Bis(diaminopolyalkoxy)-n-aklylamines by amination of...

Details Bis(diaminopolyalkoxy)-n-aklylamines by amination of... Bis(diaminopolyalkoxy)-n-aklylamines by amination of...

C - Chemistry, Metallurgy

07

C

260/607.2

C07C 217/42 (2006.01)

Patent

CA 1314565

BIS(DIAMINOPOLYALKOXY)-N-ALKYLAMINES BY AMINATION OF HYDROXYL-CONTAINING TERTIARY AMINES (D#80,578-F) ABSTRACT OF THE DISCLOSURE A method for converting a bis(polyalkoxy)-N-alkylamine to a bis(diaminopolyalkoxy)-N-alkylamine has been discovered. The method comprises alkoxylating an alkylamine to a bis(polyalkoxy)-N-alkylamine. The alkylamine is selected to sterically hinder the resulting tertiary amine. The alkoxylate is then catalytically aminated according to well known procedures with a high yield of the diamine resulting. Compounds prepared by this method are of the formula: R - N - (POx-NH2)2 wherein: PO is propylene oxide, x ranges from 2 to 40, and R is a sterically hindering alkyl such as isopropyl or tertiary butyl. The compounds are useful for curing epoxy thermoset resins. They are uniquely suited to reactions with polyisocyanates to prepare plastic parts, such as automobile body panels, by reaction injection molding.

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