Polymerizable composition for optical material and optical material

a technology of optical materials and polymerizable compositions, applied in the direction of lenses, spectales/goggles, instruments, etc., can solve the problems of no studies being carried out regarding the use of optical materials, and achieve excellent balance between transparency, heat resistance, and dyeing properties

Inactive Publication Date: 2017-01-19
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018]An object of the present invention is to provide a polymerizable composition for an optical material which has an excellent balance among transparency, heat resistance, and the like and can be used to obtain ultrahigh refractive index plastic lens materials having a refractive index of higher than or equal to 1.60 and an optical material that can be obtained from the same.
[0019]As a result of intensive studies, the present inventors found that a certain composition for which an episulfide compound is used enables the provision of optical materials such as ultrahigh refractive index plastic lenses which have an excellent balance among transparency, refractive index, heat resistance, and the like and have a refractive index of higher than 1.60 and completed the present invention.
[0039]According to the polymerizable composition for an optical material of the present invention, it is possible to obtain an optical material such as an ultrahigh refractive index plastic lens which has an excellent balance among transparency, refractive index, heat resistance, dyeing properties, and the like and has a refractive index of higher than or equal to 1.60.
[0040]Furthermore, when a compound obtained from plant-derived materials is used, it is possible to provide an optical material such as a plastic lens having a degree of biomass of higher than or equal to 25%.

Problems solved by technology

However, no studies are being carried out regarding optical material use.

Method used

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  • Polymerizable composition for optical material and optical material
  • Polymerizable composition for optical material and optical material
  • Polymerizable composition for optical material and optical material

Examples

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examples

[0191]Hereafter, the present invention will be described in more detail using examples, but the present invention is not limited thereto. In the following description, unless otherwise particularly stated, “parts” and % are based on a weight.

[0192](Method for Measuring the Concentration (%) of Unreacted 1,5-Pentamethylene Diisocyanate in Polyisocyanate (1) which is a Composition Including a Modified 1,5-Pentamethylene Diisocyanate)

[0193]The concentration of unreacted 1, 5-pentamethylene diisocyanate in polyisocyanate (1) including a modified product was obtained from standard curves produced using 1,5-pentamethylene diisocyanate obtained in Preparation Example 4 described below as a standard product and the following device.

[0194]Device: Prominence (manufactured by Shimadzu Corporation)

[0195]Column: SHISEIDO SILICA SG-120

[0196]Column temperature: 40° C.

[0197]Eluent: n-Hexane / methanol / 1,2-dichloroethane=90 / 5 / 5 (volume ratio)

[0198]Flow rate: 0.2 ml / min

[0199]Detector: UV 225 nm

[0200]R....

reference preparation example

Synthesis of 1,5-Pentamethylene Diisocyanate Using Plant-Derived Material

preparation example 1

Preparation of Bacteria-Disintegrated Liquid

[0234](Cloning of Lysine Decarboxylase Gene (cadA)) A genome DNA prepared from an Escherichia coli W3110 strain (ATCC27325) according to an ordinary method was used as a mold for PCR.

[0235]Oligonucleotides (synthesized by Invitrogen in trust) having base sequences shown in sequence numbers 1 and 2 which were designed on the basis of the base sequence of lysine decarboxylase gene (cadA) (GenBank Accession No. AP009048) were used as primers for PCR. These primers respectively have restriction enzyme recognition sequences of KpnI and XbaI near a 5′ terminal.

[0236]A reaction cycle made up of denaturation at 94° C. for 30 seconds, annealing at 55° C. for 30 seconds, and an elongation reaction at 68° C. for two minutes was carried out 30 times using a PCR reaction liquid (25 μL) including the genome DNA (1 ng / μL) and the respective primers (0.5 pmol / μL), thereby performing PCR.

[0237]The PCR reaction product and plasmid pUC18 (manufactured by Tak...

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Abstract

A polymerizable composition for an optical material of the present invention includes polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2), an episulfide (b), and a polythiol (c).

Description

TECHNICAL FIELD[0001]The present invention relates to a polymerizable composition for an optical material, an optical material obtained using the same, and a plastic lens.BACKGROUND ART[0002]Compared with inorganic lenses, plastic lenses have a low weight, are not easily cracked, and can be dyed, and thus, recently, have rapidly become widespread in optical elements such as spectacle lenses and camera lenses.[0003]For resins for plastic lenses, there has been a demand for additional improvement in performance, and there has been a demand for an increase in the refractive index, an increase in the Abbe number, a decrease in the specific weight, an improvement of the heat resistance, and the like. Thus far, a variety of resin materials for lenses have been developed and put into use.[0004]Among them, optical materials made of sulfide-based resins have a high refractive index and a high Abbe number and are being studied as ultrahigh refractive index materials having a refractive index ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08G18/38C08G18/73G02C7/12B29D11/00G02B1/04C08G18/79C08J5/00
CPCC08G18/3874C08G18/3876C08G18/792C08G18/73C08J5/00B29D11/00009B29K2105/20B29D11/00442G02B1/041G02C7/12C08J2375/04B29K2075/00B29K2995/0034B29D11/00644G02B1/04C08G18/022C07D331/02C08L75/04C08L81/00B29C45/14G02B3/0012G02B3/0062C08G18/753C08G18/758G02C2202/16
Inventor TSUKADA, HIDETAKAGOTO, KENICHINAKAGAWA, TOSHIHIKOYAMASAKI, SATOSHIKAWAGUCHI, MASARU
Owner MITSUI CHEM INC
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