Composition and process for cleaning metals

Details Composition and process for cleaning metals Composition and process for cleaning metals

C - Chemistry, Metallurgy

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C23G 5/00 (2006.01) C11D 1/44 (2006.01) C11D 1/65 (2006.01) C11D 1/835 (2006.01) C11D 1/86 (2006.01) C11D 3/26 (2006.01) C11D 1/29 (2006.01) C11D 1/72 (2006.01) C11D 1/722 (2006.01)

Patent

CA 2099080

Abstract of the Disclosure The oil splitting properties of otherwise conventional alkaline cleaning solutions that comprise water, an alka- line builder, and a general surfactant component are sub- stantially improved by adding a special, nonionic, surfact- ant component that has an HLB value in the range from 1 to 7.9 and is made up of molecules that contain at least two nitrogen atoms per molecule and have a chemical structure that can be made by sequential additions of ethylene oxide followed by propylene oxide, or of propylene oxide followed by ethylene oxide, to core molecules that are most pref- erably 1,2-diaminoethane but more generally may be any organic amine that contains at least two primary and/or secondary amino groups and contains not more than 22 carbon atoms.

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