Preparation method of waterproof styrene-acrylic emulsion for water-based gloss oil
A technology of water-based varnish and styrene-acrylic emulsion, applied in the direction of coating, wax coating, etc., can solve problems such as disadvantage and poor rheological properties of emulsion, and achieve high production efficiency, smooth film layer and good water drop effect. Effect
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Embodiment 1
[0038] Embodiment one: a kind of preparation method of water-based glazing oil waterproof styrene-acrylic emulsion, comprises the steps:
[0039] 1. Add 100g of alkali-soluble resin Joncryl 678, 30g of 28wt% ammonia water and 270g of deionized water into the reaction kettle respectively, stir and raise the temperature to 80°C, wait until Joncryl 678 is completely dissolved and cool down to room temperature, adjust the pH value to 8.0 with 28wt% ammonia water , make Joncryl 678 resin liquid, standby;
[0040] 2. Seed pre-reaction: Take 120g of the above-mentioned Joncryl 678 resin solution, 5g of styrene, 10g of butyl acrylate and 110g of deionized water into the reactor, stir evenly, and heat up to 80°C, add ammonium persulfate aqueous solution (0.3g persulfate Ammonium sulfate was added to 3mL deionized water), and the reaction was kept for 0.5h;
[0041] 3. After the above-mentioned insulation reaction ends, start to add dropwise the mixture of 44g styrene, 89g butyl acryla...
Embodiment 2
[0043] Embodiment two: a kind of preparation method of water-based glazing oil waterproof styrene-acrylic emulsion, comprises the steps:
[0044] 1. Add 100g of alkali-soluble resin Huamingtai 868H, 30g of 28wt% ammonia water and 270g of deionized water into the reaction kettle respectively, stir and raise the temperature to 80°C, after Huamingtai 868H is completely dissolved, cool down to room temperature, and adjust with 28wt% ammonia water When the pH value reaches 8.5, the 868H resin solution is prepared for subsequent use;
[0045] 2. Seed pre-reaction: Take 128g of the above-mentioned 868H resin solution, 3g of styrene, 7g of isooctyl acrylate, 4g of stearyl acrylate and 97g of deionized water into the reactor, stir evenly, and heat up to 80°C, add ammonium persulfate Aqueous solution (prepared by adding 0.3g of ammonium persulfate to 3mL of deionized water), keep warm for 0.5h;
[0046]3. After the above-mentioned insulation reaction finishes, start to add dropwise the...
Embodiment 3
[0048] Embodiment three: a kind of preparation method of water-based glazing oil waterproof styrene-acrylic emulsion, comprises the steps:
[0049] 1. Add 100g of alkali-soluble resin Hanwha S-120, 30g of 28wt% ammonia water and 270g of deionized water into the reaction kettle respectively, stir and raise the temperature to 80°C, wait until Hanwha S-120 is completely dissolved and lower it to room temperature, adjust with 28wt% ammonia water When the pH value reaches 9.0, the S-120 resin solution is prepared and set aside;
[0050] 2. Seed pre-reaction: Take 144g of the above-mentioned S-120 resin liquid, 4g of styrene, 7g of isooctyl acrylate, 4g of stearyl acrylate and 86g of deionized water into the reaction kettle, stir evenly, and raise the temperature to 80°C, add over Aqueous ammonium sulfate solution (prepared by adding 0.3g ammonium persulfate to 3mL deionized water), keep warm for 0.5h;
[0051] 3. After the above heat preservation reaction, start to drop the mixtur...
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