Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CURABLE COMPOSITION FOR OPTICAL MATERIALS, AND OPTICAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/129930
Kind Code:
A1
Abstract:
The present invention is a curable composition for optical materials, which is characterized by containing (A) 100 parts by mass of a radically polymerizable monomer, (B) 0.1-5 parts by mass of an ultraviolet absorbent which is composed of a benzotriazole compound having a specific structure, and which has a maximum absorption wavelength of 360 nm or more but less than 380 nm, while having an absolute value of the solubility parameter (SP) difference of 5.5 (cal/cm3)1/2 or less from the radically polymerizable monomer (A), (C) 1-5 parts by mass of an ultraviolet absorbent which is composed of at least one compound that is selected from among benzotriazole compounds, benzophenone compounds and triazine compounds, and which has a maximum absorption wavelength of less than 360 nm, and (D) 0.05-0.5 part by mass of a radical polymerization initiator. The present invention is able to provide a curable composition for optical materials, which is suitable for use as a coating material that has ultraviolet and blue light blocking ability, while having good storage stability and good weather resistance.

More Like This:
WO/2021/150311HIGH REFRACTIVE INDEX IMPRINT COMPOSITIONS AND MATERIALS AND PROCESSES FOR MAKING THE SAME
JPS5850611[Title of the Invention] Photo-setting resin constituent
WO/2017/175545COMPOSITION, FILM, CURED FILM, OPTICAL SENSOR, AND PROCESS FOR PRODUCING FILM
Inventors:
HANASAKI TAICHI (JP)
OHARA AYAKO (JP)
TAKENAKA JUNJI (JP)
MOMODA JUNJI (JP)
Application Number:
PCT/JP2019/049276
Publication Date:
June 25, 2020
Filing Date:
December 17, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOKUYAMA CORP (JP)
International Classes:
C08F2/48; C08F2/44; C08F20/10; G02C7/02; G02C7/10
Domestic Patent References:
WO2009038134A12009-03-26
Foreign References:
JP3223460B22001-10-29
JP2016125049A2016-07-11
JP2001235601A2001-08-31
JPS4813900B11973-05-01
JP2017031230A2017-02-09
JP2017019903A2017-01-26
JP4405833B22010-01-27
JP5016266B22012-09-05
JP5084727B22012-11-28
Other References:
See also references of EP 3901180A4
Attorney, Agent or Firm:
TAGUCHI, Masahiro et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: STATOR ADHESIVE LAMINATED CORE AND ROTATING ELECTRICAL MACHINE

Next Patent: CURABLE COMPOSITION FOR OPTICAL MATERIALS, AND OPTICAL MATERIAL