Polypropylene molding composition for producing calendered...

C - Chemistry – Metallurgy – 08 – L

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C08L 23/10 (2006.01) B29C 43/24 (2006.01)

Patent

CA 2110440

A polypropylene molding composition which comprises 99.5 to 99.999% by weight of a homopolymer or copolymer of propylene with a MFI 230/2.16 of 2.0 to 25 g/10 min and 0.001 to 0.5% by weight of a fluorine-containing thermoplastic polymer with a fluorine content of at least 50% and a melting point of below 250°C makes it possible to produce, by calendering, polypropylene films of high quality. The addition of fluoropolymers is not only effective as regards the release effect, but also results in significantly fewer deposits and brings about an improved take-off behavior in comparison to the use of conventional lubricants.

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