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Silicone-modified OCA optical adhesive, optical adhesive tape, and preparation methods thereof

A technology of silicone and optical glue, applied in the field of OCA optical glue, can solve the problems of limited performance improvement of temperature resistance and humidity resistance, and achieve the effect of good initial adhesion, good high temperature and high humidity resistance, and low modulus

Inactive Publication Date: 2018-11-06
GUANGDONG DONGLI NEW MATERIALS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent still uses the traditional acrylate system, which has limited improvement in temperature and humidity resistance.

Method used

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  • Silicone-modified OCA optical adhesive, optical adhesive tape, and preparation methods thereof
  • Silicone-modified OCA optical adhesive, optical adhesive tape, and preparation methods thereof
  • Silicone-modified OCA optical adhesive, optical adhesive tape, and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of organosilicon modified OCA optical adhesive and the optical adhesive tape that has applied this organosilicon modified OCA optical adhesive, and its preparation process is as follows:

[0026] 1) Synthesis of acrylic acid-2-ethyl-1-dodecyl monomer

[0027] 140 parts of 2-ethyl-1-dodecanol and 45 parts of acrylic acid are dissolved in 200 parts of chloroform, and 15 parts of 4-dimethylaminopyridine and 15 parts of 1-( 3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 50° C., and the reaction was carried out for 95 hours to prepare the 2-ethyl-1-dodecyl acrylic acid monomer of Example 1.

[0028] 2) Synthesis of Silicone Modified OCA Optical Adhesive

[0029] According to the mass parts of raw materials, 80 parts of 2-ethyl-1-dodecyl acrylate, 9 parts of N-hydroxyethyl acrylamide, 35 parts of biphenylmethanol acrylate, and 9 parts of polyester-modified acrylic acid Mix functional group-modified polydimethylsiloxane, 0.01...

Embodiment 2

[0033] A kind of organosilicon modified OCA optical adhesive and the optical adhesive tape that has applied this organosilicon modified OCA optical adhesive, and its preparation process is as follows:

[0034] 1) Synthesis of acrylic acid-2-ethyl-1-dodecyl monomer

[0035] 120 parts of 2-ethyl-1-dodecanol and 40 parts of acrylic acid are dissolved in 160 parts of chloroform in parts by mass of raw materials, 12 parts of 4-dimethylaminopyridine and 12 parts of 1-( 3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 45°C, and the reaction was carried out for 70 hours to prepare the 2-ethyl-1-dodecyl acrylic acid monomer of Example 2.

[0036] 2) Synthesis of Silicone Modified OCA Optical Adhesive

[0037] According to the mass parts of raw materials, 70 parts of 2-ethyl-1-dodecyl acrylate, 6 parts of N-hydroxyethyl acrylamide, 10 parts of biphenylmethanol acrylate, and 7 parts of polyester-modified acrylic acid Functional group-modified ...

Embodiment 3

[0041] A kind of organosilicon modified OCA optical adhesive and the optical adhesive tape that has applied this organosilicon modified OCA optical adhesive, and its preparation process is as follows:

[0042] 1) Synthesis of acrylic acid-2-ethyl-1-dodecyl monomer

[0043] Dissolve 80 parts of 2-ethyl-1-dodecanol and 40 parts of acrylic acid in 100 parts of chloroform, add 7 parts of 4-dimethylaminopyridine and 7 parts of 1-( 3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 40° C., and the reaction was carried out for 50 hours to prepare the 2-ethyl-1-dodecyl acrylic acid monomer of Example 3.

[0044] 2) Synthesis of Silicone Modified OCA Optical Adhesive

[0045] According to the mass parts of raw materials, 50 parts of 2-ethyl-1-dodecyl acrylate, 4 parts of N-hydroxyethyl acrylamide, 10 parts of biphenylmethanol acrylate, and 5 parts of polyester-modified acrylic acid Functional group-modified polydimethylsiloxane, 0.03 parts of ...

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Abstract

The invention discloses a silicone-modified OCA optical adhesive which utilizes compounding of 2-ethyl-1-dodecyl acrylate, polyester-modified acrylic functional group-containing modified polydimethylsiloxane and biphenyl methanol acrylate, to make characteristics of the high-temperature and high-humidity resistant monomer, the high-temperature resistant silicone monomer and the high-refractivity monomer be effectively synergized and perform excellent compatibility and adaptability; further, other raw material components are adjusted to achieve higher adaptability. Therefore, the OCA optical adhesive can participate in a polymerization reaction according to a controlled living polymerization (RAFT polymerization) method, and has the advantages of low modulus, good hydrophobic property, andgood initial adhesion performance; performances such as resistance to humidity, heat, impact and aging of the OCA optical adhesive are enhanced. The invention further discloses a preparation method ofthe silicone-modified OCA optical adhesive, an optical adhesive tape using the silicone-modified OCA optical adhesive, and a preparation method of the optical adhesive tape.

Description

technical field [0001] The invention relates to the field of polymer functional materials, in particular to an OCA optical adhesive. Background technique [0002] With the rapid development of the mobile phone electronics industry, the use of OCA optical glue used in LCD touch screens is increasing. The composition of the mobile phone screen can be roughly divided into three parts, namely, the protective glass, the touch screen, and the display screen. And these three parts need to be bonded, generally speaking, it needs to be bonded twice, one bonding between the protective glass and the touch screen, and another layer between the touch screen and the display screen. Full lamination technology is the mainstream development trend of high-end smartphone and tablet panel lamination. The panel and the touch screen are completely pasted together in a seamless manner, which can provide a better screen reflection image display effect. The screen isolates dust and water vapor, a...

Claims

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Application Information

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IPC IPC(8): C09J7/10C09J7/30C09J151/00C08F287/00C08F220/18C08F220/58
CPCC09J7/10C09J7/30C09J151/00C08F287/00C09J2203/318C09J2451/00C09J2301/414C09J2301/312C08F220/1812C08F220/58C08F220/1818
Inventor 梁瓒伦
Owner GUANGDONG DONGLI NEW MATERIALS SCI & TECH CO LTD
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