Transparent plastic substrate and plastic lens

Patent metadata

Field	Value
Publication number	US-2016215121-A1
Application number	US-201415025440-A
Country	US
Kind code	A1
Filing date	Sep 29, 2014
Priority date	Sep 30, 2013
Publication date	Jul 28, 2016
Grant date	—

Abstract

To provide a transparent plastic substrate having a high cut rate of blue light, a plastic lens and a transparent plastic member. A transparent plastic substrate containing a benzotriazole compound represented by the formula (1), a plastic lens containing the transparent plastic substrate, and a transparent plastic member containing a benzotriazole compound represented by the formula (1).

First claim

1 . A transparent plastic substrate comprising a benzotriazole compound represented by the following formula (1):

wherein R 1 represents an alkyl group having from 1 to 3 carbon atoms or an alkoxy group having from 1 to 3 carbon atoms; m represents an integer of 0 or 1; R 2 represents an alkyl group having from 1 to 12 carbon atoms or an alkoxy group having from 1 to 12 carbon atoms; R 3 represents a hydrogen atom or a divalent hydrocarbon group having from 1 to 8 carbon atoms; n represents a valence of the group represented by R 3 , which is 1 or 2, provided that in the case where m is 1, R 1 and R 2 may be the same as or different from each other; and X represents a group imparting a mesomeric effect.

2 . The transparent plastic substrate according to claim 1 , wherein X in the benzotriazole compound is at least one selected from the group consisting of a chlorine atom, a bromine atom, a fluorine atom, an iodine atom, a sulfo group, a carboxyl group, a nitrile group, an alkoxy group, a hydroxyl group and an amino group.

3 . The transparent plastic substrate according to claim 1 , wherein the benzotriazole compound is represented by the following general formula (1-1):

wherein R 1 represents an alkyl group having from 1 to 3 carbon atoms or an alkoxy group having from 1 to 3 carbon atoms; m represents an integer of 0 or 1; and R 2 represents an alkyl group having from 1 to 12 carbon atoms or an alkoxy group having from 1 to 12 carbon atoms, provided that in the case where m is 1, R 1 and R 2 may be the same as or different from each other.

4 . The transparent plastic substrate according to claim 1 , wherein the transparent plastic substrate contains the benzotriazole compound in an amount in a range of from 0.05 to 3.00 parts by mass per 100 parts by mass of a resin component comprising the transparent plastic substrate.

5 . The transparent plastic substrate according to claim 1 , wherein the benzotriazole compound is at least one selected from 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chloro-2H-benzotriazole, 2-(3-tert-butyl-2-hydroxy-5-ethylphenyl)-5-chloro-2H-benzotriazole, 2-(4-ethoxy-2-hydroxyphenyl)-5-chloro-2H-benzotriazole and 2-(4-butoxy-2-hydroxyphenyl)-5-chloro-2H-benzotriazole.

6 . The transparent plastic substrate according to claim 1 , wherein the transparent plastic substrate has a cut rate of light in a wavelength range of from 380 to 500 nm of 35% or more.

7 . The transparent plastic substrate according to claim 1 , wherein the transparent plastic substrate has a cut rate of light having a wavelength of 410 nm of 50% or more.

8 . The transparent plastic substrate according to claim 1 , wherein a resin component constituting the transparent plastic substrate is at least one selected from the group consisting of a (thio)urethane resin, an episulfide resin, a polycarbonate resin, a polyamide resin, an acrylic resin, a vinyl resin and a polyester resin.

9 . A plastic lens comprising the transparent plastic substrate according to claim 1 .

10 . The plastic lens comprising the transparent plastic substrate according to claim 9 , wherein a resin component constituting the transparent plastic substrate is a (thio)urethane resin and/or an episulfide resin.

11 . The plastic lens according to claim 10 , wherein a monomer forming the transparent plastic substrate is a combination of an aliphatic polyisocyanate compound and/or an alicyclic polyisocyanate compound, and a polythiol compound.

12 . A transparent plastic member comprising a benzotriazole compound represented by the following formula (1):

wherein R 1 represents an alkyl group having from 1 to 3 carbon atoms or an alkoxy group having from 1 to 3 carbon atoms; m represents an integer of 0 or 1; R 2 represents an alkyl group having from 1 to 12 carbon atoms or an alkoxy group having from 1 to 12 carbon atoms; R 3 represents a hydrogen atom or a divalent hydrocarbon group having from 1 to 8 carbon atoms; n represents a valence of the group represented by R 3 , which is 1 or 2, provided that in the case where m is 1, R 1 and R 2 may be the same as or different from each other; and X represents a group imparting a mesomeric effect.

13 . The transparent plastic member according to claim 12 , wherein a transparent plastic member comprises a transparent plastic substrate and a functional layer, and the benzotriazole compound represented by the formula (1) is contained in any of the transparent plastic substrate and the functional layer.

Assignees

• Hoya Lens Thailand Ltd

Inventors

• Kousaka Masahisa
• Tasaki Natsumi

Classifications

• G02B1/041

  Lenses · CPC title

• C08L81/04

  Polysulfides · CPC title

• C08J2375/04

  Polyurethanes · CPC title

• C08L101/00

  Compositions of unspecified macromolecular compounds · CPC title

• C08K5/3475 Primary

  condensed with carbocyclic rings · CPC title