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1. WO2021028159 - MULTIMODAL POLYETHYLENE

Publication Number WO/2021/028159
Publication Date 18.02.2021
International Application No. PCT/EP2020/070484
International Filing Date 20.07.2020
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 4/655 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
4Polymerisation catalysts
42Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
44selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides
60together with refractory metals, iron group metals, platinum group metals, manganese, technetium, rhenium, or compounds thereof
62Refractory metals or compounds thereof
64Titanium, zirconium, hafnium, or compounds thereof
65Pretreating the metal or compound covered by group C08F4/64 before the final contacting with the metal or compound covered by group C08F4/44180
652Pretreating with metals or metal-containing compounds
655with aluminium or compounds thereof
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
C08L 23/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
06Polyethene
C08L 23/08 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
CPC
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
  • LANGSTRAAT, Thomas
  • VADAKE KULANGARA, Shaneesh
  • VAN KESSEL, Matthijs
Agents
  • SABIC INTELLECTUAL PROPERTY GROUP
Priority Data
19191288.012.08.2019EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTIMODAL POLYETHYLENE
(FR) POLYÉTHYLÈNE MULTIMODAL
Abstract
(EN)
The invention relates to a multimodal ethylene polymer which has a density of 0.955 to 0.960 g/cm3 at 23 °C, a melt flow index as measured according to ISO1133-1:2011 at 190 ºC and 5 kg of 0.9 to 1.7 dg/min and a ratio of Mz/Mw of at least 7.0, and which comprises 40 to 53 wt% of a low-molecular-mass ethylene polymer component A, 25 to 40 wt% of a high-molecular-mass ethylene polymer component B and 15 to 28 wt% of an ultrahigh-molecular-mass ethylene polymer component C, wherein all values are based on the total weight of the multimodal ethylene polymer, wherein the multimodal ethylene polymer is prepared by polymerizing the component A, subsequently polymerizing the component B in the presence of the component A and subsequently polymerizing the component C in the presence of the components A and B and the ethylene polymer component A has a viscosity number VN1 of 90 to 110 cm3/g, for example 95 to 105 cm3/g, the mixture of the ethylene polymer component A and the ethylene polymer component B has a viscosity number VN2 of 175 to 225 cm3/g, for example 180 to 220 cm3/g, and the mixture of the ethylene polymer component A, the ethylene polymer component B and the ethylene polymer component C has a viscosity number VN3 of 240 to 320 cm3/g, for example 250 to 300 cm3/g, wherein VN1, VN2 and VN3 are measured according to ISO/R 1191 in decalin at 135 ºC.
(FR)
L'invention concerne un polymère d'éthylène multimodal qui a une masse volumique comprise entre 0,955 et 0,960 g/cm3 à 23 °C, un indice de fluidité tel que mesuré selon la norme ISO1133-1:2011 à 190 °C et 5 kg compris entre 0,9 et 1,7 dg/min et un rapport Mz/Mw d'au moins 7,0, et qui comprend 40 à 53 % en poids d'un constituant A polymère d'éthylène de faible masse moléculaire, 25 à 40 % en poids d'un constituant B polymère d'éthylène de masse moléculaire élevée et 15 à 28 % en poids d'un constituant C polymère d'éthylène de masse moléculaire élevée, toutes les valeurs étant indiquées par rapport au poids total du polymère d'éthylène multimodal, le polymère d'éthylène multimodal étant préparé par polymérisation du constituant A, ensuite la polymérisation du constituant B en présence du constituant A, puis la polymérisation du constituant C en présence des constituants A et B et le constituant A polymère d'éthylène a un indice de viscosité VN1 compris entre 90 et 110 cm3/g, par exemple compris entre 95 et 105 cm3/g, le mélange du constituant A polymère d'éthylène et du constituant B polymère d'éthylène a un indice de viscosité VN2 compris entre 175 et 225 cm3/g, par exemple compris entre 180 et 220 cm3/g, et le mélange du constituant A polymère d'éthylène, du constituant B polymère d'éthylène et du constituant C polymère d'éthylène a un indice de viscosité VN3 compris entre 240 et 320 cm3/g, par exemple compris entre 250 et 300 cm3/g, VN1, VN2 et VN3 étant mesurés selon la norme ISO/R 1191 dans de la décaline à 135 °C.
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