Process for the preparation of a syndiotactic propylene...

Details Process for the preparation of a syndiotactic propylene... Process for the preparation of a syndiotactic propylene...

C - Chemistry, Metallurgy

08

F

18/509, 402/570,

C08F 210/02 (2006.01) B29C 47/00 (2006.01) B29C 49/00 (2006.01) C08F 210/06 (2006.01) C08F 212/02 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2032771

Process for the preparation of a syndiotactic propylene copolymer A syndiatactic propylene copolymer is obtained in high yields by copolymerization of propylene with small amounts of other olefins in the presence of a catalyst comprising a metallocene of the formula I (see formula I) in which M1 is titanium, zirconium, hafnium, vanadium, niobium or tantalum and an aluminoxane. This copolymer has a very high molecular weight, a very narrow molecular weight distribution, very high syndiotaxicity, advantageously low melting points and rubber-like behavior. Molded articles produced from the polymer are distinguished by high transparency, flexibility and tear strength. Their main areas of application are packagings of any type.

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