A kind of coloring stable colored silicon dioxide particle and preparation method thereof
A silicon dioxide and stable coloring technology, which is applied in the direction of chemical instruments and methods, cosmetic preparations, skin care preparations, etc., can solve the problems of easy discoloration, bleeding, fading, etc., and achieve low production costs, stable performance, and conditions controllable effect
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Embodiment 1
[0028] Embodiment 1, coloring stable colored silica particle of the present invention and its preparation
[0029] The first step: inject 2m sulfuric acid solution with a concentration of 0.4M into the reactor 3 , then add 0.4L of hydroxyl silicone oil, stir and activate for 10min;
[0030] Step 2: Add a water glass solution with a modulus of 3.3 and a concentration of 0.4M to the reaction kettle for reaction. When the pH value of the system is 3, add 2L of Edible Blue No. 1, and stop adding when the pH value of the system is 6 Water glass solution, continue to stir until the material system is transformed into a gel;
[0031] Step 3: Press-filter the formed silica gel, wash the gel filter cake with water to remove salt and residual reaction aids, dry and pulverize the washed gel filter cake to obtain silica particles;
[0032] The fourth step: put 5 kg of silicon dioxide particles into the reaction tank, add 20 kg of allyl alcohol polyoxyalkyl ether aqueous solution with a ...
Embodiment 2
[0033] Example 2, Colored and stable colored silica particles of the present invention and their preparation
[0034] The first step: inject 3m sulfuric acid solution with a concentration of 0.6M into the reactor 3 , then add 1.8L of hydroxy silicone oil, stir and activate for 15min;
[0035]Step 2: Add a water glass solution with a modulus of 3.3 and a concentration of 0.8M to the reactor for reaction. When the pH value of the system is 4, add edible red No. 3 9L, and stop adding water when the pH value of the system is 7. Glass solution, continue to stir until the material system turns into a gel;
[0036] Step 3: Press-filter the formed silica gel, wash the gel filter cake with water to remove salt and residual reaction aids, dry and pulverize the washed gel filter cake to obtain silica particles;
[0037] The fourth step: put 5 kg of silicon dioxide particles into the reaction tank, add 30 kg of allyl alcohol polyoxyalkyl ether aqueous solution with a mass percentage con...
Embodiment 3
[0038] Example 3, Colored and stable colored silica particles of the present invention and their preparation
[0039] The first step: inject 2m sulfuric acid solution with a concentration of 0.8M into the reactor 3 , then add 0.8L of hydroxyl silicone oil, stir and activate for 15min;
[0040] Step 2: Add a water glass solution with a modulus of 3.3 and a concentration of 0.6M to the reactor for reaction. When the pH value of the system is 4, add edible yellow No. 5 4L, and stop adding water when the pH value of the system is 6. Glass solution, continue to stir until the material system turns into a gel;
[0041] Step 3: Press-filter the formed silica gel, wash the gel filter cake with water to remove salt and residual reaction aids, dry and pulverize the washed gel filter cake to obtain silica particles;
[0042] The fourth step: put 5 kg of silicon dioxide particles into the reaction tank, add 25 kg of allyl alcohol polyoxyalkyl ether aqueous solution with a concentration ...
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