The performance of bentonite and its effect used in casting coating as a suspending agent were studied. Meanwhile, points for attention in its application were pointed out.

The influence of organobentonite on sedimentation ratio, viscosity, thixotropy, film conductivity and micromorphology of the copper based conductive paint is investigated.

After suspension property experiment of SN, bta, binary suspension agent, a new suspension agent for alcohol-base foundry coating was obtained.