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:
Jun. 03, 2025
Filed:
Aug. 19, 2020
Lg Chem, Ltd., Seoul, KR;
Yu Jin An, Daejeon, KR;
Wan Kyu Oh, Daejeon, KR;
Ji Ha Kim, Daejeon, KR;
Hyun Chul Jung, Daejeon, KR;
Sae Hume Park, Daejeon, KR;
Jeong Heon Ahn, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
Provided is a method of preparing an acrylonitrile dimer including: supplying an acrylonitrile monomer, a phosphorus-based catalyst, and an alcohol solvent to a reactor to perform a dimerization reaction to produce dimerized reactants (S); cooling the dimerized reactants to crystallize the phosphorus-based catalyst (S); separating the crystallized phosphorus-based catalyst (S); and supplying the dimerized reactants from which the phosphorus-based catalyst is separated to a distillation column to separate the acrylonitrile dimer (S).