JP6896744B2 - オリゴマーの製造方法および触媒 - Google Patents
オリゴマーの製造方法および触媒 Download PDFInfo
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- JP6896744B2 JP6896744B2 JP2018537266A JP2018537266A JP6896744B2 JP 6896744 B2 JP6896744 B2 JP 6896744B2 JP 2018537266 A JP2018537266 A JP 2018537266A JP 2018537266 A JP2018537266 A JP 2018537266A JP 6896744 B2 JP6896744 B2 JP 6896744B2
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- 239000003054 catalyst Substances 0.000 title claims description 66
- 238000004519 manufacturing process Methods 0.000 title claims description 35
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 46
- 150000001875 compounds Chemical class 0.000 claims description 24
- 239000000178 monomer Substances 0.000 claims description 21
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 20
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- 150000001336 alkenes Chemical class 0.000 claims description 17
- CPOFMOWDMVWCLF-UHFFFAOYSA-N methyl(oxo)alumane Chemical compound C[Al]=O CPOFMOWDMVWCLF-UHFFFAOYSA-N 0.000 claims description 17
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- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 14
- 125000003118 aryl group Chemical group 0.000 claims description 12
- 230000003606 oligomerizing effect Effects 0.000 claims description 7
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 5
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims 4
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 claims 4
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- 125000003342 alkenyl group Chemical group 0.000 description 10
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- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 8
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- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical compound CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 description 6
- 239000002808 molecular sieve Substances 0.000 description 5
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 5
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- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 0 Cc1cc(*)ccc1*1=C(*)c2cccc3*2*1**(c(c(C)c1)ccc1[N+]([O-])=O)=C3* Chemical compound Cc1cc(*)ccc1*1=C(*)c2cccc3*2*1**(c(c(C)c1)ccc1[N+]([O-])=O)=C3* 0.000 description 4
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- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- JLTDJTHDQAWBAV-UHFFFAOYSA-O dimethyl(phenyl)azanium Chemical compound C[NH+](C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-O 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 4
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- 150000002430 hydrocarbons Chemical class 0.000 description 4
