Process for the manufacture of dialkylaminoalkyl (meth)acrylates
US4851568A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jul 8, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C213/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the manufacture of dialkylaminoalkyl (meth)acrylates (I) of formula: EQU H.sub.2 C.dbd.C(R.sub.1)-C(O)-O-A-N(R.sub.2)(R.sub.3) R.sub.1 being a hydrogen atom or a methyl radical, A being a linear or branched alkyl radical containing 1 to 5 carbon atoms, and R.sub.2 and R.sub.3, which are identical or different from each other, are an alkyl radical containing 1 to 5 carbon atoms, or an aryl group, or R.sub.2 and R.sub.3 form a cyclic alkyl radical, in which ethyl (meth)acrylate is reacted with an aminoalcohol (II) of formula (R.sub.3)(R.sub.2)N-A-OH, A being a linear or branched alkyl radical containing 1 to 5 carbon atoms, in the presence of a polymerization inhibitor, at a temperature of between 20.degree. and 120.degree. C. and at a pressure equal to or lower than atmospheric pressure, in a molar ratio of ethyl (meth)acrylate to aminoalcohol (II) of between 1.5 and 5, in the presence of tetraethyl titanate, the azeotropic mixture of ethyl (meth)acrylate and ethanol is removed during the reaction, and the dialkylaminoalkyl (meth)acrylate (I) obtained is isolated at the end of reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.