Patent ID: 6939912

Claim:
A method of solubilizing a water-insoluble ingredient of a composition which comprises adding to the composition an effective amount of at least one N-vinylcarboxamide copolymer, and wherein the composition comprises water and the water-insoluble ingredient; the water-insoluble ingredient is an active ingredient or auxiliary for pharmaceutical or cosmetic use, for crop treatment or for nutrition technology, and the N-vinylcarboxamide copolymer is composed of A) from 5 to 99% by weight of at least one N-vinylcarboxamide of the formula I where R 1 and R 2 independently of one another are hydrogen or C 1 -C 6 -alkyl; B) from 1 to 95% by weight of at least one monomer having a hydrophobic radical which can be copolymerized with vinylcarboxamides of the formula I and is selected from b1) esters of monoethylenically unsaturated C 3 -C 8 -carboxylic acids with aliphatic or cycloaliphatic C 8 -C 30 -alcohols; b2) amides of monoethylenically unsaturated C 3 -C 8 -carboxylic acids with primary or secondary amines having at least one aliphatic or cycloaliphatic C 8 -C 30 -radical; b3) vinyl esters of aliphatic or cycloaliphatic C 8 -C 30 -carboxylic acids; or b4) vinyl ethers of aliphatic or cycloaliphatic C 8 -C 30 -alcohols; and C) from 0 to 94% by weight of at least one other copolymerizable monomer.