Title:
メチルセルロースエーテルの製造のための方法
Document Type and Number:
Japanese Patent JP4568830
Kind Code:
B2
Abstract:
A water-soluble methyl cellulose ether, having a flocculation point below 100° C., is manufactured by reacting methyl chloride and a cellulose activated by mercerizing the cellulose with aqueous alkali in the presence of a C2-C3 alkyl chloride as a reaction medium at a temperature from 65° C. to 90° C. and at a pressure from 3 to 15 bar. The weight ratio between the cellulose and the C2-C3 alkyl chloride is normally from 1:1 to 1:5. The use of the reaction medium makes it possible to produce at a low pressure methyl cellulose ether at a good rate.
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Inventors:
Bell Grand, Lars
Johansson, Carl-Axel
Sandberg, Kenneth
Johansson, Carl-Axel
Sandberg, Kenneth
Application Number:
JP2003549397A
Publication Date:
October 27, 2010
Filing Date:
November 26, 2002
Export Citation:
Assignee:
Akzo Nobel N.V.
International Classes:
C08B11/02; C08B11/193
Domestic Patent References:
| JP59207901A | ||||
| JP3146501A | ||||
| JP58076401A | ||||
| JP64085201A | ||||
| JP63208516A | ||||
| JP6157101A | ||||
| JP59159801A | ||||
| JP63066201A | ||||
| JP46001428B1 | ||||
| JP53041356A | ||||
| JP55034229A |
Foreign References:
| WO2000059947A1 | ||||
| US3342805 |
Attorney, Agent or Firm:
Hiroshi Kobayashi
Eiji Katayama
Norio Omori
Yasuhito Suzuki
Eiji Katayama
Norio Omori
Yasuhito Suzuki