High lead solder corrosion inhibitors

Details High lead solder corrosion inhibitors High lead solder corrosion inhibitors

C - Chemistry, Metallurgy

09

K

31/41

C09K 5/00 (2006.01) C09K 5/20 (2006.01) C23F 11/10 (2006.01)

Patent

CA 1189304

HIGH LEAD SOLDER CORROSION INHIBITORS Abstract of the Disclosure Compositions and method of using said compositions for inhibiting mineral scale and the corrosion of high lead solder and the cavitation-erosion corrosion of aluminum in aqueous systems are disclosed. Unexpectedly, a mixture of a siloxane-silicate copolymer with an azole is effective in reducing the corrosion of high lead solder and aluminum, particularly the cavitation-erosion corrosion of aluminum in contact with aqueous liquids, such as aqueous alcohol solutions used as heat transfer media. Antifreeze concen- trates and a process for inhibiting corrosion are also disclosed.

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