Patent ID: 6565663
Filing Date: 2003-05-20
Classification: C11D,C23G

Abstract:
A process for the washing of metal surfaces which comprises applying a composition comprising at least 40% by weight of, as a solvent, an organic carbonate having formula (I) wherein:n=1-4 R and Râ€² are two linear or branched alkyl radicals which contain a number of carbon atoms whose sum is equal to at least 5 and which can be the same or different, onto a metal surface contaminated by fluids, optionally charged with solids, either manually or by spraying or by immersion in a tank, wherein said applying is at atmospheric pressure, at a temperature ranging from 20Â° C. up to the flash point of the organic carbonate, wherein the composition additionally contains additives comprising corrosion inhibitors, non-ionic wetting agents and water, which composition is applied as an aqueous emulsion.