Resin composition

Patent metadata

Field	Value
Publication number	US-2018273673-A1
Application number	US-201815992839-A
Country	US
Kind code	A1
Filing date	May 30, 2018
Priority date	Jul 29, 2016
Publication date	Sep 27, 2018
Grant date	—

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.

First claim

1 . A resin composition obtained by polymerizing a polymerizable composition including a polyisocyanate compound and a polythiol compound, wherein
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, and 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.

2 . The resin composition according to claim 1 , wherein the total amount of the dye L and the dye S to be added is 200 ppb by mass or more and 10,000 ppb by mass or less in the resin composition.

3 . The resin composition according to claim 1 , wherein the polyisocyanate compound is one or more selected from the group consisting of xylylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, bis(isocyanatomethyl)cyclohexane, dicyclohexylmethane diisocyanate, and bis(isocyanatomethyl)bicycloheptane.

4 . The resin composition according to claim 1 , wherein the polythiol compound is one or more selected from the group consisting of bis(mercaptomethyl)dithiane, pentaerythritol tetrakis(2-mercaptoacetate), pentaerythritol tetrakis(3-mercaptopropionate), bis(mercaptoethylthio)mercaptopropane, bis(mercaptomethyl)-3,6,9-trithiaundecanedithiol, trimethylolpropane tris(2-mercaptoacetate), trimethylolpropane tris(3-mercaptopropionate), butanediol bis(2-mercaptoacetate), butanediol bis(3-mercaptopropionate), dipentaerythritol hexakis(2-mercaptoacetate), and dipentaerythritol hexakis(3-mercaptopropionate.

5 . The resin composition according to claim 4 , wherein bis(mercaptomethyl)-3,6,9-trithiaundecanedithiol is a mixture of 4,7-bis(mercaptomethyl)-3,6,9-trithiaundecane-1,11-dithiol, 4,8-bis(mercaptomethyl)-3,6,9-trithiaundecane-1,11-dithiol, and 5,7-bis(mercaptomethyl)-3,6,9-trithiaundecane-1,11-dithiol.

6 . The resin composition according to claim 1 , wherein the polymerizable composition further includes an ultraviolet absorber.

7 . A spectacle lens comprising a base material made of the resin composition according to claim 1 .

8 . A method for producing a resin composition, comprising a step of polymerizing a polymerizable composition including a polyisocyanate compound and a polythiol compound, wherein
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, and 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.

Assignees

• Hoya Lens Thailand Ltd

Inventors

• Kageyama Yukio
• Kousaka Masahisa
• Ohnishi Tomofumi

Classifications

• C08G18/3868 Primary

  the sulfur atom belonging to a sulfide group · CPC title

• C08G18/758

  containing two or more cycloaliphatic rings · CPC title

• C08G18/3876

  containing mercapto groups · CPC title

• C08G18/7642

  containing at least two isocyanate or isothiocyanate groups linked to the aromatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate groups, e.g. xylylene diisocyanate or homologues substituted on the aromatic ring · CPC title

• G02C7/00

  Optical parts (characterised by the material G02B1/00) · CPC title