WO2015158790A2 - Improved catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process - Google Patents
Improved catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process Download PDFInfo
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- WO2015158790A2 WO2015158790A2 PCT/EP2015/058204 EP2015058204W WO2015158790A2 WO 2015158790 A2 WO2015158790 A2 WO 2015158790A2 EP 2015058204 W EP2015058204 W EP 2015058204W WO 2015158790 A2 WO2015158790 A2 WO 2015158790A2
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- 239000003054 catalyst Substances 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 69
- -1 polyethylene copolymers Polymers 0.000 title claims description 32
- 239000004698 Polyethylene Substances 0.000 title claims description 8
- 229920000573 polyethylene Polymers 0.000 title claims description 7
- 238000010528 free radical solution polymerization reaction Methods 0.000 title description 18
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 claims abstract description 47
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Natural products C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 claims abstract description 46
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 42
- 229910052796 boron Inorganic materials 0.000 claims abstract description 23
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003446 ligand Substances 0.000 claims abstract description 17
- 229920001038 ethylene copolymer Polymers 0.000 claims abstract description 14
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 claims abstract description 5
- 125000006736 (C6-C20) aryl group Chemical group 0.000 claims abstract description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 51
- 238000006116 polymerization reaction Methods 0.000 claims description 38
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 24
- 229920000642 polymer Polymers 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 19
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 16
- 239000005977 Ethylene Substances 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- VPGLGRNSAYHXPY-UHFFFAOYSA-L zirconium(2+);dichloride Chemical compound Cl[Zr]Cl VPGLGRNSAYHXPY-UHFFFAOYSA-L 0.000 claims description 10
- 239000004711 α-olefin Substances 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 9
- 125000005843 halogen group Chemical group 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 7
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 6
- 125000001424 substituent group Chemical group 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 claims description 4
- AIXMJTYHQHQJLU-UHFFFAOYSA-N chembl210858 Chemical compound O1C(CC(=O)OC)CC(C=2C=CC(O)=CC=2)=N1 AIXMJTYHQHQJLU-UHFFFAOYSA-N 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 4
- 125000002015 acyclic group Chemical group 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 150000001450 anions Chemical class 0.000 claims description 3
- 239000003849 aromatic solvent Substances 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 125000005842 heteroatom Chemical group 0.000 claims description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- GXBJVEZAEHKRQW-UHFFFAOYSA-L [Cl-].[Cl-].C[SiH](C)[Zr+2]C1C(=C(C2=C(C=CC=C12)C1=CC=CC=C1)C1C(=CC2=C(C(=C(C=C12)C(C)(C)C)OC)C1=CC=CC=C1)C)C Chemical compound [Cl-].[Cl-].C[SiH](C)[Zr+2]C1C(=C(C2=C(C=CC=C12)C1=CC=CC=C1)C1C(=CC2=C(C(=C(C=C12)C(C)(C)C)OC)C1=CC=CC=C1)C)C GXBJVEZAEHKRQW-UHFFFAOYSA-L 0.000 claims description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims description 2
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 claims description 2
- 125000002827 triflate group Chemical group FC(S(=O)(=O)O*)(F)F 0.000 claims 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 abstract description 4
- 229910052735 hafnium Inorganic materials 0.000 abstract description 3
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 abstract 6
- 125000006659 (C1-C20) hydrocarbyl group Chemical group 0.000 abstract 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 65
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 60
- 239000000243 solution Substances 0.000 description 57
- 239000000203 mixture Substances 0.000 description 35
- VLKZOEOYAKHREP-UHFFFAOYSA-N methyl pentane Natural products CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 31
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 25
- 238000010348 incorporation Methods 0.000 description 18
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 17
- CPOFMOWDMVWCLF-UHFFFAOYSA-N methyl(oxo)alumane Chemical compound C[Al]=O CPOFMOWDMVWCLF-UHFFFAOYSA-N 0.000 description 17
- 238000004009 13C{1H}-NMR spectroscopy Methods 0.000 description 15
- 238000005160 1H NMR spectroscopy Methods 0.000 description 15
- PBAYDYUZOSNJGU-UHFFFAOYSA-N chelidonic acid Natural products OC(=O)C1=CC(=O)C=C(C(O)=O)O1 PBAYDYUZOSNJGU-UHFFFAOYSA-N 0.000 description 13
- QNXSIUBBGPHDDE-UHFFFAOYSA-N indan-1-one Chemical compound C1=CC=C2C(=O)CCC2=C1 QNXSIUBBGPHDDE-UHFFFAOYSA-N 0.000 description 12
- 239000010410 layer Substances 0.000 description 12
- 239000000284 extract Substances 0.000 description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 10
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 9
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 9
- 239000004411 aluminium Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 239000012044 organic layer Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000007334 copolymerization reaction Methods 0.000 description 6
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 238000005481 NMR spectroscopy Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 5
- 239000003570 air Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 125000001309 chloro group Chemical group Cl* 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 4
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 150000001642 boronic acid derivatives Chemical class 0.000 description 4
- HEAMQYHBJQWOSS-UHFFFAOYSA-N ethene;oct-1-ene Chemical compound C=C.CCCCCCC=C HEAMQYHBJQWOSS-UHFFFAOYSA-N 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 4
- 239000012968 metallocene catalyst Substances 0.000 description 4
- 239000012452 mother liquor Substances 0.000 description 4
- 125000002524 organometallic group Chemical group 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 3
- QRYIYDYYWGGNGM-UHFFFAOYSA-N BrC1=C2CC(C(C2=C(C=2CCCC12)Br)OC)C Chemical compound BrC1=C2CC(C(C2=C(C=2CCCC12)Br)OC)C QRYIYDYYWGGNGM-UHFFFAOYSA-N 0.000 description 3
- WHGYMZHCOYOKOT-UHFFFAOYSA-N BrC1=C2CC(C(C2=CC=2CCCC12)OC)C Chemical compound BrC1=C2CC(C(C2=CC=2CCCC12)OC)C WHGYMZHCOYOKOT-UHFFFAOYSA-N 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000005004 MAS NMR spectroscopy Methods 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 125000002877 alkyl aryl group Chemical group 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- 238000003818 flash chromatography Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000012279 sodium borohydride Substances 0.000 description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 239000011949 solid catalyst Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 3
