Bentonite is a highly good thicknener due to its suspending feature in water based paints and coatings, and thickening feature in pigments and filling materials. It has an ecellent thixotropy in reducing collapsing and dripping. Bentonites provdes low cuting viscosity and prevent collapse.
Some inks do not dry fast during printing process and cause staining. Starch which is waited in white bentonite suspension is commonly used in solving this problem.