A kind of environment-friendly water-based nail polish and preparation method thereof
A nail polish, water-based technology, applied in manicure, pedicure, pharmaceutical formulations, etc., can solve problems such as polluting the environment and harming human health, and achieve the effects of simple preparation process, high gloss uniformity, and good hand feel
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[0037] A kind of preparation method of environmental protection water-based nail polish of the present invention comprises the following steps:
[0038] 1) First, add 4 to 18 parts of inert vinyl monomer, 9.48 to 13.35 parts of polymer polyol, 8.5 to 14 parts of diisocyanate compound, 0.8 to 2 parts of chain extender, 1.66 to 2.95 parts of Water chain extender, 0.15-0.3 parts of cross-linking agent and 0-0.095 parts of catalyst, the reaction temperature is 70-90°C, and the reaction time is 1-4 hours;
[0039] 2) Then, add 0.5-2 parts of vinyl monomers containing active hydrogen for capping, react for 0.5-1 hour, then cool the system temperature to 30-50°C, then add 1.3-3.2 parts of volatile base, and And react for 20-30 minutes, then add 60-100 parts of water, stir and disperse at high speed for 10-30 minutes, then raise the temperature to 70-90°C;
[0040] 3) Finally, at a temperature of 70-90°C, add an initiator solution (0.2-0.8 parts of initiator dissolved in 10-40 parts ...
Embodiment 1
[0044] 1) First, add 4 parts of methyl methacrylate, 9.9 parts of polycaprolactone diol, 8.5 parts of isophorone diisocyanate, 0.8 parts of 1,4-butanediol, 1.66 parts of dihydroxy Methylpropionic acid, 0.15 parts of trimethylolpropane and 0.01 part of catalyst dibutyltin dilaurate, the reaction temperature is 70 ° C, and the reaction time is 1 hour;
[0045] 2) Then, add 0.5 parts of hydroxyethyl acrylate for capping, react for 0.5 hours, then cool the system temperature to 30°C, then add 1.3 parts of ammonia water, neutralize and react for 20 minutes, then add 60 parts of water, stir and disperse at high speed 10 minutes, then heat up to 80°C;
[0046] 3) Finally, at a temperature of 80°C, add hydrogen peroxide solution (0.2 parts of initiator dissolved in 10 parts of water) to the reactor and drop it evenly into the reactor within 1 hour. After the addition is completed, continue to keep warm React for 1 hour to obtain an aqueous polyurethane emulsion;
[0047] 4) Add BYK-...
Embodiment 2
[0049] 1) First, add 4 parts of methyl acrylate and 5 parts of butyl acrylate, 11.5 parts of polycarbonate diol, 10.1 parts of hexamethylene diisocyanate, 1.3 parts of diethylene glycol chain extender into the dry reactor , 2.16 parts of dimethylolbutyric acid, 0.22 parts of glucose and 0.05 part of catalyst dibutyltin diacetate, the reaction temperature is 80 ° C, and the reaction time is 2.5 hours;
[0050]2) Then, add 1.2 parts of hydroxypropyl acrylate for capping, react for 0.6 hours, then cool the system temperature to 40°C, then add 1.9 parts of triethylamine, neutralize for 25 minutes, then add 75 parts of water, high-speed Stir and disperse for 20 minutes, then raise the temperature to 70°C;
[0051] 3) Finally, under the condition that the temperature is 70°C, add potassium persulfate solution (0.4 parts of initiator dissolved in 21 parts of water) to the reactor and drop it evenly into the reactor within 2 hours. After the dropwise addition, Continue the heat prese...
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