JP5922794B2 - スラリーループ重合による高粉末密度のオレフィン重合体の製造方法 - Google Patents
スラリーループ重合による高粉末密度のオレフィン重合体の製造方法 Download PDFInfo
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- JP5922794B2 JP5922794B2 JP2014546408A JP2014546408A JP5922794B2 JP 5922794 B2 JP5922794 B2 JP 5922794B2 JP 2014546408 A JP2014546408 A JP 2014546408A JP 2014546408 A JP2014546408 A JP 2014546408A JP 5922794 B2 JP5922794 B2 JP 5922794B2
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- -1 inorganic acid salt Chemical class 0.000 claims description 23
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 20
- 239000011651 chromium Substances 0.000 claims description 20
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- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 125000002877 alkyl aryl group Chemical group 0.000 description 2
- 125000005427 anthranyl group Chemical group 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
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- 239000013522 chelant Substances 0.000 description 2
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
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- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
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- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
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- GBXQPDCOMJJCMJ-UHFFFAOYSA-M trimethyl-[6-(trimethylazaniumyl)hexyl]azanium;bromide Chemical compound [Br-].C[N+](C)(C)CCCCCC[N+](C)(C)C GBXQPDCOMJJCMJ-UHFFFAOYSA-M 0.000 description 2
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- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 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
- 239000003643 water by type Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- 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
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/02—Ethene
-
- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/02—Ethene
-
- 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
-
- 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
- C08F2/12—Polymerisation in non-solvents
- C08F2/14—Organic medium
-
- 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
- C08F4/06—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
- C08F4/22—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of chromium, molybdenum or tungsten
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
- Polymerization Catalysts (AREA)
Description
(a)プロトン性極性溶媒又は非プロトン性極性溶媒に、有機又は無機クロム化合物を含む均一溶液を製造するステップ
(b)(a)から得た前記溶媒を噴霧乾燥シリカ材と接触させるステップ
(c)前記固体から前記溶媒を取り除くステップ
(d)前記固体を350〜1050℃の温度、好ましくは400〜950℃の温度にて、酸化条件下で焼成するステップ
前記の方法は、ステップ(b)〜(d)のうち少なくとも一つのステップにおいて、固体は、二つの主固体断片の組み合わせからなり、当該主固体断片において、一方のd50は15〜40μm、他方のd50は45〜80μmであることを特徴とする。
の式により算出することができる。ここで、P90は直径の値であり、総粒子のうち90%がそれ未満の直径を有していることを意味する。P10は直径の値であり、総粒子のうち10%がそれ未満の直径を有していることを意味する。P50は直径の値であり、総粒子のうち50%がそれ未満の直径を有していることを意味する。本発明の目的によれば、両方の触媒断片に対して上記の式によりPSDを算出した場合、それぞれのPSDは1.8未満であることが好ましく、1.2未満であることが更に好ましい。なお、触媒粒子の全ての断片に対するd10の値は15μm未満となる。
密度:ISO1183
固有粘度η:ISO1628(温度130℃、濃度0.001g/ml、デカリン)
Izod衝撃靱性:ISO180/A
モル質量Mw、Mn、Mw/Mn:DIN55672に基づく方法を用いる高温ゲル浸透クロマトグラフィー。溶媒は1,2,4−トリクロロベンゼン。流速は140℃で1ml/min。矯正(calibration)はWaters150CでPE基準に従って実行。
表面積、細孔容積:BET技術を用いた窒素吸着(S.Brunnauer et al.、J of Am.Chem.Soc.60、209−319頁,1929)。
