Paints Raw Materials / Chemical Industry Resin-Thickener Import Export Offers

Interested in Thickener (NOT hardener!) Resins to make resins thicker. for work on an inclined plane and vertical walls, thick resins are required! When mixing fine stone chips with resins: polyurethane, polyester, epoxy resin, etc. "tenacity", "stickiness" (resin + chips) is very low. Doesn't stay vertical and rolls down. Is it possible to come up with something or are there already similar "Thickeners" for resins?