Method for producing α-hydroxycarboxylic acid ester
US8759566B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 30, 2010 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Jul 26, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a process for producing α-hydroxycarboxylic esters from α-hydroxycarboxylic amides and aliphatic alcohols, wherein it is a production process which is inhibited in a production cost and enhanced in a conversion rate and a selectivity and which is industrially advantageous. To be specific, it is a production process for α-hydroxycarboxylic ester characterized by subjecting α-hydroxycarboxylic amide and aliphatic alcohol to a gas phase reaction in the presence of a zirconium dioxide catalyst. A catalyst lifetime is improved to a large extent by using a zirconium dioxide catalyst containing a specific element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.