Soft textured high strength alkali blue pigment and process for preparing the same
AssigneeBASF SE
InventorsDoreswamy R. Iyengar, James J. Krikke
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Abstract
A process for preparing a soft textured high strength Alkali Blue pigment toner comprising preparing an initial mixture from an alkali metal hydroxide, Alkali Blue pigment, resin, oil or varnish, free fatty acid and water and adding a mineral acid to said mixture to precipitate the pigment product.
Claims13
A process for preparing a soft textured high strength Alkali Blue pigment toner comprising preparing an initial mixture from an alkali metal hydroxide, Alkali Blue pigment, resin, oil or varnish, free fatty acid and water, so that a spontaneous emulsion forms, and subsequently adding a mineral acid to said emulsion to precipitate the pigment product.
A process for preparing a soft textured high strength Alkali Blue pigment mixture from an alkali metal hydroxide, Alkali Blue pigment, resin, oil containing greater than 20 percent by weight of the oil component of a free fatty acid, and water so that a spontaneous emulsion forms, and adding a mineral acid to said mixture to precipitate the pigment product.
Dependencies are inferred from the claim text.