The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2025
Filed:
Jan. 05, 2021
Lg Chem, Ltd., Seoul, KR;
Hyun Chul Jung, Daejeon, KR;
Sae Hume Park, Daejeon, KR;
Won Seok Kim, Daejeon, KR;
Ji Ha Kim, Daejeon, KR;
Young Shil Do, Daejeon, KR;
Yu Jin An, Daejeon, KR;
Wan Kyu Oh, Daejeon, KR;
Jeong Heon Ahn, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
Provided is a method of preparing an acrylonitrile dimer, the method including: supplying an acrylonitrile monomer, a phosphorus-based catalyst, an alcohol solvent, and an ionic liquid to a reactor to perform a dimerization reaction to prepare a single-phase dimerization reaction product (S10); supplying a reactor discharge stream including the dimerization reaction product to a first distillation column, separating the alcohol solvent and an unreacted acrylonitrile monomer from an upper discharge stream, and supplying a lower discharge stream including an acrylonitrile dimer, the ionic liquid, and the phosphorus-based catalyst to a second distillation column (S20); and separating an upper discharge stream including the acrylonitrile dimer and separating a lower discharge stream including the ionic liquid and the phosphorus-based catalyst, from the second distillation column (S30).