公开(公告)号：US20180282270A1

公开(公告)日：2018-10-04

申请号：US15941289

申请日：2018-03-30

Applicant: SKC CO., LTD.

Inventor： Junghwan SHIN ,  Seung Mo HONG ,  Jongmin SHIM ,  Hyuk Hee HAN ,  Jung Hwan MYUNG ,  Hyeon Myeong SEO ,  Yu Jeong SONG ,  JooYoung JUNG

IPC: C07C321/14 ,  C07C319/24 ,  C07C335/32 ,  C07C319/14 ,  C08G18/38 ,  C08G18/76 ,  G02B1/04

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.

公开(公告)号：US20180282269A1

公开(公告)日：2018-10-04

申请号：US15941122

申请日：2018-03-30

Applicant: SKC CO., LTD.

Inventor： Junghwan SHIN ,  Seung Mo HONG ,  Jongmin SHIM ,  Hyuk Hee HAN ,  Jung Hwan MYUNG ,  Hyeon Myeong SEO ,  Yu Jeong SONG

IPC: C07C319/08 ,  C07C319/26 ,  C07C323/64 ,  C08G18/38 ,  G02B1/04

Abstract: Disclosed is to prevent generation of byproducts or a deterioration in the physical properties of a polythiol composition that may be caused by active oxygen during storage thereof by way of controlling the content of active oxygen in the polythiol composition after the synthesis of the polythiol. As a result, it is possible to enhance the long-term storage stability of a polythiol composition after it has been synthesized until it is used in the polymerization reaction.