Title:
CELLULOSE DERIVATIVE AND HYDROGEL THEREOF
Document Type and Number:
WIPO Patent Application WO/2009/078492
Kind Code:
A1
Abstract:
Disclosed is a cellulose derivative which is obtained by substituting a part of a plurality of carboxyl groups in a carboxymethyl cellulose, which is a cellulose derivative, with -CO-NH-X-CO-Y-Z. Also disclosed is a hydrogel of the thus-obtained cellulose derivative. In this connection, X represents a divalent hydrocarbon group having 1-10 carbon atoms; Y represents a divalent group derived from a polyalkylene oxide, which has an oxygen atom at both ends; Z represents a hydrocarbon group having 1-24 carbon atoms or -CO-R4; and R4 represents a hydrocarbon group having 1-23 carbon atoms. The hydrogel has excellent viscoelasticity, and can be injected into a desired region with an injection device such as a syringe. Consequently, the hydrogel can be used as a medical gel or an anti-adhesive material.
Inventors:
KANEKO HIROAKI (JP)
ENDO NOBUYUKI (JP)
ITO MASAYA (JP)
ENDO NOBUYUKI (JP)
ITO MASAYA (JP)
Application Number:
PCT/JP2008/073500
Publication Date:
June 25, 2009
Filing Date:
December 17, 2008
Export Citation:
Assignee:
TEIJIN LTD (JP)
KANEKO HIROAKI (JP)
ENDO NOBUYUKI (JP)
ITO MASAYA (JP)
KANEKO HIROAKI (JP)
ENDO NOBUYUKI (JP)
ITO MASAYA (JP)
International Classes:
C08B11/12; A61L31/04
Domestic Patent References:
| WO2001046265A1 | 2001-06-28 | |||
| WO1989010940A1 | 1989-11-16 |
Foreign References:
| JP2007002063A | 2007-01-11 | |||
| JPS62112604A | 1987-05-23 | |||
| JP2000051343A | 2000-02-22 |
Other References:
See also references of EP 2236522A4
BUCKENMAIER CC 3RD; PUSATERI AE; HARRIS RA; HETZ SP, AM SURG., vol. 65, no. 3, 1999, pages 274 - 82
BUCKENMAIER CC 3RD; PUSATERI AE; HARRIS RA; HETZ SP, AM SURG., vol. 65, no. 3, 1999, pages 274 - 82
Attorney, Agent or Firm:
MIHARA, Hideko (Limited 2-1, Kasumigaseki 3-chom, Chiyoda-ku Tokyo 13, JP)
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