Composition used for optical material and optical material employing the same

A technology of optical materials and compositions, applied in optics, optical components, instruments, etc., can solve problems such as defects, loss, yellowing, etc.

Active Publication Date: 2012-08-15
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, these thiol-containing compositions may change color to yellow when polymerized and cured
Since it is used for optical materials, if it becomes discolored after curing, it will be defective and cause a huge loss

Method used

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  • Composition used for optical material and optical material employing the same
  • Composition used for optical material and optical material employing the same
  • Composition used for optical material and optical material employing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0119] Using 1,2-bis[(2-mercaptoethyl)sulfanyl]-3-mercaptopropane (compound A) with the total content of iron, chromium and nickel shown in Table 1, it was prepared according to the following production method 1 ΔYI was obtained by comparing the composition for optical materials and the optical material of the present invention with a blank sample. The results are summarized in Table 1.

Embodiment 4～6

[0121] Using bis(mercaptomethyl)-3,6,9-trithia-1,11-undecanedithiol (compound B) with the total content of iron, chromium and nickel shown in Table 1, according to the following The composition for optical materials and the optical material of the present invention were prepared in the production method 2, and compared with a blank sample, ΔYI was obtained. The results are summarized in Table 1.

Embodiment 7～9

[0123] Using 1,2-bis[(2-mercaptoethyl)sulfanyl]-3-mercaptopropane (compound A) with the total content of iron, chromium and nickel shown in Table 1, and iron and chromium shown in Table 1 , the pentaerythritol tetrakis (mercaptopropionate) ester (compound C) of the total content of nickel according to the following preparation method 3 to make the composition for optical material of the present invention and the optical material, compare with blank sample and obtain Δ YI . The results are summarized in Table 1.

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Abstract

The invention relates to a composition used for anoptical material and an optical material employing the same. Provided is a composition for an optical material, and the composition helps to predict, before the stage of polymerized solidification, changes of yellow, determine the good and the bad, and contains sulfuric polyester. A sulfuric polyester compound containing iron, chrome and nickle with the total amount of below 5.0ppm and the composition of a polyiso-(sulfur)-cyanate ester compound for the optical material are introduced to solve the problem of the invention. A compound of sulfuric polyester and episulfide for the optical material, containing iron, chrome and nickle with the total amount of below 5.0ppm is also introduced.

Description

technical field [0001] The present invention relates to compositions for optical materials, and more particularly, to compositions for optical materials suitable for plastic lenses, prisms, optical fibers, information recording substrates (substrates), and optical filters, especially plastic lenses. Furthermore, the present invention relates to the production of a polyurethane-based resin having good optical properties by polymerizing a polymerizable composition containing a polythiol compound and a polyiso(thio)cyanate compound, or a polythiol compound and an episulfide compound Methods of making optical materials. Background technique [0002] Compared with optical materials made of inorganic materials, optical materials made of resin are light, less prone to breakage, and can be dyed. Therefore, in recent years, it has spread rapidly in the field of optical materials such as spectacle lenses and camera lenses. [0003] Resins for optical materials are required to furthe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/72C08G18/32G02B1/04
Inventor 久宝峰树堀越裕
Owner MITSUBISHI GAS CHEM CO INC
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