Reductive alkylation of amine to make tertiary amino polyol...

C - Chemistry – Metallurgy – 07 – C

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C07C 215/10 (2006.01) C07C 213/04 (2006.01) C07C 213/08 (2006.01)

Patent

CA 2165769

The present invention describes an alternative reaction path for the making of quaternary ammonium esters for fabric softening. The process starts from a chloroepoxide which is reacted with ammonia and water to form a primary amino polyol. The process continues as reductive alkylation of the primary and then secondary amine with aldehydes to provide an intermediate tertiary amino polyol. The first part of the process is followed by the traditional esterification and quaternisation steps known in the art for making quaternized ammonium fabric softening compounds.

La présente invention décrit une nouvelle voie de synthèse pour la fabrication d'esters à fonction ammonium quaternaire utilisés comme adoucissants de tissus. Le produit de départ est un chloroépoxyde que l'on fait réagir avec de l'ammoniaque et de l'eau pour former un polyol à fonction amine primaire. Le procédé continue par une alkylation réductrice de l'amine primaire et puis secondaire avec des aldéhydes pour produire un intermédiaire, qui est un polyol à fonction amine tertiaire. Cette partie du procédé est suivie par une estérification et la formation d'un ammonium quaternaire par des procédés traditionnels, qui sont connus dans l'art de la fabrication des adoucissants pour tissus.

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