Reclamation of noble products in a method for producing (meth)acrylic ester
US10457630B2 · kind B2 · utility
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15Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 28, 2016 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Jan 28, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing a (meth)acrylic ester with improved productivity, by transesterfication of a light alkyl (meth)acrylate with a heavy alcohol. The method of the invention includes the recycling of noble products recovered after the thermal treatment of heavy fractions generated during the synthesis, said thermal treatment being carried out in the presence of a dialkyl phthalate, the alkyl chain of which corresponds to that of the light alkyl (meth)acrylate. The invention applies to the production of N,N-dimethyaminoethyl acrylate from ethyl acrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.