Manufacture of insoluble and only sparingly swellable poly-N- vinylpyrrolidone-2 or copolymers of N-vinylpyrrolidone with other N- vinyllactams

摘要

Manufacture of insoluble poly-N-vinyl-pyrrolidone-2 or copolymers of N- vinylpyrrolidone-2 in the presence of a difunctional crosslinker by heating the reaction solution at temperatures above 80 C and completing the reaction at the boiling temperature of water.