Title:
【発明の名称】速い膨潤性、機械的高強度及び超吸収性を有するヒドロゲル複合体及び超多孔質ヒドロゲル複合体
Document Type and Number:
Japanese Patent JP2002501563
Kind Code:
A
Abstract:
A superporous hydrogel composite is formed by polymerizing one or more ethylenically-unsaturated monomers, and a multiolefinic crosslinking agent, in the presence of particles of a disintegrant and a blowing agent. The disintegrant, which rapidly absorbs water, serves to greatly increase the mechanical strength of the superporous hydrogel and significantly shorten the time required to absorb water and swell. Superporous hydrogel composites prepared by this method have an average pore size in the range of 10 mum to 3,000 mum. Preferred particles of disintegrant include natural and synthetic charged polymers, such as crosslinked sodium carboxymethylcellulose, crosslinked sodium starch glycolate, and crosslinked polyvinylpyrrolidone. The blowing agent is preferably a compound that releases gas bubbles upon acidification, such as NaHCO3. Improved hydrogel composites formed without a blowing agent are also provided.
Inventors:
Park, Kinham
Chen, Jun
Park, haenson
Chen, Jun
Park, haenson
Application Number:
JP54896898A
Publication Date:
January 15, 2002
Filing Date:
May 08, 1998
Export Citation:
Assignee:
Purdue Research Foundation
International Classes:
A61F13/53; A61K31/765; A61K47/32; A61L15/60; A61L27/00; A61P3/04; B01J20/26; B01J20/28; C08F2/44; C08F251/00; C08F291/00; C08L101/00; (IPC1-7): C08L101/00; A61F13/53; A61L15/60; B01J20/26; C08F2/44
Attorney, Agent or Firm:
Akira Asamura (3 outside)