Manganese stearate

Manganese stearate (CAS 3353-05-7) is a metal soap derived from stearic acid and manganese, supplied as a dry powder for use across coatings, polymer, and lubricant applications. It functions primarily as a drier, plasticizer, and surface modifier in industrial formulations. In alkyd and oxidative-cure coatings, it acts as a through-drying catalyst, promoting oxygen crosslinking within the paint film rather than only at the surface. This ensures a more uniform cure throughout the entire thickness of the coating layer.

Polymer processors incorporate it as an internal lubricant and processing aid in PVC and polyolefin compounds, reducing friction during extrusion and calendering. This improves the flow characteristics and surface finish of the final plastic products. In adhesive and sealant systems, it supports surface modification to improve substrate wetting and adhesion development. This makes it a versatile additive for manufacturers looking to enhance the bonding properties of their chemical formulations.

Metalworking lubricant formulators use it to enhance film formation and reduce metal-on-metal contact under boundary lubrication conditions. Its chemical stability makes it suitable for high-pressure industrial environments where performance is critical. Manganese stearate is typically supplied as a fine white to off-white powder. Technical grade is the standard commercial offering, with purity specifications commonly defined by metal content and acid value to ensure consistent performance.

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