Polymer blend for dispersion of particulate materials in aqueous

Details Polymer blend for dispersion of particulate materials in aqueous Polymer blend for dispersion of particulate materials in aqueous

1985-12-23

1987-10-06

Ziegler, Jacob

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

210698, 210732, 210733, 210734, 524501, 525205, 525206, 525207, C02F 100

Patent

active

046981616

ABSTRACT:
Particulate materials in aqueous media such as heat exchange systems are dispersed by introducing into the system a polymer blend comprising about 50 to 99% by weight of (A) a water-soluble, dissociating, low molecular weight polymer of at least one alpha, beta-monoethylenically unsaturated carboxylic acid, and about 50 to 1% by weight of (B) a water-soluble, dissociating, lower molecular weight polymer selected from (1) vinyl aromatic polymers and (2) polymers of 2-acrylamido-2-methylpropanesulfonic acid. A typical polymer blend comprises, in neutralized form, (A) polyacrylic acid terminated with thioglycolic acid and (B) a polymer of sulfonated styrene and maleic anhydride.

REFERENCES:
patent: 4374733 (1983-02-01), Snyder et al.
patent: 4384979 (1983-05-01), Hansen

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