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US 10,246,600 B2Granted
Preparation of high solid yellow pigment slurry
AssigneeBehr Process Corporation
InventorsYunfei Jiang, Laurence Teachout, Ming-Ren Tarng, Joseph Pace
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Abstract
A method for forming a pigmented aqueous slurry includes a step of combining a dispersant having pigment affinic groups with water to form an aqueous dispersant mixture. Pigment is added to the aqueous dispersant mixture to form an aqueous pigment mixture. The aqueous pigment composition is ground until the average particle size is less than 30 microns to form a pigmented aqueous slurry.
Claims9
A method comprising:
- a) combining a dispersant having pigment affinic groups with water to form an aqueous dispersant mixture, the dispersant having pigment affinic groups including a polyacrylate backbone and polyetheramine side chains attached to the polyacrylate backbone, further including an additional dispersant that is ammonium salt of a polycarboxylated polymer or copolymer;
- b) adding at least one pigment to the aqueous dispersant mixture to form an aqueous pigment composition;
- and
- c) grinding the aqueous pigment composition until the average particle size is less than 30 microns to form a pigmented aqueous slurry, the aqueous pigment composition including about 30 to 60 weight percent pigment wherein the pigment has a color with a CIE 1931 color space dominant wavelength from 570 to 590 nm.
1 more element
Dependencies are inferred from the claim text.