https://www.inno-oleo.com/fatty-acid/stearic-acids/rubber-grade-stearic-acid.html
A light-colored, waxy solid
It typically consists of C18 50%-60%
Widely used in the rubbers and tires
It is widely used as an activator, dispersing agent, plasticizer, and lubricant in rubber compound processing. It can aid the dispersion of pigments and fillers and improves processing since it acts as a stock lubricant and can facilitate mold flow, improve extrusions, and aid release. It can also be used as an external lubricant and viscosity depressant in PVC processing and the production of automobile tires and conveyor belts.