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US 5,399,750 AGranted
Preparation of maleamic acid
AssigneeRhone-Poulenc Chimie
InventorsDaniel Brun, Pierre-Yves Lahary
Life of this patent
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Abstract
Maleamic acid (aminomaleic acid) is improvedly prepared by reacting gaseous ammonia with molten maleic anhydride under reactant contact conditions of high surface area, for example reacting said gaseous NH.sub.3 with a thin film of said molten maleic anhydride or with said molten maleic anhydride in a state of vigorous agitation.
Claims15
A process for the preparation of maleamic acid, comprising reacting gaseous ammonia with molten maleic anhydride under reactant contact conditions of high surface area.
Dependencies are inferred from the claim text.