PROCESS FOR PREPARING HIGH MELT STRENGTH POLYPROPYLENE AND CROSSLINKED POLYPROPYLENE PREPARED THEREWITH

• Main Authors: LUGAO, ADEMAR, BENEVOLO, TOKUMOTO, SHINICHI, OJEDA, TELMO, MANFROM, CASSINELLI, LUIS, FERNANDO, HUTZLER, BEATRIZ, WELTMAN, BRAGANCA, ANTONIO, LUIZ, DUARTE
• Format: Patent
• Language: English; French
• Published: 22.11.2001
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A process for preparing polypropylene and its copolymers of high melt strength while is kept melt index suitable for processing is described, the polypropylene and its copolymers being modified by grafting with high molecular weight portions and crosslinking with free radicals, both modifications be...