Process for the preparation of ethylene-propylene copolymers

Details Process for the preparation of ethylene-propylene copolymers Process for the preparation of ethylene-propylene copolymers

C - Chemistry, Metallurgy

08

F

402/643

C08F 2/34 (2006.01) C08F 210/02 (2006.01) C08F 210/06 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2027037

A process is described for the preparation of ethylene-propylene copolymers having density values from 0.880 to 0.915 g/ml, for the copolymerization of ethylene and propylene, at a high pressure and at a high temperature, in a reactor vessel or tubular reactor, in the presence of a catalyst consisting of an aluminium trialkyl and a solid catalyst component containing 0.4 to 4.0 wt% titanium on a microspherical magnesium chloride support, in which the titanium is present partially in the trivalent and partially in the tetravalent form. The copolymers thus obtained are used for the production of film or for mixing with other polymers or with bitumen, in the production of bituminous casings for waterproofing, in the expanded foam sector and as a blending material for modifying the rheological character- istics of LLDPE.

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