Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2019025560) POLYMERIZATION PROCESS INCLUDING DISCHARGING POLYOLEFIN PARTICLES FROM A GAS-PHASE POLYMERIZATION REACTOR
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/025560 International Application No.: PCT/EP2018/071031
Publication Date: 07.02.2019 International Filing Date: 02.08.2018
IPC:
C08F 2/34 (2006.01) ,C08F 10/00 (2006.01) ,C08F 2/01 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2
Processes of polymerisation
34
Polymerisation in gaseous state
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
10
Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2
Processes of polymerisation
01
characterised by special features of the polymerisation apparatus used
Applicants:
BASELL POLYOLEFINE GMBH [DE/DE]; Brühler Straße 60 50389 Wesseling, DE
Inventors:
MEI, Gabriele; US
MEI, Giulia; IT
PENZO, Giuseppe; IT
Agent:
SEELERT, Stefan; DE
Priority Data:
17184839.304.08.2017EP
Title (EN) POLYMERIZATION PROCESS INCLUDING DISCHARGING POLYOLEFIN PARTICLES FROM A GAS-PHASE POLYMERIZATION REACTOR
(FR) PROCÉDÉ DE POLYMÉRISATION COMPRENANT LA DÉCHARGE DE PARTICULES DE POLYOLÉFINE À PARTIR D'UN RÉACTEUR DE POLYMÉRISATION EN PHASE GAZEUSE
Abstract:
(EN) A process for preparing an olefin polymer, comprising the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C3-C5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas comprising a C3-C5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.
(FR) L'invention concerne un procédé de préparation d'un polymère d'oléfine, comprenant les étapes consistant à former un polymère d'oléfine particulaire dans un réacteur de polymérisation en phase gazeuse en présence d'un alcane en C3-C5 en tant que diluant de polymérisation, à séparer les particules de polyoléfine évacuées du gaz évacué de manière concomitante à une pression de 1 à 2,2 MPa, à dégazer les particules de polyoléfine à une pression de 0,1 à 0,4 MPa avec un gaz comprenant un alcane en C3-C5 ; et à transférer le gaz séparé et le gaz provenant du dégazage à une unité de traitement fonctionnant à une pression de 0, 001 à 0,2 MPa au-dessous de la pression de la séparation, le gaz de dégazage étant reçu en continu à partir de l'unité de traitement.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)