Process for the preparation of impact resistant propylene polymer compositions
Номер патента: EP2443159A1
Опубликовано: 25-04-2012
Автор(ы): Benedetta Gaddi, Francesca Verrocchio, Giampiero Morini, Gianni Collina, Marco Ciarafoni, Monica Galvan, Ofelia Fusco, Roberto Pantaleoni
Принадлежит: Basell Poliolefine Italia SpA
Опубликовано: 25-04-2012
Автор(ы): Benedetta Gaddi, Francesca Verrocchio, Giampiero Morini, Gianni Collina, Marco Ciarafoni, Monica Galvan, Ofelia Fusco, Roberto Pantaleoni
Принадлежит: Basell Poliolefine Italia SpA
Реферат: A process for the preparation of propylene polymer compositions carried out in the presence of a catalyst system comprising (a) a solid catalyst component having average particle size ranging from 15 to 80 μm comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 50 to 90% by mol with respect to the total amount of donors and selected from succinates and the other being selected from 1,3 diethers, (b) an aluminum alkyl and optionally (c) an external electron donor compound, and comprising the following steps: (i) contacting the catalyst components (a), (b) and optionally (c); (ii) pre -polymerizing up to forming amounts of polymer from about 0.1 up to about 1000 g per gram of solid catalyst component (a); (iii)polymerizing propylene producing a propylene (co)polymer being for at least 85% by weight of insoluble in xylene at 25°C and (iv)in a successive step, carried out in gas-phase, polymerizing mixtures of ethylene with α-olefϊns CH 2 =CHR in which R is a hydrocarbon radical having 1-10 carbon atoms, to produce the said ethylene copolymer.
Process for the preparation of heterophasic propylene polymer compositions
Номер патента: US09752023B2. Автор: Gianni Collina,Antonio Mazzucco,Benedetta Gaddi,Roberto Pantaleoni,Monica Galvan,Marco Ciarafoni,Ofelia Fusco,Andreas Neumann. Владелец: Basell Poliolefine Italia Srl. Дата публикации: 2017-09-05.