N- vinyl lactams / vinylimidazole copolymer as a dispersant

The present invention relates to a copolymer of the vinyl lactam and N- vinylimidazole or quaternized vinylimidazole in polymerized form in the aqueous composition containing the water-insoluble pesticide in the use as a dispersant. In addition, it relates to a copolymer comprising in polymerized form comprising at least 20mol% N- vinylamide, and at least 1mol% vinylimidazole or quaternized vinylimidazole, water-insoluble pesticide and a salt dissolved in the aqueous composition. The present invention further relates to a process for the water-insoluble pesticide, the salt of the copolymer and the composition is prepared by mixing water, the. Another subject is a method of controlling phytopathogenic fungi and / or undesired plant growth and / or undesired insect or mite infestation and plant growth and / or regulation, wherein the composition is applied to a particular pest, its habitat or the plants to be protected from certain pests, soil and / or on undesired plants and / or useful plants and / or their habitat.