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1. WO2020117456 - IMPROVED MELT FLOW INDEX RESPONSE IN POLYETHYLENE REACTORS

Publication Number WO/2020/117456
Publication Date 11.06.2020
International Application No. PCT/US2019/061907
International Filing Date 18.11.2019
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
CPC
C08F 10/02
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
10Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
02Ethene
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
C08F 2400/02
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
2400Characteristics for processes of polymerization
02Control or adjustment of polymerization parameters
C08F 2410/02
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
2410Catalyst preparation
02Anti-static agent incorporated into the catalyst
Applicants
  • CHEVRON PHILLIPS CHEMICAL COMPANY LP [US]/[US]
Inventors
  • LOWELL, Jeffrey S.
  • HASENBERG, Daniel M.
Agents
  • RHODES, Monte R.
Priority Data
16/209,12204.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVED MELT FLOW INDEX RESPONSE IN POLYETHYLENE REACTORS
(FR) RÉPONSE D'INDICE DE FLUIDITÉ AMÉLIORÉE DANS DES RÉACTEURS DE POLYÉTHYLÈNE
Abstract
(EN)
This disclosure provides for polymerization processes of polyolefins wherein the melt index can be regulated. For example, there is provided a process for producing a polyethylene, the process comprising: (1) in a polymerization reactor, contacting (a) a polymerization catalyst, (b) ethylene, (c) an optional α-olefin comonomer, and (d) (x + y) ppm by weight of an antistatic agent on an ethylene basis; and (2) applying reaction conditions to the reaction mixture suitable to produce the polyethylene having a desired set of characteristics, such as desired target melt index. The disclosed polymerization processes allow for production of polyolefins having higher melt indices, and in the alternative to produce polyolefins having a desired target melt index at lower polymerization temperatures.
(FR)
La présente divulgation concerne des procédés de polymérisation de polyoléfines dans lesquels l'indice de fluidité peut être régulé. Par exemple, un procédé de fabrication die polyéthylène est prévu. Il comprend les étapes qui consistent à : (1) dans un réacteur de polymérisation, mettre en contact (a) un catalyseur de polymérisation, (b) de l'éthylène, (c) un comonomère alpha-oléfine facultatif, et (d) (x + y) ppm en poids d'un agent antistatique sur une base d'éthylène ; et (2) appliquer des conditions de réaction au mélange réactionnel aptes à produire le polyéthylène possédant un ensemble souhaité de caractéristiques, tel qu'un indice de fluidité cible souhaité. Les procédés de polymérisation divulgués permettent la production de polyoléfines ayant des indices de fusion plus élevés, et dans la variante, de produire des polyoléfines ayant un indice de fluidité cible souhaité à des températures de polymérisation inférieures.
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