Title:
WATER-ABSORBING AND LIQUID-ABSORBING POLYMER
Document Type and Number:
WIPO Patent Application WO/2012/147255
Kind Code:
A1
Abstract:
[Problem] To provide an environmentally friendly and novel liquid-absorbing polymer that can be used as a material in place of a cross-linked polyacrylic acid copolymer, makes use of a natural product, and has an absorbency superior to conventional products with respect to solutions containing metal cations and fluids containing proteins. [Solution] This invention provides a water-absorbing and liquid-absorbing polymer with which it is possible to absorb solutions containing metal cations and fluids containing proteins, said polymer being obtained by cross-linking carboxymethyl cellulose salt, having a substitution degree of 0.65-1.4 and a weight-average molecular weight of 84,600-125,000, with an epoxy compound. For example, epichlorohydrin or ethylene glycol diglycidyl ether may be used as the epoxy compound. The present invention resolves problems such as waste disposal, while providing a water-absorbing and liquid-absorbing polymer with excellent practical utility.
Inventors:
KONO HIROYUKI (JP)
Application Number:
PCT/JP2012/001342
Publication Date:
November 01, 2012
Filing Date:
February 28, 2012
Export Citation:
Assignee:
INST NAT COLLEGES TECH JAPAN (JP)
KONO HIROYUKI (JP)
KONO HIROYUKI (JP)
International Classes:
C08B15/10; C08B11/12
Foreign References:
| JP2004137382A | 2004-05-13 | |||
| JPH06172401A | 1994-06-21 | |||
| JPH08243388A | 1996-09-24 |
Other References:
XIAO, Y. ET AL., JAPAN TAPPI JOURNAL, vol. 56, no. 8, 1 August 2002 (2002-08-01), pages 1191 - 1196
Attorney, Agent or Firm:
MIZUNO, Katsufumi et al. (JP)
Katsufumi Mizuno (JP)
Katsufumi Mizuno (JP)
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Claims: