Polymer stabilizers

Details Polymer stabilizers Polymer stabilizers

1981-03-20

1983-08-02

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524190, 524205, 524237, 524548, 524549, 524556, C08K 523

Patent

active

043967345

ABSTRACT:
Polymer thickeners having a viscosity of at least 10 K, employed in acid media are stabilized with Redox indicators having from 6 to 30 carbon atoms, such as, for example, methylene blue, phenosafranine, pyronine Y, tartrazine, amaranth, methyl orange, an alkali metal salt of diphenylamine sulfonate and malachite green oxalate, which stabilizers are combined with the polymer in a concentration of between about 0.005 to about 1 weight %.

REFERENCES:
patent: 3906513 (1975-09-01), Siegelman
patent: 4066595 (1978-01-01), Bunge
patent: 4163001 (1979-07-01), Carumpalos
patent: 4197087 (1980-04-01), Ami
patent: 4205998 (1980-06-01), Becker
patent: 4225475 (1980-09-01), Carumpalos
patent: 4248636 (1981-02-01), Sasaki

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