FOERFARANDE FOER FRAMSTAELLNING AV VATTENLOESLIGA AKRYLHOMO- ELLER KOPOLYMERER MED HOEG MOLEKYLVIKT OCH EN RINGA HALT RESTMONOMER ELLER -MONOMERER

摘要

High molecular weight water-soluble polymers essentially devoid of residual monomer content and well adapted for use as flocculating agents, are prepared by photopolymerizing a thin layer of a deoxygenated aqueous solution of an olefinically unsaturated monomer continuously deposited upon a travelling support substrate, said aqueous solution containing a photopolymerization photoinitiator and said photoinitiator comprising benzil dimethylacetal.