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A kind of vinyl polyether surfactant and its preparation method and application and LED encapsulation material

A vinyl polyether, surfactant technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., to achieve the effect of improving leveling performance, reducing surface tension, and improving leveling

Active Publication Date: 2022-04-19
北京科化新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the normal temperature leveling problem existing in the existing LED packaging silica gel, to provide a vinyl polyether surfactant and its preparation method and application and LED packaging material

Method used

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  • A kind of vinyl polyether surfactant and its preparation method and application and LED encapsulation material
  • A kind of vinyl polyether surfactant and its preparation method and application and LED encapsulation material
  • A kind of vinyl polyether surfactant and its preparation method and application and LED encapsulation material

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preparation example Construction

[0039] The preparation method of described vinyl polyether surfactant provided by the invention comprises the following steps:

[0040] (1) the compound shown in formula (4) is hydrolyzed under the presence of acidic catalyst, organic solvent and water, make R 5 , R 6 and R 7 At least one group in is hydrolyzed to a hydroxyl group to obtain a hydrolyzed product;

[0041]

[0042] (2) carry out ring-opening polymerization reaction with described hydrolyzate and oxyethane, propylene oxide;

[0043] Among them, R 1 is vinyl or hydrogen, R 5 , R 6 , R 7 each independently for C 1 -C 10 of alkyl or alkoxy groups.

[0044] In the above formula (4), R 5 , R6 , R 7 Specific examples include, but are not limited to; methyl, methoxy, ethyl, ethoxy, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, isopropyl, iso Butyl, sec-butyl, tert-butyl, isopentyl, neopentyl, tert-pentyl, isohexyl or cyclohexyl.

[0045] According to the present invention, from the viewpoint o...

Embodiment 1

[0065] (1) Add 1 mol of vinyltrimethoxysilane to 0.01 mol of hydrochloric acid (concentration: 36% by weight), 1 mol of DMAC (dimethylacetamide) solution, add 3 mol of deionized water dropwise at 40°C, after the dropwise addition is completed Raise the temperature to 50°C for 3 hours;

[0066] (2) Put the reaction product of step (1) and 20mol propylene oxide (PO) into the reactor, tighten the screw with a wrench, replace the air in the reactor with nitrogen three times, turn on the heating switch and slowly raise the temperature to 120°C . After the pressure in the kettle dropped to 0, keep the temperature and continue the reaction for 60 minutes. Then turn on the cold water, cool down to room temperature, add 10mol ethylene oxide (EO) and repeat the above replacement and heating process. Add 10mol propylene oxide (PO) to repeat the above replacement and heating process. After the reaction is finished, a small amount of acid is added to neutralize it, and it is purified fo...

Embodiment 2

[0068] (1) Add 1 mol of methylvinyldimethoxysilane to 0.01 mol of hydrochloric acid (concentration: 36% by weight), 1 mol of DMAC solution, add 2 mol of deionized water dropwise at 40°C, and raise the temperature to 55°C after the addition is complete Reaction 3h;

[0069] (2) Put the reaction product of step (1) and 20mol propylene oxide (PO) into the reactor, tighten the screw with a wrench, replace the air in the reactor with nitrogen three times, turn on the heating switch and slowly raise the temperature to 120°C . After the pressure in the kettle dropped to 0, keep the temperature and continue the reaction for 60 minutes. Then turn on the cold water, cool down to room temperature, add 10mol ethylene oxide (EO) and repeat the above replacement and heating process. Add 10mol propylene oxide (PO) to repeat the above replacement and heating process. After the reaction is finished, a small amount of acid is added to neutralize it, and it is purified for use to obtain vinyl...

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Abstract

The invention relates to the field of LED packaging, and discloses a vinyl polyether surfactant, a preparation method and application thereof, and an LED packaging material. The invention takes vinyl silane as main body, introduces polyether chain segment into its side group, and obtains vinyl polyether surfactant. When the vinyl polyether surfactant described in the present invention is used as a leveling agent in conjunction with LED encapsulation glue, the surface tension of the glue can be reduced, and the leveling performance can be significantly improved.

Description

technical field [0001] The invention relates to the field of LED packaging, in particular to a vinyl polyether surfactant, a preparation method and application thereof, and an LED packaging material. Background technique [0002] A light emitting diode (LED) is a solid-state semiconductor device that can directly convert electrical energy into light energy. LED lighting has the characteristics of low energy consumption, small size, and long life. LED lighting will replace traditional light sources such as incandescent lamps and fluorescent lamps and become the fourth-generation lighting source. The heart of the LED lighting lamp is a semiconductor chip (lamp bead). One end of the semiconductor chip is attached to the bracket as the negative pole, and the other end is connected to the positive pole of the power supply. The entire semiconductor chip is encapsulated by epoxy resin or silica gel. In recent years, the LED packaging industry has developed rapidly. Due to the weak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28C09J11/08C09J183/04
CPCC08G65/2639C09J11/08C09J183/04C08L2203/206C08L71/02
Inventor 王聪王锐张琛李海亮王善学卢绪奎
Owner 北京科化新材料科技有限公司
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