Unlock instant, AI-driven research and patent intelligence for your innovation.

High refractive index silicone resin and its preparation method and application

A silicone and resin technology, applied in the field of high-performance polymer manufacturing, can solve problems such as decreased adhesion, general temperature resistance, and low refractive index

Active Publication Date: 2017-05-10
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the silicone materials for LED packaging reported in patents are mainly divided into two categories, one is methyl silicone resin, which has good adhesion, but generally has general temperature resistance and low refractive index (about 1.43 ) defects, which belong to the lower class of LED packaging silicone materials, and the other is methyl phenyl silicone resin, although this type of material has a higher refractive index (about 1.50) and excellent temperature resistance , but with the increase of phenyl content, the rigidity of the material also increases correspondingly, resulting in a decrease in adhesion

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
  • High refractive index silicone resin and its preparation method and application
  • High refractive index silicone resin and its preparation method and application
  • High refractive index silicone resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] The preparation of embodiment 1 p-methoxyphenyltriethoxysilane

[0105]

[0106] Under the protection of argon, add 1.44 grams (0.06mol) of magnesium strips, 20.8 grams (0.1mol) of tetraethyl orthosilicate, a small amount of iodine and 100 milliliters of dry-treated toluene into a dry 250 milliliter three-neck flask, stir and slowly add 9.35 g (0.05 mol) of 4-bromoanisole and 20 ml of dry treated tetrahydrofuran mixture, heat slightly until the color of the system fades, react in an ice-water bath for 24 hours, remove the solvent after filtration with diatomaceous earth, and collect under reduced pressure at 80°C / 10 mba fraction 7.34 g, 54% yield. 1 H NMR (400MHz, CDCl3, δin ppm): 7.58-7.60 (d, 2H), 6.89-6.91 (d, 2H), 3.79-3.86 (m, 9H), 1.20-1.24 (t, 9H).

Embodiment 2

[0107] The preparation of embodiment 2 methyl vinyl silicone resin

[0108] Add 50 milliliters of water, 50 milliliters of concentrated hydrochloric acid and 30 milliliters of toluene into a clean 500 milliliter three-necked flask, and add 5.2 grams (0.025mol) of ethyl orthosilicate, 50.0 grams (0.25mol) of ) phenyltrimethoxysilane, 27.3 grams (0.15mol) methylphenyldimethoxysilane, 6.61 grams (0.05mol) methylvinyldimethoxysilane, 9.5 grams (0.05mol) vinyltriethyl A mixed solution of oxysilane and 20ml of toluene, the reaction temperature is controlled below 20°C, continue to react for 3h after the dropwise addition, then heat to 80°C for 3h, cool to room temperature, wash with water until neutral, the organic layer is washed with anhydrous Dry over sodium sulfate, remove toluene after filtration, heat up under reduced pressure to 150°C / 10mba to remove small molecule compounds, and obtain 25.5 g of methylphenylvinyl silicone resin with a refractive index of 1.544.

Embodiment 3

[0109] Embodiment 3 Preparation of p-methoxyphenylmethylphenylvinyl silicone resin

[0110] Add 25 milliliters of water, 25 milliliters of concentrated hydrochloric acid and 15 milliliters of toluene into a clean 250 milliliter three-necked flask, and add 5.4 grams (0.02 mol) of p-methoxyphenyltriethoxysilane dropwise through a constant pressure dropping funnel under vigorous stirring , 27.7 grams (0.14mol) of phenyltriethoxysilane, 19.5 grams (0.08mol) of diphenyldimethoxysilane, 10.0 grams (0.075mol) of methylvinyldimethoxysilane and 10 milliliters of toluene Mix the solution, control the reaction temperature below 20°C, continue the reaction for 3 hours after the dropwise addition, then heat to 80°C and continue the reaction for 3 hours, cool to room temperature, wash with water until neutral, dry the organic layer with anhydrous sodium sulfate, filter and remove Toluene was heated under reduced pressure to 150°C / 10mba to remove small molecular compounds, and 12.2 g of p-me...

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
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to organic silicon resin with high refractive index, a preparation method and an application thereof. Particularly, in the manufacturing process of the organic silicon resin, the organic silicon resin with high refractive index can be obtained by adding monomers shown in a formula I into a reaction system; in the formula, R1 and R2 are defined as the description in the specification. The organic silicon resin prepared by the invention is high in refractive index and can be used as an organic silicon adhesive in the field of LED (Light Emitting Diode) package.

Description

technical field [0001] The invention belongs to the field of high-performance polymer production, and in particular relates to a two-component high-refractive-index silicone resin material containing alkoxyphenyl groups, a preparation method and application thereof. Background technique [0002] Light-emitting diode (LED) is a kind of light-emitting element that can directly convert electrical energy into light energy. As a new type of high-efficiency solid-state light source, it has significant advantages such as long life, energy saving, and environmental protection. In recent years, with the rapid development of LED technology and the gradual improvement of luminous efficiency, the application market of LEDs has become more extensive. Especially in the context of increasing concerns about global energy shortages, the prospects of LEDs in the lighting market have attracted more attention. It is one of the most promising high-tech fields to replace traditional light sources...

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): C07F7/18C08G77/06
Inventor 房强刁屾金凯凯陈华袁超王佳佳童佳伟孙晶
Owner SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI