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Fine Organics Limited

H Harald Lutzmann

Gerald W Miller

James D Idol

Seymour Baron

Thermoplastic compositions comprising polyacrylonitriles that contain greater than 90% acrylonitrile as monomer, or copolymers of such polyacrylonitriles with an olefinic unsaturated co-monomer, can be formed by the use of certain compatibilizers and/or thermal stabilizers. Other thermoplastic compositions comprising the high nitrile polyacrylonitriles can be obtained by melt blending the polyacrylonitriles with certain aromatic engineering thermoplastic polymers in the presence of compatibilizers and thermal stabilizers. All of the foregoing high nitrile compositions have been found to possess good optical and gas barrier properties, and good stress crack resistance.

Thermoplastic polyacrylonitrile compositions

Formed articles made from polyvinyl alcohol having an oxygen permeability of no more than about 1 cc mil/100 in.sup.2 24 hr atm. at 80% relative humidity, compositions suitable for use in manufacturing such articles and a process for manufacturing such articles by forming polyvinyl alcohol containing a non-hydroxyl plasticizer in a substantially water-free condition and cooling at a rate sufficiently slow to provide the enhanced impermeability, are disclosed.

Plasticized polyvinyl alcohol compositions, forming process and formed

The addition of small amounts of selected polyamides or polyesters to plasticized, melt extrudable polyvinyl alcohol homopolymer provides a composition with lower permeability to oxygen and other fixed gases.

Enhanced barrier compositions from polyvinyl alcohol

An antistatic polymer blend comprising a synthetic polymer and an antistatically effective amount of a compound of the formula: ##EQU1## wherein R is alkyl of 4 to 18 carbon atoms unsubstituted or substituted by halo or aryl.

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Cleveland, OH, United States of America

H Harald Lutzmann