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:
Feb. 18, 2025
Filed:
Nov. 27, 2019
Lotte Chemical Corporation, Seoul, KR;
Su-Jeong Jeong, Daejeon, KR;
Hyun-Yul Woo, Daejeon, KR;
Joon-Keun Min, Daejeon, KR;
Rai-Ha Lee, Suwon-si, KR;
Eun-Hye Shin, Daejeon, KR;
Byung-Hun Chae, Daejeon, KR;
LOTTE CHEMICAL CORPORATION, Seoul, KR;
Abstract
The present invention relates to a high-melt-strength polypropylene resin, and a preparation method therefor. A method for preparing the high-melt-strength polypropylene resin, according to the present invention, comprises the steps of: creating a polypropylene by polymerizing propylene monomers in the presence of a metallocene catalyst; and putting a diene compound and a comonomer into the created polypropylene and unreacted propylene monomers and reacting same, thereby forming a C40 or greater long-chain branch on the main chain of the polypropylene.