Syndiotactic crystalline copolymers of propylene

Details Syndiotactic crystalline copolymers of propylene Syndiotactic crystalline copolymers of propylene

C - Chemistry, Metallurgy

08

F

C08F 210/08 (2006.01) C08F 2/34 (2006.01) C08F 210/06 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2045728

ABSTRACT Essentially syndiotactic crystalline copolymers of propylene with minor proportions of 1-butene, endowed with good mechanical properties, lowered melting point and limited solubility in xylene at 25°C and the process for their preparation by polymerizing mixtures of propylene with 1- butene, by using catalysts obtained from stereorigid and chiral zirconium and hafnium compounds and from polymethylalumoxane compounds.

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