CN1025338C - 制备矾芳烃化物的改进方法 - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 23
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 30
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 30
- 229910021551 Vanadium(III) chloride Inorganic materials 0.000 claims abstract description 24
- HQYCOEXWFMFWLR-UHFFFAOYSA-K vanadium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[V+3] HQYCOEXWFMFWLR-UHFFFAOYSA-K 0.000 claims abstract description 24
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 23
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 125000002015 acyclic group Chemical group 0.000 claims abstract description 5
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 26
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 229910052720 vanadium Inorganic materials 0.000 claims description 21
- -1 vanadium arenes Chemical class 0.000 claims description 21
- 241001120493 Arene Species 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims description 7
- 239000011541 reaction mixture Substances 0.000 claims description 5
- 239000003085 diluting agent Substances 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical compound CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 229910016467 AlCl 4 Inorganic materials 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 150000001336 alkenes Chemical class 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 17
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 239000007787 solid Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- 229910021550 Vanadium Chloride Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910001511 metal iodide Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- RPESBQCJGHJMTK-UHFFFAOYSA-I pentachlorovanadium Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[V+5] RPESBQCJGHJMTK-UHFFFAOYSA-I 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
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Classifications
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- 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
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
-
- 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
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Steroid Compounds (AREA)
- Polyethers (AREA)
- Polymerisation Methods In General (AREA)
Abstract
钒芳烃化物[V芳烃)2]其中“芳烃”为苯或单-,二-,或多-(C1-C5)-烷基-取代的苯,通过下列方法制备:
(a)通过将三氯化钒、金属铝和三氯化铝在所选择的芳烃存在下互相进行反应,得到络合物:
[V(芳烃)2](+)·AlCl4(-)
