Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polymerizable composition for optical material containing thioepoxy compound, and preparation method of optical material

A technology of thioepoxy and optical materials, which is applied in optics, optical components, instruments, etc., can solve the problems of difficult hardening, low lens quality, and increased production costs, and achieve the effects of increasing yield and reducing production costs

Inactive Publication Date: 2014-09-03
KOC SOLUTION
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Thioepoxy-based lenses or thioepoxy-based lenses obtained by copolymerizing thioepoxy and thiourethane are difficult to harden when the polymeric composition is injected and polymerized, resulting in uneven polymerization. , causing pulsation or cloudiness, bubbles, etc., and the problem of low quality of the lens often occurs
This lack of hardening and the resulting uneven polymerization will reduce the yield of the lens and become a factor that increases the production cost
At present, one of the main concerns in the field of lenses is to reduce production costs, and the problems of unhardened and uneven polymerization in optical materials containing thioepoxy compounds urgently need to be improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymerizable composition for optical material containing thioepoxy compound, and preparation method of optical material

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0041] Synthesis Example 1: Bis(3-chloro-2-hydroxylpropyl)sulfide (bis(3-chloro-2-hydroxylpropyl)sulfide) Synthesis

[0042] After adding epichlorohydrin (5563g, 60.12mol) and methanol (2500g) to a 10-liter reactor, the reaction temperature was adjusted to 6°C, and when the reaction temperature reached 6°C, caustic soda (caustic soda) (50% aq, 5g). Add NaSH.xH to ​​another 10 L reactor 2 O (70%NaSH, 3660g, 45.75mol), methyl alcohol (1000g) and water (500g), after melting completely by stirring, slowly add hydrochloric acid dropwise, the hydrogen sulfide of generation is added to epichlorohydrin solution, obtained two ( 3-Chloro-2-hydroxypropyl) sulfide. The end point of the reaction is when the final product is confirmed by GC, epichlorohydrin and 3-chloro-2-hydroxy-propyl-1-thiol compound disappear completely, and bis(3-chloro-2-hydroxypropyl) sulfide is formed point in time. If there is 3-chloro-2-hydroxy-propyl-1-thiol, the relative content is calculated by GC, and t...

Synthetic example 2

[0043] Synthesis Example 2: Synthesis of Bis-(2,3-cyclothiopropyl)sulfide (pH2.5)

[0044] Bis(3-chloro-2-hydroxypropyl) sulfide (1072.48 g, 4.89 mol), 1300 g of toluene, and 800 g of methanol were added to a 10-liter reaction vessel, stirred, and the reaction temperature was adjusted to 30°C. When it reached 25°C, NaOH (50% aq., 783.08g, 9.78mol) was added dropwise, and the reaction temperature during the dropwise addition was carried out at 35-37°C, and the reaction was carried out while maintaining the temperature. Dropping is carried out within 1 hour, and then placed at 37°C for about 30 minutes to ferment. After the fermentation is over, add 2000g of toluene, stir for about 10 minutes, and carry out layering. The organic matter in the supernatant is washed twice with water. Remove moisture to the limit, add methanol 400g again to the organic solution with several layers, stir, add thiourea (thiourea) (1117.65g, 14.30mol) and anhydrous acetic acid (70g) at a reaction te...

Synthetic example 3

[0045] Synthesis Example 3: Synthesis of Bis-(2,3-cyclothiopropyl)sulfide (pH3.5)

[0046] Bis(3-chloro-2-hydroxypropyl) sulfide (1072.48 g, 4.89 mol), 1300 g of toluene, and 800 g of methanol were added to a 10-liter reaction vessel, stirred, and the reaction temperature was adjusted to 25°C. When it reached 25°C, NaOH (50% aq., 783.08g, 9.78mol) was added dropwise, and the reaction temperature during the dropwise addition was carried out at 35-37°C, and the reaction was carried out while maintaining the temperature. Dropping is carried out within 1 hour, and then placed at 37°C for about 30 minutes to ferment. After the fermentation is over, add 2000g of toluene, stir for about 10 minutes, and carry out layering. The organic matter in the supernatant is washed twice with water. Remove moisture to the limit, add methanol 400g again to the organic solution with several layers, stir, add thiourea (thiourea) (1117.65g, 14.30mol) and anhydrous acetic acid (70g) at a reaction te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thermal resistanceaaaaaaaaaa
Abbe numberaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a polymerizable composition for an optical material, and a preparation method of an optical material for obtaining a high quality thioepoxy-based optical material without uncuring or polymer imbalance. The present invention provides a preparation method of a thioepoxy-based optical material comprising the steps of: preparing a polymerizable composition containing a thioepoxy compound with a pH of 4-8; and template polymerizing the polymerizable composition. The thioepoxy-based optical material prepared according to the present invention can be widely used in various fields by replacing conventional optical materials.

Description

technical field [0001] The present invention relates to an optical material manufacturing method of a polymerized thioepoxy compound, in particular to a polymer composite and optical material for optical materials that can avoid unhardened or uneven polymerization and obtain high-quality thioepoxy based optical materials. The method of manufacture of the material. Background technique [0002] Korean Registered Patent No. 10-0681218 discloses a thioepoxy-based plastic lens. Thioepoxy-based lenses have high refractive index and high Abbe number, and have excellent performance, but the problem is that the lens is easy to break and is not easy to stain. In order to solve this problem, Korean Registered Patent No. 10-0417985, Japanese Laid-Open Patent No. 11-352302, etc. disclose the method of polymerizing two kinds of resins with different properties, that is, polymerizing thioepoxy compound and polythiol compound and polyisocyanate compound method. [0003] Thioepoxy-based ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/38C08L75/04G02B1/04G02B3/00
CPCG02B1/041C08G18/3876G02B1/04C08G18/3855C08L75/04C08L81/00C08L75/00C08L63/00C08G18/3874C08G2261/57G02B3/00
Inventor 张东奎卢守均金钟孝
Owner KOC SOLUTION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com