MANUFACTURE OF HALF-FINISHED PRODUCT OR MOLDED BODY FROM POLYPROPYLENE

MANUFACTURE OF HALF-FINISHED PRODUCT OR MOLDED BODY FROM POLYPROPYLENE

A process for the production of semifinished products and/or molded components from polypropylene by grafting thereto an alkoxysilane compound in the presence of an organic peroxide involves mising the polypropylene, the silane compound, and the peroxide and subsequently plasticizing and extruding a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YURUGEN FUENSUKE, BERUTORAMU GASUPAA, HORUSUTO URUPU, PAURU SHIYUPIIRAU, RIHIYARUTO BUAISU, HANSUUURURIHI BURAITOSHIYAIDERU, GERUTO KURINGUBERUKU, BUERUNAA KIYUUNERU, KARURO KURAARU
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Beschreibung
Zusammenfassung:A process for the production of semifinished products and/or molded components from polypropylene by grafting thereto an alkoxysilane compound in the presence of an organic peroxide involves mising the polypropylene, the silane compound, and the peroxide and subsequently plasticizing and extruding at a temperature of about 170 DEG -240 DEG C. The process utilizes an essentially isotactic homopolymer of propylene with a density of about 0.90-0.91 g/cm3 and a melt index MFI (# DEG C./5 kp) of smaller than 0.7 g/10 min, preferably smaller than 0.1 g/10 min, and with a molecular weight higher than 5x105. An initially non-crosslinked semifinished product is obtained.