Title:
セルロース誘導体
Document Type and Number:
Japanese Patent JP5039552
Kind Code:
B2
Abstract:
A cellulose derivative which has a suitable elastic modulus and viscosity when it is dissolved in water and is useful as an adhesion barrier. The cellulose derivative has a molecular weight of 5 x 10 3 to 5 x 10 6 and is composed of a repeating unit represented by the following formula (1):
wherein R 1 , R 2 and R 3 are each independently selected from the group consisting of the following formulas (a), (b), (c) and (d) in predetermined amount:
-H(a)
-CH 2 -COOH(b)
-CH 2 -COOX(c)
(X in the formula (c) is an alkali metal, and R 4 and R 5 in the formula (d) are each independently an alkyl group or alkenyl group having 10 to 28 carbon atoms).
Inventors:
Hiroaki Kaneko
Eiichi Kitazono
Masaya Ito
Yoshihiko Sumi
Eiichi Kitazono
Masaya Ito
Yoshihiko Sumi
Application Number:
JP2007529614A
Publication Date:
October 03, 2012
Filing Date:
August 03, 2006
Export Citation:
Assignee:
Teijin Limited
International Classes:
C08B15/06; A61K31/717; A61L31/00; A61P41/00; A61P43/00; C08B11/193
Domestic Patent References:
| JP2004014481A | 2004-01-15 | |||
| JP2002536323A | 2002-10-29 | |||
| JPH0270703A | 1990-03-09 | |||
| JP2005508827A | 2005-04-07 | |||
| JP2004051531A | 2004-02-19 | |||
| JP2003062057A | 2003-03-04 | |||
| JP2004107503A | 2004-04-08 | |||
| JPH09296005A | 1997-11-18 |
Foreign References:
| WO2005000374A1 | 2005-01-06 |
Attorney, Agent or Firm:
Masataka Oshima
Taizo Shiraishi
Hideo Katsumata
Taizo Shiraishi
Hideo Katsumata