Method for producing α,β-unsaturated carboxylic acid ester, α,β-unsaturated carboxylic acid ester, and lubricating oil additive
US7557241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2007 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Feb 22, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2020/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for producing an α,β-unsaturated carboxylic acid ester is provided in which an alcohol (A) is caused to react with an α,β-unsaturated carboxylic acid or a lower alkyl ester (B) of the α,β-unsaturated carboxylic acid in the presence of a sulfonic acid group-carrying inorganic porous material (α), and an α,β-unsaturated carboxylic acid ester obtained by the above-described method is provided that contains not more than 50 ppm of sulfur atoms based on a weight of the α,β-unsaturated carboxylic acid ester, not more than 2 mol % of by-product etherification products and not more than 1 mol % of by-product addition products based on the mole number of the α,β-unsaturated carboxylic acid ester. Such methods are a method for producing an α,β-unsaturated carboxylic acid ester that does not involve generation of a large amount of waste products and a method for producing a high-purity α,β-unsaturated carboxylic acid ester that causes only a smaller amount of by-products to be generated, and a high-purity α,β-unsaturated carboxylic acid ester is provided that contains only a smaller amount of catalyst residues and exhibits less metal corrosion behavior.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.