A kind of emulsion type water purifying agent and preparation method thereof
A water clearing agent and emulsion type technology, applied in the field of emulsion type water clearing agent and its preparation, can solve the problems of secondary pollution, complex production process, difficult industrial production, etc., and achieve the effects of accelerated settlement, simple production process, and weakened strength
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[0027] The present invention also relates to a preparation method of emulsion type water clearing agent, comprising the following steps:
[0028] 1) Preparing a pre-emulsion: mixing the reaction components with part of the water and stirring for 30-50 minutes to prepare a pre-emulsion; wherein the part of the water accounts for 20%-80% of the total weight of the water;
[0029] 2) Heating reaction: Add 2% to 50% of the pre-emulsion and the remaining water into the reactor, pass nitrogen into the reactor to remove oxygen for 20 to 50 minutes, heat to 80 to 90°C under stirring, and react for 0.5 to 1h; then add the remaining pre-emulsion to the reactor dropwise at a constant speed within 3~4h, after the dropwise addition, continue to react at 80~90°C for 1~2 hours;
[0030] 3) Obtaining an emulsion-type water purifier: after the reaction, cool to room temperature, and filter the resulting emulsion to obtain the emulsion-type water purifier.
[0031] Further, in the step 1) of p...
Embodiment 1
[0033] Preparation of emulsion type water purifier Q-001
[0034] 1) Preparation of pre-emulsion: 16g of styrene and 32g of butyl acrylate are mutually dissolved as the oil phase; Base phenol polyoxyethylene ether OP-10, 0.8g glacial acetic acid and 0.6g ammonium persulfate were dissolved in 60g water as the water phase; the water phase and the oil phase were mixed and stirred at room temperature with a high-speed shear at a speed of 1500rpm for 30min , to obtain the pre-emulsion;
[0035] 2) Heating reaction: Add 80g of water and 5% pre-emulsion into a four-neck flask equipped with a stirrer, thermometer, condenser, and dropping funnel, fill with nitrogen to remove oxygen for 30min, then stir and heat to 80°C, and react for 30min After that, start to add the remaining pre-emulsion dropwise at a constant speed for 3 hours; after the dropwise addition, raise the temperature to 85°C, and then continue the heat preservation reaction for 1 hour;
[0036] 3) Obtain an emulsion-ty...
Embodiment 2
[0038] Preparation of emulsion type water purifier Q-002
[0039] 1) Preparation of pre-emulsion: 12g of methyl methacrylate, 5g of lauryl methacrylate, and 24g of butyl methacrylate are mutually dissolved as the oil phase; 4g of dimethyl diallyl ammonium chloride, 1.5g of Dodecyldimethylbenzyl ammonium chloride, 0.5g Tween-80, 1g glacial acetic acid and 0.4g azobisisobutyronitrile were dissolved in 60g water as the water phase; the water phase and the oil phase were mixed and used at room temperature High-speed shearing machine is stirred 40min with the speed of 1000rpm, obtains pre-emulsion;
[0040] 2) Heating reaction: Add 100g of water and 20% pre-emulsion into a four-neck flask equipped with a stirrer, thermometer, condenser, and dropping funnel, fill with nitrogen to remove oxygen for 20 minutes, then stir and heat to 85°C, and react for 30 minutes After that, start to add the remaining pre-emulsion dropwise at a constant speed for 3.5 hours; after the dropwise additio...
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