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1. WO2020135939 - PROCESS FOR PREPARATION OF POLYETHYLENE

Publication Number WO/2020/135939
Publication Date 02.07.2020
International Application No. PCT/EP2019/077741
International Filing Date 14.10.2019
IPC
C08F 210/16 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
C08F 2/01 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
01characterised by special features of the polymerisation apparatus used
C08F 2/14 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
12Polymerisation in non-solvents
14Organic medium
C08F 2/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
CPC
C08F 2/001
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
001Multistage polymerisation processes characterised by a change in reactor conditions without deactivating the intermediate polymer
C08F 2/01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
01characterised by special features of the polymerisation apparatus used
C08F 2/14
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
12Polymerisation in non-solvents
14Organic medium
C08F 210/16
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
Applicants
  • SABIC GLOBAL TECHNOLOGIES B.V. [NL]/[NL]
Inventors
  • GUZMAN-CARRAZCO, Job, Daniel
  • TAMMADONI, Maryam
  • DESHPANDE, Sanjeev
  • MATTHEIJ, Victor
Agents
  • SABIC INTELLECTUAL PROPERTY GROUP
Priority Data
18248032.727.12.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PREPARATION OF POLYETHYLENE
(FR) PROCÉDÉ POUR LA PRÉPARATION DE POLYÉTHYLÈNE
Abstract
(EN)
The invention relates to a process for the preparation of an ethylene-based polymer, the process comprising: a) suspension polymerizing ethylene and an optional comonomer to obtain a suspension (11) comprising the ethylene-based polymer and wax in a suspension medium comprising a diluent, b) separating the ethylene-based polymer (13) from the suspension (11) to obtain a liquid stream (12) comprising the diluent and the wax, c) feeding at least part of the liquid stream (25) to a forced circulation reboiler (Q) for separating the diluent and the wax to obtain an evaporated stream (27) comprising the diluent, wherein the evaporated stream (27) is recycled to step a).
(FR)
L'invention concerne un procédé pour la préparation d'un polymère à base d'éthylène, le procédé comprenant : a) la polymérisation en suspension de l'éthylène et d'un comonomère facultatif pour obtenir une suspension (11) comprenant le polymère à base d'éthylène et une cire dans un milieu de suspension comprenant un diluant, b) la séparation du polymère à base d'éthylène (13) de la suspension (11) pour obtenir un courant de liquide (12) comprenant le diluant et la cire, c) l'introduction d'au moins une partie du courant de liquide (25) dans un rebouilleur à circulation forcée (Q) pour séparer le diluant et la cire pour obtenir un courant évaporé (27) comprenant le diluant, le courant évaporé (27) étant recyclé dans l'étape a).
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