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Luigi Resconi, Enrico Albizzati: Atactic polypropylene. Montell Technology Company, Bryan Cave, January 21, 1997: US05596052 (87 worldwide citation)

Amorphous propylene polymers are disclosed having the following characteristics:


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Govoni Gabriele, Rinaldi Roberto, Covezzi Massimo, Galli Paolo: Process and apparatus for the gas-phase polymerization of alpha-olefins. Montell Technology Company, July 9, 1997: EP0782587-A1 (66 worldwide citation)

Process for gas-phase polymerization carried out in two interconnected polymerization zones, to which one or more alpha -olefins CH2=CHR are fed in the presence of catalyst under reaction conditions and from which the polymer product is discharged. The process is characterized in that the growing po ...


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Luigi Resconi, Fabrizio Piemontesi, Maurizio Galimberti: Process for the preparation of ethylene polymers and products obtained therefrom. Montell Technology Company, Bryan Cave, December 17, 1996: US05585448 (51 worldwide citation)

Homo- and copolymers of ethylene endowed with very high molecular weights and narrow molecular weight distributions are obtainable by carrying out the polymerization reaction in the presence of a metallocene-based catalyst wherein the metallocene is stereorigid and it is in its meso isomeric form.


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Mario Sacchetti, Stefano Pasquali, Gabriele Govoni: Components and catalysts for the polymerization of olefins. Montell Technology Company, Bryan Cave, December 16, 1997: US05698487 (38 worldwide citation)

The present invention relates to components of catalysts for the polymerization of olefins comprising a metallocene compound and a magnesium halide which have particular values of porosity and surface area. In particular the components of the invention have surface area (BET) greater than about 50 m ...


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Tinh N Nguyen, Roger A Phillips: Polypropylene composition useful for making solid state oriented film. Montell Technology Company, March 14, 2000: US06037417 (37 worldwide citation)

Disclosed is a polypropylene composition useful for making solid state oriented film. The composition comprises two predominantly isotactic polypropylenes with the melting point temperature of one of the polypropylenes being substantially lower than the melting point temperature of the other. In one ...


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Luigi Resconi, Enrico Albizzati: Atactic polypropylene. Montell Technology Company, Bryan Cave, August 31, 1999: US05945496 (34 worldwide citation)

Amorphous propylene polymers are disclosed having the following characteristics:


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Luigi Resconi, Enrico Albizzati, Romano Mazzocchi: Crystalline copolymers of propylene. Montell Technology Company, Bryan Cave, May 14, 1996: US05516866 (31 worldwide citation)

Novel crystalline copolymers of propylene with minor proportions of ethylene and/or alpha-olefins, endowed with very good mechanical properties, a low melting point and a limited solubility in xylene at 25.degree. C., and the process for preparing them by means of the polymerization of mixtures of p ...


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Mario Sacchetti, Gabriele Govoni, Anna Fait: Magnesium dischloride-alcohol adducts and catalyst components obtained therefrom. Montell technology Company, Bryan Cave, Maurice B Stiefel, October 3, 2000: US06127304 (31 worldwide citation)

The present invention relates to MgCl.sub.2.mROH.nH.sub.2 O adducts, where R is a C.sub.1 -C.sub.10 alkyl, 2.ltoreq.m.ltoreq.4.2, 0.ltoreq.n.ltoreq.0.7, characterized by an X-ray diffraction spectrum in which, in the range of 2.theta. diffraction angles between 5.degree. and 15.degree., the three ma ...