A process for the preparation of a slightly crosslinked, by means of water swellable hydrogel polymer strip or a hydrogel polymer fiber

摘要

Method for the production of water swellable, lightly crosslinked, hydrogel polymer tapes or fibers comprises extruding an isocyanato terminated prepolymer of a poly(alkyleneoxy) polyol and an organic diisocyanate into a coagulant or crosslinking bath containing water or organic polyamine as the crosslinker.