JP4700610B2 - エチレンの重合用の方法と装置 - Google Patents
エチレンの重合用の方法と装置 Download PDFInfo
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- JP4700610B2 JP4700610B2 JP2006523548A JP2006523548A JP4700610B2 JP 4700610 B2 JP4700610 B2 JP 4700610B2 JP 2006523548 A JP2006523548 A JP 2006523548A JP 2006523548 A JP2006523548 A JP 2006523548A JP 4700610 B2 JP4700610 B2 JP 4700610B2
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- ethylene
- downcomer
- reactor
- gas
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Description
a)エチレンを、任意に1以上の3〜12炭素原子を有するα−オレフィンコモノマー類と共に、気相反応器中、水素の存在下で重合させ、
b)エチレンと1以上の3〜12炭素原子を有するα−オレフィンコモノマー類とを、他の気相反応器中、工程a)より少ない水素の量の存在下で共重合させ、
そこで、前記気相反応器中の少なくとも1つで、成長するポリマー粒子が、急速な流動化または移送条件下で第1の重合ゾーン(上昇管)を通って上方に流動し、その上昇管を出て、ポリマー粒子が重力の作用下で下方に流動する第2の重合ゾーン(降下管)に入り、その降下管を出て、上昇管に再導入されて、前記2つの重合ゾーン間でポリマーの循環を確立する、
ことからなる。
分離ゾーン4'から、ポリマーは降下管2'に入り、一方ガス混合物は、圧縮手段7'により圧縮され、2つに分けられ、管路6'を通して集められる。その混合物の第1の部分は、管路28を通って濃縮器22に送られ、そこでモノマーと任意の不活性ガスが部分的に濃縮される温度に冷却される。その混合物の第2の部分は、冷却手段8'により冷却され、ついで管路9'を通って連結ゾーン5'と管路10'を通って上昇管1'の底部に供給される。分離容器24が濃縮器22の下流に設けられる。水素が多い分離されたガス混合物は、管路26を通ってリサイクル管路6'に循環される。一方、分離した液体は管路27を通って降下管2'に供給される。その液体は、容器24を便宜な高さに設け重力によるかまたはポンプ25のような何れかの適する手段により降下管2'に供給される。
好ましいエステル類は、C1〜C20の脂肪族カルボン酸のアルキルエステル類、特に酢酸エチル、ギ酸メチル、ギ酸エチル、酢酸メチル、酢酸プロピル、酢酸i-プロピル、酢酸n-ブチル、酢酸i-ブチルのような脂肪族モノカルボン酸のC1〜C8アルキルエステル類である。
その上、aが0であり、cが3であり、R2が分枝アルキルまたはシクロアルキル基であり、R3がメチルであるシリコン化合物も好ましい。このような好ましいシリコン化合物の例は、シクロヘキシルトリメトキシシラン、t-ブチルトリメトキシシランとテキシルトリメトキシシランである。
b)少なくともアルモキサン又はアルキルメタロセンカチオンを形成し得る化合物、
c)および任意に有機アルミニウム化合物。
[式中、Mは元素周期律表の4、5属またはランタノイドあるいはアクチノイド属に属する遷移金属であり:好ましくはMはジルコニウム、チタニウムまたはハフニウムであり;
pは金属Mの酸化状態マイナス2に等しい整数であり;
nは0または1であり;nが0のときには、ブリッジLは存在せず;
Lは1〜40の炭素原子を含有し、任意に5つまでの珪素原子を含有し、CpとAを橋かけする2価の炭化水素分子であり;
より好ましくはLはSi(CH3)2、SiPh2、SiPhMe、SiMe(SiMe3)、CH2、(CH2)2、(CH2)3またはC(CH3)2から選択され;
Cpは任意に、1以上の置換あるいは非置換、飽和、不飽和または芳香族環と結合した、置換または非置換シクロペンタジエニル基であり;
AはCpと同一意味であるか、またはNR7 (ここで、R7は1〜40の炭素原子含有の炭化水素基である)、-O、S分子である]。
の少なくとも1つのグループを含有する線状、分枝状または環状化合物であることが考えられる。
のアルモキサン類が線状化合物の場合に使用でき、また、式:
記述された性質は、次の方法に従って測定された。
メルトインデックスF(MIF):ASTM-D 1238、条件190/2,16
メルトインデックスP(MIP):ASTM-D 1238、条件190/2,15
度合の比(F/P):メルトインデックスFとメルトインデックスPとの比
密度:ASTM-D 792
曲げ弾性率(MEF):テストはASTM-D 790に従って行われた。
フルノッチクレープテスト(FNCT)による耐応力亀裂性:応力方向に垂直に4つの側面(side)にノッチしたポリマーサンプル(小さな棒10×10×100mm)を95℃でARCOPALの水溶液(2モル%)に浸した。4.5 MPaの一定負荷をサンプルに長手方向に付加し、破断時間を測定する。
固体触媒成分の製造
重合は、EP541760の7頁、1〜16行に記載の手法で作られた固形触媒成分を含むチグラー・ナッタ触媒の存在下で行われる。
実施例1〜3で、この発明の方法は、図1に示した2つの一連に結合した気相反応器からなるプラント中で連続条件下で行った。
