| 发明名称 |
PROCESS FOR PREPARATION OF 3-METHOXY-4-HYDROXYBENZALDEHYDE |
| 摘要 |
<p>Process for the production of 3-methoxy-4-hydroxy-benzaldehyde (vanillin) by air oxidation of a strongly alkaline lignin containing sulphite waste liquor in which the lignin content of the waste liquor is enriched by ultra-filtratlon for the purpose of inhibiting crusting of inorganic matter in the extraction system.</p> |
| 申请公布号 |
CA1071235(A) |
申请公布日期 |
1980.02.05 |
| 申请号 |
CA19760244893 |
申请日期 |
1976.02.03 |
| 申请人 |
BORREGAARD INDUSTRIES LIMITED |
发明人 |
EVJU, HANS |
| 分类号 |
C07C47/58;C07C;C07C45/00;C07C47/56;C07C67/00;(IPC1-7):07C47/58 |
主分类号 |
C07C47/58 |
| 代理机构 |
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代理人 |
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