A kind of polysulfide maleimide optical resin and preparation method thereof

A technology of maleimide and dimethylmaleimide, applied to polythioether maleimide optical resin with high refractive index and high transparency and its preparation, polythioether maleimide In the field of optical resin and its preparation, it can solve the problems of little research on polyimide resin, achieve the effect of controllable product structure, increase refractive index, and improve mechanical properties

Active Publication Date: 2022-03-15
SHENZHEN POLYTECHNIC
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on polyimide resins that have three properties: colorless, transparent, high refractive index, and curable at medium and low temperatures.

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
  • A kind of polysulfide maleimide optical resin and preparation method thereof
  • A kind of polysulfide maleimide optical resin and preparation method thereof
  • A kind of polysulfide maleimide optical resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A polysulfide-eatel maleimide optical resin, which is prepared by the following steps:

[0045] The methyl maleic anhydride (10.5 mmol) of glacial acetic acid (50 mL) was added dropwise to Icevene (100 mL) solution containing 4,4'-diaminobenzol (DDS, 5 mmol), and stirred at room temperature for 1 h. The reaction mixture was then heated to reflux for 4 h, concentrated under reduced pressure and cooled to 200 ml of water. Filter the formed solids and use a 100 ml mass percent concentration of 3% NA 2 CO 3The solution was washed, then washed with deionized water, and 12 h was dried at 70 ° C in a vacuum oven to give a white solid, acetone recrystallization was recrystallized to give 4,4'-di amino diphenyl sulfur double methylimide. (DDS-BCI).

[0046] The mixed 4,4'-diaminophenyl sulfone-based double-methylbenyleimide monomer and dimercaramide sulfide are reacted, and the mephen solvent is dissolved, the initiator is added, stirred at 30 ° C. 4 hours. Among them, the initiator...

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
refractive indexaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to view more

Abstract

The invention provides a polythioether maleimide optical resin and a preparation method thereof. The molecular structural formula of the polythioether maleimide optical resin is shown in formula (1), and the preparation method uses methyl Maleic anhydride is the starting material to obtain the dimethylmaleimide monomer, and then through the mercapto-alkenyl click chemistry method, a mercapto group is introduced in the methyl bismaleimide monomer to obtain the polysulfide maleimide Imide optical resin. The double-horse type polyimide resin of the technical solution of the present invention has the advantages of medium and low temperature curing, colorless and transparent, high refractive index and high thermal stability, and can be used as an optical resin for LED packaging.

Description

Technical field [0001] The present invention belongs to the technical field of polymer material, and more particularly to a polysulfide maleimide optical resin and a preparation method thereof, in particular to a high refractive index high transparency polysulfide maleimide optical resin and Its preparation method. Background technique [0002] LED LEDs are well received as a new generation of solid light sources. Since the chip of the LED has a high refractive index (approximately 2.2), the refractive index difference between the package resin is large, resulting in a total reflection of the interface light, and the light extraction efficiency is not high. At present, the regeneration of the silicone package resin of the LED is only 1.4 to 1.5, and the refractive index of the chip is large, resulting in lower removal light efficiency, only 10% of the theoretical value. [0003] According to the Lorentz-Lorenz equation, the method of improving the polymer refractive index is main...

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 Patents(China)
IPC IPC(8): C08G75/045C08J5/18C08L81/02
CPCC08G75/045C08J5/18C08J2381/02
Inventor 罗超云左建东刘曌
Owner SHENZHEN POLYTECHNIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap