PROCESS FOR PREPARATION OF WATER ABSORPTIVE COMPOSITE MATERIAL

摘要

Aqueous solution of alkali or ammonium acrylate is applied to a prefabricated fibrous substrate, and the acrylate is subjected to polymerization in two steps, namely the first step in which the acrylate is polymerized by means of a radical polymerization initiator and the second step which is subsequent to the first step and in which the unpolymerized acrylate is polymerized by means of irradiation with electromagnetic radiation or corpuscular ionizing radiation. The process of the invention provides water absorptive composite materials.