C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 11/167 (2006.01) C02F 5/10 (2006.01) C23F 11/173 (2006.01)
Patent
CA 2143405
A method for simultaneously controlling the deposition of scale and the formation of corrosion in a cooling water system comprising adding 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) alkyl and M is H or a water soluble cation, c is the molar percentage being between 0-95 molar %, d is the molar percentage being between 100-5 molar %, c and d should add up to 100%.
Bair Keith A.
Chen Fu
Freese Donald T.
Perez Libardo A.
Betz Laboratories Inc.
Borden Ladner Gervais Llp
Ge Betz Inc.
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