C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/04 (2006.01) B29C 44/50 (2006.01) B29C 47/16 (2006.01) C08J 5/18 (2006.01) C08L 23/12 (2006.01)
Patent
CA 2343152
Foamable polypropylene composition comprising a polypropylene resin having an D1238L melt flow rate of from about 0.5 to about 30 g/10 min, and a method and apparatus for extruding rigid, foamed polypropylene sheet with improved surface appearance.
L'invention concerne une composition en polypropylène expansible comprenant une résine de polypropylène dont l'indice de fluidité à chaud D1238L est compris entre 0,5 et 30 g/10 min. L'invention traite également d'un procédé et d'un appareil permettant d'obtenir par extrusion des feuilles de mousse en polypropylène rigides d'aspect superficiel amélioré.
Choi-Feng Chin
Feng Daan
Han James H.
Jacoby Phil
Metaxas Constantine
Bp Amoco Corporation
Gowling Lafleur Henderson Llp
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