TEMPERATURE-SENSITIVE FINE PARTICLE GEL DISPERSION LIQUID HAVING HIGH CONCENTRATION AND HIGH SEPARATION STABILITY AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a temperature-sensitive fine particle gel dispersion liquid having high concentration and high separation stability in water and a method for producing the same without using a surfactant and an organic solvent, because although there are conventionally a method of dissolving in a solvent and polymerizing or a method of emulsion polymerizing to produce a temperature-sensitive fine particle gel dispersion, neither achieves enhancement of separation stability and concentration.;SOLUTION: In the method for producing the temperature-sensitive fine particle gel dispersion liquid, the temperature-sensitive fine particle gel dispersion liquid is obtained under the conditions that essentially, not less than 30 mol% of a specific nonionic monomer is included and homopolymerization or copolymerization is performed in the presence of a crosslinking agent and a water-soluble polymer in water.;COPYRIGHT: (C)2012,JPO&INPIT