METHOD OF INHIBITING SCALE AND CONTROLLING CORROSION IN COOLING WATER SYSTEMS

摘要

A method for simultaneously controlling the deposition of scaleand the formation of corrosion in a cooling water system comprisingadding to the system a water soluble copolymer having the structure:(see formula I)wherein R1 is H or lower (C1-C4) alkyl, R2 is (CH2-CH2-O)n,(see formula II)or mixture of both, n is an integer of from 1 to about 40, R3 is H, lower(C1-C4) alkyl or an acetate, R4 is H or COOM, R5 is H or (C1-C4) alkyland M is H or a water soluble cation, c is the molar percentage beingbetween 0-95 molar %, d is the molar percentage being between 100-5molar %, c and d should add up to 100%.