Production of N-vinyl lactam-olefin copolymer solution, for use as an emulsifier for lubricants, comprises radical copolymerization in the presence of a carboxylate ester solvent

摘要

Carboxylic acid esters are used as solvents in a method for producing copolymers of N-vinyl-lactams and olefins by radical copolymerization. An Independent claim is also included for polymer solutions containing: (A) N-vinyl-lactam/olefin copolymer(s); and (B) ester(s) of aromatic or aliphatic carboxylic acids with aliphatic and/or aromatic alcohols as solvent.