Antiskid polyurethane paint and its prepn
A technology of polyurethane coatings and raw materials, applied in the direction of polyurea/polyurethane coatings, coatings, etc., to achieve the effects of enhancing self-leveling performance, preventing slipping when walking, and strong adhesion
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Embodiment 1
[0027] The amount of raw materials is parts by weight
[0028] Toluene diisocyanate (TDI) 29.98
[0029] Polyether N210 25.2375
[0030] (Molecular weight is 1000, hydroxyl value=100±10KOHmg / g)
[0031] Acetone 40
[0032] Trimethylolpropane 4.71
[0033] Dibutyltin dilaurate 0.05
[0034] Antioxidant 0.02
[0035] Benzoyl chloride 0.0025
[0036] In a four-neck round bottom flask equipped with a stirrer, a heating platform, a thermometer, a reflux condenser and an inert gas introduction tube, add acetone and polyether N210 according to the required amount, and heat to 100°C for dehydration for 6 hours. Then add trimethylolpropane, control the temperature at 145°C, stir, keep for 6 hours to fully dehydrate, cool down to 55°C, then add antioxidant and benzoyl chloride, then add toluene diisocyanate (TDI), exotherm to 70 ℃, the mixed system should be colorless, transparent or light yellow at this time, keep it for 4 hours and then add dibutyltin dilaurate. Raise the...
Embodiment 2
[0040] The amount of raw materials is parts by weight
[0041] Toluene diisocyanate (TDI) 24.8
[0042] Polyether N210 21.1
[0043] (Molecular weight is 1000, hydroxyl value=100±10KOHmg / g)
[0044] Acetone 30.0
[0045] Butyl acetate 20.0
[0046] Trimethylolpropane 3.90
[0047] Dibutyltin dilaurate 0.1
[0048] Antioxidant 0.05
[0049] Benzoyl chloride 0.05
[0050] In a four-neck round bottom flask equipped with a stirrer, a heating platform, a thermometer, a reflux condenser and an inert gas introduction tube, add acetone and polyether N210 according to the required amount, and heat to 100°C for dehydration for 6 hours. Then add trimethylolpropane, control the temperature at 145°C, stir, keep for 6 hours to fully dehydrate, cool down to 55°C, then add antioxidant and benzoyl chloride, then add toluene diisocyanate (TDI), exotherm to 70 ℃, the mixed system should be colorless, transparent or light yellow at this time, keep it for 4 hours and then add dibutyl...
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