N-Vinyleinheiten enthaltende Pfropfpolymerisate, Verfahren zu ihrer Herstellung und ihre Verwendung

摘要

Graft polymers containing N-vinyl units in which the graft base is a polymer which contains at least 5 wt % units of formulae (I), (II) in which R<1>, R<2> = H or C1 to C6 alkyl, monoethylenically unsaturated monomers are grafted on the graft base in the ratio by weight of 100 : 1 to 1: 100 and the graft polymers have K values of at least 7 (determined according to H. Fikentscher in 5 wt % aqueous solution at 25 DEG C and pH 7), process for producing graft polymers containing N-vinyl units by the polymerisation of monoethylenically unsaturated monomers in the presence of polymers containing at least 5 wt % units of formula (I) and/or (II) as the graft base in the ratio by weight of 100 : 1 to 1 : 100 and use of the graft polymers as dispersants for pigments, additives in washing and cleaning agents, compacting agents for paper, and floor and fertiliser compacting agents.