Nucleophilic amine functionalized polyolefin
AssigneeDuPont Canada Inc.
InventorHaiqi Xie
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Abstract
This invention relates to a method of producing nucleophilic amine functionalized polyolefins by reacting a polymer carrying an electrophilic functional group with a diamine having amino end-groups having different reactivities. The nucleophilic amine functionalized polyolefin has the composition: Polyolefin--X--R.sub.1 --NHR.sub.2 where X is selected from the group of imide, amide, sulphonamide or amine R.sub.1 is a bivalent organic radical R.sub.2 is H or an alkyl group The nucleophilic amine functionalized polyolefin has uses as a compatibilizer, adhesive, dyeable material, and dyability improver.
Claims13
A continuous method of producing nucleophilic amine functionalized polyolefin by reacting in an extruder a reactive polymer carrying an electrophilic functional group with a diamine or its salt, wherein the diamine or salt has amino end-groups having different reactivities, the reaction being carried out under conditions that assure that the diamine is present throughout the reaction in a mole amount at least equal to the mole amount of the electrophilic functional group of the reactive polymer, such conditions comprising:
- a) establishing a feed of a non-reactive resin through the extruder, then b) establishing the diamine feed, and then c) switching from the feed of non-reactive resin to a feed of reactive polymer.
Dependencies are inferred from the claim text.