Monodispersion cubic light calcium carbonate and its preparation method and application
A technology of light calcium carbonate and cubes, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of large particle size, which affects the application of light calcium carbonate, to improve whiteness and opacity, and excellent printing adaptability , Improve the effect of absorption performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0020] Put 7.2 kilograms of acrylic acid and 80 kilograms of polyethylene glycol with a molecular weight of 800 into the reactor, and carry out esterification reaction at 85 ° C. When the amount of water generated reaches 1.8 kilograms, the reaction ends, and polyethylene glycol acrylate is obtained. 85 kg.
[0021] 20 kilograms of acrylic acid and the above-mentioned 85 kilograms of polyethylene glycol acrylate are dissolved in 100 kilograms of water, and then 20 kilograms of ammonium persulfate solution with a weight concentration of 5% is added dropwise at 60 ° C, and the time for adding ammonium persulfate solution is 3 Hours, after the ammonium persulfate solution was added dropwise, the reaction was continued at 90° C. for 1 hour to obtain 220 kg of additive solution.
[0022] Adding 20 kilograms of above-mentioned additive solution to 20 tons of weight concentration is 10% Ca(OH) 2 In the water slurry, CO was introduced 2 The gas with a volume concentration of 28% is ...
Embodiment 2
[0024] The preparation method of polyethylene glycol acrylate is with embodiment 1.
[0025] Dissolve 10 kilograms of acrylic acid and 35 kilograms of polyethylene glycol acrylate in 50 kilograms of water, then add 11 kilograms of ammonium persulfate solution with a weight concentration of 5% at 70 ° C, and add the ammonium persulfate solution for 5 hours After the ammonium persulfate solution was added dropwise, the reaction was continued at 90° C. for 0.5 h to obtain 102 kg of additive solution.
[0026] It is 16% Ca(OH) that 12 kilograms of above-mentioned additive solutions are added to 15 tons of weight concentration 2 In the water slurry, CO was introduced 2 The gas with a volume concentration of 99% is carbonized at a temperature of 50°C until the pH is 6.9, and the carbonization is completed to obtain a monodisperse cubic light calcium carbonate slurry, which contains 3.0 tons of monodisperse cubic light calcium carbonate, and the particle size is If it is less than ...
Embodiment 3
[0028] Put 7.2 kilograms of acrylic acid and 40 kilograms of polyethylene glycol with a molecular weight of 400 into the reactor, and carry out esterification reaction at 80 ° C. When the amount of water generated reaches 1.8 kilograms, the reaction ends, and polyethylene glycol acrylate is obtained. 46 kg.
[0029] 2 kg of acrylic acid and the above-mentioned 40 kg of polyethylene glycol acrylate are dissolved in 50 kg of water, and then 10 kg of ammonium persulfate solution with a weight concentration of 7% is added dropwise at 65 ° C, and the ammonium persulfate solution is added dropwise for 4 Hours, after the ammonium persulfate solution was added dropwise, the reaction was continued at 90° C. for 1 hour to obtain 100 kg of additive solution.
[0030] Add 8 kilograms of above-mentioned additive solutions to 20 tons of weight concentration and be 10% Ca(OH) 2 In the water slurry, CO was introduced 2 The gas with a volume concentration of 99% is carbonized at a temperatur...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More