| 摘要 |
The dispersion contains (a) from 30 to 60% by weight of one or more active ingredients having a mean particle size of less than 5 mu , (b) from 0.1 to 5% by weight of one or more water-soluble homopolymers or copolymers of a N-vinyl-lactam, (c) from 0.1 to 5% by weight of one or more anionic compounds devoid of dispersant character, (d) from 0 to 30% by weight of one or more humectants and (e) water. The active ingredient is sparingly soluble or insoluble in water. The copolymer may be derived from two or more different N-vinyl-lactams or from one or more N-vinyl-lactams and one or more other compounds copolymerizable therewith. The anionic compound or compounds is or are chosen from the group comprising water-soluble alkali metal salts or ammonium salts of aromatic monosulfonic acids, disulfonic acids and trisulfonic acids, which acids may be substituted by alkyl groups of at most 8 carbon atoms or by a cycloalkyl group of at most 6 carbon atoms. The dispersion is prepared by wet milling of corresponding amounts of components (a), (b), (c) and (d) until the mean particle sizse of component (a) is less than 5 mu . Depending on the active ingredient present, the dispersion may be used, inter alia, as a finishing agent for plastics, paper or textiles. |
