Method for producing 2-dimethylaminoethyl (meth)acrylate
US12091480B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Apr 12, 2018 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Dec 7, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the production of 2-dimethylaminoethyl (meth)acrylate in multiple stage batch reactions involving the recycling of the catalyst (DBTO) in subsequent reaction, the addition a certain amount of fresh catalyst to the recycled catalyst, the use of said catalysts in the subsequent reaction, and wherein the volume decrease due to azeotropic distillation is compensate in order to keep the volume constant in the reactor during the reaction by the continuous addition of a composition comprising methyl(meth)acrylate and dimethylaminoethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.