CAL-BEN Calcium bentonite clay Cimbar Rheology Modifier/ Thickener >> Organoclay >> Bentonite Coatings CAL-BEN is a selectively mined calcium bentonite clay that is only available as a 200 mesh product. A calcium bentonite clay doesn’t have the swelling characteristics of a sodium bentonite (e.g., Suspengels), but they perform well in “feed bond”; as carriers for agricultural chemical; as thickeners or co-thickeners in mass compounds (e.g., joint compounds) and textured coatings; etc. CAL-BEN. Calcium Bentonite Selectively mined calcium bentonite, specially blended and processed for general industrial use. Can be base exchanged to fit a particular application Can be chemically treated to alter its properties Filler in coatings Paint Selectively mined calcium bentonite clay. Used as a thickener or co-thickener in textured coatings. Can be used as a filler in coatings.