发明授权
- 专利标题: Process for the production of hydroxybenzyl alcohols
- 专利标题(中): 制备羟基苄醇的方法
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申请号: US940698申请日: 1978-09-08
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公开(公告)号: US4205188A公开(公告)日: 1980-05-27
- 发明人: Wayne C. Muench , Thad S. Hormel , Pamela M. Kirchhoff , Lanny A. Robbins
- 申请人: Wayne C. Muench , Thad S. Hormel , Pamela M. Kirchhoff , Lanny A. Robbins
- 申请人地址: MI Midland
- 专利权人: The Dow Chemical Company
- 当前专利权人: The Dow Chemical Company
- 当前专利权人地址: MI Midland
- 主分类号: C07C37/72
- IPC分类号: C07C37/72 ; C07C39/11 ; C07C37/24
摘要:
A process is provided for the production of hydroxybenzyl alcohols, comprising condensing phenol with formaldehyde in an alkaline solution to form a mixture of ortho- and para-hydroxymethyl phenols, and solvent extracting unreacted phenol from the resulting alkaline hydroxybenzyl alcohol condensate solution. The phenol-reduced hydroxybenzyl alcohol condensate solution is particularly suited for treatment with excess caustic and subsequent oxidation of the resulting aqueous solution of ortho- and para-hydroxybenzyl alcohols-sodium salt to yield the corresponding ortho- and para-hydroxybenzaldehydes-sodium salt.
公开/授权文献
- US5901944A Composite valve seal 公开/授权日:1999-05-11
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