Process for preparing novel copolymer

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524767, 5263075, C08K 505

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active

046394907

ABSTRACT:
A process is disclosed for preparing a random copolymer which consists essentially of a copolymer of (i) acrylic acid or methacrylic acid (together "(meth)acrylic"), (ii) acrylamide or methacrylamide (together "(meth)acrylamide"), and (iii) an alkoxyalkyl (meth)acrylate ester ("AAE") present in specified relative proportions. The copolymer is made in alcohol or a mixture of alcohol and water in the presence of an effective amount of initiator, without making a homopolymer or copolymer which is insoluble in water. The random copolymer need not be, and is not separated from the polymerization reaction mixture which is soluble in water, and is surprisingly effective in the treatment of industrial process water used in recirculating water systems, particularly with respect to inhibiting the deposition of calcium phosphate on surfaces of equipment used in such systems.

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patent: 3450660 (1969-06-01), Sekmakas
patent: 3894980 (1975-07-01), De Tommaso
patent: 3988305 (1976-10-01), Stol et al.
patent: 4323463 (1982-04-01), Morduchowitz
patent: 4404309 (1983-09-01), Masler, III
patent: 4499002 (1985-02-01), Masler, III et al.

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