C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
C12P 7/42 (2006.01) C08G 63/06 (2006.01) C08G 63/85 (2006.01)
Patent
CA 2416434
This invention relates to a process for the preparation of a 3- hydroxycarboxylic acid from a 3-hydroxynitrile. More specifically, 3- hydroxyvaleronitrile is converted to 3-hydroxyvaleric acid in high yield at up to 100% conversion, using as an enzyme catalyst 1) nitrile hydratase activity and amidase activity or 2) nitrilase activity of a microbial cell. 3- Hydroxyvaleric acid is used as a substitute for e-caprolactone in the preparation of highly branched copolyester.
L'invention concerne un procédé destiné à la préparation d'un acide 3-hydroxycarboxylique à partir d'un 3-hydroxynitrile. Plus particulièrement, du 3-hydroxyvaléronitrile est converti en acide 3-hydroxyvalérique avec un rendement élevé dans une proportion pouvant atteindre 100 %. Pour ce faire, on utilise (1) l'activité nitrile hydratase et l'activité amidase ou (2) l'activité nitrilase d'une cellule microbienne comme catalyseur enzymatique. L'acide 3-hydroxyvalérique est utilisé comme substitut pour l'.epsilon.-caprolactone dans la préparation d'un copolyester hautement ramifié.
Bramucci Michael G.
Dicosimo Robert
Fallon Robert D.
Gavagan John E.
Herkes Frank
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
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