A UV curing adhesive
A technology of adhesives and ultraviolet light, applied in the direction of adhesives, adhesive types, modified epoxy resin adhesives, etc.
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Embodiment 1
[0071] Add 25.2 g of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, 2,6- 0.0324g of di-tert-butyl-p-cresol, and then dropwise add a mixed solution of 7.2g of acrylic acid and 2.59g of triphenylphosphine to it, drop it within 0.5h, and then pass in nitrogen, and control the entire reaction temperature at 85°C to 95°C , react for 7h, and obtain a colorless transparent or light yellow transparent product which is the main resin represented by formula (III).
[0072] Utilize nuclear magnetic resonance to analyze the host resin obtained in embodiment 1, obtain its proton nuclear magnetic resonance spectrum figure, as figure 1 shown.
Embodiment 2
[0074] Add 25.2 g of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, 2,6- 0.0368g of di-tert-butyl-p-cresol, then dropwise add a mixed solution of 11.6g of hydroxyethyl acrylate and 2.94g of triphenylphosphine, drop it within 0.5h, then feed nitrogen, and control the entire reaction temperature at 85°C At ~95°C, react for 7 hours to obtain a colorless, transparent or light yellow transparent product, which is the main resin represented by formula (IV).
[0075] Utilize nuclear magnetic resonance to analyze the host resin obtained in embodiment 2, obtain its proton nuclear magnetic resonance spectrum figure, as figure 2 shown.
Embodiment 3
[0077] Add 25.2 g of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, 2,6- Di-tert-butyl-p-cresol 0.0424g, then dropwise therein the mixed solution of cyclohexanone glycidyl alcohol 17.2g and triphenylphosphine 3.39g, dropwise in 0.5h, feed nitrogen again, and the whole reaction temperature is controlled at 85 ℃ ~ 95 ℃, react for 7 hours, to obtain a colorless transparent or light yellow transparent intermediate product.
[0078] Add all intermediate products, acrylic acid 21.6g, trifluoromethanesulfonic acid 1.944g, 2,6-di-tert-butyl p-cresol 0.0648 to a 500 ml four-necked flask equipped with a mechanical stirrer, condenser, nitrogen tube and thermometer g, 1.62 g of ethyl phosphite and 194.4 g of toluene were reacted under reflux at 115°C to 120°C. After 5 hours of reaction, 3.74 g of water was produced, and the reflux was continued for 1 hour. The amount of water did not change, and the reaction was terminated.
[0079] After the reaction, the reaction mixture wa...
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