プロピレンと予備重合した触媒を、図1の第1の気相重合反応器に管路12を介して供給した。エチレンは、第1反応器中で、分子量調整剤としてH2を使用し、不活性希釈材としてプロパンの存在下で重合させた。エチレン、水素とプロパンの量は、表1に特定される。第1反応器にコモノマーは供給されない。仕上げプロパン、エチレンと分子量調整剤としての水素が管路13を介して供給された。エチレンと水素も管路18を介して降下管2に直接供給された。第1反応器で作られたポリエチレン樹脂の性質を分析した。ポリエチレン樹脂は、約120 g/10分のメルトインデックスMIEを有しており、これはポリマーの比較的低分子量と0.968 kg/dm3の比較的高い密度を表している。第1反応器は、第1と第2反応器の両方で作られた最終ポリエチレン樹脂の全量に対し、約45重量%(スプリットwt%)を生産した。
この発明の方法を実施例と同じ構成と同じ重合触媒で行った。
相互連結した重合ゾーンを有する正に1つの気相重合反応器からなる装置を利用した。その反応器は、図1に示した題2の気相反応器と同じ構成を有する。
固形触媒成分の製造
約3モルのアルコールを含有するマグネシウムクロリドとアルコールとの付加物を、米国特許第4,399,054号の実施例2に記載の方法に従い、しかし1000RPMの代わりに2000RPMで操作し作った。付加物は、アルコールの重量含量が25%に達するまで、窒素気流中、50〜150℃の温度範囲での熱処理に付した。
工程構成
実施例5〜7で、流動床反応量と図2に示した相互連結した重合ゾーンを有する気相反応器からなるプラント中連続条件下で行った。
プロピレンで予備重合した触媒を、管路34を介して流動床反応器に供給した。その反応器中、エチレンを不活性希釈剤としてプロパンの存在下に水素で重合した。エチレン、水素とプロパンの量は表1に特定される。第1の反応器にコモノマーは供給しなかった。仕上げプロパン、エチレンと分子量調整剤としての水素を、管路36を介して供給した。
この発明の方法を実施例5と同じ装置と重合触媒で行った。
この発明の方法を実施例5と同じ装置と重合触媒を用いて行った。
Claims (5)
- 次の工程:
a)エチレンを、任意に1以上の3〜 12の炭素原子を有するα−オレフィン系コモノマー類と共に、気相反応器中水素の存在下で重合させ、
b)エチレンと1以上の3〜12の炭素原子を有するα−オレフィンコモノマー類とを、気相反応器中、共重合させ、
そこで、成長するポリマー粒子が、急速な流動化または移送条件下で第1の重合ゾーン(上昇管)を通って上方に流動し、その上昇管を出て、ポリマー粒子が重力の作用下で下方に流動する第2の重合ゾーン(降下管)に入り、
その降下管を出て、上昇管に再導入されて、前記2つの重合ゾーン間でポリマーの循環を確立し、
工程b)の反応器が、工程a)より少ない水素の量の存在下で操作され、そして
ガス及び/又は液体混合物(この混合物は、前記上昇管に存在するガス混合物の組成とは異なる組成を有する)を前記降下管に供給することにより、前記上昇管と前記降下管内でモノマー類とH 2 濃度の異なる条件を確立する、
エチレンの重合触媒の存在下で重合させることによる広い分子量のポリエチレンの製造方法。 - 工程b)の前記降下管中の水素/エチレンモル比が0.005〜0.2の間であり、エチレン濃度が1〜20容量%である請求項1に記載の方法。
- 工程b)の前記降下管中のコモノマー濃度が前記降下管中に存在するガスの全容量に基づいて、0.3〜5容量%である請求項1または2に記載の方法。
- 工程b)の前記上昇管中の水素/エチレンモル比が0.05〜0.3の間であり、エチレン濃度が5〜15容量%である請求項1〜3の何れか1つに記載の方法。
- 工程b)の前記上昇管中のコモノマー濃度が前記上昇管中に存在するガスの全容量に対して0.1〜3.0容量%である請求項1〜4の何れか1つに記載の方法。
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PCT/EP2004/008063 WO2005019280A1 (en) | 2003-08-20 | 2004-07-19 | Process and apparatus for the polymerization of ethylene |
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FR3083129B1 (fr) | 2018-06-28 | 2021-06-11 | Ifp Energies Now | Procede d'oligomerisation d'ethylene avec enchainement reacteur agite gaz/liquide et reacteur piston |
KR102340690B1 (ko) | 2018-09-20 | 2021-12-17 | 바젤 폴리올레핀 게엠베하 | 필름용 폴리에틸렌 조성물 |
US10781273B2 (en) | 2018-12-27 | 2020-09-22 | Chevron Phillips Chemical Company Lp | Multiple reactor and multiple zone polyolefin polymerization |
US20240301104A1 (en) * | 2021-06-24 | 2024-09-12 | Borealis Ag | Use of a swelling agent in multi-stage polyolefin production |
WO2023001541A1 (en) | 2021-07-23 | 2023-01-26 | Basell Polyolefine Gmbh | Polyethylene composition for blow molding having high swell ratio, impact resistance and tensile modulus |
