Polymer stabilizers

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

400/9202, 400/92

C08K 5/00 (2006.01) C08K 5/16 (2006.01) C09K 13/00 (2006.01)

Patent

CA 1156775

FDN-1122 POLYMER STABILIZERS 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, and 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 %.

396804

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