Use of carboxylic acid/sulfonic acid copolymers as aluminum ion

Details Use of carboxylic acid/sulfonic acid copolymers as aluminum ion Use of carboxylic acid/sulfonic acid copolymers as aluminum ion

1986-04-03

1987-09-15

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

210701, 252180, 252181, 422 16, C02F 512

Patent

active

046938290

ABSTRACT:
The present invention is directed to a method to stabilize aluminum ions in recirculating water systems comprising adding to the system 0.1 to 1,000 ppm of a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g in 1.0 M NaCl, prepared from:
(A) 35 to 90%, by weight, of an unsaturated carboxylic compound selected from the group consisting of acrylic acid, methacrylic acid, their salts and mixtures thereof; and
(B) 10 to 65%, by weight, of an unsaturated sulfonic compound selected from the group consisting of 2-acrylamido-2-methylpropylsulfonic acid, 2-methacrylamido-2-methylpropylsulfonic acid, their salts and mixtures thereof.

REFERENCES:
patent: 3709816 (1973-01-01), Walker et al.
patent: 3806367 (1974-04-01), Lange et al.
patent: 3928196 (1975-12-01), Persinski et al.

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