Modified silica sol and its application
A sol and modification technology, applied in the field of modified silica sol, can solve problems such as unsatisfactory effects
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Embodiment 1
[0043] (1) Put 8.60g of methyl acrylate, 10.40g of diethylenetriamine, and methanol in a four-neck flask equipped with a mechanical stirrer and a thermometer, keep it at 30°C for 6h, distill off the solvent methanol under reduced pressure, and heat up to 100°C , and kept in this state for 3h, cooled to room temperature, added isopropanol (solvent) and allyl epoxy polyoxyethylene polyoxypropylene ether (m=40, n=0) 6.00g, and reacted at 90°C for 5h , after completion of the reaction, the isopropanol was removed by distillation under reduced pressure to obtain a light yellow transparent liquid (intermediate B-1), and the test data of its infrared spectrogram is as follows:
[0044] IR (tablet method): 3445.12 (s, υ-OH), 3330.54 (s, υ-NH 2 ) 2808.58 (s, υ-CH 2 -), 2854.30 (w, δ-CH 2 -), 1795.05 (s, υ-C=O), 1675.72, 925.09 (s, δ-CH=CH 2 ), 1329.96 (s, υCH 3 -), 1114.85 (s, υ–CH 2 -O-CH 2 -).
[0045] (2) Put 11.60g of intermediate B-1, 2.2g of triethoxysilane, and isopropano...
Embodiment 2
[0050] (1) Put 8.60g of methyl acrylate, 10.40g of diethylenetriamine, and methanol in a four-necked flask equipped with a mechanical stirrer and a thermometer, keep it at 60°C for 3h, distill off the solvent methanol under reduced pressure, and heat up to 100°C , and kept in this state for 3h, cooled to room temperature, added isopropanol (solvent) and allyl epoxy polyoxyethylene polyoxypropylene ether (m=20, n=15) 12.00g, reacted at 150°C for 2h , after completion of the reaction, the isopropanol was removed by distillation under reduced pressure to obtain a light yellow transparent liquid (intermediate B-2), and the test data of its infrared spectrogram is as follows:
[0051] IR (tablet method): 3449.95 (s, υ-OH), 3336.12 (s, υ-NH 2 ) 2809.31 (s, υ-CH 2 -), 2850.27 (w, δ-CH 2 -), 1789.96 (s, υ-C=O), 1672.58, 930.19 (s, δ-CH=CH 2 ), 1332.48 (s, υCH 3 -), 1109.87 (s, υ–CH 2 -O-CH 2 -).
[0052] (2) Put 14.20g of intermediate B-2, 2.2g of triethoxysilane, and isopropan...
Embodiment 3
[0057] (1) Place 9.60g of methyl methacrylate, 10.40g of diethylenetriamine, and methanol in a four-necked flask equipped with a mechanical stirrer and a thermometer, keep it at 40°C for 4h, remove the solvent methanol by distillation under reduced pressure, and heat up to 100°C, and keep in this state for 3h, cool to room temperature, add isopropanol (solvent) and allyl epoxy polyoxyethylene polyoxypropylene ether (m=40, n=25) 18.00g, at 100°C Reaction 3h, after completion of reaction, isopropanol is removed by distillation under reduced pressure, obtains light yellow transparent liquid (intermediate B-3), and the test data of its infrared spectrogram is as follows:
[0058] IR (tablet method): 3450.32 (s, υ-OH), 3328.37 (s, υ-NH2) 2811.37 (s, υ-CH 2 -), 2849.08 (w, δ-CH 2 -), 1799.37 (s, υ-C=O), 1665.73, 930.18 (s, δ-CH=CH 2 ), 1334.19 (s, υCH 3 -), 1111.47 (s, υ–CH 2 -O-CH 2 -).
[0059] (2) Put 16.60g of intermediate B-3, 2.2g of triethoxysilane, and isopropanol in a...
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