Abstract: A quantity of insoluble solid particles is coated with a hydratable gelling agent to produce a composition comprised of a mass of discrete solid particles which is dry and flowable. The composition is made by placing a binder on the insoluble solid particles and then, while the binder is sticky, placing a hydratable gelling agent on the sticky binder to thereby form the composition. The hydratable gelling agent on the composition, upon contact with an aqueous liquid, operates to increase the viscosity of the aqueous liquid.

Abstract: This invention provides a process for coating particulate solids with a curable novolac resin without employing heat as a step of the process, comprising placing an epoxy resin which is curing on the particulate followed by placing a novolac resin capable of being heat cured on the epoxy resin before curing of the epoxy resin is complete.

Abstract: A capsule having a reactive chemical enclosed in the hollow interior thereof, and at least one coating in direct contact with and surrounding the reactive chemical, wherein the coating is a heat-cured thermosetting synthetic resin. The capsule can also include a second coating which is in direct contact with and surrounds the heat-cured thermosetting synthetic resin. The reactive chemical is not reactive with, soluble in or a solvent for the coating, or coatings, which surround the reactive chemical in the hollow interior of the capsule. The coating material is not soluble in water, but is permeable to water.