发明名称 |
METHOD FOR PRODUCING HYDROXY PIVALIN ALDEHYDE AND NEOPENTYL GLYCOL |
摘要 |
The preparation of hydroxypivalaldehyde is effected by aldolizing isobutyraldehyde with formaldehyde and subsequently working up the resulting reaction effluent by distillation, wherein the reaction effluent is fed to a distillation column which is operated at a top pressure in the range from 0.5 to 1.5 bar and in which a two-stage condensation is provided in the top region, in which the vapors are first conducted into a partial condenser operated at a temperature in the range from 50 to 80° C., whose condensate is recycled at least partly into the distillation column, and in which the vapors uncondensed in the partial condenser are fed to a downstream condenser operated at a temperature in the range from−40 to +30° C., whose condensate is at least partly discharged. |
申请公布号 |
EP2134669(A1) |
申请公布日期 |
2009.12.23 |
申请号 |
EP20080709204 |
申请日期 |
2008.02.25 |
申请人 |
BASF SE |
发明人 |
SIRCH, TILMAN;STEININGER, MICHAEL;MAAS, STEFFEN;RITTINGER, STEFAN;SCHLITTER, STEPHAN |
分类号 |
C07C29/141;C07C45/75;C07C45/82;C07C47/19 |
主分类号 |
C07C29/141 |
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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