Title:
ゲルに類似の流動学的性質を有するセルロースエーテルおよびその製造方法
Document Type and Number:
Japanese Patent JP4970703
Kind Code:
B2
Abstract:
Cellulose ethers with gel-like rheological properties in aqueous solution are produced by irreversibly crosslinking the cellulose ether obtained by reacting alkalized cellulose with alkylene oxide and alkyl halide. Cellulose ethers with gel-like rheological properties in aqueous solution (I), obtained by: (a) alkalizing cellulose with aqueous alkali hydroxide solution (II) in presence of a suspending agent (III); (b) reacting with alkylene oxide(s), reacting with an alkyl halide contained in (III); (c) reacting (subsequently or simultaneously) with 0.0001-0.05 equivalents (eq.) crosslinking agent (i.e. moles per mol anhydroglucose units (AGU)); and (d) separating the irreversibly crosslinked derivative from the reaction mixture (optionally after further addition of (II) and/or alkylating agent), optionally purifying and then drying the product.. An Independent claim is also included for a method as described above for the production of (I).
Inventors:
Hardwig Schlesinger
Arne Henning Kuru
Eric-Andreas Crower
Arne Henning Kuru
Eric-Andreas Crower
Application Number:
JP2003201870A
Publication Date:
July 11, 2012
Filing Date:
July 25, 2003
Export Citation:
Assignee:
Dow Global Technologies Inc.
International Classes:
C08B11/08; C08B15/10; C08B1/02; C08B11/00; C08B11/02; C08B11/193; C08B11/20; C08B15/00
Domestic Patent References:
| JP50080376A | ||||
| JP2002201201A | ||||
| JP59207901A | ||||
| JP61034001A | ||||
| JP8183801A | ||||
| JP8183802A | ||||
| JP10330401A | ||||
| JP11012304A | ||||
| JP2000063565A |
Foreign References:
| US4321367 | ||||
| US2148952 |
Attorney, Agent or Firm:
Takuya Kuno
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard