Process for the preparation of (meth)acrylic esters and derivatives
US9145371B2 · kind B2 · utility
0Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2014 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Jun 11, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Transesterification processes for producing a compound of formula (I)wherein R1 is H or a methyl group, A and B are each, independently, a linear or branched C2-C5 alkylene group, comprising reacting: an acrylate or methacrylate of formula (II)wherein R1 is H or a methyl group and R2 is a C1-C4 alkyl group, with a compound of formula (III)wherein the reaction is performed: (i) in the presence of calcium oxide and calcium hydroxide, and (ii) wherein the molar ratio of the compounds of formula (II) to formula (III) is less than 4:1 or 3:1 respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.