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 4
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 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
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- 238000005406 washing Methods 0.000 description 4
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
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- 239000010687 lubricating oil Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
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- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 3
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
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- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910021577 Iron(II) chloride Inorganic materials 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N N-phenyl amine Natural products NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 125000006165 cyclic alkyl group Chemical group 0.000 description 2
- 125000001047 cyclobutenyl group Chemical group C1(=CCC1)* 0.000 description 2
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
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- QRUYYSPCOGSZGQ-UHFFFAOYSA-L cyclopentane;dichlorozirconium Chemical compound Cl[Zr]Cl.[CH]1[CH][CH][CH][CH]1.[CH]1[CH][CH][CH][CH]1 QRUYYSPCOGSZGQ-UHFFFAOYSA-L 0.000 description 2
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 2
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- SQBBHCOIQXKPHL-UHFFFAOYSA-N tributylalumane Chemical compound CCCC[Al](CCCC)CCCC SQBBHCOIQXKPHL-UHFFFAOYSA-N 0.000 description 2
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- KPJDDOVCRDRPBL-UHFFFAOYSA-N (2-benzoylpyridin-3-yl)-phenylmethanone Chemical compound C=1C=CN=C(C(=O)C=2C=CC=CC=2)C=1C(=O)C1=CC=CC=C1 KPJDDOVCRDRPBL-UHFFFAOYSA-N 0.000 description 1
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- YNLAOSYQHBDIKW-UHFFFAOYSA-M diethylaluminium chloride Chemical compound CC[Al](Cl)CC YNLAOSYQHBDIKW-UHFFFAOYSA-M 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
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- UAIZDWNSWGTKFZ-UHFFFAOYSA-L ethylaluminum(2+);dichloride Chemical compound CC[Al](Cl)Cl UAIZDWNSWGTKFZ-UHFFFAOYSA-L 0.000 description 1
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- 159000000014 iron salts Chemical class 0.000 description 1
- AQBLLJNPHDIAPN-LNTINUHCSA-K iron(3+);(z)-4-oxopent-2-en-2-olate Chemical compound [Fe+3].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O AQBLLJNPHDIAPN-LNTINUHCSA-K 0.000 description 1
- PVFSDGKDKFSOTB-UHFFFAOYSA-K iron(3+);triacetate Chemical compound [Fe+3].CC([O-])=O.CC([O-])=O.CC([O-])=O PVFSDGKDKFSOTB-UHFFFAOYSA-K 0.000 description 1