(b)用环或无环液体脂肪醚处理所得到的络合物,使[V(芳烃)2](+)还原为[V(芳烃)2];和(c)回收所分离的钒芳烃化物。
钒芳烃化物适用于制备烯烃聚合的催化剂。
Description
本发明涉及制备钒芳烃化合物的改进方法。
钒芳烃化物为本领域中有用的化合物,尤其适用于制备烯烃聚合的催化剂。
因此,根据中国专利申请89107055.9(1989年9月9日),通过钒芳烃化物
与四氯化钛反应,得到固体催化剂成分。该催化剂成分和三烷基铝在乙烯聚合,或乙烯与C3-C10α-烯烃的共聚合中具有高活性。该反应在低压和低温下在悬浮液中进行,而当反应条件为高压、高温时,在管状反应器或应罐中进行,在高温下于溶液中进行。
制备钒芳烃化物的方法为已知技术,其记载于E.O.Fischer和H.S.KogLer的Chem.Ber.90250(1957)和F.Calderazzo的Inorg.Chem.3810(1964)中,用这些方法所得到的适用的反应产物的收率很低(总收率为15%),因此,从商业观点看其缺乏吸收力。
在中国专利申请90103521.1(1990年5月15日)中,记载了一种制备钒芳烃化物的方法,其包括:用金属或有机金属类化合物做还原剂,将钒芳烃碘化物还原,可通过氯化钒与金属
铝和三氯化铝反应,得到一缩合物。
随后用碱金属碘化物处理该缩合物得到钒芳烃碘化物,根据上述专利申请中的方法所得到的钒芳烃化物总收率为50%。
本申请人发现,根据本发明,钒芳烃化物可以通过简单且先进的方法制备,该方法易于在商业水平应用,至少在优选的条件下、可以使其具有高的反应收率。
如上所述,本发明涉及钒芳烃化物
的制备方法,其中,“芳烃”代表苯或单、二。或多-(C1-C5)-烷基取代的苯,其包括:
(a)通过将三氯化钒,金属铝和三氯化铝在选择的芳烃存在下反应,制备得到缩合物
(b)将所得到的缩合物用环或无环液体脂肪醚处理,使〔V(芳烃)2〕(+)还原为〔V(芳烃)2〕;及
(c)回收分离的钒芳烃。
本发明中生成钒芳烃化物的反应如下式表示:
在本发明方法的步骤(a)中,三氯化钒、金属铝、三氯化铝和芳烃在反应条件下互相接触混合,适用于该目的的芳烃例如:苯.甲苯,对二甲苯和1,3,5-三甲苯,其中,1,3,5-三甲苯为优选。
反应在优选三氯化铝∶三氯化矾的摩尔比为0.33∶1~2∶1,芳烃∶三氯化钒的摩尔比为2∶1~10∶1,金属铝原子∶三氯化钒的摩尔比为1∶1~5∶1中进行。当反应按下列摩尔比进行时,可得到最佳结果,即:三氯化铝∶三氯化钒为1∶1~2∶1,芳烃∶三氯化钒为4∶1~10∶1,金属铝原子∶三氯化钒为1∶1~2∶1。另外,在所说的(a)步骤中,反应在100℃~130℃范围内进行2-4小时,优选的反应温度和时间分别为120℃~130℃,和2-3小时。
在本发明方法的步骤(b)中,将环或无环脂肪液体醚加到步骤(a)的反应产物中,适用于该目的的醚为:四氢呋喃、乙醚、二甲氧基乙烷、二甘醇甲醚、其中,四氢呋喃为优选。所加入醚的量並不重要,但是,每100份重量的反应混合物,通常约有100~200份的醚用于该目的。在该反应步骤中,可将稀释剂,优选烃稀释剂,在反应条件下其为液体的、优选饱和脂肪烃稀释剂,如正庚烷、加到反应物中。用醚进行的处理可在0℃~50℃范围内进行,但反应优选在室温(20-25℃)进行。按常规,反应时间可在2~48小时,优选2~5小时。
在本发明步骤(C)中,由步骤(b)中得到的钒芳烃化物可按常规的分离技术从反应混合物中分离。例如,可从反应混合物中蒸发除去醚,和烃稀释剂,蒸馏残渣随后可以用能溶解钒芳烃化物的溶剂
处理,如:烃溶剂,尤其是脂肪烃溶剂如:正庚烷,由此获得的溶液可以通过过滤、或离心与固体的反应副产物分离,通过蒸发溶剂,或将溶液冷至低温使析出结晶,和/或通过加入非溶剂,回收得到钒芳烃化物。
由此得到的钒芳烃化物为固体产物,其熔点在100℃~300℃范围内。这些矾芳烃化物可与四氯化钛反应,得到固体催化剂成分,其与三烷基铝合并,在乙烯聚合或乙烯与C3-C10α-烯烃的共聚中具有高活性。该反应为低压、低温时,在混悬液中进行。而在高压、高温条件下,反应在管状反应器或反应罐中进行,在高温下,于溶液中进行。
为更详细地描述本发明,将下列实验实例报告于此。
实例1
将三氯化钒(5g,31.7mmol),铝粉(0.855g,31.7mmol),三氯化铝(1.42g,10.6mmol)和9.1ml(63.5mmol)1,3,5-三甲基苯的混合物装进配有温度计,搅拌棒和滴液漏斗的玻璃烧瓶中。
将混合物热至130℃,并在该温度下保持2小时,得到红棕色的混悬液,混悬液冷却至室温(20-25℃),加入10ml正庚烷和70ml无水四氢呋喃,所得到的混合物猛烈搅拌2小时,混合物浓缩干燥(0.1mmHg,50℃),将固体残余物重新混悬于无水正庚烷(130ml)中。
将混悬液过滤,得到澄清红棕色溶液,其含有3.87g(13.3mmol)钒-双-(1,3,5-三甲基苯)
〔V(1,3,5-三甲基苯)2〕
以相对于初加入三氯化钒的摩尔数表示,收率为42%。
实例2
将三氯化钒(5g,31.7mmol),铝粉(1.71g,63.3mmol),三氯化铝(1.42g,10.6mmol)和18.2ml(127mmol)的1,3,5-三甲基苯装进配有温度计、搅棒和滴液漏斗的玻璃烧瓶中。
将混合物加热至130℃並在该温度下保持2小时,得到棕红色混悬液,将该混悬液冷至室温(20-25℃),加入10ml正庚烷和70ml无水四氢呋喃,所得混合物猛烈搅拌3小时,随后浓缩干燥(0.1mmHg,50℃),将固体残余物重新混悬于无水正庚烷(50ml)中。
将混悬液过滤,得到澄清的红棕色溶液,其含有3.87g(13.3mmol)钒-双-(1,3,5-三甲基苯)
〔V(1,3,5-三甲基苯)2〕
以相对于初始装入的三氯化钒的摩尔数表示收率为42%。
