发明名称 |
Production of syringealdehyde from hardwood waste pulping liquors |
摘要 |
Syringealdehyde and vanillin are produced from alkaline or neutral sulphite waste liquors by alkaline oxidative treatment of the liquor and subsequent isolation of a mixture of the aldehydes. Syringealdehyde is separated from vanillin by fractional distillation.
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申请公布号 |
US4075248(A) |
申请公布日期 |
1978.02.21 |
申请号 |
US19760720628 |
申请日期 |
1976.09.07 |
申请人 |
DOMTAR LIMITED |
发明人 |
MARSHALL, HARRY BORDEN;VINCENT, DONALD L. |
分类号 |
C07C45/32;(IPC1-7):C07C45/00 |
主分类号 |
C07C45/32 |
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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