultant reaction product with a diazotized compound of 2-aminothiazole or 2-aminobenzothiazole. The novel polymers thus produced are useful as metal indicators or pH indicators.

REFERENCES:
patent: 4233441 (1980-11-01), Gruber et al.
patent: 4233442 (1980-11-01), Gruber et al.

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