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Title:
PLASTIC SUBSTRATE AND PLASTIC LENS
Document Type and Number:
WIPO Patent Application WO/2021/111830
Kind Code:
A1
Abstract:
Provided is a plastic substrate that has excellent luminous transmittance and excellent blue light blocking properties, as well as low yellowness. A plastic substrate according to the present disclosure contains 2-(3-t-butyl-2-hydroxy-5-methylphenyl)-5-chloro-2H-benzotriazole, a resin, a first bluing agent of which the maximum absorption wavelength is located in the 570-605 nm range, and a second bluing agent of which the maximum absorption wavelength is located in the 510-535 nm range, wherein: the resin is formed from raw materials including an episulfide compound and a polythiol compound; and the content of the 2-(3-t-butyl-2-hydroxy-5-methylphenyl)-5-chloro-2H-benzotriazole is 0.35-0.95 parts by mass relative to 100 parts by mass of the resin.

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Inventors:
WAKIYASU HIDEYUKI (JP)
Application Number:
PCT/JP2020/042048
Publication Date:
June 10, 2021
Filing Date:
November 11, 2020
Export Citation:
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Assignee:
NIKON ESSILOR CO LTD (JP)
International Classes:
G02C7/02; C08G75/08; C08K5/3475; C08L81/00; G02B1/04
Domestic Patent References:
WO2014133111A12014-09-04
WO2015046540A12015-04-02
WO2017090725A12017-06-01
WO2018155475A12018-08-30
WO2019211242A12019-11-07
Foreign References:
JP2011212850A2011-10-27
JP2007090574A2007-04-12
JP2005121679A2005-05-12
Attorney, Agent or Firm:
ITOH Hideaki (JP)
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