Process for removing contaminating coatings from metal surfaces

Details Process for removing contaminating coatings from metal surfaces Process for removing contaminating coatings from metal surfaces

C - Chemistry, Metallurgy

23

G

C23G 1/14 (2006.01) C09D 9/00 (2006.01) C11D 1/72 (2006.01) C11D 1/825 (2006.01) C11D 3/20 (2006.01) C23G 1/20 (2006.01)

Patent

CA 2174410

The present invention relates to a process for removing contaminating coatings from metal surfaces, in which the metal surface to be cleaned is brought into contact with an aqueous alkaline solution which comprises as additive 0.1-10% by weight, based on the aqueous alkaline solu- tion, of at least one compound of the formula (I) R1-O-(CH2-CHR3-O-)XR2 (I) in which R1 and R2 are identical or different and are a C1-C15-alkyl group, R3 is hydrogen or a methyl group and x is an integer from 1 to 25.

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