Method of improving storage stability of pigments

Details Method of improving storage stability of pigments Method of improving storage stability of pigments

C - Chemistry, Metallurgy

09

B

C09B 67/08 (2006.01) C09B 67/20 (2006.01)

Patent

CA 2076143

P-18755/A/MA 2039 ABSTRACT OF DISCLOSURE Method of Improving Storage Stability of Pigments A method of improving the storage stability of a coloured organic pigment in powder form which comprises coating pigment particles with a solid polymer which is a polar group - containing vinyl polymer, said polar group being a hydroxy, carboxyl, carboxylic ester, anhydride or carboxamide group, or a cellulosic polymer, thereby inhibiting reduction of tinting strength of the pigment on storage.

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