Abstract: Thermoplastic containers are filled with materials such as particulate solids or liquids under vacuum and hermetically sealed in rapid succession by an apparatus having a means for evacuating the container, means for filling and hermetically sealing the evacuated containers while retaining the vacuum.

Abstract: A panel having a double wall construction of a structural plastic material is provided with improved thermal insulative properties by (1) metallizing at least one surface of each wall of the panel with metal such as silver to provide a light reflective surface and to produce a partial barrier to atmospheric gases, (2) coating the metallized surface with a barrier plastic such as vinylidene chloride polymer, (3) evacuating the space enclosed by the walls of the panel, and (4) adding to the evacuated space a gas-absorbing material.

Abstract: Ultra high molecular weight, linear .alpha.-olefin polymers are produced without reactor fouling by polymerizing an .alpha.-olefin in the presence of Ziegler catalyst dispersed in an inert diluent and an amount of an inert gas not in excess of that which will dissolve in the inert liquid diluent.

Abstract: Non-conductive or poorly conductive resinous materials such as organic polymers are rendered highly conductive, e.g., volume resistivities as low as 10.sup.-.sup.3 ohm-cm, by including therein a finely divided, copper metal-containing solid and a salt such as zinc chloride. Such compositions can be fabricated into thin layers which are useful as electrodes or capacitors and into other articles wherein electroconductivity is required.

Abstract: Paper coatings exhibiting improved pick resistance at lower binder levels are provided by incorporating into a conventional binder a pigment comprising a copolymer of an ethylenically unsaturated hard monomer such as styrene and an ethylenically unsaturated amide such as acrylamide in the form of non-film forming discrete particles having an average particle diameter in the range from about 0.25 to about 1 micrometer.

Abstract: A method for the rapid rendering of transparent polymer articles astatic by treating the articles with dilute gaseous sulfur trioxide followed by treatment with base such as ammonia and water or dilute aqueous ammonia. The articles are rendered permanently astatic without affecting their transparency by this process.

Abstract: Pigmented detergents having improved shelf stability are provided by dispersing in liquid detergent a polymeric pigment made by an emulsion polymerization process comprising the steps of (1) emulsion polymerizing from about 0 to about 80 weight percent of total monomer in absence of emulsifier, (2) adding a nonionic surfactant, and (3) continuing emulsion polymerization of the remaining monomer charge.

Abstract: Fluid, stable compositions containing aqueous disperse systems of (1) anionizable material, e.g., an aqueous solution of an organic polymer having carboxylate functionality, and (2) a water-dispersible amphoteric polyelectrolyte, e.g., a copolymer of 2-aminoethyl methacrylate and methacrylic acid, reversibly coavervated by maintaining the pH of the composition at a value below the isoelectric point of the amphoteric polyelectrolyte and a value at which the disperse material contains anions. The resulting coacervate is readily redispersed by increasing the pH of the coacervate to a value above the isoelectric point of the polyelectrolyte. Such compositions are useful in warp sizing of yarns and in other coating applications.

Abstract: A light weight coating comprising a convenient binder such as starch and small colorless plastic, polymeric particles which remain discrete and retain a diameter of about one wavelength of visible light. The coating, prepared by dispersing the plastic, polymeric particles in an aqueous media containing the binder, may then be applied to a paper substrate in a conventional manner.

Abstract: Plastic substrate in the form of sheet, disk, or plate is advantageously converted to a shaped article by first surface sulfonating the plastic substrate and thereafter cold forming the plastic substrate to the desired shape. Surface sulfonation of the plastic substrate prior to cold forming eliminates the need for lubricating the plastic substrate or surfaces of the cold forming apparatus.

Abstract: Fluid, stable compositions containing aqueous disperse systems of anionizable material, e.g., a latex of an organic polymer having carboxylate functionality, and a water-dispersible amphoteric polyelectrolyte, e.g., a copolymer of 2-aminoethyl methacrylate and methacrylic acid, are coacervated by maintaining the pH of the composition at a value below the isoelectric point of the amphoteric polyelectrolyte and a value at which the disperse material contains anions.