Aqueous oil polish and preparation method thereof
A technology of water-based varnish and aqueous solution, which is applied in the direction of coating, etc., can solve the problems of high price, poor water resistance of film formation, etc., and achieve the effects of reducing production costs, strong water resistance, and high leveling grade
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Embodiment 1
[0056] Example 1: (comonomer content is 44%)
[0057] Get 70.2g styrene, 70.2g butyl methacrylate, 25.2g methyl methacrylate, 14.4g hydroxyethyl acrylate in a 250mL conical flask to obtain comonomer; get 1.2g ammonium persulfate, 0.8g sulfurous acid Sodium hydrogen was dissolved in 72g of water to obtain an aqueous initiator solution; 8g of polyethylene glycol monomethyl ether methacrylate with a molecular weight of 1000, 1.5g of sodium hydroxide, and 144g of water were placed in a 500mL three-necked flask, fully stirred until dissolved, and then Move the three-necked bottle to an 85°C water bath, and after the temperature in the reaction bottle is stabilized, add 15% by mass comonomer and 20% by mass initiator aqueous solution; after half an hour, add the remaining The comonomer and initiator aqueous solution are controlled to be added dropwise within 2 hours. After the dropwise addition, the temperature was raised to 90°C, and the reaction was kept for 2 hours, cooled to be...
Embodiment 2
[0059] Example 2: (comonomer content is 20%)
[0060] Take 31.2g styrene, 31.2g butyl acrylate, 11.2g methyl methacrylate, 6.4g hydroxyethyl acrylate in a 250mL conical flask to obtain a comonomer; dissolve 1.2g ammonium persulfate in 75g water to obtain an initiator Aqueous solution; put 4g of polyethylene glycol monomethyl ether methacrylate with a molecular weight of 1200, 0.8g of sodium hydroxide, and 150g of water in a 500mL three-necked flask, stir well until dissolved, and then move the three-necked flask to a water bath at 85°C In the reaction bottle, after the temperature in the reaction bottle is stabilized, 15% mass comonomer and 20% mass initiator aqueous solution are added thereto; half an hour later, the remaining comonomer and initiator aqueous solution are added dropwise at a uniform speed in the there-necked flask, Control the dropwise addition within 2 hours. After the dropwise addition, the temperature was raised to 90°C, and the reaction was kept for 2 hou...
Embodiment 3
[0062] Example 3: (comonomer content is 50%)
[0063] Get 78g styrene, 78g butyl methacrylate, 28g methyl methacrylate, 16g hydroxypropyl acrylate in 250mL Erlenmeyer flask to obtain comonomer; get 2.8g potassium persulfate dissolved in 62g water to obtain initiator aqueous solution; Put 8g of polyethylene glycol monomethyl ether methacrylate with a molecular weight of 1500, 2g of sodium bicarbonate, and 125g of water in a 500mL three-necked flask, stir well until dissolved, then move the three-necked flask to a water bath at 85°C, and wait for After the temperature in the reaction flask is stable, add 15% quality comonomer and 20% quality initiator aqueous solution therein; The dropwise addition was completed within hours. After the dropwise addition, the temperature was raised to 90°C, and the reaction was kept for 2 hours, cooled to below 30°C, and the material was filtered and discharged.
[0064] The leveling grade of the water-based varnish prepared in this example is ...
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