- AQZWEFBJYQSQEH-UHFFFAOYSA-N 2-methyloxaluminane Chemical compound C[Al]1CCCCO1 AQZWEFBJYQSQEH-UHFFFAOYSA-N 0.000 description 2
- SWLJNSSJTJLLJS-UHFFFAOYSA-N 4-bromo-6-tert-butyl-5-methoxy-2-methyl-2,3-dihydroinden-1-one Chemical compound C1=C(C(C)(C)C)C(OC)=C(Br)C2=C1C(=O)C(C)C2 SWLJNSSJTJLLJS-UHFFFAOYSA-N 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- 125000003358 C2-C20 alkenyl group Chemical group 0.000 description 2
- QXCKSKANQBUTAO-UHFFFAOYSA-L COC1=C(C(C)(C)C)C=C2C([Zr](Cl)(Cl)(C3C4=C(C(=C(OC)C(=C4)C(C)(C)C)C=4C=CC=CC=4)C=C3C)[SiH](C)C)C(C)=CC2=C1C1=CC=CC=C1 Chemical compound COC1=C(C(C)(C)C)C=C2C([Zr](Cl)(Cl)(C3C4=C(C(=C(OC)C(=C4)C(C)(C)C)C=4C=CC=CC=4)C=C3C)[SiH](C)C)C(C)=CC2=C1C1=CC=CC=C1 QXCKSKANQBUTAO-UHFFFAOYSA-L 0.000 description 2
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- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
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- 150000001639 boron compounds Chemical class 0.000 description 2
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- JLTDJTHDQAWBAV-UHFFFAOYSA-O dimethyl(phenyl)azanium Chemical compound C[NH+](C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-O 0.000 description 2
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 2
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- 229910021645 metal ion Inorganic materials 0.000 description 2
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
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- 239000002808 molecular sieve Substances 0.000 description 2
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 2
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 2
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- UQFSVBXCNGCBBW-UHFFFAOYSA-M tetraethylammonium iodide Chemical compound [I-].CC[N+](CC)(CC)CC UQFSVBXCNGCBBW-UHFFFAOYSA-M 0.000 description 2
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 2
- 125000000027 (C1-C10) alkoxy group Chemical group 0.000 description 1
- 125000006649 (C2-C20) alkynyl group Chemical group 0.000 description 1
- 125000006528 (C2-C6) alkyl group Chemical group 0.000 description 1
- 125000006376 (C3-C10) cycloalkyl group Chemical group 0.000 description 1
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- AYRVGWHSXIMRAB-UHFFFAOYSA-M sodium acetate trihydrate Chemical compound O.O.O.[Na+].CC([O-])=O AYRVGWHSXIMRAB-UHFFFAOYSA-M 0.000 description 1
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- NYBWUHOMYZZKOR-UHFFFAOYSA-N tes-adt Chemical class C1=C2C(C#C[Si](CC)(CC)CC)=C(C=C3C(SC=C3)=C3)C3=C(C#C[Si](CC)(CC)CC)C2=CC2=C1SC=C2 NYBWUHOMYZZKOR-UHFFFAOYSA-N 0.000 description 1
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- IMFACGCPASFAPR-UHFFFAOYSA-O tributylazanium Chemical compound CCCC[NH+](CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-O 0.000 description 1
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- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 1
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- RIOQSEWOXXDEQQ-UHFFFAOYSA-O triphenylphosphanium Chemical compound C1=CC=CC=C1[PH+](C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-O 0.000 description 1
- GIIXTFIYICRGMZ-UHFFFAOYSA-N tris(2,3-dimethylphenyl)phosphane Chemical compound CC1=CC=CC(P(C=2C(=C(C)C=CC=2)C)C=2C(=C(C)C=CC=2)C)=C1C GIIXTFIYICRGMZ-UHFFFAOYSA-N 0.000 description 1
- COIOYMYWGDAQPM-UHFFFAOYSA-N tris(2-methylphenyl)phosphane Chemical compound CC1=CC=CC=C1P(C=1C(=CC=CC=1)C)C1=CC=CC=C1C COIOYMYWGDAQPM-UHFFFAOYSA-N 0.000 description 1
- MLDSMTVYPPIXMZ-UHFFFAOYSA-N tris(4-methylpentyl)alumane Chemical compound CC(C)CCC[Al](CCCC(C)C)CCCC(C)C MLDSMTVYPPIXMZ-UHFFFAOYSA-N 0.000 description 1
- RKPWAHQNLQXPPH-UHFFFAOYSA-N tris(6-methylheptyl)alumane Chemical compound CC(C)CCCCC[Al](CCCCCC(C)C)CCCCCC(C)C RKPWAHQNLQXPPH-UHFFFAOYSA-N 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
- C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
- C08F4/65927—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually bridged
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F17/00—Metallocenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/04—Polymerisation in solution
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/04—Polymerisation in solution
- C08F2/06—Organic solvent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/14—Monomers containing five or more carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65908—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/03—Narrow molecular weight distribution, i.e. Mw/Mn < 3
Definitions
- the present invention is related to improved catalyst systems, which are able to produce polyethylene copolymers in a high temperature solution polymerization process.
- the catalyst systems comprise a combination of selected bisindenyl metallocene complexes, substituted at least in position 2 and 4 of both indenyls along with cocatalyst mixture comprising an aluminoxane cocatalyst and optionally additionally a boron based cocatalyst.
- Metallocene catalysts have been used to manufacture polyolefins for many years. Countless academic and patent publications describe the use of these catalysts in olefin polymerization. Metallocenes are now used industrially and polyethylenes and in particular polypropylenes are often produced using cyclopentadienyl based catalyst systems with different substitution patterns.
- WO 2007/1 16034 describes i.a. a catalyst system comprising racemic dimethylsilylbis(2-methyl-4-phenyl-5-methoxy-6-tert-butylinden-1 -yl)dichlorozirconium and methylalumoxane cocatalyst for producing polypropylene in a solution polymerization process at temperatures between 100°C and 120°C.
- metallocene compounds can also be used for preparing ethylene copolymers, preferably ethylene-butene copolymers, but it is said that such copolymers are obtained by using gas phase processes.
- WO 2007/122098 describes the use of the complex racemic dimethylsilylbis(2-methyl-4- (4-tert-butylphenyl)-1 ,5,6,7-tetrahydro-s-indacen-1-yl)dichlorozirconium in combination with an alumoxane cocatalyst for producing ethylene copolymers at 100°C.
- EP 2532687 A describes further metallocene complexes, like dimethylsilanediylbis[2-methyl- 4-(3,5-di-ie f-butylphenyl)-7-methoxy-indenyl]zirconiumdichloride, which is first pre-alkylated with an aluminium alkyl compound and then activated with borate cocatalyst.
- the catalyst system is used for preparing polypropylene at a temperature between 30°C to 70°C.
- WO 201 1/135004 complexes as described in WO 2007/1 16034, like racemic dimethylsilylbis(2-methyl-4-phenyl-5-methoxy-6-tert-butylinden-1 -yl)dichlorozirconium and prepared according to the emulsion/solidification method as described in WO 2003/051934 are disclosed. These complexes are activated with an alumoxane cocatalyst and used for propylene polymerization.
