Pigment dispersant for aqueous paints

Details Pigment dispersant for aqueous paints Pigment dispersant for aqueous paints

C - Chemistry, Metallurgy

08

F

402/296, 402/372

C08F 120/06 (2006.01) B01F 17/00 (2006.01) C08F 122/02 (2006.01) C08J 3/22 (2006.01) C08L 57/00 (2006.01) C09B 67/20 (2006.01) C09B 67/46 (2006.01) C09D 17/00 (2006.01) C09D 133/02 (2006.01) C09D 133/06 (2006.01)

Patent

CA 1129147

Abstract of the Disclosure Described herein, is a pigment paste for use in an aqueous paint comprising a film-forming latex polymer, a pig ment and a dispersant copolymer. Also described is the dispersant copolymer which serves the function of dispersing the pigment in the preparation of the paste and maintaining the dispersion in the paste and paint made therefrom. The dispersant copolymer is such that its complex salt formed with Zn++ and ammonia is water-soluble at a pH of 9.6. The dispersant is a copolymer of an .alpha.,.beta.-unsaturated monovinylidene carboxylic acid and at least one other ethylenically unsaturated monomer. The dispersant is particularly adapted to preparing paste for difficult-to-formulate paints such as paints with re- active pigments and paints requiring high levels of dispersant.

310949

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