发明授权
US4192959A Process for the preparation of pure 2-hydroxybenzyl alcohol, pure
4-hydroxybenzyl alcohol or a mixture of both hydroxy-benzyl alcohols
失效
制备纯2-羟基苄醇，纯4-羟基苄醇或两种羟基 - 苄醇的混合物的方法
- 专利标题： Process for the preparation of pure 2-hydroxybenzyl alcohol, pure 4-hydroxybenzyl alcohol or a mixture of both hydroxy-benzyl alcohols
- 专利标题（中）： 制备纯2-羟基苄醇，纯4-羟基苄醇或两种羟基 - 苄醇的混合物的方法
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申请号： US915489申请日： 1978-06-14
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公开(公告)号： US4192959A公开(公告)日： 1980-03-11
- 发明人: Kurt Bauer , Alfred Krempel , Reiner Molleken , Karlfried Wedemeyer , Helmut Fiege
- 申请人： Kurt Bauer , Alfred Krempel , Reiner Molleken , Karlfried Wedemeyer , Helmut Fiege
- 申请人地址： DEX Leverkusen
- 专利权人： Haarmann & Reimer
- 当前专利权人： Haarmann & Reimer
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX2729075 19770628
- 主分类号： C07C27/00
- IPC分类号： C07C27/00 ; C07C37/20 ; C07C37/72 ; C07C39/11 ; C07C67/00 ; C07C37/26 ; C07C39/16
摘要：
A process for the preparation of pure 2-hydroxybenzyl alcohol, pure 4-hydroxybenzyl alcohol or a mixture of both hydroxybenzyl alcohols by reacting phenol and formaldehyde in the presence of a basic catalyst and subjecting the resulting reaction mixture to an at least 2-stage countercurrent extraction in a solvent system of water/organic solvent which is water-immiscible or water-miscible only to a limited extent.
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