Solid silica preparation

摘要

The present invention relates to solid silica preparations composed of the components
(A) 20% to 80% by weight, based on the total weight of the preparation, of a silica;(B) 20% to 50% by weight, based on the total weight of the preparation, of at least one additive selected from the group consisting of a water-soluble, nonionic, surface-active additive based on polyethers, a water-soluble, surface-active additive containing carboxylate groups, a polyurethane, an anionic, surface-active additive based on acidic phosphoric, phosphonic, sulfuric or sulfonic esters;(C) if appropriate, further components, the further components comprising no pigments, and the sum of all components (A), (B), and (C) making 100% by weight.;The invention further relates to methods of producing them and also to methods of coloring high molecular mass organic or inorganic materials, more particularly of coloring plastics.

主权项

1. A solid silica preparation in granule form comprising
(A) 30% to 60% by weight, based on the total weight of the preparation, of a silica; (B) 20% to 50% by weight, based on the total weight of the preparation, of at least one additive selected from the group consisting of a water-soluble, nonionic, surface-active additive based on polyethers, a water-soluble, surface-active additive comprising carboxylate groups, a polyurethane, and an anionic, surface-active additive based on acidic phosphoric, phosphonic, sulfuric or sulfonic esters; (C) further components comprising no pigments, wherein component (C) comprises 0.1% to 5% by weight, based on the total weight of the preparation, of an antioxidant, and the sum of all components (A), (B), and (C) comprise 100% by weight of the solid silica preparation.