发明名称 |
PROCESS FOR THE MANUFACTURE OF METHYL CELLULOSE ETHER |
摘要 |
A water-soluble methyl cellulose ether, having a flocculation point below 100°C, is manufactured by reacting methyl chloride and a cellulose activated by mercerising 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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申请公布号 |
KR20050044632(A) |
申请公布日期 |
2005.05.12 |
申请号 |
KR20047008394 |
申请日期 |
2002.11.26 |
申请人 |
AKZO NOBEL N.V. |
发明人 |
BERGLUND, LARS;JOHANSSON, KARL AXEL;SUNDBERG, KENNETH |
分类号 |
C08B11/02;C08B11/193;(IPC1-7):C08B11/02 |
主分类号 |
C08B11/02 |
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