Process for the production of readily dispersible pigment preparations
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsGunter Osswald, Willy Gouders
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Abstract
A process for the production of readily dispersible pigment preparations with a pigment content of more than 65% is disclosed. An aqueous suspension containing 25% to 50% by weight of a pigment is made and kneaded with heating to 60.degree.-70.degree. C. Following addition of a cation-active substance and an oleate, a binder dissolved in an organic solvent is added and a phase inversion takes place whereby water is separated out. After decantation, the organic mass of pigment is kneaded and dried.
Claims2
A process for the production of readily dispersible pigment preparations with a pigment content of more than 65% by weight, comprising suspending the pigment in water, to form a suspension having a solids content of 25 to 50% by weight, kneading the suspension, heating the pigment suspension while kneading to a temperature of 60.degree. to 70.degree. C., adding to the suspension a cationactive substance and an oleate, adding a binder dissolved in an organic solvent to the suspension while kneading, the water which is expressed from the kneaded suspension and the organic mass obtained thereby is continued to be kneaded and subsequently dried.
Dependencies are inferred from the claim text.