- WO 2012/075560 further describes a multi stage (at least two stage) solution polymerization process for preparing ethylene copolymers, wherein a phosphinimine catalyst is used with a cocatalyst comprising an alkylaluminoxane and an ionic activator, like a boron compound.
- Drawbacks arising from a low reactivity for the C4-10 alpha-olefin comonomer are e.g. increasing amounts of the alpha-olefin comonomer that are needed for introducing a certain amount of higher alpha-olefin comonomer units into the polymer and/or removal of non- reacted higher alpha-olefin from the polymer powder.
- a further important and desired property of the catalyst system used is a high productivity in order to get a maximum of polyethylene produced with as low amount of catalyst as possible.
- high-temperature solution processes for olefin polymerization require a thermally robust catalyst.
- solution processes are characterized by short residence times. Consequently, in addition to having temperature stability, the catalyst systems used in these processes must activate quickly and thoroughly. This contrasts sharply with the requirements for catalysts used in slurry and gas-phase processes, where residence times are longer and catalyst lifetime is more important.
- a catalyst that is valuable for slurry and gas-phase processes might be a poor choice for use in a high-temperature solution process, and vice-versa.
- the inventors set out to develop a new/improved catalyst system having superior polymerization behaviour than the above mentioned polymerization catalyst systems regarding to productivity, comonomer incorporation and thermal stability.
- the present inventors have now found improved catalyst systems, which are able to solve the problems disclosed above.
- the invention combines the use of special metallocene complexes with aluminoxane cocatalysts and optionally in addition a boron based cocatalyst in a high temperature solution polymerization process for producing ethylene copolymers.
- the invention relates to a catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising
- M is Hf or Zr
- X is a sigma ligand
- L is a bridge of the formula -SiR 8 2 -, wherein each R 8 is independently a Ci-C 20 - hydrocarbyl, tri(Ci-C 2 o-alkyl)silyl, C 6 -C 2 o-aryl, C 7 -C 2 o-arylalkyl or C 7 -C 2 o-alkylaryl, n is 0, 1 or 2,
- R 1 and R 1 are the same or can be different and can be a linear or branched CrC 6 -alkyl group
- R 2 and R 2 are the same or can be different and are a CH 2 -R 9 group, with R 9 being H or linear or branched CrC 6 -alkyl group
- R 5 and R 5' are the same or are different and can be H or a linear or branched Ci-C 6 - alkyl group or a OR group, wherein R is a CrC 6 -alkyl group
- R 6 and R 6 are the same or are different and can be H or a C(R 10 ) 3 group, with R 10 being the same or different and R 10 can be H or a linear or branched CrC 6 -alkyl group
- R 5 and R 6 and/or R 5 and R 6' taken together form an unsubstituted 4-7 membered ring condensed to the benzene ring of the indenyl moiety
- R 5 and R 6 as well as R 5 and R 6' taken together form an unsubstituted 5 membered ring condensed to the benzene ring of the indenyl moiety then R 2 and R 2 are not a Ci-alkyl group;
- R 7 and R 7 can be the same or are different and can be H or a linear or branched C C 6 -alkyl group
- M is Zr
- X is CI or methyl group
- L is a bridge of the formula -SiR 8 2 -, wherein both R 8 are the same CrC 4 -hydrocarbyl or Ce-aryl group,
- R 1 and R 1 are the same and are a linear or branched CrC 4 -alkyl group
- n 1 or 2
- R 2 and R 2 are the same and are a CH 2 -R 9 group, with R 9 being H or a CrC 3 -alkyl group, one of R 5 and R 6 or R 5' and R 6 form together an unsubstituted 5-6 membered ring condensed to the benzene ring of the indenyl moiety, and the remaining residues of R 5 and R 6 or R 5' and R 6 , are for R 5 or R 5' a OR group, wherein R is a CrC 4 -alkyl group and for R 6 or R 6' a C(R 10 ) 3 group, with R 10 being the same and R 10 can be a CrC 2 -alkyl group,
- R 7 and R 7' are both H
- the invention provides a process for the preparation of an ethylene copolymer comprising polymerizing ethylene and a C-4-10 alpha-olefin comonomer in a high temperature solution process at a temperature greater than 100°C in the presence of a catalyst comprising:
- the invention provides an ethylene copolymer made by a process as hereinbefore defined.
- the single site metallocene complex especially the complexes defined by the formula (I) specified in the present invention, used for manufacture of the ethylene copolymer are symmetrical or asymmetrical.
- asymmetrical complexes that means that the two indenyl ligands forming the metallocene complex are different, that is, each indenyl ligand bears a set of substituents that are either chemically different, or located in different positions with respect to the other indenyl ligand. More precisely, they are chiral, racemic bridged bisindenyl metallocene complexes.
- racemic-anti means that the two indenyl ligands are oriented in opposite directions with respect to the cyclopentadienyl-metal- cyclopentadienyl plane
- racemic-syn means that the two indenyl ligands are oriented in the same direction with respect to the cyclopentadienyl-metal-cyclopentadienyl plane, as shown in the Figure below.
- Formula (I) is intended to cover both syn and anti configurations.
- metallocene complexes of the invention are employed as the rac anti isomer. Ideally therefore at least 95% mol, such as at least 98% mol, especially at least 99% mol of the metallocene catalyst is in the racemic anti isomeric form.
- M is Hf or Zr
- X is a sigma ligand
- L is a bridge of the formula -SiR 8 2 -, wherein each R 8 is independently a Ci-C 20 - hydrocarbyl, tri(Ci-C 2 o-alkyl)silyl, C 6 -C2o-aryl, C 7 -C 2 o-arylalkyl or C 7 -C 2 o-alkylaryl n is 0, 1 or 2
- R 1 and R 1 are the same or can be different and can be a linear or branched CrC 6 -alkyl group
- R 2 and R 2 are the same or can be different and are a CH 2 -R 9 group, with R 9 being H or linear or branched CrC 6 -alkyl group,
- R 5 and R 5' are the same or are different and can be H or a linear or branched Ci-C 6 - alkyl group or a OR group, wherein R is a CrC 6 -alkyl group,
- R 6 and R 6 are the same or are different and can be H or a C(R 10 ) 3 group, with R 10 being the same or different and R 10 can be H or a linear or branched CrC 6 -alkyl group
- R 5 and R 6 and/or R 5 and R 6' taken together form an unsubstituted 4-7 membered ring condensed to the benzene ring of the indenyl moiety
- R 5 and R 6 as well as R 5 and R 6' taken together form an unsubstituted 5 membered ring condensed to the benzene ring of the indenyl moiety then R 2 and R 2 are not a Ci-alkyl group;
- R 7 and R 7 can be the same or are different and can be H or a linear or branched C C 6 -alkyl group
- each X which may be the same or different, is a sigma ligand, preferably a hydrogen atom, a halogen atom, a R 11 , OR 11 , OS0 2 CF 3 , OCOR 11 , SR 11 , NR 11 2 or PR 11 2 group wherein R 11 is a linear or branched, cyclic or acyclic, CrC 20 -alkyl, C 2 -C 20 -alkenyl, C 2 - C 20 -alkynyl, C 6 -C 20 -aryl, C 7 -C 20 -alkylaryl or C 7 -C 20 -arylalkyl radical; optionally containing heteroatoms belonging to groups 14-16 or is SiR 11 3 , SiHR 11 2 or SiH 2 R 11 .
