Abstract: A highly dispersed emulsion of an organosulfur compound is obtained by use of a coemulsification system of a surfactant, and an electrolyte, and a cosurfactant and optionally a hydrocarbon; such as a petroleum sulfonate with potassium chloride and hexyl alcohol. Conversion of organosulfur compounds into highly dispersed emulsions increases the reactivity of the organosulfur compound as a molecular weight modifier in an aqueous emulsion polymerization system and permits the efficient use of high molecular weight organosulfur compounds.

Abstract: A mechanical valve used to stop unwanted discharge of liquids less dense than water, principally oil, which may be present in waste water flows. The valve is closed by sinking of a float less dense than water but more dense than the liquid whose discharge is to be stopped. The float is surrounded by a housing. Variations in the location of holes in the housing determine the depth of liquid which is required before the valve will close. Simple glass or other containers may be converted to serve as grease traps by installing the valve which has its discharge outlet above the valve orifice.

Abstract: Iodine or organic iodides are effective in suspension polymerization systems as molecular weight regulators or modifiers. These modifiers are especially suited for the suspension ABS processes.

Abstract: Iodine or organic iodides are effective in suspension polymerization systems as molecular weight regulators or modifiers. These modifiers are especially suited for the suspension ABS processes.

Abstract: Unreacted monomer in the water phase resulting from a suspension polymerization is polymerized to form a latex, as by the addition of an initiator to the water phase, in continued presence of the organic phase, thus removing from the organic phase, and therefore from the product, unreacted monomer into the water phase and therein also polymerizing the so removed monomer. The latex so obtained is recycled to the system as at least a portion of the aqueous phase for an ensuing polymerizable formulation. The polymer in the recycled latex becomes incorporated in the polymer generated in said ensuing polymerization. The invention is especially suited to the suspension process for producing ABS type products, affording considerably improved and simplified separation of unreacted monomer from the polymer product and conversion of said unreacted monomer to additional polymer avoiding expensive monomer recovery systems.

Abstract: High impact plastic compositions are prepared by dissolving an unsaturated elastomer in a vinylidene group-containing monomer or monomers, polymerizing in a suspension polymerization system, and subsequently cross-linking the product in a hot-mixing step employing a peroxide.