Title:
WATER-ABSORBENT RESIN AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3580932
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a water-absorbent resin which contains a saccharide residue, is excellent in both water absorbency and biodegradability, simplifies waste disposal and is also excellent in safety by polymerizing a monomer composition containing a specified acrylic acid derivative.
SOLUTION: An acrylic acid derivative of formula I (wherein R1 is H or an organic residue; R2 is H, a counter ion or an organic residue; and G is a saccharide residue) is copolymerized with an acrylic acid monomer in the presence of a crosslinking agent to give a water-absorbent resin comprising a crosslinked polymer containing structural units of formula II. The acrylic acid derivative of formula I can be easily produced by reacting an acrylic ester represented by formula III (e.g. methyl α-(hydroxymethyl)acrylate) with a saccharide having a hemiacetal hydroxyl group (e.g. glucose) and/or an alkyl glycoside in the presence of an acid catalyst. The obtained resin can be utilized for paper diaper, sanitary goods, an oil-water separating material, a vibration-proofing material, household sundries, etc.
Inventors:
Koichi Yonemura
Keiji Manki
Koichi Nakagawa
Nobuyuki Harada
Keiji Manki
Koichi Nakagawa
Nobuyuki Harada
Application Number:
JP2277596A
Publication Date:
October 27, 2004
Filing Date:
February 08, 1996
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C07H15/00; C08F20/26; C08L101/16; (IPC1-7): C08F20/26; C07H15/00
Domestic Patent References:
| JP8325303A | ||||
| JP4120112A | ||||
| JP9188693A | ||||
| JP9188691A | ||||
| JP59145036A | ||||
| JP4055411A | ||||
| JP55090507A | ||||
| JP63235315A |
Attorney, Agent or Firm:
Kenzo Hara