Material de moldagem de polipropileno para preparação de folhas de calandra e processo para apreparação de folhas de calandra

A polypropylene moulding composition containing from 99.5 to 99.999% by weight of a homopolymer or copolymer of propylene having an MFI 230/2.16 of from 2.0 to 25 g/10 min and from 0.01 to 0.5% by weight of a fluorine-containing thermoplastic polymer having a fluorine content of at least 50% and a m...

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Bibliographische Detailangaben
1. Verfasser:	JAN-PETER PIESOLD
Format:	Patent
Sprache:	por
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A polypropylene moulding composition containing from 99.5 to 99.999% by weight of a homopolymer or copolymer of propylene having an MFI 230/2.16 of from 2.0 to 25 g/10 min and from 0.01 to 0.5% by weight of a fluorine-containing thermoplastic polymer having a fluorine content of at least 50% and a melting point of below 250@C makes it possible to produce high-quality polypropylene films by the calandering method. The addition of fluoropolymers is not only more effective with respect to the release effect, but also gives significantly less deposits and causes an improved take-off behaviour compared with the use of conventional lubricants.