Methacrylonitrile copolymers for use in - packaging food and pharmaceuticals

Packaging material for food and pharmaceuticals is based on copolymers, including graft copolymers, containing 70 - 98%, especially 78 - 98%, of methacrylonitrile and at least one vinyl aromatic such as styrene. Preferably the material is biaxially oriented. At 23 degrees C the oxygen permeability i...

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Bibliographic Details
Main Authors CHAI LEE,YOON, ALBERT TREMENTOZZI,QUIRINO
Format Patent
LanguageEnglish
German
Published 15.07.1971
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Summary:Packaging material for food and pharmaceuticals is based on copolymers, including graft copolymers, containing 70 - 98%, especially 78 - 98%, of methacrylonitrile and at least one vinyl aromatic such as styrene. Preferably the material is biaxially oriented. At 23 degrees C the oxygen permeability is lower than 0.005 cc/cm/24 hr./760 mm Hg/0.025 mm, and the water permeability is lower than 0.005 g/24 hr./cm/0.025 mm. The mechanical properties and the resistance to discoloration are good. USes are as films, bottles, containers, etc.
Bibliography:Application Number: DE19691965369