Acrylonitrile polymer compositions and articles and methods for their preparation

Acrylonitrile polymer compositions and articles and methods for their preparation

Apparatus for manufacture of highly oriented polymeric containers

A method and apparatus for making highly oriented polymeric containers in which the method involves the deposition of a thermoplastic material onto an elastomeric form, fusing the material into a homogeneous mass and effecting temperature control and subsequent expansion of the form through the use of relatively incompressible fluids. The apparatus for practicing the process includes a support carrying the elastomeric form, a heating element and a fluid system for controlling the temperature of the material deposited upon the form and the expansion thereof.

Method for affixing end closures to container bodies using ultrasonically activated bonding agents

Separable molded article

Acrylonitrile polymer compositions and articles and methods for their preparation

Process of mixing a fugitive plasticizer, e.g., ethylene carbonate, with moist particulate polyacrylonitrile then removing the water enabling adjustment of the melt viscosity for extrusion of the polyacrylonitrile into film, fiber, pellets and shaped articles. Stretching and heating the extruded polyacrylonitrile film or fiber causes the fugitive plasticizer to exude and vaporize from the film or fiber, carrying with it any remaining acrylonitrile monomer. The resulting film or fiber exhibits substantially increased molecular weight, thus enhancing the tensile strength and barrier properties of the polyacrylonitrile product. The process also produces polyacrylonitrile foam products. A novel cross-linking agent for polyacrylonitrile, divinyloxybutane, is disclosed. Thermostabilizing agents for polyacrylonitrile, N-maleimides and stilbene derivatives, are also disclosed.

Uniaxially oriented polyvinyl chloride

Method and apparatus for manufacture of highly oriented polymeric containers

Separable molded article

An article of manufacture including a panel and a tear portion joined at an interface which forms a seal and a weakening line along which the tear is separable from the panel. The weakening line is formed by initially molding the panel or the strip portion to form one of the faces at the interface and using this preformed face as a mold surface to form the complementary sealing face of the other.

Verfahren zum herstellen vin bi-axial orientierten behaeltern aus polymerem material

Acrylnitrile polymerzusammensetzungen, gegenstände daraus und verfahren zu ihrer herstellung