- R 11 is preferably a Ci- 6
- each X is independently a hydrogen atom, a halogen atom, Ci -6 -alkoxy group or an R 11 group, e.g. preferably a Ci -6 -alkyl, phenyl or benzyl group.
- X is chlorine or a methyl radical.
- both X groups are the same.
- n is 0, 1 or 2
- R 1 and R 1 can be a linear or branched CrC 6 -alkyl group, like methyl, ethyl, n-propyl, i-propyl, n-butyl or tert. -butyl.
- R 1 and R 1 are the same and are a linear or branched CrC 6 -alkyl group, more preferably a linear or branched C 2 -C 6 -alkyl group, more preferably a linear or branched butyl- group and most preferably R 1 and R 1 are tert. -butyl.
- n can be 0 only for one of the ligands and not for both.
- R 1 and R 1 are preferably on position 4 (para) of the phenyl ring and if n is 2 then R 1 and R 1 are preferably on positions 3 and 5 of the phenyl ring.
- Both phenyl rings are substituted by R 1 and R 1 , whereby n can be the same or can be different for the two phenyl rings and is 1 or 2.
- n 1 or 2, preferably 1.
- R 2 and R 2 are the same or can be different and are a CH 2 -R 9 group, with R 9 being H or linear or branched CrC 6 -alkyl group, like methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec. -butyl and tert. -butyl.
- R 2 and R 2 are the same and are a CH 2 -R 8 group, with R 9 being H or linear or branched CrC 4 -alkyl group, more preferably R 2 and R 2 are the same and are a CH 2 -R 9 group, with R 9 being H or linear or branched CrC 3 -alkyl group and most preferably R 2 and R 2 are either both methyl or both i-butyl.
- R 5 and R 5' are the same or are different and can be H or a linear or branched CrC 6 -alkyl group or a OR group, wherein R is a linear or branched CrC 6 -alkyl group, and R 6 and R 6 are the same or are different and can be a H or a C(R 10 ) 3 group, with R 10 being the same or different and R 10 can be H or a linear or branched CrC 6 -alkyl group,
- R 5 and R 6 and/or R 5 and R 6' taken together form an unsubstituted 4-7, preferably 5-6 membered ring condensed to the benzene ring of the indenyl moiety, with the proviso that if R 5 and R 6 as well as R 5 and R 6' taken together form an unsubstituted 5 membered ring condensed to the benzene ring of the indenyl moiety then R 2 and R 2 are not a Ci-alkyl group.
- R 5 and R 6 or R 5 and R 6' together form an unsubstituted 4-7, preferably 5-6 membered ring condensed to the benzene ring of the indenyl moiety
- substituents on the other indenyl moiety are preferably (for R 5 or R 5 ) a OR group wherein R is a linear or branched CrC 6 -alkyl group, like methyl, ethyl, n-propyl, i- propyl, n-butyl, i-butyl, sec. -butyl and tert.
- R 10 being the same or different and R 10 can be H or a linear or branched CrC 6 -alkyl group, preferably with R 10 being the same or different and R 10 being a linear or branched CrC 4 -alkyl group, more preferably with R 10 being the same and R 10 being a C-i-C 2 - alkyl group, most preferably the C(R 10 ) 3 group is a tert. -butyl group.
- both of R 5 and R 6 as well as R 5 and R 6' together form an unsubstituted 4-7, preferably 5-6 membered ring condensed to the benzene ring of the indenyl moiety. More preferably both of R 5 and R 6 as well as R 5 and R 6 form an unsubstituted 5 membered ring condensed to the benzene ring of the indenyl moiety, with the proviso that if R 5 and R 6 as well as R 5 and R 6' taken together form an unsubstituted 5 membered ring condensed to the benzene ring of the indenyl moiety then R 2 and R 2 are not a Ci-alkyl group.
- R 5 and R 6 are hydrogen. Still a further possibility is that only one of the ligands is unsubstituted in position 5 and 6.
- R 7 and R 7 can be the same or are different and can be H or a linear or branched CrC 6 -alkyl group, preferably R 7 and R 7 are the same or are different and can be H or a linear or branched CrC 4 -alkyl group and more preferably R 7 and R 7 are the same or are different and can be H or a CrC 2 -alkyl group.
- R 7 and R 7 are the same and are both H
- R 7 or R 7 is a linear or branched CrC 6 - alkyl group, preferably a linear or branched Ci-C 4 -alkyl group and more preferably a Ci-C 2 - alkyl group and the other is H.
- L is a bridge of the formula -SiR 8 2 -, wherein each R 8 is independently a CrC 20 -hydrocarbyl, tri(Ci-C 20 -alkyl)silyl, C 6 -C 20 -aryl, C 7 -C 20 -arylalkyl or C 7 -C 20 -alkylaryl.
- Ci -20 hydrocarbyl group therefore includes Ci -20 alkyl, C 2-20 alkenyl, C 2-20 alkynyl, C 3-2 o cycloalkyl, C 3-2 o cycloalkenyl, C 6-2 o aryl groups, C 7-2 o alkylaryl groups or C 7-2 o arylalkyl groups or of course mixtures of these groups such as cycloalkyl substituted by alkyl.
- Ci -20 hydrocarbyl groups are Ci -20 alkyl, C 4-20 cycloalkyl, C 5-2 o cycloalkyl-alkyl groups, C 7-20 alkylaryl groups, C 7-20 arylalkyl groups or C 6-2 o aryl groups.
- R are the same and are a Ci-Cio-hydrocarbyl or C 6 -Ci 0 -aryl group, like methyl, ethyl, propyl, isopropyl, tertbutyl, isobutyl, C 5- 6-cycloalkyl, cyclohexylmethyl, phenyl or benzyl, more preferably both R 8 are a CrC 4 -hydrocarbyl or C 6 -aryl group and most preferably both R 8 are a Ci-alkyl group.
