Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-11-30
2011-11-29
Katakam, Sudhakar (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
Reexamination Certificate
active
08067633
ABSTRACT:
The subject of the invention is a method for the synthesis of (meth)acrylic esters by transesterification in the presence of a catalyst corresponding to the formula [(R′O)3Ti]xR″ in which R′ is a linear or branched alkyl radical having from 2 to 8 carbon atoms which may contain heteroatoms or R′ is a phenyl radical, R′ is a polyfunctional radical, originating from a polyol R′(OH)xcomprising x alcohol functional groups and x is an integer ranging from 2 to 6. The method according to the invention is particularly well suited to the synthesis of dialkylaminoalkyl (meth)acrylates from methyl (meth)acrylate and a dialkylaminoalcohol.
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Deleuze, H. et al., “Polymer-Supported Titanates as Catalyst for Transesterification Reactions”,Polymer, vol. 39, No. 24, 1998.
Lewis, N. et al., “A Highly Efficient Preparation of Methacrylate Esters Using Novel Solid Phase Titamium-Based Transesterification Catalysts”, Synlett,No. Spec.ISS, pp. 957-959, 1999.
Schnurrenberger, P. et al., “Herstellung vn Methylestern durch Umesterung funktionalisierter Substrate mit Titalsaureestern als Katalysatoren”, Helvetica Chimica Acta, vol. 65, Fasc 4, pp. 1197-1201, 1982.
English translation of Schnurrenberger, P. et al., “Synthesis of Methyl Esters by Substrates with Titanic Acid Esters as Catalysts Functionalized by Transesterification,” Helvetica Chimica Acta, vol. 65, Fasc. 4, No. 110, 1197-1201 (1982).
Arkema France
Hild Kimberly R.
Katakam Sudhakar
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