Patent ID: 6521579
Filing Date: 2003-02-18
Classification: C23F,C23G

Abstract:
A method of cleaning a metal while simultaneously providing a corrosion inhibitor to said metal, said method comprising the step of applying to a metal needing cleaning an aqueous solution comprising a compound of general formula (I) general formula (II), or a mixture of (I) and (II),in whichR is a substituted or unsubstituted, straight-chain or branched hydrocarbon radical having from 8 to 18 carbon atoms, Ra, Rb, and Rc, independently of one another are cations of the alkali metal group, ammonium salts or the protonated radical of an amine, Rd is hydrogen or a C1 to C18 alkyl radical which may optionally be branched and/or may contain double bonds, and the quantitative ratio of the formulae (I):(II) is from 2:0 to 0:2.