- dimethylsilyl, dimethylsilanediyl and dimethylsililene are equivalent.
- metallocenes of formula (I) as described above include a new class of metallocenes, which are suitable for being used in the present invention, wherein in the formula (I)
- M is Zr
- X is CI or a methyl group
- L is a bridge of the formula -SiR 8 2 -, wherein both R 8 are the same CrC 4 -hydrocarbyl or Ce-aryl group,
- R 1 and R 1 are the same and are a linear or branched CrC 4 -alkyl group
- n 1 or 2
- R 2 and R 2 are the same and are a CH 2 -R 9 group, with R 9 being H or a CrC 3 -alkyl group, one of R 5 and R 6 or R 5' and R 6 form together an unsubstituted 5-6 membered ring condensed to the benzene ring of the indenyl moiety,
- R 5 and R 6 or R 5' and R 6 are for R 5 or R 5' a OR group, wherein R is a CrC 4 -alkyl group and for R 6 or R 6' a C(R 10 ) 3 group, with R 10 being the same and R 10 can be a CrC 2 -alkyl group.
- This new class of metallocenes is a further embodiment of the invention.
- ligands required to form the catalysts of the invention can be synthesised by any process and the skilled organic chemist would be able to devise various synthetic protocols for the manufacture of the necessary ligand materials.
- WO2007/1 16034 discloses the necessary chemistry and is herein incorporated by reference. Synthetic protocols can also generally be found in WO2002/02576, WO201 1/135004, WO2012/084961 , WO2012/001052 and WO201 1/076780.
- cocatalyst To form an active catalytic species it is normally necessary to employ a cocatalyst as is well known in the art.
- the present invention requires the use of an aluminoxane cocatalyst and an optionally an additional boron containing cocatalyst.
- the aluminoxane cocatalyst can be one of formula (II):
- n is usually from 6 to 20 and R has the meaning below.
- Aluminoxanes are formed on partial hydrolysis of organoaluminum compounds, for example those of the formula AIR 3 , AIR 2 Y and AI2R 3 Y 3 where R can be, for example, C1 -C10 alkyl, preferably C1 -C5 alkyl, or C3-10-cycloalkyl, C7-C12 -arylalkyl or alkylaryl and/or phenyl or naphthyl, and where Y can be hydrogen, halogen, preferably chlorine or bromine, or C1 -C10 alkoxy, preferably methoxy or ethoxy.
- the resulting oxygen-containing aluminoxanes are not in general pure compounds but mixtures of oligomers of the formula (I).
- the preferred aluminoxane in the process according to the invention is methylaluminoxane (MAO). Since the aluminoxanes used according to the invention as cocatalysts are not, owing to their mode of preparation, pure compounds, the molarity of aluminoxane solutions hereinafter is based on their aluminium content. It has been surprisingly found however, that in the context of heterogeneous catalysis, where catalysts are not supported on any external carrier or supported as described above, that in specific cases higher activities can be achieved if a boron based cocatalyst is also employed as a cocatalyst.
- Preferred aluminium alkyi compounds are triethylaluminium, tri-isobutylaluminium, tri- isohexylaluminium, tri-n-octylaluminium and tri-isooctylaluminium.
- the present invention includes preferably the use of boron cocatalysts together with aluminoxanes rather than the combination of these simple aluminium alkyls and boron cocatalysts.
- Boron based cocatalysts of interest include boron compounds containing a borate 3 + ion, i.e. borate compounds. These compounds generally contain an anion of formula:
- Z is an optionally substituted phenyl derivative, said substituent being a halo-Ci -6 -alkyl or halo group.
- Preferred options are fluoro or trifluoromethyl.
- the phenyl group is perfluorinated.
- Such ionic cocatalysts preferably contain a non-coordinating anion such as tetrakis(pentafluorophenyl)borate.
- Suitable counterions are protonated amine or aniline derivatives or phosphonium ions. These may have the general formula (IV) or (V): NQ 4 + (IV) or PQ 4 + (V) where Q is independently H, Ci -6 -alkyl, C 3- 8 cycloakyl, phenylCi -6 -alkylene- or optionally substituted Ph. Optional substituents may be C1 -6-alkyl, halo or nitro. There may be one or more than one such substituent. Preferred substituted Ph groups include therefore para- substituted phenyl, preferably tolyl or dimethylphenyl.
- Preferred phenyl-Ci -6 -alkyl- groups include benzyl.
- Suitable counterions therefore include: methylammonium, anilinium, dimethylammonium, diethylammonium, N-methylanilinium, diphenylammonium, N,N-dimethylanilinium, trimethylammonium, triethylammonium, tri-n-butylammonium, methyldiphenylammonium, p- bromo-N,N- dimethylanilinium or p-nitro-N,N-dimethylanilinium, especially dimethylammonium or N,N-dimethylanilinium.
- pyridinium is a further option.
- Phosphonium ions of interest include triphenylphosphonium, triethylphosphonium, diphenylphosphonium, tri(methylphenyl)phosphonium and tri(dimethylphenyl)phosphonium.
- a more preferred counterion is trityl (CPh 3 + ) or analogues thereof in which the Ph group is functionalised to carry one or more alkyl groups.
- Highly preferred borates of use in the invention therefore comprise the tetrakis(pentafluorophenyl)borate ion.
- Preferred ionic compounds which can be used according to the present invention include: tributylammoniumtetra(pentafluorophenyl)borate,
- N,N-dimethylaniliniumtetrakis(pentafluorophenyl)borate It has been surprisingly found that certain boron cocatalysts are especially preferred. Preferred borates of use in the invention therefore comprise the trityl ion. Thus the use of ⁇ , ⁇ -dimethylammonium-tetrakispentafluorophenylborate and Ph 3 CB(PhF 5 ) 4 and analogues therefore are especially favoured .
- both cocatalysts, an aluminoxane and a boron based cocatalyst are used in the catalyst system of the present invention.
- the molar ratio of boron to the metal ion of the metallocene may be in the range 0.5:1 to 10:1 mol/mol, preferably 1 :1 to 10:1 , especially 1 :1 to 5:1 mol/mol.
- the molar ratio of Al in the aluminoxane to the metal ion of the metallocene may be in the range 1 :1 to 2000:1 mol/mol, preferably 10:1 to 1000:1 , and more preferably 50:1 to 500:1 mol/mol.
- the metallocene complex of the present invention is used in combination with the cocatalyst(s) as a catalyst system for the polymerization of ethylene and C-4-10 alpha-olefin comonomer in a high temperature solution polymerization process.
- the catalyst system of the invention can be used in non-supported form or in solid form.
- the catalyst system of the invention may be used as a homogeneous catalyst or heterogeneous catalyst.
