Method for producing (meth)acrylic acid and (meth)acrylic esters
US7981255B2 · kind B2 · utility
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5References
8Claims
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Key dates
| Filing date | Sep 26, 2007 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Jan 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a method for rectifying a vinyl compound liquor. The method includes the steps of a) providing a rectification column operated at a temperature and pressure and b) feeding the vinyl compound liquor to be rectified into the rectification column, wherein the pressure of the rectification column and the temperature of the fed vinyl compound liquor are controlled, such that the temperature of the fed vinyl compound liquor ranges from its bubble point at the pressure of the rectification column to 10° C. lower than the bubble point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.