Patent ID: 6309697
Filing Date: 2001-10-30
Classification: C23F

Abstract:
Composition for conferring temporary protection from corrosion on metal surfaces comprising an oil-in-water emulsion comprising, in its aqueous phase, at least one compound of general formula I ##STR4##in which formula the R, R.sub.1 and R.sub.2 groups are, independently of one another, a hydrogen atom, a C.sub.1 to C.sub.20 alkyl group, a C.sub.1 to C.sub.20 haloalkyl group, with the halogen being chlorine, bromine, iodine or fluorine, a C.sub.3 to C.sub.6 cycloalkyl group, a carboxyl functional group or a C.sub.1 to C.sub.6 carboxyalkyl group,n is an integer varying from 1 to 3, andX is a sulphur or oxygen atom,in the form of one of its water-soluble salts,characterized in that the said emulsion is obtained by emulsification of an aqueous phase, in which the said compound of general formula I has been incorporated beforehand, with an oily phase.