Process for producing pyrrolidone and N-alkyl pyrrolidones
AssigneeAkzo Nobel N.V.
InventorsManfred Bergfeld, Gunter Wiesgickl
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for producing pyrrolidone and N-alkyl pyrrolidones from saturated or unsaturated 1,4-dicarboxylic acids or their anhydrides, hydrogen, and a primary amine, characterized in that the dicarboxylic acid or its anhydride is allowed to react in an appropriate reactor with hydrogen or ammonia via a first catalyst bed and the unisolated intermediate product is subsequently reacted with the primary amine or ammonia directly via a second, downstream catalyst bed.
Claims16
Process for producing pyrrolidone and N-alkyl pyrrolidones from saturated or unsaturated 1,4-dicarboxylic acids or their anhydrides;
- hydrogen;
- and a primary amine or ammonia, wherein said dicarboxylic acid or its anhydride is allowed to react in an appropriate reactor with hydrogen via a first catalyst bed and the unisolated intermediate product is subsequently reacted with the primary amine or ammonia via a second, downstream catalyst bed.
Dependencies are inferred from the claim text.