Dry water-dispersible pigment compositions

Details Dry water-dispersible pigment compositions Dry water-dispersible pigment compositions

C - Chemistry, Metallurgy

09

B

400/1326

C09B 67/00 (2006.01) C08L 1/26 (2006.01) C08L 71/02 (2006.01) C09B 67/20 (2006.01) C09D 17/00 (2006.01) C09D 101/26 (2006.01)

Patent

CA 1077178

DRY WATER-DISPERSIBLE PIGMENT COMPOSITIONS Abstract of the Disclosure Dry, non-dusting pigment compositions which are water- dispersible and which develop good strength and color values upon stirring in water-borne industrial finish systems are described. The pigment compositions contain 55 to 80% pigment and, by weight of the pigment, from 15 to 45% of certain nonionic dispersings agents and from 10 to 67% of at least one water-soluble cellulose ether which is nonionic in nature and has a viscosity of less than 1000 cps. as measured on a 2% aqueous solution at 25°C. The pigment compositions are preferably prepared by milling the pig- ment in water in the presence of the nonionic dispersing agent, mixing the milled pigment dispersion with the cellulose ether and then removing the water from the resulting mixture. - 1 -

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