Copolymers of ethylenically unsaturated and polyethylene-glycol

Details Copolymers of ethylenically unsaturated and polyethylene-glycol Copolymers of ethylenically unsaturated and polyethylene-glycol

1993-04-27

1994-09-27

Willis, Jr., Prince

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

252 82, 210698, C02F 510

Patent

active

053505360

ABSTRACT:
A composition for controlling the deposition of scale imparting species on the structural surfaces of steam generating systems comprising the use of a water soluble polymer having the structure ##STR1## wherein R.sub.1 is H or lower (C.sub.1 14 C.sub.4) alkyl, R.sub.2 is (CH.sub.2 --CH.sub.2 --O).sub.n, ##STR2## or a mixture of both, and n is an integer of from about 1 to about 40, R.sub.3 is H, lower (C.sub.1-C.sub.4) alkyl or an acetate. This polymer may also be used in concert with topping agents such as phosphoric acids, phosphonic acids, amines, metal chelating agents and oxygen scavengers.

REFERENCES:
patent: 4326980 (1982-04-01), Snyder et al.
patent: 4443340 (1984-04-01), May et al.
patent: 4457847 (1984-07-01), Lorenc et al.
patent: 4659482 (1987-04-01), Chen
patent: 4828713 (1989-05-01), McDonald et al.
patent: 5124046 (1992-06-01), Sherwood et al.
patent: 5259985 (1993-11-01), Nakanishi et al.

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