Process for preparation of an aromatic N-glycidylamine
AssigneeGrasim Industries Limited
InventorsAshok Kumar Singh, Prashant Samant, Alif Lalani, Mukesh Kathalewar, Vishnu More
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Abstract
A process for preparing an aromatic N-glycidylamine comprising a step of heating a mixture of an amine having at least one aromatic aminohydrogen atom with at least 0.7 equivalent of epichlorohydrin per aminohydrogen equivalent of the amine in presence of a catalyst dissolved in an inert organic solvent, at a pressure in a range of 200 mbar to 600 mbar; and adding a base to the mixture at a pressure in a range of 200 mbar to 600 mbar to facilitate dehydrochlorination of product of the previous step to obtain the aromatic N-glycidylamine.
Claims14
A process for preparing an aromatic N-glycidylamine comprising:
- a) heating a mixture of an amine having at least one aromatic aminohydrogen atom with at least 0.7 equivalent of epichlorohydrin per aminohydrogen equivalent of the amine in presence of a catalyst dissolved in an inert organic solvent, at a pressure in a range of 200 mbar to 600 mbar;
- and
- b) adding a base to the mixture at a pressure in a range of 200 mbar to 600 mbar to facilitate dehydrochlorination of product of step (a) to obtain the aromatic N-glycidylamine,
- wherein the heating of the mixture is carried out for 2 hours to 4 hours,
- wherein prior to adding the base, the mixture is maintained at a temperature in a range of 60° C. to 90° C. for a period of 3 hours to 7 hours, at pressure in a range of 200 mbar to 600 mbar, and
- wherein after adding the base, the mixture is heated at a temperature in a range of 50° C. to 100° C. and at the pressure in a range of 200 mbar to 600 mbar for 2 hours to 7 hours.
Dependencies are inferred from the claim text.