WO2024056729A1 (en) | 2022-09-15 | 2024-03-21 | Basell Polyolefine Gmbh | Polyethylene composition for blow molding having an improved swell behavior |
WO2024056725A1 (en) | 2022-09-15 | 2024-03-21 | Basell Polyolefine Gmbh | Polyethylene composition for blow molding having an improved swell behavior |
WO2024056727A1 (en) | 2022-09-15 | 2024-03-21 | Basell Polyolefine Gmbh | Polyethylene composition for blow molding having an improved swell behavior |
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- 2004-07-19 CA CA002551017A patent/CA2551017A1/en not_active Abandoned
- 2004-07-19 EP EP04741145A patent/EP1656398B1/en not_active Expired - Lifetime
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- 2004-07-19 DE DE602004003590T patent/DE602004003590T2/de not_active Expired - Lifetime
- 2004-07-19 US US10/568,739 patent/US7514508B2/en active Active
- 2004-07-19 KR KR1020067003393A patent/KR101124187B1/ko active IP Right Grant
- 2004-07-19 CN CN200480030566A patent/CN100582125C/zh not_active Expired - Lifetime
- 2004-07-19 AT AT04741145T patent/ATE347569T1/de not_active IP Right Cessation
- 2004-07-19 WO PCT/EP2004/008063 patent/WO2005019280A1/en active IP Right Grant
- 2004-07-19 JP JP2006523548A patent/JP4700610B2/ja not_active Expired - Lifetime
- 2004-07-19 RU RU2006108546/04A patent/RU2337925C2/ru active
- 2004-08-23 SA SA4250263A patent/SA04250263B1/ar unknown
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JPS5880309A (ja) * | 1981-11-06 | 1983-05-14 | Idemitsu Petrochem Co Ltd | 多段重合によるポリエチレンの製造方法 |
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JPH11228635A (ja) * | 1997-11-28 | 1999-08-24 | Idemitsu Petrochem Co Ltd | ポリエチレン系重合体、その製造方法及び該重合体からなるパイプとその継手 |
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Also Published As
Publication number | Publication date |
---|---|
US7514508B2 (en) | 2009-04-07 |
CN100582125C (zh) | 2010-01-20 |
SA04250263B1 (ar) | 2008-04-16 |
CA2551017A1 (en) | 2005-03-03 |
KR101124187B1 (ko) | 2012-03-28 |
WO2005019280A1 (en) | 2005-03-03 |
EP1656398B1 (en) | 2006-12-06 |
BRPI0413229B1 (pt) | 2015-05-05 |
EP1656398A1 (en) | 2006-05-17 |
KR20060083412A (ko) | 2006-07-20 |
DE602004003590D1 (de) | 2007-01-18 |
CN1867596A (zh) | 2006-11-22 |
JP2007502874A (ja) | 2007-02-15 |
ES2278326T3 (es) | 2007-08-01 |
BRPI0413229A (pt) | 2006-10-03 |
ATE347569T1 (de) | 2006-12-15 |
US20070093621A1 (en) | 2007-04-26 |
RU2006108546A (ru) | 2006-07-27 |
RU2337925C2 (ru) | 2008-11-10 |
DE602004003590T2 (de) | 2007-09-27 |
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