Patent ID: 6194033
Filing Date: 2001-02-27
Classification: C09D

Abstract:
A rust-preventive composition comprising the following components;(A) an aromatic compound i) containing in one molecule at least one group selected from the group consisting of an --N.dbd.N-- group, a >C.dbd.N-- group, a >C.dbd.O group and an --N.dbd.O group and ii) having an absorption band in a visible region of from 530 nm to 750 nm;(B) a colloidal silica;(C) a film-forming polymeric compound containing in one molecule a group selected from the group consisting of an --OH group and a --COOH group; and(D) an organic solvent,wherein the component (A) aromatic compound is a compound selected from the group consisting of a direct dye, an acid dye, a basic dye, a mordant dye, an acid mordant dye, a vat dye, a disperse dye, an oil color, a reactive dye and a food colorant being soluble in organic solvent (D), andwherein the component (B) and the component (C) are present in amounts of from 10 parts by weight to 1,000 parts by weight and from 1 part by weight to 500 parts by weight, respectively, based on 100 parts by weight of component (A) and component (D) is present in such an amount that the components (A) to (C) are in a concentration of from 0.1 to 25% by weight in total in the whole composition.