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:
Mar. 24, 2026
Filed:
Sep. 16, 2021
SK Pucore Co., Itd., Ulsan, KR;
Jae Young Pai, Gyeonggi-do, KR;
Jeong Moo Kim, Gyeonggi-do, KR;
Hyuk Hee Han, Gyeonggi-do, KR;
Jung Hwan Myung, Gyeonggi-do, KR;
Kyeong Hwan You, Gyeonggi-do, KR;
Joo Young Jung, Gyeonggi-do, KR;
Myung Ok Kyun, Gyeonggi-do, KR;
Ji Yeon Ryu, Gyeonggi-do, KR;
SK pucore co., Itd., Ulsan, KR;
Abstract
A polythiol composition according to exemplary embodiments includes a first polythiol compound and a second polythiol compound having a molecular weight greater than that of the first polythiol compound and the number of functional groups greater than or equal to the number of functional groups of the first polythiol compound. A content of the second polythiol compound is 500 ppm to 20,000 ppm based on a weight of the first polythiol compound. The reaction rate of an isocyanate-based compound may be controlled through the second polythiol compound, thus to suppress a stria phenomenon and improve mechanical properties of an optical product.