粉末密度:DIN53468(重合体粉末から測定する)
MFR2、MFR21:ISO1133による溶融流速。温度190℃、負荷2.16kg、又は21.6kg。
ふるい分析(重合体):DIN53477
粒度分布(触媒、担持材):ISO13320−2009、他にISO9276−1、9276−2、9276−4、ISO14887及び14488
灰含有量:マイクロ波燃焼炉で800℃にて10分間行う重合体焼却によって得た灰を計量して判断する。
(1)触媒の製造
平均粒径55μmの噴霧乾燥シリカA(Grace社のXPO2107)3kgをダブルコーンドライヤー(double−cone dryer)に載置する。240gのCr(NO3)39H2Oを10lの攪拌ガラス容器で1−プロパノール2.5lに攪拌して溶解させる。Zr(IV)プロポキシド(n−プロパノールに溶解させた70%濃度の無色溶液)314gを添加すると、本来藍色だった溶液がいきなり緑色に変わる。溶液をダブルコーンドライヤーに徐々に送り込む、攪拌ガラス容器をn−プロパノール0.5lで洗浄し、8rmpで懸濁液を1時間混合させる。混合後、触媒前駆体を減圧下で外部温度120℃にて8時間乾燥させる。
ステップ(1)から得た触媒前駆体を520〜850℃で活性化させる。触媒前駆体の総質量を基準として、ケイフッ化アンモニウム(ASF)2.5重量%を粉末形状で添加する。活性化のために、触媒前駆体を所望の活性化温度まで加熱し、当該温度を5時間維持した後、窒素下で350℃未満の温度まで冷却する。詳細な条件は、表1を参照すること。
50m3PFループ反応器を用いて、イソブタンでの懸濁工程として重合を行う。溶融流速(MFR)と密度はヘキセン濃度又はエテン濃度により設定される。重合は99℃〜107℃の反応器温度で行われた。反応器圧力は4.5MPaだった。
重合条件を表1にまとめた。
(1)触媒の製造
実施例1と同様の方法で担持体を製造する。但し、シリカA(Grace社のXPO2107)の代わりに、平均粒径25μmの噴霧乾燥シリカB(Grace社のXPO2485)を用いた。
実施例1と類似する方法で活性化を行う。詳細な条件は、表1を参照すること。
実施例1と同様の方法で重合を行う。詳細な条件は、表1を参照すること。
実施例1の触媒(ステップ(1)の後)を実施例2の触媒(ステップ(1)後)と1:1の比率で混合する。総d10値は10.95μmであった。
実施例1と類似する方法で活性化を行う。詳細な条件は、表1を参照すること。
実施例1及び実施例2と同様の方法で重合を行う。詳細な条件は、表1を参照すること。
(a)触媒の製造
実施例1と同様の方法で担持体を製造する。但し、シリカA(Grace社のXPO2107)の代わりに、平均粒径35μmの噴霧乾燥シリカC(Sylopol社のXPO2408)を用いた。
実施例1と類似する方法で活性化を行う。詳細な条件は、表1を参照すること。
Claims (10)
- 担持クロム触媒の存在下で、スラリーループ重合又は共重合により、エチレン単重合体又は共重合体を製造する方法であって、
前記担持クロム触媒は、反応済み触媒の成分を基準として、0.01〜5重量%のクロム含有量を有し、更に、前記触媒のISO13320−2009に基づき測定した粒度分布は二つの主断片からなり、一方の断片のd50は15〜40μm、他方の断片のd50は45〜80μmであり、総d10値は20μm未満であることを特徴とする、方法。 - 前記総d10値は15μm未満であることを特徴とする、請求項1に記載の方法。
- 前記二つの主断片のうち一方のd50は20〜30μm、他方のd50は45μm〜60μmであることを特徴とする、請求項1に記載の方法。
- 前記担持クロム触媒は、
(a)プロトン性極性溶媒又は非プロトン性極性溶媒に、有機又は無機クロム化合物を含む均一溶液を製造するステップ、
(b)ステップ(a)から得た前記溶液を噴霧乾燥シリカ材と接触させて固体である触媒前駆体を得るステップ、
(c)前記固体から前記溶媒を取り除くステップ、
(d)前記固体を350〜1050℃の温度にて酸化条件下で焼成するステップ、により製造される方法であって、
前記方法は、前記ステップ(b)〜(d)のうち少なくとも一つのステップにおいて、前記固体は、二つの主断片の組み合わせからなり、前記二つの主断片において、一方のd50は15〜40μm、他方のd50は45〜80μmであることを特徴とする、請求項1に記載の方法。 - 前記組み合わせは、前記ステップ(d)より先立って作り上げられ、
ここにおいて、第1材のd50は15〜40μm、第2材のd50は45〜80μmである、二つの噴霧乾燥シリカ担持材の組み合わせが製造されることを特徴とする、請求項4に記載の方法。 - 前記担持クロム触媒の存在下の重合は、100バール未満の圧力下でループ反応器において行われることを特徴とする、請求項1又は2に記載の方法。
- 前記担持クロム触媒の存在下の重合は、重合体を連続的に排出するループ反応器において行われることを特徴とする、請求項1〜6のうちいずれかに記載の方法。
- 前記重合体は≧500g/lの高いかさ密度を有し、そのうち1.5重量%未満は<125μmの微粒等級を示すことを特徴とする、請求項1〜7のうちいずれかに記載の方法。
- 用いられるクロム化合物は、3価クロムの有機酸塩又は無機酸塩、特に酢酸塩、シュウ酸塩、硫酸塩、或いは硝酸塩であることを特徴とする、請求項4に記載の方法。
- Zr化合物を更に用いることを特徴とする、請求項1〜9のうちいずれかに記載の方法。
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EP11194421.1A EP2607389A1 (en) | 2011-12-20 | 2011-12-20 | Process for preparing olefin polymer by slurry loop polymerization having high powder density |
US61/577,992 | 2011-12-20 | ||
PCT/EP2012/074303 WO2013092195A1 (en) | 2011-12-20 | 2012-12-04 | Process for preparing olefin polymer by slurry loop polymerization having high powder density |
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US11124586B1 (en) | 2020-11-09 | 2021-09-21 | Chevron Phillips Chemical Company Lp | Particle size control of metallocene catalyst systems in loop slurry polymerization reactors |
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US4182810A (en) | 1978-04-21 | 1980-01-08 | Phillips Petroleum Company | Prevention of fouling in polymerization reactors |
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