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Preparation method of microsphere friction type silicon dioxide colored particles for cosmetics

PendingCN121974361Aaggregation tightPhysical coloring methods are safeCosmetic preparationsToilet preparationsMicrospherePhysical chemistry
The invention discloses a preparation method of microsphere friction type silicon dioxide colored particles for cosmetics, which comprises the following steps: preparing silicon dioxide slurry by using a sodium silicate solution and a sulfuric acid solution as main and auxiliary additives, emulsifying pigment to obtain pigment slurry, and coloring the silicon dioxide particles by using the pigment slurry in an atomized spraying manner to obtain the microsphere friction type silicon dioxide colored particles. After pulpifying, pumping water into a special storage tank for storage in a vacuumizing manner, then repeating atomization coloring and vacuumizing operations for multiple times, and finally adopting centrifugal spray drying to obtain the colored silicon dioxide particles. According to the invention, pigment is added by adopting a physical method, pigment slurry can be effectively added into mesopores of silicon dioxide particles in combination with a vacuum slurrying process, and water in the pigment slurry is collected and recycled, so that zero-emission color liquid is obtained. The control of the particle size form adopts multi-layer treatment in chemical and physical modes, so that the particle form is mainly spherical, the formation of irregular particles is effectively reduced, and the method can be used in various friction type products.
Owner:SANMING AF SILICON MATERIAL CO LTD