A continuous process for the aminolysis of ethylene copolymers

C - Chemistry – Metallurgy – 08 – F

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C08F 8/32 (2006.01)

Patent

CA 2178725

A continuous process for the aminolysis of polymers produced from ethylenically unsaturated structural units comprising contacting, in a reaction vessel, (a) a molten polymer containing structural units produced from alpha-olefins having from 2 to 8 carbon atoms, and esters of .alpha.,.beta.-ethylenically-unsaturated carboxylic acids in a reaction vessel; and (b) a liquid phase comprising an amine-containing compound, e.g., an alkylamine having an alkyl group containing 1-30 carbon atoms, ammonia, or derivatives thereof, in the presence of (c) a catalytically effective amount of a catalyst, which is preferably a metal-containing solution, for a period of time effective to produce a polymer containing acrylamide structural units, wherein the period of time is less than about 1 hour. This process is performed continuously in a reaction vessel, preferably in at least one reactive extruder, under conditions effective to provide an ethylene co-polymer containing acrylamide structural units.

On décrit un traitement continu d'aminolyse de polymères obtenus à l'aide d'unités structurelles insaturées en éthylène, comprenant la mise en contact dans une cuve de réaction; (a) d'un polymère fondu contenant des unités structurelles obtenues dans une cuve de réaction à l'aide d'alpha-oléfines possédant de 2 à 8 atomes et d'esters d'acides carboxyliques .alpha.,.beta., insaturés en éthylène; et (b) d'une phase liquide comprenant un composé contenant une amine, par exemple une alkylamine possédant un groupe alkyle contenant de 1 à 30 atomes de carbone, ammoniac ou un dérivé de celui-ci, en présence (c) d'une quantité efficace de catalyseur qui est de préférence une solution contenant un métal, pendant un temps suffisant (environ moins d'une heure) pour obtenir un polymère contenant des unités structurelles acrylamides. Ce traitement est réalisé en continu dans une cuve de réaction, de préférence dans au moins une extrudeuse de réaction, dans des conditions permettant d'obtenir un copolymère contenant des unités structurelles acrylamides.

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