- the catalyst system of the invention in solid form preferably in solid particulate form is free from an external carrier, however still being in solid form.
- the catalyst does not contain an external support, such as an inorganic support, for example, silica or alumina, or an organic polymeric support material.
- Non-supported catalyst systems suitable for the present invention can be prepared in solution, for example in an aromatic solvent like toluene, by contacting the metallocene (as a solid or as a solution) with the cocatalyst(s), for example methylaluminoxane and/or a borane or a borate salt previously in an aromatic solvent, or can be prepared by sequentially adding the dissolved catalyst components to the polymerization medium.
- the metallocene as a solid or as a solution
- cocatalyst(s) for example methylaluminoxane and/or a borane or a borate salt previously in an aromatic solvent
- a liquid/liquid emulsion system in order to provide the catalyst system of the invention in solid form but without using an external carrier, it is preferred if a liquid/liquid emulsion system is used.
- the process involves forming dispersing catalyst components (i) (the complex) and (ii) + optionally (iii) the cocatalysts) in a solvent, and solidifying said dispersed droplets to form solid particles.
- aluminoxan as well as boron based cocatalysts are used, it is particularly preferred if the aluminoxane is contacted with the metallocene before the borate is added. Both cocatalyst components and the metallocene are preferably present in one solution.
- the method involves preparing a solution of the catalyst components; dispersing said solution in an solvent to form an emulsion in which said one or more catalyst components are present in the droplets of the dispersed phase; immobilising the catalyst components in the dispersed droplets, in the absence of an external particulate porous support, to form solid particles comprising the said catalyst, and optionally recovering said particles.
- This process enables the manufacture of active catalyst particles with improved morphology, e.g. with a predetermined particle size, spherical shape, compact structure, excellent surface properties and without using any added external porous support material, such as an inorganic oxide, e.g. silica.
- the catalyst particles can have a smooth surface, they may be compact in nature and catalyst active components can be distributed uniformly thorough the catalyst particles.
- WO03/051934 which is herein incorporated by reference. All or part of the preparation steps can be done in a continuous manner. Reference is made to WO2006/069733 describing principles of such a continuous or semicontinuous preparation methods of the solid catalyst types, prepared via emulsion/solidification method.
- the formed catalyst preferably has good stability/kinetics in terms of longevity of reaction, high activity and the catalysts enable low ash contents.
- heterogeneous, non-supported catalysts i.e. "self-supported” catalysts
- some active catalyst components might leach out of the catalyst particles during slurry polymerization, whereby the original good morphology of the catalyst might be lost.
- These leached catalyst components are very active possibly causing problems during polymerization. Therefore, the amount of leached components should be minimized, i.e. all catalyst components should be kept in heterogeneous form.
- the self-supported catalysts generate, due to the high amount of catalytically active species in the catalyst system, high temperatures at the beginning of the polymerization which may cause melting of the product material. Both effects, i.e. the partial dissolving of the catalyst system and the heat generation, might cause fouling, sheeting and deterioration of the polymer material morphology.
- prepolymerization in this regard is part of the catalyst preparation process, being a step carried out after a solid catalyst is formed. This catalyst prepolymerization step is not part of the actual polymerization configuration, which might comprise a conventional process prepolymerization step as well.
- a solid catalyst is obtained and used in polymerization.
- Catalyst "prepolymerization” takes place following the solidification step of the liquid-liquid emulsion process hereinbefore described. Prepolymerization may take place by known methods described in the art, such as that described in WO 2010/052263, WO 2010/052260 or WO 2010/052264. Preferable embodiments of this aspect of the invention are described herein.
- the polymer to be produced using the catalyst system of the invention is copolymer of ethylene and a C-4-10 alpha-olefin comonomer, like 1 -butene, 1 -hexene, 4-methyl-1 -pentene, 1 -octene etc.
- a C-4-10 alpha-olefin comonomer like 1 -butene, 1 -hexene, 4-methyl-1 -pentene, 1 -octene etc.
- butene, hexene or octene and more preferably octene is used as comonomer.
- the comonomer content in such a polymer may be up to 40 wt%, preferably between 5 to 40 wt%, more preferably 10 to 38 wt% and more preferable 15 to 36 wt%.
- the density (measured according to ISO 1 183-187) of the polymers is in the range of 0.850 g/cm 3 to 0.950 g/cm 3 , preferably in the range of 0.850 g/cm 3 to 0.945 g/cm 3 and more preferably in the range of 0.850 g/cm 3 to 0.940 g/cm 3 .
- Mw/Mn value of the polymers of the invention is less than 5, e.g. in the range of 2.0 to 4.5.
- the melting points (measured with DSC according to ISO 1 1357-3:1999) of the polymers to be produced are below 130°C, preferably below 120°C, more preferably below 1 10°C and most preferably below 100°C
- the catalyst system of the present invention is used to produce the above defined ethylene copolymers in a high temperature solution polymerization process at temperatures higher than 100°C.
- such process is essentially based on polymerizing the monomer and a suitable comonomer in a liquid hydrocarbon solvent in which the resulting polymer is soluble.
- the polymerization is carried out at a temperature above the melting point of the polymer, as a result of which a polymer solution is obtained.
- This solution is flashed in order to separate the polymer from the unreacted monomer and the solvent.
- the solvent is then recovered and recycled in the process.
- a solution polymerization process is known for its short reactor residence times (compared to Gas-phase or slurry processes) allowing, thus, very fast grade transitions and significant flexibility in producing a wide product range in a short production cycle.
- the used solution polymerization process is a high temperature solution polymerization process, using a polymerization temperature of higher than 100°C.
- the polymerization temperature is at least 1 10°, more preferably at least 150°C.
- the polymerization temperature can be up to 250°C.
- the pressure in the used solution polymerization process according to the invention is preferably in a range of 10 to 100 bar, preferably 15 to 100 bar and more preferably 20 to 100 bar.
- the liquid hydrocarbon solvent used is preferably a C 5 -i 2 -hydrocarbon which may be unsubstituted or substituted by Ci- 4 alkyl group such as pentane, methyl pentane, hexane, heptane, octane, cyclohexane, methylcyclohexane and hydrogenated naphtha. More preferably unsubstituted C 6 -io-hydrocarbon solvents are used.
- a known solution technology suitable for the process according to the invention is the COMPACT technology.
- the new catalyst systems comprising component (i), (ii) and optionally (iii) can be advantageously used for ethylene copolymerization in high temperature solution polymerization process.
- the catalyst systems according to the present invention show excellent productivity, excellent comonomer incorporation and thermal stability if used for ethylene copolymerization in high temperature solution polymerization process.
