Bismuth oxychloride
Bismuth oxychloride is a naturally occurring mineral that is commonly used as a pearlescent pigment in cosmetics and personal care products. Spray drying is a technique that has been investigated for the production of bismuth oxychloride powder, offering advantages such as improved handling, stability, and dispersion properties.
The areas of focus in spray drying of bismuth oxychloride include optimizing the process parameters, such as the inlet and outlet temperatures, atomizer type, and feed rate, to achieve the desired particle size, morphology, and color characteristics of the powder. Additionally, research has been conducted to evaluate the impact of different additives, binders, and dispersing agents on the physical and chemical properties of the powder, such as its reflectivity, opacity, and adherence.
Furthermore, spray drying has been explored as a method for producing bismuth oxychloride particles with controlled porosity or surface modifications, which can enhance their functionality in cosmetic formulations. These particles can be used in various cosmetic applications, such as foundations, blushes, and eyeshadows, to provide a soft-focus effect, improve skin coverage, and enhance the overall appearance.
Overall, spray drying of bismuth oxychloride offers a promising approach for improving the performance and functionality of this pearlescent pigment in cosmetics and personal care products, providing enhanced visual effects and user experience.
Please see the application note for starting paramters, formulations and some results.
