Esterification catalysts

B - Operations – Transporting – 01 – J

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Details

B01J 31/12 (2006.01) B01J 31/02 (2006.01) B01J 31/14 (2006.01) C07C 67/08 (2006.01) C07C 69/24 (2006.01) C07C 69/54 (2006.01) C07C 69/58 (2006.01) C07C 69/76 (2006.01) C07F 9/09 (2006.01) C07F 9/28 (2006.01) C08G 63/82 (2006.01) C08G 63/84 (2006.01) C08G 63/85 (2006.01)

Patent

CA 2309697

An organometallic compound suitable for use as a catalyst for the preparation of an ester comprises the reaction product of an orthoester or condensed orthoester of titanium, zirconium or aluminium, an alcohol containing at least two hydroxyl groups, an organophosphorus compound containing at least one P-OH group and a base. A process for the preparation of an ester comprises carrying out an esterification reaction in the presence of the catalyst. In a further embodiment the organometallic compound suitable for use as a catalyst in an esterification process comprises the reaction product of, in addition, a 2- hydroxy carboxylic acid.

L'invention concerne un composé organométallique pouvant être utilisé comme catalyseur en vue de la préparation d'un ester. Ledit composé comprend le produit réactionnel d'un orthoester ou d'un orthoester condensé de titane, de zirconium, ou d'aluminium, d'un alcool renfermant au moins deux groupes hydroxyle, d'un composé organophosphoré renfermant au moins un groupe P-OH et d'une base. Un procédé de préparation d'un ester consiste à produire une réaction d'estérification en présence d'un catalyseur. Selon un autre mode de réalisation, le composé organométallique pouvant être utilisé comme catalyseur dans un procédé d'estérification comprend, en outre, le produit réactionnel d'acide carboxylique 2-hydroxy.

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