- the polymers made by the catalyst system of the invention are useful in all kinds of end articles such as pipes, films (cast, blown films), fibers, moulded articles (e.g. injection moulded, blow moulded, rotomoulded articles), extrusion coatings and so on.
- end articles such as pipes, films (cast, blown films), fibers, moulded articles (e.g. injection moulded, blow moulded, rotomoulded articles), extrusion coatings and so on.
- the elemental analysis of a catalyst was performed by taking a solid sample of mass, m.
- the catalyst was deactivated by substituting the inert storing conditions with ambient air, first passively through a needle and the actively by applying vacuum three times to the sampling container.
- Samples were dissolved to a volume V by first cooling on dry ice while adding freshly deionised water (5% of V) and nitric acid (HN0 3 , 65 %, 5 % of V).
- the samples were transferred in full to volumetric flasks using deionised water and rinsing the sampling containers.
- Hydrofluoric acid HF, 40 %, 3 % of V
- the prepared sample solutions were left to stabilise for two hours.
- Thermo Elemental iCAP 6300 Inductively Coupled Plasma - Optical Emission Spectrometer (ICP-OES) which was calibrated using a blank (a solution of 5 % HN03, 5 % HF in deionised water), and 6 standards of 0.5 ppm, 1 ppm, 10 ppm, 50 ppm, 100 ppm and 300 ppm of Al, with 0.5 ppm, 1 ppm, 5 ppm, 20 ppm, 50 ppm and 100 ppm of B and P in solutions of 5 % HN03, 3 % HF in deionised water.
- ICP-OES Inductively Coupled Plasma - Optical Emission Spectrometer
- a quality control sample (20 ppm Al, 5 ppm B, P in a solution of 5 % HN03, 3 % HF in Dl water) is run to confirm the reslope.
- the QC sample is also run after every 5th sample and at the end of a scheduled analysis set.
- the reported values are an average of three successive aliquots taken from the same sample and are related back to the original catalyst by inputting the original mass of sample, m, and the dilution volume, V, into the software.
- T m melting point
- T c crystallization temperature
- NMR nuclear-magnetic resonance
- Quantitative 13 C ⁇ 1 H ⁇ NMR spectra were processed, integrated and quantitative properties determined using custom spectral analysis automation programs. All chemical shifts are internally referenced to the bulk methylene signal ( ⁇ +) at 30.00 ppm ⁇ randall89 ⁇ .
- Characteristic signals resulting from consecutive 1 -octene incorporation i.e. EEOOEE comonomer sequences, were also observed. Such consecutive 1 -octene incorporation was quantified using the integral of the signal at 40.48 ppm assigned to the ⁇ 6 ⁇ 6 sites accounting for the number of reporting sites per comonomer:
- Characteristic signals resulting from saturated end-groups were observed. Such saturated end-groups were quantified using the average integral of the two resolved signals at 22.84 and 32.23 ppm.
- the 22.84 ppm integral is assigned to the unresolved signals corresponding to both 2B6 and 2S sites of 1 -octene and the saturated chain end respectively.
- the 32.23 ppm integral is assigned to the unresolved signals corresponding to both 3B6 and 3S sites of 1 -octene and the saturated chain end respectively.
- To compensate for the influence of the 2B6 and 3B6 1 -octene sites the total 1 -octene content is used:
- the ethylene comonomer content was quantified using the integral of the bulk methylene (bulk) signals at 30.00 ppm. This integral included the ⁇ and 4B6 sites from 1 -octene as well as the ⁇ + sites. The total ethylene comonomer content was calculated based on the bulk integral and compensating for the observed 1 -octene sequences and end-groups:
- Etotai (1/2) * [ Ibuik + 2 * 0 + 1 * 00 + 3 ⁇ 0 + 0 * 000 + 3 * S ]
- GPC Molecular weight averages, molecular weight distribution, and polydispersity index (M n , M W! M w /M n )
- GPC Gel Permeation Chromatography
- a Waters GPCV2000 instrument equipped with differential refractive index detector and online viscosimeter was used with 2 x GMHXL-HT and 1 x G7000HXL-HT TSK-gel columns from Tosoh Bioscience and 1 ,2,4-trichlorobenzene (TCB, stabilized with 250 mg/L 2,6-Di tert butyl-4-methyl-phenol) as solvent at 140 °C and at a constant flow rate of 1 mL/min. 209.5 ⁇ of sample solution were injected per analysis.
- the column set was calibrated using universal calibration (according to ISO 16014-2:2003) with at least 15 narrow MWD polystyrene (PS) standards in the range of 1 kg/mol to 12 000 kg/mol.
- PS narrow MWD polystyrene
- MAO was purchased from Chemtura and used as a 30 wt-% solution in toluene.
- Triphenylcarbeniumtetrakis(pentafluorophenyl)borate (alternative name trityl tetrakis- (pentafluorophenyl)borate) (CAS 136040-19-2) was purchased from Acros (tritylBF20) 1 -octene as co-monomer (99%, Sigma Aldrich) was dried over molecular sieves and degassed with nitrogen before use.
- Heptane and decane (99.9 %, Sigma Aldrich) were dried under molecular sieves and degassed with nitrogen before use.
- Tetrahydrofurane (Merck), ether (Merck), and dimethoxyethane (Acros) freshly distilled from benzophenone ketyl were used.
- Dichloromethane (Merck) for organometallic synthesis as well as CD 2 CI 2 (Deutero GmbH) for NMR experiments were dried and kept over CaH 2 .
- Toluene (Merck), n-octane (Merck), and hexanes (Merck) for organometallic synthesis were kept and distilled over Na/K alloy.
- Dichlorodimethylsilane (Merck) and methacrylic acid (Acros) were distilled before use.
- the organic layer was separated, the aqueous layer was additionally extracted with 100 ml of dichloromethane.
- the combined organic extract was evaporated to dryness to give a colorless oil.
- the organic layer was separated, the aqueous layer was extracted with 2 x 50 ml of dichloromethane.
- the combined organic extract was dried over K 2 C0 3 and then passed through a short layer of silica gel 60 (40-63 ⁇ ).
- the silica gel layer was additionally washed by 100 ml of dichloromethane.
- the combined organic elute was evaporated to dryness to give 15.7 g (99%) of a white crystalline product which was further used without an additional purification
- the resulting mixture was stirred overnight at room temperature and then poured onto 2000 cm 3 of crushed ice.
- the organic layer was separated; the aqueous layer was extracted with 3 x 300 ml of dichloromethane.
- the combined organic extract was washed with aqueous K 2 C0 3 , dried over K 2 C0 3 , passed through a short pad of silica gel 60 (40-63 ⁇ ), and then evaporated to dryness.
