Preparation method of light-control optical-grade pressure-sensitive adhesive tape
A pressure-sensitive adhesive tape, optical-grade technology, applied in the direction of pressure-sensitive film/sheet, adhesive, film/sheet-like adhesive, etc., can solve the problems of high toxicity, difficult rework, high rate of defective use, and low defective rate , easy to rework, excellent optical performance and weather resistance effect
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Embodiment 1
[0032] First, 100 g of 7-hydroxycoumarin was added to a 1000 mL three-necked flask, and then 70 g of methanol was added, placed in a low-temperature tank to cool to -20 °C, and stirred for 10 min. Add the mixed solution of 120 g of acryloyl chloride and 70 g of dichloromethane into the constant pressure funnel, and slowly add it dropwise (6-7 d / s). Organic solvents. Thermally dissolve 300 g of anhydrous ether and methanol in a mixed solvent with a mass ratio of 1:2, obtain the filtrate after suction filtration, recrystallize at -30~-20°C, filter with suction, and dry in vacuum at room temperature for 48 h to obtain acrylate Modified 7-hydroxycoumarin.
[0033] Methyl methacrylate 40 g, methyl acrylate 40 g, n-butyl acrylate 150 g, n-butyl methacrylate 30 g, isooctyl acrylate 50 g, cyclohexyl methacrylate 10 g, ethoxyethyl 20 g of oxyethyl acrylate, 10 g of acrylic acid, 10 g of hydroxyethyl acrylate, 55 g of acrylate-modified 7-hydroxycoumarin, 5 g of benzoyl peroxide, 5 g o...
Embodiment 2
[0037] First, 100 g of 7-hydroxycoumarin was added to a 1000 mL three-necked flask, and then 70 g of methanol was added, placed in a low-temperature tank to cool to -20 °C, and stirred for 10 min. Add the mixed solution of 120 g of methacryloyl chloride and 70 g of dichloromethane into the constant pressure funnel, add it dropwise slowly (6-7 d / s), continue to react at 25°C for 2 h after the dropwise addition, and spin off under reduced pressure residual organic solvents. Thermally dissolve 300 g of anhydrous ether and methanol in a mixed solvent with a mass ratio of 1:3, obtain the filtrate after suction filtration, recrystallize at -30~-20°C, suction filtration, and vacuum-dry at room temperature for 48 h to obtain methyl Acrylate-modified 7-hydroxycoumarin.
[0038] 40 g methyl methacrylate, 40 g ethyl acrylate, 150 g n-butyl acrylate, 30 g n-butyl methacrylate, 50 g isooctyl acrylate, 10 g isobornyl methacrylate, lauric acrylic acid 20 g methacrylate, 10 g methacrylate, ...
Embodiment 3
[0042] First, 90 g of 7-hydroxy-4-methylcoumarin was added to a 1000 mL three-necked flask, and then 60 g of methanol was added, placed in a low-temperature tank to cool to -20 °C, and stirred for 10 min. Add the mixed solution of 110 g of acryloyl chloride and 80 g of dichloromethane into the constant pressure funnel, add it dropwise slowly (6-7 d / s), continue to react at 20°C for 2 h after the dropwise addition, and spin off the remaining Organic solvents. Thermally dissolve 300 g of anhydrous ether and methanol in a mixed solvent with a mass ratio of 1:2, obtain the filtrate after suction filtration, recrystallize at -30~-20°C, filter with suction, and dry in vacuum at room temperature for 48 h to obtain acrylate Modified 7-hydroxy-4-methylcoumarin.
[0043] 40 g of methyl methacrylate, 40 g of methyl acrylate, 150 g of n-butyl acrylate, 30 g of n-propyl methacrylate, 50 g of stearic acid acrylate, 10 g of isobornyl acrylate, 3,3, 20 g of 5-trimethylcyclohexyl acrylate, 1...
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