C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 31/20 (2006.01) C07C 29/38 (2006.01)
Patent
CA 2143304
The invention relates to a novel process for the preparation of 2-n-butyl-2-ethyl-1,3-propane diol from 2-ethyl hexanal and formaldehyde by using a basic alkali metal hydroxide or earth alkali metal hydroxide catalyst. In the process according to the invention, cationic or neutral phase transfer catalysts are additionally used for promoting the reaction. The correct choice of the sources of the initial material ccomponents is also essential. 2-n-butyl-2-ethyl-1,3-propane diol is used, for example, in the paint industry in the preparation of pulverous paints.
L'invention se rapporte à un nouveau procédé de préparation de 2-n-butyl-2-éthyl-1,3-propane diol à partir de 2-éthyl hexanal et de formaldéhyde et au moyen d'un catalyseur à hydroxyde de métal alcalin basique ou à hydroxyde de métal alcalino-terreux. Selon ce procédé, des catalyseurs de transfert de phase neutres ou cationiques supplémentaires sont utilisés pour favoriser la réaction. Le choix approprié des sources des constituants initiaux est également essentiel. 2-n-butyl-2-éthyl-1,3-propane diol est utilisé, notamment, dans l'industrie de la fabrication de peinture pour préparer des peintures pulvérulentes.
Ankner Kjell
Kulmala Kari
Rintala Lea
Fetherstonhaugh & Co.
Neste Oy
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