- the crude product (ca. 264 g) was recrystallised from 3000 ml of hot n-hexane to yield the title product of ca. 95% purity. This material was further recrystallized from 2400 ml of hot n-hexane.
- the obtained solution was decanted from an excess of KOH, the latter was additionally washed by 3 x 350 ml of dichloromethane.
- the combined organic extract was washed with 3000 ml of water.
- the organic layer was separated, and the aqueous layer was extracted with 3 x 300 ml of dichloromethane.
- the combined organic extract was washed with 7 x 1500 ml of water, dried over Na 2 S0 4 , and then evaporated to dryness.
- This procedure gave 121 g (99%) of 4,8-dibromo-1 -methoxy-2- methyl-1 , 2, 3, 5, 6,7-hexahydro-s-indacene as a colorless thick oil slowly crystallized at room temperature.
- the final material is a mixture of two stereoisomers.
- the combined organic extract was dried over K 2 C0 3 and then passed through a short layer of silica gel 60 (40-63 ⁇ ).
- the silica gel layer was additionally washed with 50 ml of dichloromethane.
- the combined organic elute was evaporated to dryness, and the crude product was distilled under reduced pressure to give 87.2 g (92.9%) of 4-bromo-1 -methoxy-2-methyl-1 , 2, 3, 5, 6,7-hexahydro-s- indacene (bp 147-150°C/4 mm Hg) as a colorless liquid consisting of a mixture of two stereoisomers in a ca. 55:45 ratio.
- the resulting light-orange solution was cooled to -50°C, and then 5.63 g (24.2 mmol) of ZrCI 4 was added. This mixture was stirred for 24 h at room temperature. The resulting orange suspension was evaporated to dryness. The residue was dissolved in 250 ml of warm toluene, and the resulting hot suspension was filtered through a glass frit (G4). On the evidence of NMR spectroscopy the obtained filtrate included a ca. 1 to 1 mixture of anti- and syn-zirconocenes. This filtrate was concentrated to ca. 90 ml.
- Metallocene complex content of off-line prepolymerized catalyst 0.696 wt.%
- Off-line pre-polymerization experiment was done in a 125 mL pressure reactor equipped with gas-feeding lines and an overhead stirrer. Dry and degassed perfluoro-1 .3- dimethylcyclohexane (15 cm 3 ) and 0.6855 g of the catalyst produced in the step 1 , to be pre- polymerized, were loaded into the reactor inside a glove box and the reactor was sealed. The reactor was then taken out from the glove box and placed inside a water cooled bath kept at 25 °C. The overhead stirrer and the feeding lines were connected and stirring speed set to 450 rpm. The experiment was started by opening the propylene feed into the reactor.
- the total pressure in the reactor was raised to about 5 bar and held constant by propylene feed via mass flow controller until the target degree of polymerization was reached (DP « 4.0).
- the reaction was stopped by flashing the volatile components. Inside glove box, the reactor was opened and the content poured into a glass vessel.
- the perfluoro-1.3- dimethylcyclohexane was evaporated until a constant weight was obtained to yield 3.42 g of the pre-polymerized ICS-1 catalyst.
- Examples IE-1 , IE-5 and CE-1 the polymerization reaction were carried out in a 480 ml_ pressure reactor at 1 10°C.
- Examples IE-2, IE-3 and IE-4 the polymerization reaction were carried out in Parallel Polymerization Reactors (PPR) (provided by Symyx) (10 mL Reactor Volume) at 190°C Polymerization procedure IE-1 , IE-5 and CE-1 :
- PPR Parallel Polymerization Reactors
- the catalyst systems ICS-1 and ICS-5 were used and as Comparative Example the catalyst system CCS-1 was used (all prepared as described above)
- Ethylene/1 -octene solution polymerizations were performed according to the following procedure in heptane at 1 10°C without H 2 .
- First 1 -octene was fed into the reactor by means of a Waters HPLC pump in the desired amounts, then 200 mL heptane by means of 10 mL syringe.
- the stirring speed was set to 150 rpm.
- 50 ⁇ of triethylaluminium (TEA) (as a scavenger) as a 0.5 mol/L solution in heptane was fed into the reactor.
- the reactor temperature was set to 1 10°C.
- the samples were stabilized with 2500 ppm Irganox B225 (dissolved in acetone).
- Table 3 pre-catalyst preparation of the selected metallocenes.
- the vessels were loaded inside a glovebox utilizing a 3-axis liquid handling robot.
- a pre- weighed glass vial with stirring paddles was sealed and purged with nitrogen.
- a volume of about 4 mL of corresponding solvent (decane) was filled in each PPR reactor.
- adequate amount of triethyl aluminium (TEA) as scavenger was added, along with precise volume of octene as co-monomer at room temperature.
- the ethylene pressure was set to 10 bar to check any leaks.
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KR1020167031917A KR102355323B1 (en) | 2014-04-17 | 2015-04-15 | Improved catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process |
US15/304,638 US10167355B2 (en) | 2014-04-17 | 2015-04-15 | Catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process |
RU2016142451A RU2693453C2 (en) | 2014-04-17 | 2015-04-15 | Improved catalyst system for producing polyethylene copolymers in high-temperature solution polymerisation method |
EP15715303.2A EP3131934B1 (en) | 2014-04-17 | 2015-04-15 | Improved catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process |
JP2016562807A JP6734783B2 (en) | 2014-04-17 | 2015-04-15 | Improved catalyst system for producing polyethylene copolymers by high temperature solution polymerization method |
ES15715303T ES2770021T3 (en) | 2014-04-17 | 2015-04-15 | Improved catalytic system to produce polyethylene copolymers in a high temperature solution polymerization process |
CN201580020147.XA CN106459278B (en) | 2014-04-17 | 2015-04-15 | Improved catalyst system for the preparation of polyethylene copolymers in a high temperature solution polymerization process |
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Also Published As
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JP2017511418A (en) | 2017-04-20 |
TWI547507B (en) | 2016-09-01 |
RU2693453C2 (en) | 2019-07-03 |
KR20160147835A (en) | 2016-12-23 |
KR102355323B1 (en) | 2022-01-25 |
RU2016142451A3 (en) | 2018-10-30 |
JP6734783B2 (en) | 2020-08-05 |
EP3131934A2 (en) | 2017-02-22 |
EP3131934B1 (en) | 2020-01-22 |
WO2015158790A3 (en) | 2016-01-28 |
US10167355B2 (en) | 2019-01-01 |
RU2016142451A (en) | 2018-05-17 |
ES2770021T3 (en) | 2020-06-30 |
CN106459278A (en) | 2017-02-22 |
CN106459278B (en) | 2020-11-06 |
US20170037165A1 (en) | 2017-02-09 |
TW201605913A (en) | 2016-02-16 |
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