Abstract: The present invention is a pneumatic tire of the tubeless type, embodying a layer of puncture sealant composition based on: A. a minor proportion of a low molecular weight elastomer (e.g., depolymerized natural rubber) in admixture with a tackifying or plasticizing substance (e.g., a resinous reaction product of a mineral oil purification residue with formaldehyde) and B. a major proportion of a high molecular weight elastomer (e.g., cis-polyisoprene); Containing a crosslinking agent (e.g., isopropyl titanate) in an amount sufficient to give a partial cure; and C. ground rubber from used tires in the amount of up to 5 percent by weight of the sealant composition.

Abstract: A process and reagent for the recovery of kerogen and oil from associated substrate solids and for producing pumpable liquid from high molecular weight, high viscosity crude oils in which a reagent comprising a mixture of trichloro-isocyanuric acid and a chlorine donor compound dispersed in a petroleum base solvent is mixed at ambient temperatures with the material to be treated, whereby the kerogens and oil materials are freed from solid substrate to provide a pumpable product from which the solvent may be recovered. The invention also provides a conditioning agent for use in the process comprising an intimate admixture of trichloro-isocyanuric acid and a chlorine donor compound dispersed in a petroleum base solvent.