| 摘要 |
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 <IMAGE> wherein R1 is H or lower (C1-C4) alkyl, R2 is (CH2-CH2-O)n, <IMAGE> or a mixture of both, and n is an integer of from about 1 to about 40, R3 is H, lower (C1-C4) 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.
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