C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 305/12 (2006.01) C07C 45/89 (2006.01) C07C 49/88 (2006.01) C07D 315/00 (2006.01)
Patent
CA 2116078
Production of ketene dimers from fatty acid halides by reaction with tertiary amines whereby the tertiary amine is used both as a reactant and as a solvent/diluent. In the process at least 1.15 moles of tertiary amine is used per mole of fatty acid halide and the process is carried out in the substantial absence of an additional solvent, whereby the produced ketene dimer is obtained by stripping of the tertiary amine followed by separation of formed crystals of tertiary amine hydrogen halide by acid extraction.
Production de dimères de cétènes à partir d'halogénures d'acides gras, par réaction avec des amines tertiaires utilisées à la fois comme réactif et comme solvant/diluant. On utilise au moins 1,15 mole d'amine tertiaire par mole d'halogénure d'acide gras lors de ce procédé, qui se déroule en l'absence presque totale d'un solvant additionnel. Le dimère de cétène est obtenu grâce à une réaction de stripping de l'amine tertiaire, puis à la séparation, par extraction acide, des cristaux d'hydrohalogénure d'amine tertiaire formés.
Eka Nobel Ab
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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