Process for preparing pigment compositions

Details Process for preparing pigment compositions Process for preparing pigment compositions

C - Chemistry, Metallurgy

09

D

6/194, 400/7029

C09D 17/00 (2006.01) C09B 67/00 (2006.01) C09C 1/62 (2006.01)

Patent

CA 1232409

ABSTRACT "PROCESS FOR PREPARING PIGMENT COMPOSITIONS" The invention relates to a process for preparing low- or non-dusting substantially completely non-volatile metal pigment compositions by forming a coherent paste comprising an organic binder medium, an organic liquid vehicle and metal pigment, in powder or flake form, the paste being formed by mixing a first component comprising the organic binder medium and a second component comprising metal pigment with either or both of the first and second components comprising organic liquid vehicle and the paste containing from 1 to 70 percent, preferably from 3 to 45 percent, of the organic binder medium based on the weight of the metal pigment, and removing substantially all of the organic liquid vehicle(s) from the coherent paste, optionally after sub-dividing the coherent paste into particles, such as pellets, tablets or granules. The resulting solid metal pigment composition comprises metal pigment particles dispersed in a matrix of the organic binder material.

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