| Original document(12 pages) 中文版 |
1,3 butylene glycol, prepared through an intermediate aldol condensation reaction of acetaldehyde, is produced at increased yield efficiencies. The efficiencies are achieved by utilizing an acetaldehyde having low carboxylic concentrations. The aldol condensation takes place in the presence of an alkali agent at a concentration of about 2 ppm to about 10 ppm to produce a 3-hydroxybutanal intermediate product that is hydrogenated in the presence of a Raney nickel catalyst to yield 1,3 butylene glycol at efficiency yields of greater than about 75%. |
Application Number
申请号 |
200580002060 |
Application Date
申请日 |
2005.01.03 |
| Title 名称 |
Methods for preparing 1,3-butylene glycol |
Publication Number
公开号 |
1910125 |
Publication Date
公开日 |
2007.02.07 |
| Approval Pub. Date |
|
Granted Pub. Date |
|
| International Classification 分类号 |
C07C29/141 |
Applicant(s) Name
申请人 |
Celanese Int Corp. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Windhorst Kenneth Allen;Guajardo Richard D. |
| Attorney & Agent 代理人 |
lin bainan liu jinhui |
| More information 更 多 信 息 |
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