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A kind of hot-melt optical adhesive with ultraviolet blocking function and preparation method thereof

A technology of ultraviolet light and optical glue, which is applied in the field of optical glue, can solve problems such as the small range of blocking ultraviolet rays and accelerated aging, and achieve the effects of increasing crosslinking density, prolonging service life, and reducing damage

Active Publication Date: 2022-06-28
SHENZHEN GAOREN ELECTRONICS NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a hot-melt optical adhesive with ultraviolet blocking function and its preparation method, which solves the problem of accelerated aging in the small range of the optical adhesive used in displays

Method used

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  • A kind of hot-melt optical adhesive with ultraviolet blocking function and preparation method thereof
  • A kind of hot-melt optical adhesive with ultraviolet blocking function and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A preparation method of a hot-melt optical adhesive with ultraviolet blocking function, comprising the following steps:

[0031] (1) 2.4g of citric acid and 0.9g of 2-aminoethanethiol were mixed and dissolved in 100ml of deionized water, then vacuum was applied to remove water, then heated to 140° C. for 6h to react to obtain an intermediate product;

[0032] (2) Add 1g of intermediate product, 1.4g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, 0.005g of 4-dimethylaminopyridine to 30g of dichloromethane under ice bath In the solvent, after stirring and mixing for 2 hours, 0.5 g of methallyl alcohol was added dropwise, and the reaction was carried out at room temperature for 24 hours. After the reaction, the solvent was removed by a rotary evaporator to obtain a concentrated solution. The product obtained by drying was thiazolyl-2(1H )-pyridone-4-methacrylic acid methacrylate, weigh 1g of this product and 1g of 4-methacrylamidosalicylic acid and mix to ob...

Embodiment 2

[0036] A preparation method of a hot-melt optical adhesive with ultraviolet blocking function, comprising the following steps:

[0037] (1) 5g of citric acid and 1.8g of 2-aminoethanethiol were mixed and dissolved in 200ml of deionized water, then after applying a vacuum to remove water, heated to 142°C for 6h to react to obtain an intermediate product;

[0038] (2) 4.2g of intermediate product, 5.8g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, 0.04g of 4-dimethylaminopyridine were added to 50g of dichloride under ice bath In the methane solvent, after stirring and mixing for 2 hours, 2.1 g of methallyl alcohol was added dropwise, and the reaction was carried out at room temperature for 24 hours. After the reaction, the solvent was removed with a rotary evaporator to obtain a concentrated solution, and the product obtained by drying was thiazolyl-2( 1H)-pyridone-4-methacrylic acid methacrylate, weigh 3g of this product and 3g of 4-methacrylamidosalicylic acid ...

Embodiment 3

[0042] A preparation method of a hot-melt optical adhesive with ultraviolet blocking function, comprising the following steps:

[0043] (1) 2.6g of citric acid and 1g of 2-aminoethanethiol were mixed and dissolved in 100ml of deionized water, then vacuum was applied to remove water, then heated to 145°C for 5h to react to obtain an intermediate product;

[0044] (2) 2.2g of intermediate product, 2.8g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, 0.03g of 4-dimethylaminopyridine were added to 50g of dichloride under ice bath In the methane solvent, after stirring and mixing for 2h, 0.12g of methallyl alcohol was added dropwise, and the reaction was carried out at room temperature for 24h. After the reaction, the solvent was removed with a rotary evaporator to obtain a concentrated solution, and the product obtained by drying was thiazolyl-2( 1H)-pyridone-4-methacrylic acid methacrylate, weigh 1g of this product and 1g of 4-methacrylamidosalicylic acid and mix to...

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Abstract

The invention belongs to the technical field of optical glue, and in particular relates to a hot-melt optical glue with ultraviolet blocking function and a preparation method thereof, which comprises, in parts by weight: 100 parts of mixed copolymer; 1-5 parts of coupling agent; 0.2-0.6 parts of oxidizing agent; 0.1-0.6 parts of light stabilizer; 5-10 parts of water blocking agent; the mixed copolymer is composed of a weight ratio of 100:5-10:0.5-1:1-3:0.5-1 Ethylene-vinyl acetate copolymer, crosslinking agent, anti-ultraviolet agent, initiator and polymerization initiator are reacted to obtain; The anti-ultraviolet agent is obtained by 4-methacrylamide salicylic acid and thiazolyl-2 (1H) -Pyridone-4-formic acid methallyl ester, described thiazolyl-2(1H)-pyridone-4-formic acid methacryl ester is obtained by the reaction of citric acid and 2-aminoethanethiol to obtain an intermediate product and then passes through formic acid Obtained by esterification of allyl alcohol, the optical adhesive prepared by the present invention can shield the ultraviolet rays of 320nm-400nm in sunlight, thereby reducing the damage of most ultraviolet rays to the optical adhesive and prolonging its service life.

Description

technical field [0001] The invention belongs to the technical field of optical adhesives, and in particular relates to a hot-melt optical adhesive with ultraviolet blocking function and a preparation method thereof. Background technique [0002] Outdoor display screens are installed outdoors and are exposed to wind and sun all year round, especially the ultraviolet rays in the sun. In order to prolong the service life of the display screen, the display screen must be protected from ultraviolet radiation damage. None of the optical glues used have this capability. [0003] In the prior art, a few add ultraviolet absorbers to optical adhesives to improve the ultraviolet shielding effect of optical adhesives. The ultraviolet wavelength range in sunlight is below 400 nm, but most of them can only absorb ultraviolet rays with wavelengths of 300-380 nm. For optical adhesives The UV shielding effect still needs to be enhanced. At the same time, the UV absorber has the problem of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/06C08F255/02C08F212/36C08F220/58
CPCC09J151/06C08F255/026C08F212/36C08F220/58
Inventor 孙仕兵顾孔胜周双荣曾取勇贾中伟
Owner SHENZHEN GAOREN ELECTRONICS NEW MATERIAL