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Star-shaped polyacrylate OLED photosensitive resin and synthesis method thereof

A polyacrylate and synthetic method technology, applied in the field of OLED photosensitive resin, can solve the problems of poor heat resistance and solvent resistance, low solid content, low hardness, etc., and achieve improved workability, improved refractive index, and high transmission. rate effect

Pending Publication Date: 2021-10-29
湖北宜化新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the existing linear optical resins such as low solid content, low hardness, high viscosity, poor heat resistance and solvent resistance, the present invention provides a star-shaped polyacrylate photosensitive resin, and applies it to the field of OLED optical devices. Improving the Light Extraction Efficiency of OLED Devices

Method used

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  • Star-shaped polyacrylate OLED photosensitive resin and synthesis method thereof
  • Star-shaped polyacrylate OLED photosensitive resin and synthesis method thereof
  • Star-shaped polyacrylate OLED photosensitive resin and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A kind of synthesis of star-shaped polyacrylate OLED photosensitive resin, the raw material type and consumption of each component are as table 1 (acetone is used as solvent):

[0023] Table 1:

[0024]

[0025] Preparation process: Take 37g of trimethylolpropane acrylate, 55g of ethylthioethyl methacrylate, 7.5g of polyacrylate acrylate, 0.5g of azobisisobutyronitrile and 25g of acetone, and add them to the In the reaction kettle, under the protection of nitrogen, the temperature was slowly raised to 50°C. After the raw materials were completely dissolved, the temperature was raised to 70°C for polymerization, and then the temperature was lowered to 40°C to synthesize a star-shaped polyacrylate OLED photosensitive resin.

[0026] Properties of star polyacrylate OLED photosensitive resin: solid content, 82%; viscosity, 3800cP.

Embodiment 2

[0028] A kind of synthesis of star-shaped polyacrylate OLED photosensitive resin, the raw material type and consumption of each component are as table 2 (acetone is used as solvent):

[0029] Table 2:

[0030]

[0031]

[0032] Preparation process: Take 40g of ditrimethylolpropane acrylate, 52g of ethylthioethyl methacrylate, 7.8g of polyacrylate acrylate, 0.2g of azobisisobutyronitrile and 40g of acetone, and add them to the In the reaction kettle of the device, under the protection of nitrogen, the temperature is slowly raised to 50°C. After the raw materials are completely dissolved, the temperature is raised to 70°C for polymerization reaction, and then the temperature is lowered to 40°C to synthesize a star-shaped polyacrylate OLED photosensitive resin.

[0033] Properties of star-shaped polyacrylate OLED photosensitive resin: solid content, 73%; viscosity, 1300cP.

Embodiment 3

[0035] A kind of synthesis of star-shaped polyacrylate OLED photosensitive resin, the raw material type and consumption of each component are as table 3 (acetone is used as solvent):

[0036] table 3:

[0037]

[0038] Preparation process: Take 20g ditrimethylolpropane acrylate, 22g trimethylolpropane acrylate, 52g ethylthioethyl methacrylate, 5.5g polyacrylate acrylate, 0.5g azobisisobutyronitrile and 30g of acetone were added to the reaction kettle with a reflux device. Under the protection of nitrogen, the temperature was slowly raised to 50°C. Acrylic OLED photosensitive resin.

[0039] Properties of star polyacrylate OLED photosensitive resin: solid content, 75%; viscosity, 1700cP.

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Abstract

The invention discloses a star-shaped polyacrylate OLED photosensitive resin and a synthesis method thereof. The synthesis method of the star-shaped polyacrylate OLED photosensitive resin comprises the following steps: adding polyhydric alcohol polyacrylate, sulfur-containing polyacrylate, polyhydric alcohol polyacrylate and a free radical initiator into a reaction kettle according to a stoichiometric ratio, adding an organic solvent as a reaction solvent, carrying out heating to 65-80 DEG C under the protection of nitrogen, carrying out a polymerization reaction for 3-6 hours, and performing cooling and discharging to obtain the star-shaped polyacrylate OLED photosensitive resin. The obtained star-shaped polyacrylate OLED photosensitive resin has the characteristics of high solid content, low viscosity, high refractive index and light transmittance of a coating film, and the like, can be applied to the field of OLEDs, and improves the light extraction rate of OLED devices.

Description

technical field [0001] The invention relates to the field of OLED photosensitive resins, in particular to a preparation method of star-shaped polyacrylate OLED photosensitive resins. Background technique [0002] High performance, light weight, miniaturization and integration of optical devices have become a development trend. At present, inorganic photosensitive materials occupy an absolute dominant position in optical materials, and they have the characteristics of high strength, high stiffness, high hardness, high refractive index, high light transmittance and low dispersion. However, inorganic photosensitive materials still have some key problems that restrict their further development and application, such as high density, high brittleness, difficult processing and molding, high cost and difficulty in mass production. Compared with inorganic photosensitive materials, organic photosensitive resins are gradually replacing the leading position of inorganic materials and b...

Claims

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Application Information

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IPC IPC(8): C08F265/06C08F283/00C08F220/38C08F222/14C08F222/20C08F222/24
CPCC08F265/06C08F283/008C08F220/38C08F222/103C08F222/104C08F222/102
Inventor 宋爱华张刚张振华陈龙李腾飞秦长江马俊昌张月强瞿浩汪磊张诺诺陈然周昌林
Owner 湖北宜化新材料科技有限公司
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