Metallocene random copolymers with cool temperature impact...

C - Chemistry – Metallurgy – 08 – F

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C08F 210/16 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2668718

A metallocene random copolymer of propylene and ethylene in which the ductile/brittle transition temperature of a molded article made from the copolymer may be in the range of from about 200F (-70C) to about 4O0F (40C). The haze level of the molded article may be less than about 10 percent for an 80-mil (0.2cm) thick plaque. The metallocene random copolymer may further include a clarifier.

L'invention concerne un copolymère statistique de métallocène avec des propriétés antichocs à basse température de propylène et d'éthylène dans lequel la température de transition ductile/de fragilité d'un article moulé constitué du polymère peut être dans la plage d'environ -7 °C (20 °F) à environ 4 °C (40 °F). Le niveau de voile de l'article moulé peut être inférieur à environ 10 % pour une plaque de 0,2 cm (80 mil) d'épaisseur. Le copolymère statistique de métallocène peut en outre comprendre un clarificateur.

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