公开(公告)号：US20200376458A1

公开(公告)日：2020-12-03

申请号：US16636774

申请日：2018-07-17

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： GIAN LUCA BONACCORSI ,  GIUSEPPE PENZO ,  ENRICO BALESTRA ,  MAURIZIO DORINI ,  RICCARDO RINALDI

IPC: B01J19/06 ,  B01J19/24

Abstract: A manhole for a polymerization unit having a through-hole formed with a shoulder matching a corresponding shoulder of a plug of a closure member operatively inserted in the through-hole. The through-hole can be closed with a minimum clearance, such that polymer particles do not deposit in the gap between the wall of the unit and the plug of the closure member.

公开(公告)号：US20200031957A1

公开(公告)日：2020-01-30

申请号：US16498303

申请日：2018-03-07

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： GABRIELE MEI ,  ANTONIO MAZZUCCO ,  TIZIANA CAPUTO ,  ENRICO BALESTRA ,  DAVIDE TARTARI ,  PAOLA MASSARI

IPC: C08F2/34 ,  C08F10/06 ,  C08F2/00 ,  C08F4/622 ,  C08L23/14 ,  C08F4/02

Abstract: Process for the preparation of heterophasic propylene copolymer compositions (RAHECO) made from or containing a random propylene copolymer (RACO) and an elastomeric propylene copolymer (BIPO), the process being carried out in a reactor having two interconnected polymerization zones, a riser and a downcomer, wherein growing polymer particles: (a) flow through the first polymerization zone, the riser, under fast fluidization conditions in the presence of propylene and of ethylene or an alpha-olefin having from 4 to 10 carbon atoms, thereby obtaining the random propylene copolymer (RACO); (b) leave the riser and enter the second polymerization zone, the downcomer, through which the growing polymer particles flow downward in a densified form in the presence of propylene and of ethylene or an alpha-olefin having from 4 to 10 carbon atoms, wherein the concentration of ethylene or of the alpha-olefin in the downcomer is higher than in the riser, thereby obtaining the elastomeric propylene copolymer (BIPO); and (c) leave the downcomer and are reintroduced into the riser, thereby establishing a circulation of polymer between the riser and the downcomer.

公开(公告)号：US20200032041A1

公开(公告)日：2020-01-30

申请号：US16495289

申请日：2018-03-23

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： GABRIELE MEI ,  ANTONIO MAZZUCCO ,  TIZIANA CAPUTO ,  ENRICO BALESTRA ,  DAVIDE TARTARI ,  GILBERTO MOSCARDI

IPC: C08L23/12 ,  C08L23/06

Abstract: A propylene ethylene copolymer having: (i) an ethylene derived units content (C2) ranging from 2.0 wt % to 11.0 wt %, based upon the total weight of the copolymer; (ii)) a fraction soluble in xylene (Xs) at 25° C. (Xs) ranging from 7.1 wt % to 28.5 wt %, based upon the total weight of the copolymer; (iii) an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 3.2 dl/g to 5.6 dl/g; (iv) a melting point (Tm) higher than 140.0° C. and fulfilling the relation (I): Tm>155−1.4×C2   (I); and (v) a flexural modulus (TM) higher than 500 MPa and fulfilling the relation (II) TM>1900−285×C2+50×Xs   (II).

公开(公告)号：US20190023885A1

公开(公告)日：2019-01-24

申请号：US16064900

申请日：2016-11-28

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： ANTONIO MAZZUCCO ,  GABRIELE MEI ,  TIZIANA CAPUTO ,  ROBERTO PANTALEONI ,  ENRICO BALESTRA ,  MARIA DI DIEGO ,  MARA DESTRO ,  RICCARDO RINALDI

IPC: C08L23/12

Abstract: A process for the preparation of polyolefins carried out in the presence of an antistatic composition made from or containing:a) a compound of formula R—OH wherein R represents hydrogen or a linear or branched, saturated alkyl group having from 1 to 15 carbon atoms; and b) an oligomeric or polymeric organic compound having one or more terminal hydroxyl groups and a viscosity at 40° C. of at least about 20 mm2/sec (DIN 51562).

公开(公告)号：US20200216588A1

公开(公告)日：2020-07-09

申请号：US16649044

申请日：2018-09-13

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： ANTONIO MAZZUCCO ,  ENRICO BALESTRA ,  ROBERTO PANTALEONI ,  DAVIDE TARTARI ,  RICCARDO RINALDI

IPC: C08F210/06 ,  B01J8/26 ,  B01J8/22

Abstract: A process for the polymerization of olefins in gas phase carried out in a reactor having two interconnected polymerization zones, a first zone (riser) and a second zone (downcomer), wherein growing polymer particles: a) flow through the riser under fast fluidization conditions established by feeding a mixture of gas and liquid; b) leave the riser and enter the downcomer, through which the growing polymer particles flow downward in a densified form; and c) leave the downcomer and are reintroduced into the riser, thereby establishing a circulation of polymer between the riser and the downcomer; the reactor is operated at a temperature between 0° C. and 5° C. above the dew point of the riser gas at the operating pressure, and in the riser, besides the growing polymer particles and gas flow, an amount of liquid is present.

公开(公告)号：US20190336930A1

公开(公告)日：2019-11-07

申请号：US16477283

申请日：2017-12-15

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： ENRICO BALESTRA ,  TIZIANA CAPUTO ,  MASSIMO COVEZZI ,  MAURIZIO DORINI ,  ANTONIO MAZZUCCO ,  GABRIELE MEI ,  RICARDO RINALDI

IPC: B01J8/24 ,  B01J8/18 ,  C08F2/01 ,  C08F2/44

Abstract: A fluid is fed into a polymer bed of a fluidized bed gas phase polymerization reactor by introducing the fluid into the polymer bed through a distributor protruding into the fluidized bed zone of the reactor and terminating with a discharge end positioned so that the following equation is fulfilled: d/D>0.002 wherein d is the distance of the distributor's discharge end from the wall of the reactor, and D is the diameter of the reactor in the fluidized bed zone.