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:
Jul. 28, 2020
Filed:
Mar. 30, 2018
Applicant:
Skc Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Inventors:
Junghwan Shin, Suwon-si, KR;
Seung Mo Hong, Incheon, KR;
Jongmin Shim, Hwaseong-si, KR;
Hyuk Hee Han, Suwon-si, KR;
Jung Hwan Myung, Seoul, KR;
Hyeon Myeong Seo, Ulsan, KR;
Yu Jeong Song, Seoul, KR;
JooYoung Jung, Pyeongtaek-si, KR;
Assignee:
SKC CO., LTD., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 319/14 (2006.01); C07C 319/26 (2006.01); C08G 18/76 (2006.01); C08G 18/38 (2006.01); G02B 1/04 (2006.01); C08G 18/24 (2006.01); B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
C07C 319/14 (2013.01); B29D 11/00009 (2013.01); C07C 319/26 (2013.01); C08G 18/246 (2013.01); C08G 18/3868 (2013.01); C08G 18/3876 (2013.01); C08G 18/7642 (2013.01); G02B 1/041 (2013.01); G02B 1/043 (2013.01); B29D 11/00442 (2013.01);
Abstract
Provided is a preparation of a thioether-based polythiol in a high purity using a metal monosulfide for the incorporation of a thioether group, wherein the content of such components as a metal polysulfide present in the metal monosulfide is controlled to a predetermined level or lower. As a result, an optical lens of high quality with a high refractive index can be produced using the polythiol.