公开(公告)号：US20210277171A1

公开(公告)日：2021-09-09

申请号：US17254438

申请日：2019-06-26

Applicant: Yukio KAGEYAMA ,  HOYA LENS THAILAND LTD.

Inventor： Yukio KAGEYAMA

IPC: C08G18/75 ,  C08G18/38 ,  C08G18/24 ,  C08G18/76 ,  C08G18/28 ,  G02B1/04

Abstract: The present invention relates to [1] a polymerizable composition for optical member containing a polymerizable component and a urethaneurea compound having a structural unit derived from tolylene diisocyanate in an amount of 0.1 to 10 parts by mass based on 100 parts by mass of a total amount of the polymerizable component; [2] a production method of an optical member, including a step of injecting the polymerizable composition of [1] into a molding die, and a step of polymerizing the polymerizable composition; and [3] a spectacle lens including a spectacle lens substrate obtained by the production method of [2].

公开(公告)号：US20190062270A1

公开(公告)日：2019-02-28

申请号：US16171476

申请日：2018-10-26

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yukio KAGEYAMA ,  Masahisa KOUSAKA ,  Akinori YAMAMOTO

IPC: C07C319/14 ,  C08G18/38 ,  C07C335/32 ,  C07C319/20

Abstract: The method for producing a polythiol compound includes reacting 2-mercaptoethanol having a water content of 3000 ppm or less on a mass basis, with epihalohydrin to obtain a halide represented by the formula (1), wherein X represents a halogen atom; and obtaining at least one polythiol compound selected from the group consisting of a polythiol compound represented by the formula (4), a polythiol compound represented by the formula (5), a polythiol compound represented by the formula (6), and a polythiol compound represented by the formula (7).

公开(公告)号：US20180297943A1

公开(公告)日：2018-10-18

申请号：US16015620

申请日：2018-06-22

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yukio KAGEYAMA ,  Masahisa KOUSAKA ,  Tomofumi OHNISHI

IPC: C07C319/14 ,  C08G18/38 ,  C08G18/76 ,  G02B1/04

Abstract: Provided is a method for producing a polythiol compound, including obtaining one or more polythiol compounds selected from the group consisting of a polythiol compound represented by Formula (3), a polythiol compound represented by Formula (4), and a polythiol compound represented by Formula (5) through steps including: reacting 2-mercaptoethanol with an epihalohydrin in an amount of 1.00 equivalent or more and 1.25 equivalent or less with respect to the 2-mercaptoethanol to obtain a polyol compound represented by Formula (1); and reacting the polyol compound represented by Formula (1) with an alkali metal sulfide in an amount of 1.04 equivalent or more and 1.25 equivalent or less with respect to the 2-mercaptoethanol to obtain a polyol compound represented by Formula (2). [in Formula (1), X represents a halogen atom]