Abstract: The present invention relates to a process for the distillation of readily polymerizable ethylenically unsaturated compounds comprising subjecting such compounds to distillation conditions in the presence of nitroso methylaniline as a polymerization inhibitor and in the absence of oxygen (air) and sulfur.

Abstract: A process is disclosed for producing composite sheeting of polystyrene having a thin protective layer of vinylidene fluoride polymer. The process comprises joining a molten stream of each polymeric material in a single extruder discharge conduit such that there is produced a single molten stream having a reasonably well defined interface between the two types of polymeric material, and thereafter, passing the resulting single stream of material through a sheet-form extrusion die having its die lips generally aligned with the foregoing interface.

Abstract: The invention disclosed is for a method and apparatus for blow molding foam walled plastic using a quadrisectional mold. A parison of foamed plastic may be blow molded to assume the contour of the closed mold, after which the molded shape is severed into two portions and ejected. Desirably, cellular plastic is blow molded to form hot drink cups.

Abstract: A new polymer composition which is a terpolymer of styrene, an elastomer and SO.sub.2, and the process for the manufacture of such terpolymer. The terpolymer composition of the present invention is one comprised of 64 to 98% by weight styrene copolymerized with 1 to 12% by weight of an elastomer and 1 to 24% by weight SO.sub.2.

Abstract: A process is disclosed for producing composite sheeting of polystyrene having a thin protective layer of vinylidene fluoride polymer. The process comprises joining a molten stream of each polymeric material in a single extruder discharge conduit such that there is produced a single molten stream having a reasonably well defined interface between the two types of polymeric material, and thereafter, passing the resulting single stream of material through a sheet-form extrusion die having its die lips generally aligned with the foregoing interface.

Abstract: A process for the manufacture of composite sheeting having a layer of polystyrene and at least one layer of polycarbonate polymer firmly united thereto, comprising joining a molten stream of each of said polymeric materials in a conduit to form a single stratified stream of molten material conforming to the cross-section of said conduit and having a relatively sharply defined interface between said polymeric materials, and passing said stratified stream of molten material through a sheet-form extrusion die having its die lips generally aligned with said interface between the two polymeric materials.

Abstract: Condensed ring polycyclic aromatic beta-alcohols are produced by a process which includes initially reacting a cyclic ketone, such as cyclohexanone with a secondary amine to yield an enamine of the cyclic ketone. The enamine is thereafter reacted with an ethylenically unsaturated ketone, such as methyl vinyl ketone, to yield a condensed ring ketone such as octalone which is thereafter dehydrogenated, preferably with a copper chromite catalyst to yield a pure aromatic beta-alcohol such as beta-naphthol.

Abstract: The method for blow molding foam walled plastic using a quadrisectional mold. A parison of foamed plastic may be blow molded to assume the contour of the closed mold, after which the molded shape is severed into two portions and ejected. Desirably, cellular plastic is blow molded to form hot drink cups.

Abstract: A process for the manufacture of profiled products by extruding in a substantially non-expanded state an expandable styrene polymer composition through a die orifice having the desired profile and subsequently passing the extruded material through a sizing member wherein it expands to the desired profile and cross-section to produce an article having a porous inner cross-section and a solid, non-foamed outer layer and wherein the styrene polymer composition employed is one containing from about 0.2 to 1.0 parts by weight of an alkaline earth metal carbonate blowing agent and from about 0.2 to 1.0 parts by weight of an organic acid per 100 parts by weight of styrene polymer.