A kind of preparation technology of photoinitiator 185
A preparation process and technology for photoinitiators, applied in the preparation of organic compounds, carbon-based compounds, organic chemistry, etc., can solve the complex preparation process steps of photoinitiator 185, high safety and environmental protection pressure, transition layer and distillation residues Solid waste and other problems, to achieve the effect of improving safety and environmental protection pressure and reducing the cost of three wastes treatment
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Embodiment 1
[0036] High-temperature ketone production section: Pour 18g of zinc oxide (ZnO) and 2g of magnesium oxide (MgO) into 250ml of water, and add 200g of aluminum oxide (Al 2 o 3 ) was soaked for 2 hours to obtain a catalyst viscous slurry. The obtained catalyst slurry was dried at 120-130°C for 6 hours, then filled into a quartz tube, and calcined at 500°C for 8 hours under nitrogen to form the required 10% ZnO / MgO (9 / 1) in Al 2 o 3 Fixed bed catalytic reactor.
[0037] Liquify and mix 178g of p-tert-butylbenzoic acid and 96.8g of isobutyric acid (molar ratio 1:1.1) at 85°C to obtain a reaction mixture, pour it into the liquid heating layer of the hot silicone oil jacket located above the fixed-bed catalytic reactor Liquid funnel, use nitrogen as the carrier to drop the reaction mixture into the fixed bed catalytic reactor at 10ml / min, the nitrogen carrier flow rate is 20ml / min, the temperature of the hot silicone oil jacket during the dropping process is 80-90°C, the fixed bed...
Embodiment 2
[0040] High-temperature ketone production section: Pour 18g of zinc oxide (ZnO) and 2g of magnesium oxide (MgO) into 250ml of water, and add 200g of silicon dioxide (SiO 2 ) was soaked for 2 hours to obtain a catalyst viscous slurry. Dry the obtained catalyst slurry at 120-130°C for 6 hours and fill it into a quartz tube, then calcinate the quartz tube at 500°C under nitrogen for 8 hours to form the required 10% ZnO / MgO (9 / 1 ) on SiO 2 Fixed bed catalytic reactor.
[0041] 178g of p-tert-butylbenzoic acid and 105.6g of isobutyric acid (molar ratio 1:1.2) were liquefied and mixed at 85°C to obtain a reaction mixture, which was poured into the liquid in the hot silicone oil jacket located above the catalyst fixed bed reactor Adding funnel, using nitrogen as a carrier, drop the reaction mixture into the fixed bed catalytic reactor at 10ml / min, the nitrogen carrier flow rate is 20ml / min, the temperature of the hot silicone oil jacket during the dropping process is 80-90°C, the c...
Embodiment 3
[0044]High-temperature ketone production section: Pour 18g of zinc oxide (ZnO) and 2g of magnesium oxide (MgO) into 250ml of water, and add 200g of titanium dioxide (TiO 2 ) was soaked for 2 hours to obtain a catalyst viscous slurry. Dry the obtained catalyst slurry at 120-130°C for 6 hours and fill it into a quartz tube, then calcinate the quartz tube at 500°C under nitrogen for 8 hours to form the required 10% ZnO / MgO (9 / 1 ) on TiO 2 Fixed bed catalytic reactor.
[0045] 178g of p-tert-butylbenzoic acid and 114.4g of isobutyric acid (molar ratio 1:1.3) were liquefied and mixed at 85°C to obtain a reaction mixture, which was poured into the liquid of the hot silicone oil jacket located above the fixed-bed catalytic reactor. Liquid funnel, with nitrogen as the carrier, drop the reaction mixture through the fixed bed catalytic reactor at 10ml / min, the flow rate of nitrogen carrier is 20ml / min, the temperature of the hot silicone oil jacket during the dropping process is 80-90...
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