Process for improving color value of a pigment

Details Process for improving color value of a pigment Process for improving color value of a pigment

C - Chemistry, Metallurgy

09

B

C09B 67/00 (2006.01) C09B 67/10 (2006.01) C09D 11/10 (2006.01) C09D 11/14 (2006.01)

Patent

CA 2165363

A process for improving the color value of a pigment and for imparting stability to a water-based printing ink containing such pigment which comprises adding a polyester or polyether to the strike tank during the pigment conditioning step; the preferred polyether is methyl hydroxypropyl cellulose and the preferred polyester is benzoic acid-modified trimellitic anhydride polyester.

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