Patent ID: 8809429

Claim:
A process for producing an aqueous pigment anti-settling agent consisting of: mixing [A] and at least one of [B] or [C], wherein [A] is a polyamide obtained by reacting a diamine having 2 to 34 carbon atoms and an excess amount with respect to the diamine of a dicarboxylic acid having 4 to 36 carbon atoms or a mixture of a dicarboxylic acid having 4 to 36 carbon atoms and a monocarboxylic acid having 2 to 22 carbon atoms, wherein [B] is an amide wax obtained by reacting a monocarboxylic acid having 2 to 22 carbon atoms and a diamine having 2 to 12 carbon atoms and/or a monoamine having 2 to 22 carbon atoms and, wherein [C] is hydrogenated castor oil which is generated by adding hydrogen to castor oil; neutralizing the obtained mixture with a base; then, dispersing the obtained neutralized product into a medium mainly composed of water; and optionally, heat-treating the obtained dispersion.