C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 3/18 (2006.01) C08K 5/00 (2006.01)
Patent
CA 2168650
A process for providing extrudable polyacrylonitrile compositions. Dry, particulate polyacrylonitrile having a moisture content of less than about 1.5 percent is mixed with a liquid plasticizer such as ethylene carbonate or propylene carbonate at a mixing temperature of about 140 °C to about 180 °C. This process produces an extrudable polyacrylonitrile-plasticizer composition which can be extruded to form film, fiber or other extruded or co-extruded products.
L'invention concerne un procédé d'obtention de compositions à base de polyacrylonitrile. On mélange un polyacrylonitrile particulaire sec, présentant une teneur en humidité inférieure à environ 1,5 % avec un plastifiant liquide tel que du carbonate d'éthylène ou du carbonate de propylène à une température de mélange comprise entre environ 140 et environ 180 DEG C. Ce procédé produit une composition de plastifiant-polyacrylonitrile extrudable que l'on peut extruder pour former des couches minces, des fibres ou autres produits extrudés ou coextrudés.
Marks & Clerk
Solcas Polymer Limited Partnership
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