Preparation of alkyl ketene dimers

Details Preparation of alkyl ketene dimers Preparation of alkyl ketene dimers

C - Chemistry, Metallurgy

07

C

C07C 45/89 (2006.01) C07C 49/88 (2006.01) C07D 305/12 (2006.01)

Patent

CA 2636083

The embodiments of the process of the present invention relate to the preparation of alkyl ketene dimers (AKD), where the process combines at least one polyamine with a fatty acid chloride in a molar ratio of less than one mole of polyamine to one mole of fatty acid chloride thereby forming an alkyl ketene dimer/amine salt that is subsequently separated into an organic dimer layer and an aqueous salt layer.

La présente invention concerne un procédé de fabrication de dimères d'alkyle cétène (AKD), ledit procédé combinant au moins une polyamine avec un chlorure d'acide gras en un rapport molaire inférieur à une mole de polyamine pour une mole de chlorure d'acide gras, formant ainsi un dimère d~alkyle cétène/sel d~amine qui est par la suite séparé en une couche de dimère organique et une couche de sel aqueuse.

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