Patent ID: 7867614

Claim:
A method of surface modification of an organophilic clay material, comprising: introducing a portion of a dry, pulverulent, organophilic clay material to a high-shear mixing assembly; introducing a portion of at least one additive for surface modification of the organophilic clay material to the high-shear mixing assembly; and intensively mixing the dry, pulverulent, organophilic clay material portion and the at least one additive portion in the high-shear mixing assembly such that an increase in a bulk density of the organophilic clay material of at least 20% is achieved, based on an initial bulk density of the dry, pulverulent, organophilic clay material used; wherein no water or solvent is added or used for introduction of the at least one additive portion to the high-shear mixing assembly, and wherein the at least one additive portion comprises siloxane components and at least one additive portion selected from the group consisting of fatty acids, fatty acid derivatives, non-ionic organic components with at least one aliphatic or cyclic radical having 6 to 32 carbon atoms, and mixtures thereof.