公开(公告)号：US10766996B2

公开(公告)日：2020-09-08

申请号：US16015670

申请日：2018-06-22

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yukio Kageyama ,  Masahisa Kousaka ,  Tomofumi Ohnishi

IPC: C08G18/38 ,  C07C321/14 ,  C07C319/14 ,  C07C319/22 ,  C08G18/76 ,  G02B1/04 ,  C07C319/20

Abstract: Provided is a method for producing a polythiol compound, including reacting 2-mercaptoethanol with an epihalohydrin, wherein the reaction is carried out in the presence of a halide selected from the group consisting of a 2,3-dihalogeno-1-propanol and an allyl halide, and an amount of the halide in the reaction is more than 0.50% by mass and 10.00% by mass or less with respect to the total amount of the halide and the epihalohydrin. Also provided are a method for producing a curable composition, including producing a polythiol compound by the abovementioned production method, and a method for producing a cured product, including producing a curable composition by the abovementioned production method.

公开(公告)号：US11760831B2

公开(公告)日：2023-09-19

申请号：US17254438

申请日：2019-06-26

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yukio Kageyama

IPC: C08G18/75 ,  C08G18/24 ,  C08G18/28 ,  C08G18/38 ,  C08G18/76 ,  G02B1/04 ,  C08F222/10 ,  G02C7/02 ,  C08L81/02 ,  C08G75/06 ,  C08G18/08 ,  C08K5/21 ,  C08G18/32

CPC classification number: C08G18/757 ,  C08F222/1025 ,  C08G18/08 ,  C08G18/242 ,  C08G18/2815 ,  C08G18/2835 ,  C08G18/324 ,  C08G18/3234 ,  C08G18/3855 ,  C08G18/3874 ,  C08G18/3876 ,  C08G18/76 ,  C08G18/7621 ,  C08G18/7635 ,  C08G18/7642 ,  C08G75/06 ,  C08K5/21 ,  C08L81/02 ,  G02B1/04 ,  G02B1/041 ,  G02B1/043 ,  G02C7/02 ,  C08F222/1025 ,  C08F222/102 ,  G02B1/043 ,  C08L75/04 ,  C08L81/00 ,  C08K5/21 ,  C08L33/00 ,  C08K5/21 ,  C08L75/04 ,  C08K5/21 ,  C08L81/00

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：US11834549B2

公开(公告)日：2023-12-05

申请号：US16642802

申请日：2019-03-29

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yukio Kageyama ,  Masahide Yamada

IPC: C08G18/38 ,  G02B1/04 ,  C08G18/76 ,  B29D11/00 ,  C08G18/10 ,  C08K5/3475 ,  B29K75/00

CPC classification number: C08G18/7642 ,  B29D11/00009 ,  C08G18/10 ,  C08G18/3876 ,  C08K5/3475 ,  G02B1/041 ,  B29K2075/00

Abstract: A method for producing a polymerizable composition, the method including: step (1) of preparing composition A having a water content of 200 ppm by mass or less, the composition A including a polyisocyanate component but not including a polymerization catalyst; step (2) of preparing composition B having a water content of 1,000 ppm by mass or less, the composition B including a polythiol component; and step (3) of mixing the composition A and the composition B and obtaining a polymerizable composition, and also a method for producing an optical component, the method including: a step of injecting the above-mentioned polymerizable composition into a molding die; and a step of polymerizing the polymerizable composition.

公开(公告)号：US10975026B2

公开(公告)日：2021-04-13

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 ,  C07C319/20 ,  C07C335/32 ,  G02B1/04 ,  C08G18/24 ,  C08G18/76 ,  C08G18/38

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：US12139573B2

公开(公告)日：2024-11-12

申请号：US17598018

申请日：2020-03-27

Applicant: HOYA LENS THAILAND LTD.

Inventor： Masahisa Kousaka ,  Yukio Kageyama ,  Tomofumi Ohnishi ,  Yoshio Sano

IPC: C08G18/38 ,  C08G18/75 ,  C08G18/76 ,  G02B1/04 ,  G02C7/02

Abstract: A polymerizable composition for optical components, which can prevent striae while keeping strength for optical components when a thick optical component is produced. A polymerizable composition for optical components is a mixture of a first composition including a polyisocyanate compound (A) and a second composition including a polythiol compound (B1) and a thiol group-containing substance (B2), the composition includes the thiol group-containing substance (B2) showing peak at a position at retention time three minutes or more from a peak of the polythiol compound (B1) in a chromatogram obtained by analyzing the composition by high performance liquid chromatography (HPLC) analysis, and the ratio (A/B1) is 80/100 to 95/100, wherein the equivalent ratio (A/B1) is an equivalent A of the polyisocyanate compound (A) using a weight and group number of the polyisocyanate compound (A) to B1 of the polythiol compound (B1) using a weight and group number of the polythiol compound (B1).

公开(公告)号：US10752726B2

公开(公告)日：2020-08-25

申请号：US15992839

申请日：2018-05-30

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yukio Kageyama ,  Masahisa Kousaka ,  Tomofumi Ohnishi

IPC: C08L75/04 ,  C08G18/38 ,  G02B1/04 ,  C08G18/24 ,  C08G18/73 ,  C08G18/75 ,  C08G18/76 ,  G02B1/08 ,  G02C7/02

Abstract: To provide a resin composition having a good slightly bluish color tone, a spectacle lens including a base material made of the resin composition, and a method for producing the resin composition.Provided is a resin composition obtained by polymerizing a polymerizable composition including a polyisocyanate compound and a polythiol compound. The polymerizable composition includes a dye L having an absorption maximum wavelength of 550 nm or more and 600 nm or less in a toluene solution of 20 ppm by mass, and a dye S having an absorption maximum wavelength of 500 nm or more and less than 550 nm in a toluene solution of 20 ppm by mass. A mass ratio [(mass of dye L)/(mass of dye S)] of the dye L to the dye S is 5 or more and 500 or less.