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Synthesis of polyamide modified phenolic aldehyde resin

A technology of phenolic resin and polyamide, applied in the direction of aldehyde/ketone condensation polymer adhesives, adhesive types, adhesives, etc., can solve the problems that the refractive index affects the contrast and clarity of flat-panel displays, and achieve good application value, Good resistance to yellowing, easy to control the effect

Inactive Publication Date: 2017-05-31
鲍丕莹
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Accurately weigh 150g of polyamide-modified phenolic resin, 8g of n-hexanol, 0.1g of polymerization inhibitor p-hydroxyanisole, and 0.01g of catalyst butyl titanate, add them into a three-necked flask with a thermometer, raise the temperature to 65 degrees, and start Add 22g of diisocyanate IPDI dropwise, control the temperature at 75°C, and react for 5h. The content of NCO group was analyzed by infrared spectrometer, and when the peak of NCO completely disappeared, the heating reaction was stopped to obtain polyamide modified phenolic resin.

Embodiment 2

[0010] Accurately weigh 100g of polyamide-modified phenolic resin, 6g of n-hexanol, 0.1g of polymerization inhibitor p-hydroxyanisole, and 0.01g of catalyst butyl titanate, add them into a three-necked flask with a thermometer, raise the temperature to 65 degrees, and start Add 22g of diisocyanate IPDI dropwise, control the temperature at 70°C, and react for 3h. The content of NCO group was analyzed by infrared spectrometer, and when the peak of NCO completely disappeared, the heating reaction was stopped to obtain polyamide modified phenolic resin.

Embodiment 3

[0012] Accurately weigh 120g of polyamide-modified phenolic resin, 7g of n-hexanol, 0.1g of polymerization inhibitor p-hydroxyanisole, and 0.01g of catalyst butyl titanate, add them into a three-necked flask with a thermometer, raise the temperature to 65 degrees, and start Add 22g of diisocyanate IPDI dropwise, control the temperature at 73 degrees, and react for 4 hours. The content of NCO group was analyzed by infrared spectrometer, and when the peak of NCO completely disappeared, the heating reaction was stopped to obtain polyamide modified phenolic resin.

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PUM

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Abstract

The invention relates to synthesis of polyamide modified phenolic aldehyde resin. The technical scheme is as follows: accurately weighing 100 to 150 g of polyamide modified phenolic aldehyde resin, 6 to 8 g of hexyl alcohol, 0.1 g of a polymerization inhibitor, namely p-hydroxyphenylethyl methyl ether and 0.01 g of a catalyst, namely butyl titanate, adding the materials into a three-neck flask with a thermometer, increasing the temperature to be 65 DEG C, beginning to dropwise add 22 g of isophorone diisocyanate (IPDI), controlling the temperature to be 70 to 75 DEG C and conducting reaction for 3 to 5 hours. The NCO group content is analyzed by an infrared spectrometer, and heating reaction is stopped when the peak of NCO completely disappears to obtain the polyamide modified phenolic aldehyde resin.

Description

technical field [0001] The invention relates to the synthesis of a polyamide modified phenolic resin, which belongs to the field of synthetic chemistry. Background technique [0002] The surface protective layer and conductive layer of capacitive touch screen are mostly made of glass substrate, and its refractive index is about 1.52. Therefore, the refractive index of the bonding material is required to be as equal as possible, which can greatly reduce the refraction loss of light between the interfaces and improve the performance of the panel. The contrast and clarity of the display in brightly lit environments. At the same time, under harsh conditions such as ultraviolet radiation, humidity and heat aging, and thermal shock, optically transparent adhesives need to maintain the stability of important indicators such as high light transmittance and low yellowing. And the refractive index of traditional liquid optical transparent adhesive is generally below 1.50, and lower r...

Claims

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Application Information

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IPC IPC(8): C08G8/28C09J161/14
Inventor 鲍丕莹
Owner 鲍丕莹