公开(公告)号：EP2501727B1

公开(公告)日：2014-05-14

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

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：EP2462171A1

公开(公告)日：2012-06-13

申请号：EP10739614.5

申请日：2010-08-02

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： FUSHIMI, Masaki ,  LIGUORI, Dario ,  DALL'OCCO, Tiziano ,  MORINI, Giampiero ,  PATER, Joachim T.M. ,  VITALE, Gianni

IPC: C08F10/02

CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F4/6494 ,  C08F2500/12 ,  C08F2500/04 ,  C08F210/06

Abstract: Process for the preparation of ethylene polymers having narrow MWD characterized by a F/E ratio lower than 35 carried out in the presence of a catalyst system comprising (a) a solid catalyst component comprising Ti atoms that are substantially in the +4 oxidation state, Mg, Cl, and optionally OR groups and internal donors in which R is a C1-C20 hydrocarbon group, in which the OR/Ti molar ratio is equal to or lower than 0.35 and the internal donor/ Ti ratio is lower than 1, (b) an aluminum alkyl compound and (c) a compound selected from alkoxybenzenes of specified formula.