C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
C12P 7/40 (2006.01)
Patent
CA 2475358
The invention provides a process for the hydrolysis of acrylonitrile to acrylic acid, and for the hydrolysis of methacrylonitrile to methacrylic acid, in high yield and at high concentration with high specificity. Acrylonitrile or methacrylonitrile is hydrolyzed in a suitable aqueous reaction mixture by a catalyst characterized by a nitrile hydratase and amidase activity of Comamonas testosteroni 5-MGAM-4D, producing the corresponding acid. The acrylic acid or methacrylic acid is isolated as the acid or corresponding salt.
L'invention concerne un procédé pour l'hydrolyse d'un acrylonitrile en un acide acrylique, et pour l'hydrolyse d'un méthacrylonitrile en un acide méthacrylique, à haut rendement et à forte concentration avec une spécificité élevée. L'acrylonitrile ou le méthacrylonitrile est hydrolysé dans un mélange réactionnel aqueux adapté à l'aide d'un catalyseur caractérisé par une activité nitrile hydratase et amidase de Comamonas testosteroni 5-MGAM-4D, produisant l'acide correspondant. L'acide acrylique ou l'acide méthacrylique est ensuite isolé sous forme d'acide ou de sel correspondant.
Dicosimo Robert
Fall0n Robert D.
Gavagan John E.
Manzer Leo E.
Bennett Jones Llp
E. I. Du Pont de Nemours And Company
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