发明授权
- 专利标题: Process for the preparation of trimethylolpropane
- 专利标题(中): 三羟甲基丙烷的制备方法
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申请号: US623279申请日: 1984-06-22
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公开(公告)号: US4514578A公开(公告)日: 1985-04-30
- 发明人: Otto Immel , Hans-Helmut Schwarz , Hein Quast , Eberhard Bandtel
- 申请人: Otto Immel , Hans-Helmut Schwarz , Hein Quast , Eberhard Bandtel
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX3207746 19820304
- 主分类号: C07C27/00
- IPC分类号: C07C27/00 ; C07C29/36 ; C07C29/38 ; C07C31/22 ; C07C67/00
摘要:
Trimethylolpropane is prepared in such a manner that butyraldehyde is metered into a mixture of water, alkaline condensing agent and formaldehyde, which contains less than 0.1 mol of methanol relative to 1 mol of formaldehyde, at temperatures from 15.degree. to 50.degree. C., and after addition of the butyraldehyde the reaction mixture is heated up to 90.degree. C., sufficient water being present in the reaction mixture so that the reaction mixture has a content of trimethylolpropane of 5 to 25% by weight after the reaction.
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