Back to results
US 9,790,391 B2Granted
Preparation of high solid yellow pigment slurry
AssigneeBehr Process Corporation
InventorsYunfei Jiang, Laurence Teachout, Ming-Ren Tarng, Joseph Pace
Life of this patent
Estimating the term…
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.
Claims10
A method comprising:
- a) combining a dispersant having pigment affinic groups with water to form an aqueous dispersant mixture, the dispersant having polyacrylate backbone with polyetheramine side chains;
- b) adding at least one pigment to the aqueous dispersant mixture to form an aqueous pigment composition, the pigment has a color with a CIE 1931 color space dominant wavelength from 570 to 590 nm, the at least one pigment including 2-[(4-chloro-2-nitrophenyl)azo]-N-(2-chlorophenyl)-3-oxobutanamide;
- and
- c) grinding the aqueous pigment composition until the average particle size is less than 30 microns to form a pigmented aqueous slurry that provides a coating with contrast ratio greater than 68 when the pigmented aqueous slurry is incorporated in a paint composition.
1 more element
Dependencies are inferred from the claim text.