Invention Application
- Patent Title: Process for dehydrating 2-methylpentane-2,4-diol
- Patent Title (中): 脱水2-甲基戊烷-2,4-二醇的方法
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Application No.: US11184136Application Date: 2005-07-19
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Publication No.: US20060058561A1Publication Date: 2006-03-16
- Inventor: Helmut Springer
- Applicant: Helmut Springer
- Assignee: Celanese Chemicals Europe GmbH
- Current Assignee: Celanese Chemicals Europe GmbH
- Priority: DE102004043940.0 20040911
- Main IPC: C07C1/00
- IPC: C07C1/00
Abstract:
A process for dehydrating 2-methylpentanediol-2,4 to a mixture of 2-methyl-1,3-pentadiene and 4-methyl-1,3-pentadiene at elevated temperature in the presence of an acid catalyst using a polyglycol ether as a heat carrier, wherein a polyglycol ether containing from 80 to 100% by weight of a polyethylene glycol dimethyl ether of the formula CH3(OCH2CH2)nOCH3 where n=2-8 and from 0 to 20% by weight of a polyethylene glycol monomethyl ether of the formula CH3(OCH2CH2)nOH where n=2-8 based in each case on the total mass of polyglycol ether, is used.
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