Process for the preparation of a random propylene copolymer

Details Process for the preparation of a random propylene copolymer Process for the preparation of a random propylene copolymer

C - Chemistry, Metallurgy

08

F

402/565, 402/570

C08F 2/00 (2006.01) C08F 210/00 (2006.01) C08F 210/04 (2006.01) C08F 210/06 (2006.01) C08F 210/14 (2006.01) C08F 212/06 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2010065

Process for the preparation of a random propylene copolymer Copolymerization of propylene with small amounts of other olefins in the presence of a catalyst composed of a metallocene of the formula I Image and an aluminoxane gives a copolymer in high yield. This copolymer has a homogeneous composition and the sequence length of the comonomer blocks is below 1.25. The molecular weight is in the range of about 100000 to 360000 g/mole, the polydispersity M w/M n, is in the range from 2.5 to 5.5. The copolymer has a low crystallinity and a high transparency and is not tacky. Test specimens of this copolymer have an enormous tensile strength. The copolymer is particularly suitable for the preparation of sheets for thermoforming and for the blowmolding of hollow articles.

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