发明名称 HIGHLY WATER-ABSORBING RESIN AND PRODUCTION THEREOF
摘要 PURPOSE:To obtain the titled substance having improved absorption of a salt- containing aqueous solution, and the water-absorption after heat-treatment, by graft-polymerizing acrylonitrile to decomposed starch in the presence of a specific monomer, and saponifying the copolymer containing a specific amount of said monomer with an alkali. CONSTITUTION:The objective substance can be produced by (1) copolymerizing (A) acrylonitrile to (B) decomposed starch (e.g. cyclodextrin, etc. preferably having a polymerization degree of 6-800) using cerric ammonium nitrate as a catalyst, in the presence of a monomer of formula (X is H or methyl; Y is acetoxyl or alkoxycarbonyl) (preferably methyl methacrylate, etc.) to obtain a copolymer containing <=15mol% said monomer based on the sum of acrylonitrile and said monomer, and (2) saponifying the obtained copolymer with an alkali. USE:Paper diaper, wet napkin, etc.
申请公布号 JPS61185517(A) 申请公布日期 1986.08.19
申请号 JP19850024765 申请日期 1985.02.12
申请人 NIPPON SHOKUHIN KAKO KK 发明人 YAMAGUCHI MAGOICHI
分类号 C08F251/00;A61F13/49;A61F13/53;B01J20/26 主分类号 C08F251/00
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