Patent ID: 6365100
Filing Date: 2002-04-02
Classification: C07C,C10M,C10N,C23F

Abstract:
Process for limiting the carbonic corrosion of steel in aqueous media, wherein said process comprises adding to a steel containing aqueous media an aqueous composition comprising a non-ecotoxic corrosion inhibitor which is at least one of the polymethylenepolyaminedipropionamides compounds corresponding to the formula:H2NCOâ€”(CH)2â€”NHâ€”(â€”(CH2)nâ€”NHâ€”)mâ€”(CH2)2â€”CONH2 in which m is an integer from 1 to 4, which represents the number of polymethyleneamino â€”(CH2)nâ€”NHâ€” chain units, n having, in each polymethyleneamino chain unit, an integer value from 2 to 6, with the proviso that the polymethylenepolyaminedipropionamide compound is not tripropylenetetraamine dipropionamide.