Method and plant for the manufacture of carboxylic acid ester by means of a reactive distillation
US7329774B2 · kind B2 · utility
13Cited by
5References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 7, 2006 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Feb 12, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Carboxylic acid ester is produced by esterification of carboxylic acid and an alcohol in a catalytic reaction zone of a first column at a pressure not greater than ambient pressure. The resultant sump product is distilled in a reaction zone of a second column at a pressure greater than 1.5 bar to obtain a second liquid sump product containing carboxylic acid ester with an carboxylic acid content of less than 100 ppm by weight at a lower end of the column. Neutralization of the second liquid sump product with a base is not required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.