- LNOZJRCUHSPCDZ-UHFFFAOYSA-L iron(ii) acetate Chemical compound [Fe+2].CC([O-])=O.CC([O-])=O LNOZJRCUHSPCDZ-UHFFFAOYSA-L 0.000 description 1
- GYCHYNMREWYSKH-UHFFFAOYSA-L iron(ii) bromide Chemical compound [Fe+2].[Br-].[Br-] GYCHYNMREWYSKH-UHFFFAOYSA-L 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- CDGNLUSBENXDGG-UHFFFAOYSA-N meta-Cresidine Chemical compound COC1=CC=C(N)C(C)=C1 CDGNLUSBENXDGG-UHFFFAOYSA-N 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000003880 polar aprotic solvent Substances 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000003586 protic polar solvent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010898 silica gel chromatography Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VYNCPPVQAZGELS-UHFFFAOYSA-N toluene;trimethylalumane Chemical compound C[Al](C)C.CC1=CC=CC=C1 VYNCPPVQAZGELS-UHFFFAOYSA-N 0.000 description 1
- 150000003613 toluenes Chemical class 0.000 description 1
- FEONEKOZSGPOFN-UHFFFAOYSA-K tribromoiron Chemical compound Br[Fe](Br)Br FEONEKOZSGPOFN-UHFFFAOYSA-K 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- CNWZYDSEVLFSMS-UHFFFAOYSA-N tripropylalumane Chemical compound CCC[Al](CCC)CCC CNWZYDSEVLFSMS-UHFFFAOYSA-N 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
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Description
[式(1)中、Rは炭素数1〜6のヒドロカルビル基または炭素数6〜12の芳香族基を示し、同一分子中の複数のRは同一でも異なっていてもよく、R’は酸素原子および/または窒素原子を有する有機基を示し、同一分子中の複数のR’は同一でも異なっていてもよく、Yは塩素原子又は臭素原子を示す。]
[式(2)中、R’’は炭素数1〜6のヒドロカルビル基または炭素数6〜12の芳香族基を示し、同一分子中の複数のR’’は同一でも異なっていてもよく、R’’’は酸素原子および/または窒素原子を有する有機基を示し、同一分子中の複数のR’’’は同一でも異なっていてもよい。]
[式(1)中、Rは炭素数1〜6のヒドロカルビル基または炭素数6〜12の芳香族基を示し、同一分子中の複数のRは同一でも異なっていてもよく、R’は酸素原子および/または窒素原子を有する有機基を示し、同一分子中の複数のR’は同一でも異なっていてもよく、Yは塩素原子又は臭素原子を示す。]
(i)ジイミン化合物を溶解させた溶液に鉄の塩(以下、単に「塩」ということもある)を添加、混合する方法、
(ii)ジイミン化合物と塩とを、溶媒を用いずに物理的に混合する方法、
などが挙げられる。
(a)混合物に溶媒を使用した場合には溶媒を留去し、固形物をろ別する方法、
(b)混合物から生じた沈殿をろ別する方法、
(c)混合物に貧溶媒を加えて沈殿を精製させ、ろ別する方法、
(d)無溶媒混合物をそのまま取り出す方法、
などが挙げられる。この後、未反応のジイミン化合物を溶解可能な溶媒による洗浄処理、未反応の鉄の塩を溶解可能な溶剤による洗浄処理、適当な溶媒を用いた再結晶処理等を施してもよい。ジイミン化合物を溶解可能な溶媒としては、例えば、無水エーテル、テトラヒドロフラン、ベンゼン、トルエン、キシレン、シクロヘキサン、メチルシクロヘキサン等が挙げられる。鉄の塩を溶解可能な溶剤としては、アルコール系の溶媒、例えば、メタノール、エタノール、イソプロパノール等が挙げられるほか、テトラヒドロフラン等が挙げられる。
鉄錯体は、後述する合成例に示した方法で合成を行った。その際用いた試薬類は購入品をそのまま用いた。トリメチルアルミニウムは、東京化成製のトリメチルアルミニウムトルエン溶液をそのまま用いた。トリイソブチルアルミニウムは、日本アルキルアルミ製のものをトルエンで希釈して用いた。トリチルテトラキスペンタフルオロフェニルボレートは、東京化成製のものをそのまま用いた。ビス(シクロペンタジエニル)ジルコニウムジクロリドは、東京化成製のものをそのまま用いた。
高温GPC装置(ポリマーラボラトリーズ社製、商品名:PL−20)にカラム(ポリマーラボラトリーズ社製、商品名:PL gel 10μm MIXED−B LS)を2本連結し、示差屈折率検出器とした。試料5mgにオルトジクロロベンゼン溶媒5mlを加え、140℃で約1時間加熱撹拌した。このように溶解した試料を流速1ml/分、カラムオーブンの温度を140℃に設定して、測定を行った。分子量の換算は、標準ポリスチレンから作成した検量線に基づいて行い、ポリスチレン換算分子量を求めた。
得られたオリゴマーの重量を、仕込んだ触媒のモル数で割ることにより、触媒効率を算出した。
