Abstract: Conjugated diolefin-vinyl nitrile compound rubbers are produced in powder form by treatment of the coagulated rubber with a conjugated diolefin-vinyl nitrile compound vinyl aromatic hydrocarbon polymer. Such powdered rubbers may be used wherever conjugated diolefin-vinyl nitrile compound rubbers are used.

Abstract: Thermoplastic polymeric laminates are prepared which have one layer of filled styrene polymer composition, and at least one layer of a dissimilar polymer selected from polyolefins such as polyethylene, polypropylene and polybutene, and nitrile group containing barrier polymers. The filled styrene polymer composition contains from 5 to 50 parts by weight filler, and is the product of mixing a styrene polymer masterbatch of impact polystyrene, filler, rubber and oil with polystyrene. The laminates can be used for thermoforming thin walled articles such as cups, plates, trays and containers.

Abstract: Synthetic filament is produced by spinning from the melt of an acrylonitrile-containing polymer, such filaments having high tenacity without the need for after-stretching.

Abstract: Thermoplastic polystyrene laminates are disclosed, one of the layers of which comprises a filled polystyrene composition containing from about 5 to about 50 of filler, such as calcium carbonate, clay, asbestos, etc. The filled polystyrene composition is prepared from a filled polystyrene masterbatch of impact polystyrene, filler, rubber and mineral oil, cut back by mixing with other polystyrene, either crystal or impact polystyrene. Laminates may be prepared by coextrusion. The filled polystyrene layer may be foamed. The laminates may be used for making formed articles such as cups, containers, trays, plates, sheets, etc.

Abstract: A process, and the product thereof, is provided for the manufacture of an interpolymer having a high resistance to chemical attack and a low gas and water vapour permeability, the interpolymer consisting essentially of an unsaturated nitrile, a monovinylidene aromatic compound and an alphaolefin. Also provided are foods, beverages and medicines contained in packages of the interpolymer.

Abstract: A filled thermoplastic composition is produced by first preparing a masterbatch of an impact polystyrene, a rubber, an oil and a filler and by secondly mixing the masterbatch with a polystyrene composition. The filled thermoplastic composition has acceptable properties.The present invention is directed to a process for the production of filled thermoplastic compositions. More particularly, it is directed to filled polystyrene compositions.For many years, the cost of polystyrene and impact polystyrene was not much higher than the cost of fillers conventionally used in the rubber industry. From the rubber industry, it has been well known that the cost of incorporating fillers into rubber is significant but is a necessary feature to achieve the required strength properties in the rubber compounds. Such incorporation of fillers into rubber requires the use of high shear mixing equipment. Plastics generally do not require the presence of filler to achieve good strength properties.