C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
117/217, 31/58
C23F 11/14 (2006.01) C02F 5/12 (2006.01)
Patent
CA 1329073
Abstract of the Disclosure A method of providing a durable, long lasting chemi- cally resistant, pH tolerant, corrosion inhibiting film on the sur- fact of copper or copper containing metal in contact with an aggres- sive aqueous system is disclosed. The copper or copper containing metal generally composes a structure of dynamic cooling water system, and protection is afforded thereto by intermittently feeding to the aqueous medium a sufficient amount of a C3 to C6 alkyl substituted benzotriazole.
560323
Betzdearborn Inc.
Borden Ladner Gervais Llp
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