| abstract |
The invention discloses a kind of toothpaste preparation methods of colored silicon dioxide granule, it is characterised in that：Add 18m into reactor one 3 Sodium sulphate, then add the ethoxylated dodecyl alcohol of 6kg；Sodium silicate solution is added in into reactor one again, sulfuric acid solution is added after 2min, until reaction end pH value is 3；Carboxymethylcellulose sodium solution is added in into reactor two, then adds sulfuric acid solution, solution ph is adjusted to 6.5, adds potassium peroxydisulfate and sodium hydrogensulfite, the sodium carboxymethylcellulose of activation is made；It is finally 10 by weight by the sodium carboxymethylcellulose of activation and food grade colorant solution:1 ratio is added in reactor one, press filtration, is beaten filter cake 3 hours under 3000r/min, and re-dry crushes, and obtains colored silicon dioxide granule.Colored silicon dioxide granule prepared by the present invention can reduce the defoaming to toothpaste foaming agent, improve foaming abundancy degree and scrub mouthfeel. |