Patent ID: 6667372
Filing Date: 2003-12-23
Classification: B29B,C08F,Y10S

Abstract:
A continuous manufacturing method of a water-absorbent polymer by continuously performing a polymerization of a hydrophilic monomer using a solution containing a hydrophilic monomer, comprising at least one of the following steps (A) to (D):(A) introducing an inert gas into said solution in a continuous manner before subjecting said solution to a polymerization reaction, and subsequently removing the inert gas from said solution; (B) supplying said solution to a polymerization process, and washing out said solution with water supplied before, at, or after a timing of supplying said solution to the polymerization process; (C) detecting reaction temperatures of a polymerization reaction in non-contact manner at a plurality of points different distances away from a point from which said solution is supplied; and (D) supplying water to a water-containing gel and/or transport means when transporting the water-containing gel of the water-absorbent polymer obtained in or after the polymerization reaction.