2−メチル−4−メトキシアニリン(2.0893g、15.3mmol、東京化成製)と2,6−ジアセチルピリジン(1.2429g、7.6mmol、東京化成製)、モレキュラーシーブ4A(5.0g)、触媒量のパラトルエンスルホン酸を乾燥トルエン(60ml)に分散し、ディーンスタークウォーターセパセーターを利用して、水を除去しながら24時間加熱還流しながら撹拌した。
13C−NMR(600MHz,CDCl3):16、18,56,116,119,122,125,129,137,138,143,156,167
FeCl2・4H2O(0.2401g、1.2mmol、関東化学製)を脱水テトラヒドロフラン(30ml、アルドリッチ製)に溶解し、先に合成したジイミン化合物(I)(0.4843g、1.2mmol)のテトラヒドロフラン溶液(10ml)を加えた。黄色のジイミン化合物を加えることで、瞬時に暗緑色のテトラヒドロフラン溶液となった。さらに、室温にて2時間撹拌した。反応液から溶媒を蒸発乾固させ、析出した固体を脱水エタノールでろ液に色がなくなるまで洗浄を続けた。さらに洗浄した固体を脱水ジエチルエーテルで洗浄し、溶媒を除去して鉄錯体を得た。得られた鉄錯体は、FD−MASSにて527.0820(計算値:527.0831)が得られたことから、下記鉄錯体(1a)の構造を示唆している。
電磁誘導撹拌機付きの660mlのオートクレーブをあらかじめ減圧下、110℃で充分に乾燥した。次に、窒素気流下で、乾燥トルエン(80ml)をオートクレーブに導入し、温度を10℃に調整した。
エチレンを連続的に導入する際のオートクレーブの温度を室温(25℃)としたこと以外は、実施例1と同様の操作を行った。触媒効率(C.E.)は1398kg Poly/Fe molであった。また、得られたオリゴマーのMnは370であり、Mw/Mnは1.3であった。
50mlナスフラスコ中で窒素気流下、製造例2で得られた鉄錯体(1μmol)とトリチルテトラキスペンタフルオロフェニルボレート(1μmol)を乾燥トルエン20mlに溶解し、溶液(A)とした。溶液(A)に、鉄錯体に対して500当量分のTMA溶液を加え、5分間撹拌して触媒を含む溶液(B)を得た。溶液(B)を、乾燥トルエンが導入されたオートクレーブに加え、10℃で0.19MPaのエチレンを連続的に導入した。30分後にエチレンの導入を止め、未反応のエチレンを除去し、窒素でオートクレーブ内のエチレンをパージし、ごく少量のエタノールを加えた。オートクレーブを開放し、内容物を200mlナスフラスコに移して、溶媒を減圧留去することで、半固形物のオリゴマーを得た。触媒効率(C.E.)は3276kg Poly/Fe molであった。また、得られたオリゴマーのMnは500であり、Mw/Mnは1.6であった。
溶液(B)の調製工程において、TMA溶液を、鉄錯体に対して100当量分加えたこと、以外は、実施例3と同様の操作を行った。触媒効率(C.E.)は6455kg Poly/Fe molであった。また、得られたオリゴマーのMnは460であり、Mw/Mnは1.6であった。
50mlナスフラスコ中で窒素気流下、製造例2で得られた鉄錯体(1μmol)を乾燥トルエン20mlに溶解し、溶液(A)とした。溶液(A)に、鉄錯体に対して500当量分のTMA溶液を加え、更に鉄錯体に対してアルミニウム原子として500当量分のメチルアルミノキサン(MAO)を加え、5分間撹拌して触媒を含む溶液(B)を得た。溶液(B)を、乾燥トルエンが導入されたオートクレーブに加え、40℃で0.19MPaのエチレンを連続的に導入した。30分後にエチレンの導入を止め、未反応のエチレンを除去し、窒素でオートクレーブ内のエチレンをパージし、ごく少量のエタノールを加えた。オートクレーブを開放し、内容物を200mlナスフラスコに移して、溶媒を減圧留去することで、半固形物のオリゴマーを得た。触媒効率(C.E.)は4908kg Poly/Fe molであった。また、得られたオリゴマーのMnは420であり、Mw/Mnは1.5であった。
溶液(B)の調製工程において、TMA溶液に代えて、鉄錯体に対して100当量分のトリイソブチルアルミニウム(TIBA)溶液を加えたこと、さらに、エチレンを連続的に導入する際のオートクレーブの温度を室温(25℃)としたこと以外は、実施例4と同様の操作を行った。触媒効率(C.E.)は482kg Poly/Fe molであった。また、得られたオリゴマーのMnは540であり、Mw/Mnは1.4であった。
電磁誘導撹拌機付きの20Lのオートクレーブをあらかじめ減圧下、110℃で充分に乾燥した。次に、窒素気流下で、乾燥トルエン(7.6L)をオートクレーブに導入し、温度を0℃に調整した。
溶液(B)に更にリガンドを添加しないこと、反応時間を920分としたこと以外は、実施例7と同様の操作を行った。触媒効率(C.E.)は57838kg Poly/Fe molであった。また、得られたオリゴマーのMnは530であり、Mw/Mnは1.6であった。
電磁誘導撹拌機付きの660mlのオートクレーブをあらかじめ減圧下、110℃で充分に乾燥した。次に、窒素気流下で、乾燥トルエン(80ml)をオートクレーブに導入し、温度を10℃に調整した。
電磁誘導撹拌機付きの660mlのオートクレーブをあらかじめ減圧下、110℃で充分に乾燥した。次に、窒素気流下で、乾燥トルエン(80ml)をオートクレーブに導入し、温度を10℃に調整した。
溶液(A)の調製工程において、製造例2で得られた鉄錯体に代えて、ビス(シクロペンタジエニル)ジルコニウムジクロリド(5.1μmol、Cp2ZrCl2)を用いたこと以外は、実施例1と同様の操作を行った。触媒効率(C.E.)は0kg Poly/Fe molであり、重合物を得ることができなかった。
Claims (10)
- 前記トリアルキルアルミニウムが、トリメチルアルミニウムを含む、請求項1に記載の製造方法。
- 前記触媒が、ホウ素化合物を更に含む、請求項1または2に記載の製造方法。
- 前記触媒が、メチルアルミノキサンを更に含む、請求項1〜3のいずれか一項に記載の製造方法。
- 前記トリアルキルアルミニウムが、トリメチルアルミニウムを含む、請求項6に記載の触媒。
- ホウ素化合物を更に含む、請求項6または7に記載の触媒。
- メチルアルミノキサンを更に含む、請求項6〜8のいずれか一項に記載の触媒。
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