实例3
将三氯化钒(5g,31.7mmol),铝粉(1.71g,63.3mmol),三氯化铝(4.22g,31.7mmol)和18.2ml(127mmol)的1,3,5-三甲基苯的混合物装进配有温度计、搅棒和滴液漏斗的玻璃烧瓶中。
将混合物加热至130℃,并在该温度下保持2小时,得到红棕色的混悬液,将该混悬液冷至室温(20-25℃),加入10ml正庚烷和60ml无水四氢呋喃,所得混合物猛烈搅拌3小时,将其浓缩干燥(0.1mmHg,50℃),所得固体残余物重新混悬于
60ml无水正庚烷。
将混悬液过滤,所得固体用正庚烷洗,得到总体积为127ml的澄清红棕色溶液,其含有8.3g(28.5mmol)矾-双-(1,3,5-三甲基苯)
〔V(1,3,5-三甲基苯)2〕
以相对于初始加入的三氯化钒的摩尔数表示收率为90%。
实例4
将三氯化钒(58.2g,0.37mol),铝粉(10g,0.37mol),三氯化铝(70g,0.52mol)和317ml(2.22mol)1,3,5-三甲基苯在氮气环境下装进0.5升的大玻璃试管中,侧面固定。
将混合物热至120-130℃,并在此温度下加热2小时,得到红棕色的混悬液,将该混悬液冷却至室温(20-25℃),加50ml正庚烷和300ml无水四氢呋喃,所得的混合物猛烈搅拌5小时,随后将其浓缩干燥(0.1mmHg,50℃),所得固体残余物重新混悬于无水正庚烷(60ml)中。
将混悬液过滤,固体用正庚烷洗,得到总体积为400ml的澄清红棕色溶液,该溶液再浓缩干燥,得到70g矾-双-(1,3,5-三甲基苯)
〔V(1,3,5-三甲基苯)2〕
以相对于初始装进的三氯化钒的摩尔数表示收率为65%。
实例5
将三氯化钒(4.6g,29mmol),铝粉(1.6g,
59mmol),三氯化铝(7.8g,58mmol)和40ml(279mmol)的1,3,5-三甲基苯在氮气环境下,装进容积为0.5升的大玻璃试管中,侧面固定。
混合物热至120-130℃,并在该温度下加热2小时,得到红棕色的混悬液,混悬液冷却至室温(20-25℃),加70ml正庚烷和70ml无水四氢呋喃,所得混合物剧烈搅拌48小时,随后将其浓缩干燥(0.1mmHg,50℃),所得固体残余物重新混悬于正庚烷(100ml)中。
将混悬液过滤,所得的澄清溶液浓缩到终体积为50ml,使其冷却至-78℃,并在该温度下冷却过夜,得到6.53g钒-双-(1,3,5-三甲基苯)
〔V(1,3,5-三甲基苯)2〕
以相对于初始装入的三氯化矾的摩尔数表示收率为77%。
Claims (10)
1、制备钒芳烃化物的方法
[V(苯烃)2]
其中“芳烃”为苯,甲苯或1,3,5-二甲基苯,其特征在于:
(a)在所选择的芳烃存在下,将三氯化钒、金属铝和三氯化铝按下面反应式进行反应:
3VCl3+2Al+AlCl3+2芳烃→[V(芳烃)2](+)AlCl4(-)(b)将所得的络合物在环或无环液体脂肪醚存在下,按下面反应式与金属铝反应:
(c)回收分离得到的钒芳烃化物。
2、权利要求1的方法,其特征在于:芳烃从苯、甲苯、对二甲苯和1,3,5-三甲基苯中选择,优选1,3,5-三甲基苯。
3、权利要求1的方法,其特征在于:在步骤(a)所进行的反应中,三氯化铝∶三氯化钒的摩尔比为0.33∶1~2∶1,芳烃∶三氯化钒的摩尔比为2∶1~10∶1,而金属铝原子∶三氯化钒的摩尔比为1∶1~5∶1。
4、权利要求3的方法,其特征在于:上述步骤(a)所进行的反应中,三氯化铝∶三氯化钒的摩尔比为1∶1~2∶1,芳烃∶三氯化钒的摩尔比为4∶1~10∶1,金属铝原子∶三氯化钒的摩尔比为1∶1~2∶1。
5、权利要求1的方法,其特征在于,上述步骤(a)所进行的反应中,温度范围为100℃~130℃,反应时间为2-4小时。
6、权利要求1的方法,其特征在于:上述步骤(a)中,反应温度和反应时间分别为120℃-130℃,和2-3小时。
7、权利要求1的方法,其特征在于:步骤(b)中,将环或无环脂肪液体醚加到(a)步骤中所得的反应产物中,其用量为每100份重量的反应混合物加100-200份醚,反应温度为0℃-50℃,优选在室温(20-25℃),反应时间为2-48小时,优选2-5小时。
8、权利要求7的方法,其特征在于:步骤(b)中,醚从四氢呋喃、乙醚、二甲氧基乙烷,和二甘醇甲醚中选择,优选四氢呋喃。
9、权利要求8的方法,其特征在于:在上述步骤(b)中,反应在液体烃稀释剂存在下进行,优选在饱和脂肪烃稀释剂存在下进行。
10、权利要求1的方法,其特征在于:步骤(c)中,醚和可能存在的烃稀释剂从步骤(b)的反应混合物中蒸发除去,为得到钒芳烃化物,将蒸发的残余物用溶剂处理,得到了含有钒芳烃化物的上述溶剂的溶液,通过蒸发溶剂或降低温度使结晶析出或加入非溶剂,溶液中分离得到钒芳烃化物。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT19111A/90 | 1990-01-19 | ||
IT01911190A IT1238071B (it) | 1990-01-19 | 1990-01-19 | Procedimento perfezionato per la produzione di vanadio areni |
Publications (2)
Publication Number | Publication Date |
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CN1053430A CN1053430A (zh) | 1991-07-31 |
CN1025338C true CN1025338C (zh) | 1994-07-06 |
