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Optical pressure-sensitive resin and preparation method thereof

A technology of pressure-sensitive resins and resins, applied in adhesive types, ester copolymer adhesives, etc., can solve the problems of optical pressure-sensitive resins that do not have fast curing and high curing energy, and achieve excellent comprehensive performance and good adhesion , the effect of fast response speed

Active Publication Date: 2014-01-22
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the optical pressure-sensitive resin used in most liquid optical adhesives does not have the characteristics of fast curing, and generally requires a higher curing energy, generally 3000mj / cm 2 above

Method used

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  • Optical pressure-sensitive resin and preparation method thereof
  • Optical pressure-sensitive resin and preparation method thereof
  • Optical pressure-sensitive resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Accurately weigh 120g of isooctyl acrylate, 5g of N-hydroxyethylacrylamide (HEAA), 0.01g of polymerization inhibitor p-hydroxyanisole, 1g of n-dodecyl mercaptan (NDM), and 100g of ethyl acetate into In a three-necked flask with a thermometer, raise the temperature to 65 degrees, start to add dropwise a solution of 50 g of ethyl acetate containing 1 g of azobisisobutyronitrile (AIBN), control the temperature at 70-80 degrees, and react for 2.5 hours to obtain a polymer 1. The structural formula is shown in general formula (II), where x=1, y=15,

[0036] Add 6 g of ethyl isocyanate acrylate (AOI) to polymer one, control the temperature at 70-80 degrees, and react for 2.5 hours. Use an infrared spectrometer to analyze the content of NCO groups. When the peak of NCO disappears completely, stop the heating reaction to obtain polyacrylate modified polyurethane acrylate resin. The structural formula is shown in general formula (I), x=1, y=15 , Weight average molecular weight ...

Embodiment 2

[0039]Accurately weigh 100g of isooctyl acrylate, 2g of N-hydroxyethylacrylamide (HEAA), 0.06g of polymerization inhibitor p-hydroxyanisole, 1.2g of n-dodecyl mercaptan (NDM), and 100g of ethyl acetate Into a three-necked flask with a thermometer, raise the temperature to 65 degrees, start dropwise adding 50 g of ethyl acetate solution containing 1.2 g of azobisisobutyronitrile (AIBN), control the temperature at 70-80 degrees, and react for 2.5 hours to obtain Polymer 1, the structural formula is shown in general formula (II), wherein, x=1, y=30,

[0040] Add 2.6 g of ethyl isocyanate acrylate (AOI) to polymer one, control the temperature at 70-80 degrees, and react for 3 hours. Use an infrared spectrometer to analyze the NCO group content. When the NCO peak disappears completely, stop the heating reaction to obtain a polyacrylate modified polyurethane acrylate resin. The structural formula is shown in the general formula (I), where x=1, y= 30. The weight average molecular w...

Embodiment 3

[0043] Accurately weigh 140g of isooctyl acrylate, 11.2g of N-hydroxyethylacrylamide (HEAA), 0.08g of polymerization inhibitor p-hydroxyanisole, 1.3g of n-dodecyl mercaptan (NDM), and 100g of ethyl acetate Add it into a three-necked flask with a thermometer, raise the temperature to 65 degrees, start to dropwise add 50 g of ethyl acetate solution containing 1.9 g of azobisisobutyronitrile (AIBN), control the temperature at 70-80 degrees, react for 2 hours, and get Polymer 1, the structural formula is shown in general formula (II), wherein, x=4, y=30,

[0044] Add 14.1 g of ethyl isocyanate acrylate (AOI) to polymer one, control the temperature at 70-80 degrees, and react for 3 hours. Use an infrared spectrometer to analyze the NCO group content. When the NCO peak disappears completely, stop the heating reaction to obtain a polyacrylate modified polyurethane acrylate resin. The structural formula is shown in the general formula (I), where x=4, y= 30. The weight average molecu...

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Abstract

The invention relates to optical pressure-sensitive resin and a preparation method thereof. The optical pressure-sensitive resin is polyacrylate-modified polyurethane acrylate resin. The preparation method comprises the following steps of: adding iso-octyl acrylate, N-ethoxyl acrylamide, p-hydroxyanisole, 1-dodecanethiol and ethyl acetate to a three-neck flask, and increasing temperature to 65 DEG C; starting dropping an azoisobutyronitrile-containing ethyl acetate solution, controlling the temperature at 70-80 DEG C, and reacting for 2-3 hours to obtain a polymer I; adding isocyanate ethyl acrylate to the polymer I, controlling the temperature at 70-80 DEG C, and reacting for 2-3 hours; analyzing the content of an NCO group by using an infrared spectrometer; stopping heating reaction when the peak of NCO completely disappears. The optical pressure-sensitive resin prepared through the method disclosed by the invention is fast in curing, achieves the curing energy less than 1000 mj / cm<2> and has the advantages of excellent adhesive force on a base material, very good application value and suitability for the full-lamination process of a capacitive touch screen.

Description

technical field [0001] The invention relates to an optical pressure-sensitive resin and a preparation method thereof, belonging to the field of photocurable materials. Background technique [0002] With the continuous upgrading of flat panel display technology, touch screen, as a new technology, is continuously applied to various products such as mobile phones and computers. Especially driven by the tide of mobile Internet, more and more flat panel display products adopt capacitive touch technology. Capacitive touch technology has advantages over traditional resistive touch technology in terms of multi-touch design, gesture recognition, response speed, sensitivity, durability, and optical characteristics. According to the current production process, capacitive touch screens need to use an adhesive material to assemble each layer of transparent materials during manufacture, so as to eliminate Newton's rings and rainbow phenomena, reduce light scattering loss, and improve the...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/58C08F8/30C09J133/08
Inventor 潘光君王建斌陈田安解海华
Owner YANTAI DARBOND TECH
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