Having worked with zinc oxide for the last 10 years with success, we can assure you that it is a pig of an ingredient being both difficult to blend into a base and keep dispersed in said base. Being a strongly charged particle it tends to migrate towards its self and form big clumps at every available opportunity. It doesn’t take much before whoooooosh, it’s moved and attached its self to its neighbor to form another. You can easily see what will happen next. It’s chemical carnage.
The key to optimizing the UV performance and cosmetic appeal of the final product is to wet and disperse the Zinc Oxide particles, usually in the oil phase, prior to emulsification. This is a major step in the process, as it breaks apart large agglomerates which then may be stabilized by dispersants and/or the oil phase compatible with the coating.
No one understands working with Zinc Oxide better than the engineers at PerMix. As a result we make several different types of shearing mixers and shearing pumps that effectively and efficiently disperses the Zinc Oxide into the formulation with success. PerMix makes models for all production rates as well as units for the Lab / R&D.
The key to optimizing the UV performance and cosmetic appeal of the final product is to wet and disperse the Zinc Oxide particles, usually in the oil phase, prior to emulsification. This is a major step in the process, as it breaks apart large agglomerates which then may be stabilized by dispersants and/or the oil phase compatible with the coating.
No one understands working with Zinc Oxide better than the engineers at PerMix. As a result we make several different types of shearing mixers and shearing pumps that effectively and efficiently disperses the Zinc Oxide into the formulation with success. PerMix makes models for all production rates as well as units for the Lab / R&D.
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