WATER SWELLABLE AND WATER SOLUBLE POLYMERS AND USE THEREOF

摘要

The present invention provides a polymer comprising units according to formula III wherein R1 is selected from C1 to C10 alkylene and C5 to C20 arylene; each R2 is selected independently from H and C1 to C10 alkyl; and R3 and R4 are selected independently from H and C1 to C30 alkyl. Embodiments of the invention provide polymers that are water soluble or water swellable and can form transparent and flexible films.