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: 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: Synthetic rubber compositions of improved green strength are prepared by incorporating in a synthetic rubber polymer, such as NBR or SBR, a small number of tertiary amine groups, and reacting this polymer with a halogen compound of general formula X--CH.sub.2 --R--CH.sub.2 --Y where X and Y represent chlorine, bromine or iodine, and R represents an aromatic group, and where X and Y are capable of forming quaternary ammonium salts with the tertiary amine groups on the polymer.

Abstract: An improved masterbatch of polymer, oil and carbon black is provided, and a process for the manufacture thereof, in which the polymer contains reactive groups and the masterbatch contains a crosslinking agent reactive with the reactive groups of the polymer in sufficient amount to form a low concentration of crosslinks in order to increase the strength of the polymer, the crosslinks being easily broken by the action of shear and/or heat and reformable thereafter, so that high levels of oil and carbon black can be incorporated into the masterbatch.

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.

Abstract: Synthetic rubber compositions of improved green strength are prepared by incorporating in a synthetic rubber polymer, such as NBR or SBR, a small number of tertiary amine groups, and reacting this polymer with a halogen compound containing two or more halogen atoms capable of forming quarternary ammonium salts with the tertiary amine groups on the polymer. 1,4-dibromobutene-2 is a suitable halogen compound. The tertiary amine groups can be incorporated by copolymerizing dimethylaminoethyl acrylate with the rubbery copolymer forming monomers.