Abstract: Small quantities of pentachlorothiophenol and/or the metal salt thereof of pentachlorothiophenol inhibits premature vulcanization in an EPDM composition containing carbon black.

Abstract: Unsaturated molding compositions containing an unsaturated polyester resin, a polymerizable monomer, an epihalohydrin polymer, and optionally, reinforcing fibers, catalyst, thermoplastic polymers, thickening agent and fillers. The epihalohydrin polymer improves the toughness of the molding composition.

Abstract: Improved weather resistant products such as building siding, shutters, roof vents and the like, are made by coextruding or laminating a plasticized vinyl chloride capstock with a substrate of rigid vinyl chloride polymers, chlorinated vinyl chloride polymers, or acrylonitrile-butadiene-styrene polymers. The resulting composites are much improved over rigid PVC, chlorinated PVC, or ABS articles alone for retention of appearance and retention of impact on aging.

Abstract: In the extractive distillation of C.sub.5 hydrocarbons with different degrees of unsaturated using acetonitrile, an increase in the selectivity of acetonitrile is obtained when also using with acetonitrile small amounts of at least one compound selected from the group consisting of dimethylformamide, dimethylsulfoxide, morpholine, furfural, N-methylpyrrolidone, 3-methoxypropionitrile, gamma-butyrolactone, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, ethylene glycol monoethyl ether, and diethylene glycol monoethyl ether.

Abstract: Asphalt cement compositions are produced which contain an EPDM or EPM elastomer. The elastomer is premixed with a high DBP absorption value reinforcing carbon black to form a bound rubber masterbatch. The specific gravity of the masterbatch is substantially equivalent to the specific gravity of the asphalt cement or asphalt.