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:
Oct. 15, 2024
Filed:
May. 15, 2020
Lg Chem, Ltd., Seoul, KR;
Ji Hyun Park, Daejeon, KR;
Dae Woong Lee, Daejeon, KR;
Sung Hyun Park, Daejeon, KR;
Seok Pil Sa, Daejeon, KR;
Seul Ki Im, Daejeon, KR;
Hyun Mo Lee, Daejeon, KR;
Yun Kon Kim, Daejeon, KR;
Ki Soo Lee, Daejeon, KR;
Myung Han Lee, Daejeon, KR;
Eun Ji Shin, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A polyolefin-polystyrene multi-block copolymer and method of making the same is disclosed herein. In some embodiments, a polyolefin-polystyrene multi-block copolymer having a ratio of a loss modulus (E″) to a storage modulus (E') satisfying the following conditions (a) and (b) over a temperature range of −80° C. to 40° C., wherein the ratio is represented by a loss tangent (tan δ) value and is obtained by dynamic mechanical analysis (DMA), (a) a maximum of the tan δ value in a peak present in the temperature range is 0.20 to 0.35, and (b) a half-width of the peak ranges from 32.0° C. to 50.0° C. The polyolefin-polystyrene multi-block copolymer has a structure in which polystyrene chains are attached to both ends of a polyolefin chain.