Effect of Polymerization Technology on Processing Stability of Polypropylene Impact Copolymers

Effect of Polymerization Technology on Processing Stability of Polypropylene Impact Copolymers

Paper in proceedings (conference paper)

Processing stability of polypropylene impact-copolymers (ICPP) produced by Innovene, Spheripol and Unipol technologies were investigated during multiple extrusion using a twin-screw extruder at 220 degC . The materials were stabilized using the same type and level of phenol/phosphite stabilization. The observed differences in processing and long-term stabilities were related primarily to the reactivity of catalyst residues rather than to other factors, such as contents of ethylene, quantity of extractables, EPR phase composition, levels of ash or individual elements in it.

Processing stability of polypropylene impact-copolymers (ICPP) produced by Innovene, Spheripol and Unipol technologies were investigated during multiple extrusion using a twin-screw extruder at 220 degC . The materials were stabilized using the same type and level of phenol/phosphite stabilization. The observed differences in processing and long-term stabilities were related primarily to the reactivity of catalyst residues rather than to other factors, such as contents of ethylene, quantity of extractables, EPR phase composition, levels of ash or individual elements in it.

Processing, stability, polypropylene, impact-copolymer, ICPP, Innovene, Spheripol, Unipol, multiple extrusion, twin-screw, extruder, reactivity, catalyst residues

Processing, stability, polypropylene, impact-copolymer, ICPP, Innovene, Spheripol, Unipol, multiple extrusion, twin-screw, extruder, reactivity, catalyst residues

TOCHÁČEK, J.; JANČÁŘ, J.; HERMANOVÁ, S.; KALFUS, J.

2011

05.09.2010

MoDeSt Hellenic Organizing Committee - editors: C.D.Papaspyrides, S.N.Vouyiouka

Athens, Greece

978-960-99362-0-0

MODEST 2010GR - 6th International Conference on Modification, Degradation and Stabilization of Polymers, Proceedings CD

CD

CD

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