US 2006/0079631 A1Published application

Method for preparing water-absorbent polymer composite and accumulated material thereof

AssigneeMitsubishi Chemical Corporation

InventorsShunichi Himori, Kiichi Itoh, Yoshiaki Mori, Yasunari Sugyo, Taisuke Ishii

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Abstract

Disclosed is a method for preparing a water-absorbent polymer composite comprising the steps of contacting said polymerizable monomer with one or more fibers having a contact angle against water of 0 to 60 degrees in a gas phase, and proceeding with the polymerization of said monomers to form the water-absorbent polymer composite. The method can provide a water-absorbent polymer composite characterized in that the fibers are stably fixed to the water-absorbent polymer not only in dry but also in wet through water absorption for swelling, the water-absorbent polymer content can be enlarged relative to the fibers, the polymer can be uniformly fixed to the fibers, the composite is flexible and can be thinned, and it can be opened by itself and can be uniformly mixed with any other material.

Claims16

Dependent claims

A method for preparing a water-absorbent polymer composite comprising a water-absorbent polymer particle and two or more fibers from a polymerizable monomer capable of providing a water-absorbent polymer and said fibers in a reactor,

wherein, in said water-absorbent polymer composite, said polymer particle has a substantially spherical shape, at least one of said two or more fibers is partially wrapped in the polymer particle and partially exposed to outside the particle, and at least one of said two or more fibers is unwrapped in the polymer particle and partially adhered to a surface of the polymer particle,
said method comprises the steps of contacting said polymerizable monomer with one or more fibers having a contact angle against water of 0 to 60 degrees in a gas phase, and proceeding with the polymerization of said monomers to form the water-absorbent polymer composite.

Dependencies are inferred from the claim text.