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:
Nov. 10, 2020
Filed:
Mar. 08, 2017
Lg Chem, Ltd., Seoul, KR;
Jun Wye Lee, Daejeon, KR;
Seung Young Park, Daejeon, KR;
Jin Woo Lee, Daejeon, KR;
Hyun Ju Cho, Daejeon, KR;
Jung Min Sohn, Daejeon, KR;
Yoon Jung Kim, Daejeon, KR;
Bo Hyun Seong, Daejeon, KR;
Taek Jun Jung, Daejeon, KR;
Yun Ki Cho, Daejeon, KR;
Yong Hee An, Daejeon, KR;
Sung-Kyoung Kim, Daejeon, KR;
Hyun Min Kim, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present disclosure relates to an economical method of preparing a resin composition including a polyalkylene carbonate with improved thermal stability and processability. More specifically, the method of preparing a resin composition includes the steps of polymerizing carbon dioxide and an epoxide compound in the presence of a zinc-based catalyst and a solvent, recovering monomers, removing the catalyst and recovering raw materials, solution-blending with a thermostable resin to improve the thermal stability and processability, and removing the solvent and byproducts from the reaction mixture by using an agitated flash drum and an extrusion or kneader-type devolatilizer.