| abstract |
The present disclosure provides a method for preparing a self-dispersing pigment having an isoelectric point of at least about 8, the method comprising: (a) adding a difunctional compound to an acidic aluminum salt to form an aqueous solution; A step in which the bifunctional compound comprises a fixing group that attaches the bifunctional compound to the pigment surface and a basic amine group comprising a primary, secondary, or tertiary amine; (b) step (a) Adding a base to the mixture from thereby increasing the pH to about 4 to about 9 to form a turbid liquid; and (c) adding the mixture from step (b) to the slurry of inorganic particles, thereby A hydrated alumina and a bifunctional compound are deposited on the pigment surface. The self-dispersing pigment prepared by this method is useful for producing decorative paper that can be used in a paper laminate. |