公开(公告)号：EP2501727A1

公开(公告)日：2012-09-26

申请号：EP10782232.2

申请日：2010-11-15

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： COLLINA, Gianni ,  CIARAFONI, Marco ,  FUSCO, Ofelia ,  GADDI, Benedetta ,  GALVAN, Monica ,  MORINI, Giampiero ,  PANTALEONI, Roberto ,  PATER, Joachim T.M. ,  PIEMONTESI, Fabrizio ,  VERROCCHIO, Francesca

IPC: C08F10/06

CPC classification number: C08F10/06 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16 ,  C08F2/001 ,  C08F4/6494 ,  C08F4/651 ,  C08F2500/12 ,  C08F2500/15 ,  C08F2500/05

Abstract: A process for the preparation of propylene polymer compositions comprising from 50 to 90% by weight of a propylene polymer fraction insoluble in xylene at 25°C, and from 10 to 50% by weight of an ethylene copolymer fraction soluble in xylene at 25°C, said process being carried out in the presence of a specific catalyst system, is also characterized by the following step: (i) contacting the catalyst components (a), (b) and optionally (c) for a period of time ranging from 0.1 to 120 minutes, at a temperature ranging from 0 to 90°C; (ii) polymerizing propylene in the optional presence of ethylene and/or C
4 -C
10 alpha olefins producing a propylene (co)polymer being for at least 85% by weight of insoluble in xylene at 25°C and (iii) in a successive step, carried out in gas-phase, in the presence of the product coming from (ii), polymerizing mixtures of ethylene with α-olefins CH
2 =CHR in which R is a hydrocarbon radical having 1-10 carbon atoms, to produce an ethylene copolymer. An increased reactivity in the last step is observed.

公开(公告)号：EP2225287B1

公开(公告)日：2011-08-31

申请号：EP08867168.0

申请日：2008-12-22

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： COLLINA, Gianni ,  FUSCO, Ofelia

IPC: C08F4/649 ,  C08F4/651 ,  C08F110/06

CPC classification number: C08F110/06 ,  B01J27/135 ,  B01J27/138 ,  B01J31/0201 ,  B01J31/0272 ,  B01J31/143 ,  B01J31/26 ,  B01J31/38 ,  C08F4/651 ,  C08F4/6492 ,  C08F2500/12 ,  C08F2500/18

Abstract: Prepolymerized catalyst component for the polymerization of olefins CH2=CHR in which R is hydrogen or a hydrocarbyl radical with 1-12 carbon atoms, having average particle size equal to or lower than 30 μm comprising a solid catalyst component comprising magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being selected from 1,3-diethers and the other one being selected from esters of aromatic mono or dicarboxylic acids, said solid catalyst component being prepolymerized with an olefin, having from 2 to 10 carbon atoms, to such an extent that the amount of the olefin prepolymer is equal to or lower than 5Og per g of solid catalyst component.

公开(公告)号：EP1268583B1

公开(公告)日：2009-08-26

申请号：EP01951489.2

申请日：2001-05-07

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： SACCHETTI, Mario ,  BRITA, Diego ,  COLLINA, Gianni

IPC: C08F4/649 ,  C08F4/655 ,  C08F4/656 ,  C08F110/02

CPC classification number: C08F4/6492 ,  C08F4/6555 ,  C08F4/6567 ,  C08F110/02 ,  C08F110/06 ,  C08F2500/18 ,  C08F2500/07 ,  C08F2500/12

Abstract: Catalyst components for the preparation of ethylene (co)polymers capable to produce polymers with high bulk density, to avoid the problems of formation of fines and that have a high activity are provided. Said catalyst components are characterized by comprising a non-stereospecific solid catalyst component, comprising a titanium compound and a magnesium dihalide, which is pre-polymerized with an alpha olefin CH2=CHRI wherein R is a C1-C8 alkyl group, to such an extent that the amount of the α-olefin pre-polymer is up to 100 g per g of said solid catalyst component.

公开(公告)号：EP0980396B2

公开(公告)日：2009-08-19

申请号：EP99913213.7

申请日：1999-03-02

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： CECCHIN, Giuliano ,  COLLINA, Gianni ,  COVEZZI, Massimo

IPC: C08F10/08 ,  C08F4/658

CPC classification number: C08F10/08 ,  C08F110/08 ,  Y10S526/901 ,  Y10S526/902 ,  Y10S526/904 ,  C08F4/6465 ,  C08F2500/15 ,  C08F2500/12 ,  C08F2500/04

Abstract: The present invention relates to polybutene-1 homopolymers, or copolymers containing up to 20 % by weight of alpha olefins having from 2 to 10 carbon atoms other than butene-1, characterized by the following properties: (i) an isotactic index (mmmm %), measured by NMR analysis according to the method specified below, of higher than 93; (ii) a Molecular Weight Distribution (MWD) in terms of Mw/Mn, measured by GPC analysis according to the method specified below, of higher than 6; and (iii) a content of catalytic residues expressed in terms of Ti ppm of lower than 50. Said polymers are very suitable for the preparation of articles, in particular pipes, having improved creep and burst stress resistance.

公开(公告)号：EP1987069A1

公开(公告)日：2008-11-05

申请号：EP07704470.9

申请日：2007-02-09

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： BRITA, Diego ,  COLLINA, Gianni

IPC: C08F4/654 ,  C08F10/02

CPC classification number: C08F10/00 ,  C08F210/16 ,  C08F4/651 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/17

Abstract: The present invention relates to catalysts component for the polymerization of ethylene and its mixtures with olefins CH2=CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising Ti, Mg, halogen, and electron donor belonging to 1,2-diethers as internal electron donor compound. The catalyst of the invention is suitably used in (co)polymerization processes of ethylene to prepare (co)polymers having narrow Molecular Weight Distribution (MWD) and high bulk density.

公开(公告)号：EP1697433A1

公开(公告)日：2006-09-06

申请号：EP04820808.6

申请日：2004-11-24

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： COLLINA, Gianni ,  EVANGELISTI, Daniele ,  SACCHETTI, Mario

IPC: C08F110/06 ,  C08F4/654

CPC classification number: C08F110/06 ,  C07F3/003 ,  C08F4/6545 ,  C08F4/651 ,  C08F2500/15 ,  C08F2500/18 ,  C08F2500/20

Abstract: Adducts are provided comprising MgCl2, ethanol and a Lewis base (LB), said compounds being present in molar ratios defined by the following formula MgCl2.(EtOH)n(LB)p in which n is from 2 to 6 and p has values satisfying the following equation p/(n+p)≦̸0.1. The said adducts can be used as precursor in the preparation of high activity ZN catalysts.