Optical resin and synthesis method thereof

A synthesis method and technology of optical resin, applied in chemical instruments and methods, organic chemistry, preparation of organic compounds, etc., can solve the problems that the refractive index affects the contrast and clarity of flat panel displays, etc., achieve good application value, simple reaction process, easily controlled effects

Inactive Publication Date: 2017-03-29
SHENZHEN DARBOND INTERFACE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the refractive index of traditional liquid optical transparent adhesive is generally below 1.50, and lower refractive index influences the contrast and definition of flat panel display in strong light environment; Therefore the present invention just provides a kind of more refractive index optical resin, refraction The ratio is 1.52-1.54, which has better yellowing resistance and is used to make higher-end liquid optically transparent adhesives, which has good application value

Method used

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  • Optical resin and synthesis method thereof
  • Optical resin and synthesis method thereof
  • Optical resin and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Accurately weigh 100g of epoxy-modified rosin ester, 6g of n-butanol, 0.1g of polymerization inhibitor p-hydroxyanisole, and 0.01g of catalyst dibutyltin dilaurate, add them to a three-necked flask with a thermometer, and heat up to 65 degrees , start to drop 22g of diisocyanate IPDI, control the temperature at 70-75 degrees, and react for 2.5h. The content of the NCO group was analyzed by an infrared spectrometer, and when the peak of the NCO completely disappeared, the heating reaction was stopped to obtain a rosin ester modified polyurethane acrylate resin.

Embodiment 2

[0031] Accurately weigh 100 g of epoxy-modified rosin ester, 4 g of isobutanol, 0.1 g of inhibitor p-hydroxyanisole, and 0.01 g of catalyst dibutyltin dilaurate, add them to a three-necked flask with a thermometer, and heat up to 65 degrees. Start to drop 25g of diisocyanate TDI, control the temperature at 70-75 degrees, and react for 2 hours. The content of the NCO group was analyzed by an infrared spectrometer, and when the peak of the NCO completely disappeared, the heating reaction was stopped to obtain a rosin ester modified polyurethane acrylate resin.

Embodiment 3

[0033] Accurately weigh 110g of epoxy-modified rosin ester, 10g of neopentyl alcohol, 0.1g of polymerization inhibitor p-hydroxyanisole, and 0.01g of catalyst dibutyltin dilaurate, add them to a three-necked flask with a thermometer, and heat up to 65 degrees , start to drop 30g of diisocyanate MDI, control the temperature at 70-75 degrees, and react for 3h. The content of the NCO group was analyzed by an infrared spectrometer, and when the peak of the NCO completely disappeared, the heating reaction was stopped to obtain a rosin ester modified polyurethane acrylate resin.

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Abstract

The invention provides an optical resin synthesis method, which comprises: adding 80-110 g of an epoxy-modified rosin ester, 4-10 g of a monohydric alcohol, 0.1 g of a polymerization inhibitor p-hydroxyanisole, and 0.01 g of a catalyst dibutyltin dilaurate to a three-necked flask having a thermometer, heating to a temperature of 65 DEG C, adding 18-32 g of diisocyanate in a dropwise manner, controlling the temperature at 70-75 DEG C, carrying out a reaction for 2-3 h, analyzing the NCO group content by using an infrared spectrometer, and stopping the heating reaction when the peak of NCO completely disappears so as to obtain the rosin ester modified polyurethane acrylate resin. According to the present invention, the obtained resin is the high-performance optical resin, has the refractive index of 1.52-1.54, has the good yellowing resistance, can be used for producing the high-end liquid-state optical transparent glue, avoids the disadvantages of low refractive index and poor yellowing resistance of the traditional liquid-state optical transparent glue, and is suitable for the whole adhesion process of the capacitive touch screen.

Description

technical field [0001] The invention relates to an optical resin and a synthesis method thereof, which has a relatively high refractive index and good yellowing resistance, can be used in liquid optical transparent adhesives, and belongs to the field of photocurable materials. Background technique [0002] With the continuous upgrading of flat panel display technology, touch screen as a new technology has been continuously applied to mobile phones, computers and other products, especially driven by the tide of mobile Internet, more and more flat panel display products use capacitive touch screen control 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 duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C269/02C07C271/24C07C271/28C07C271/20C09J4/02
Inventor 潘光君万炜涛陈田安
Owner SHENZHEN DARBOND INTERFACE MATERIALS
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