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US 12,698,257 B2Granted
Method of preparing acrylonitrile dimer
AssigneeLG Chem, Ltd.
InventorsYujin An, Wonseok Kim, Hyunchul Jung, Sae Hume Park, Wan Kyu Oh
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Abstract
The present disclosure relates to a method for preparing acrylonitrile dimer including: (1) reacting acrylonitrile in the presence of a reaction solvent, a proton-donating solvent, and a phosphorus-based catalyst to prepare an acrylonitrile dimer; and (2) adding an amine-based solvent to a reaction mixture containing the acrylonitrile dimer prepared in (1) and extracting the same to separate the acrylonitrile dimer and the phosphorus-based catalyst.
Claims12
A method for preparing acrylonitrile dimer comprising:
- (1) reacting acrylonitrile in the presence of a reaction solvent, a proton-donating solvent, and a phosphorus-based catalyst to prepare an acrylonitrile dimer;
- (2A) removing the reaction solvent, the proton-donating solvent and unreacted acrylonitrile;
- and
- (2) adding an amine-based solvent to a reaction mixture containing the acrylonitrile dimer prepared in (1) and extracting the same to separate the acrylonitrile dimer and the phosphorus-based catalyst;
- wherein removing the reaction solvent, the proton-donating solvent and unreacted acrylonitrile in (2A) is performed before the addition of the amine-based solvent.
2 more elements
Dependencies are inferred from the claim text.