| 发明名称 |
FOERFARANDE FOER ISOLERING OCH RENING AV VANILLIN. |
| 摘要 |
<p>The invention relates to a method for the production of vanillin in the form of a very pure product by oxidizing lignin contained in the wood pulping liquor. According to the invention the separation and purification of vanillin from the reaction mixture is carried out by means of an extraction at a supercritical pressure and temperature. Carbon dioxide, for instance, can be used as a extraction gas.</p> |
| 申请公布号 |
FI850858(A0) |
申请公布日期 |
1985.03.01 |
| 申请号 |
FI19850000858 |
申请日期 |
1985.03.01 |
| 申请人 |
YHTYNEET PAPERITEHTAAT OY |
发明人 |
KLEMOLA, AARNO;TUOVINEN, JUHA |
| 分类号 |
C07C47/58;C07C45/00;C07C45/78;C07C45/80;C07C45/81;C07C67/00;(IPC1-7):C07C/ |
主分类号 |
C07C47/58 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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