Abstract: A homogeneous, clear liquid stabilizer suitable for use in a vinyl chloride polymer comprising a liquid mixture of metal soap stabilizer, for example, a mixture of a mixed barium/zinc soap stabilizer and solubilized metal perchlorate, for example, a barium perchlorate. The liquid stabilizer is formed by combining a solubilized metal perchlorate and a liquid mixture of the metal soap stabilizer.

Abstract: An organotin stabilizer mixture comprising: (a) monoalkyltin mercaptoalcohol (b) a monoalkyltin mercaptoacid ester; and (c) a monoalkyltin sulfide provides improved early color, lubricity, and weatherability to rigid vinyl polymer formulations. The formulation may also contain a monoalkyltin mercaptoalcohol ester as an optional component.

Abstract: Production of lower molecular weight poly(ethylene oxide) by controlled degradation of higher molecular weight poly(ethylene oxide) initiated by a free radical source in contact with oxygen.

Abstract: Polymerization of vinyl chloride monomer, by either suspension or emulsion polymerization, optionally in the presence of a monoethylenically unsaturated comonomer, is carried out in the presence of a mixture of calcium and zinc acrylate. The presence of the calcium and zinc acrylate yields a more thermally stable product and reduces the amount of polymer scale formation during polymerization. A further improvement in thermal stability is achieved by conducting the polymerization with the added presence of an epoxy compound containing a reactive vinyl or allyl group.

Abstract: A rotary air compressor system of the screw type having an intake valve designed to have a closed condition at start-up, and having intake valve controls for effecting an initial lubrication and cooling of the compressor at start-up and a reduced strain on the motor.

Abstract: A one-step process is disclosed for the emulsion polymerzation of vinyl chloride, optionally in the presence of copolymerizable comonomers, using a water-soluble initiator or initiator system and a mixed emulsifier of: (1) at least one C.sub.12 -C.sub.18 straight chain alkyl or alkenyl surfactant, such as sodium lauryl sulfate; (2) at least one C.sub.14 -C.sub.20 straight chain alkyl or alkenyl alcohol, such as stearyl alcohol; and (3) at least one C.sub.5 -C.sub.8 straight alkyl chain sulfosuccinate emulsifier; such as, sodium diamyl sulfosuccinate and sodium dihexyl sulfosuccinate. The presence of the sulfosuccinate emulsifier allows the reaction to be run at lower temperatures than possible using just the other two components of the emulsifier with production of a polymer latex having good mechanical stability. The polymer product is useful as a plastisol or organosol resin.

Abstract: Polymerization of vinyl chloride monomer, by either suspension or emulsion polymerization, optionally in the presence of a monoethylenically unsaturated comonomer, is carried out in the presence of a mixture of calcium and zinc acrylate. The presence of the calcium and zinc acrylate yields a more thermally stable product and reduces the amount of polymer scale formation during polymerization. A further improvement in thermal stability is achieved by conducting the polymerization with the added presence of an epoxy compound containing a reactive vinyl or allyl group.

Abstract: A one-step process for the emulsion polymerization of vinyl chloride using a water-soluble initiator and a prehomogenized aqueous emulsifier system of (1) a C.sub.12 -C.sub.18 straight chain alkyl or alkenyl surfactant and (2) a C.sub.16 -C.sub.20 straight chain alkyl or alkenyl alcohol and/or a straight chain saturated hydrocarbon having a carbon content of greater than 18 is disclosed. Suitable examples of straight chain surfactants include sodium lauryl sulfate and sodium oleate. Suitable alcohols include stearyl alcohol, cetyl alcohol and eicosanol. A suitable hydrocarbon is eicosane. The resulting homo- and copolymer latices have excellent mechanical stabilities, particle sizes generally larger than obtainable using only the mixed surfactant system without prehomogenization of the emulsifier system and good thermal stability.

Abstract: A one-step process for the emulsion polymerization of vinyl chloride using a water-soluble initiator and an aqueous emulsifier system of (1) a C.sub.12 -C.sub.18 straight chain alkyl or alkenyl phosphate surfactant and (2) a C.sub.12 -C.sub.20 straight chain alkyl or alkenyl alcohol and/or a straight chain saturated hydrocarbon having a carbon content of greater than 18 is disclosed. One suitable example of a straight chain phosphate surfactant is sodium lauryl phosphate. Suitable alcohols include stearyl alcohol, cetyl alcohol and eicosanol. A suitable hydrocarbon is eicosane. The resulting homo- and copolymer latices can be used in plastisols and organosols.