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Dupont patents

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By: KERRY PIANOFORTE

Editor, Coatings World, Coatings World

Patent No. U.S. 7,125,932 B2
E.I. du Pont Nemours and Company has obtained a patent for a polyol prepared by reacting together polyhydroxy-tertiary amine with organic polyisocyanate, the polyhydroxyl-tertiary amine having at least two hydroxyl groups being bonded indirectly to a nitrogen atom of the amine through a chain containing at least two carbon atoms, essentially all of the isocyanate groups of the organic polyisocyanate being reacted with hydroxyl groups of the amine.

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