Highly concentrated, storage-stable and heat-resistant, flowable aqueous dispersion of active ingredients which are sparingly soluble or insoluble in water

Abstract

Abstract The dispersion contains (a) from 30 to 60% by weight of one or more active ingredients having a mean particle size of less than 5μ, (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 5μ. Depending on the active ingredient present, the dispersion may be used, inter alia, as a finishing agent for plastics, paper or textiles.

Inventors

• 👤 Hans D. Kirner
• 👤 Jacques Wegmann, deceased

Bibliographic Details