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Application Number | Title | Priority Date | Filing Date |
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CN91100342A Expired - Fee Related CN1025338C (zh) | 1990-01-19 | 1991-01-19 | 制备矾芳烃化物的改进方法 |
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Country | Link |
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US (1) | US5093508A (zh) |
EP (1) | EP0437897B1 (zh) |
JP (1) | JP2916819B2 (zh) |
KR (1) | KR940005336B1 (zh) |
CN (1) | CN1025338C (zh) |
AT (1) | ATE127469T1 (zh) |
BR (1) | BR9100222A (zh) |
CA (1) | CA2033799C (zh) |
CZ (1) | CZ279742B6 (zh) |
DE (1) | DE69022207T2 (zh) |
DK (1) | DK0437897T3 (zh) |
ES (1) | ES2076301T3 (zh) |
GR (1) | GR3018259T3 (zh) |
IT (1) | IT1238071B (zh) |
RU (1) | RU2012562C1 (zh) |
SK (1) | SK278293B6 (zh) |
ZA (1) | ZA9195B (zh) |
Families Citing this family (3)
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IT1269805B (it) * | 1994-05-20 | 1997-04-15 | Enichem Spa | Catalizzatore per la (co)polimerizzazione dell'etilene e procedimento per il suo ottenimento |
IT1403290B1 (it) | 2010-12-27 | 2013-10-17 | Polimeri Europa Spa | Componente solido di catalizzatore, catalizzatore comprendente detto componente solido, e procedimento di (co)polimerizzazione delle alfa-olefine |
ITMI20121724A1 (it) | 2012-10-12 | 2014-04-13 | Versalis Spa | Catalizzatore a base di rutenio e suo impiego nell'idrogenazione selettiva di composti aromatici o poliinsaturi |
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US3531420A (en) * | 1966-10-19 | 1970-09-29 | Exxon Research Engineering Co | Tetrahalides of transition metals reduced with activated aluminum powder |
US4526724A (en) * | 1983-09-30 | 1985-07-02 | Standard Oil Company (Indiana) | Process for the preparation of zero valent bis-arene transition metal compounds |
IT1229737B (it) * | 1989-05-16 | 1991-09-07 | Enichem Anic Spa | Procedimento per la produzione di vanadio areni. |
-
1990
- 1990-01-19 IT IT01911190A patent/IT1238071B/it active IP Right Grant
- 1990-12-29 EP EP90203534A patent/EP0437897B1/en not_active Expired - Lifetime
- 1990-12-29 ES ES90203534T patent/ES2076301T3/es not_active Expired - Lifetime
- 1990-12-29 AT AT90203534T patent/ATE127469T1/de not_active IP Right Cessation
- 1990-12-29 DK DK90203534.4T patent/DK0437897T3/da active
- 1990-12-29 DE DE69022207T patent/DE69022207T2/de not_active Expired - Lifetime
-
1991
- 1991-01-04 US US07/641,877 patent/US5093508A/en not_active Expired - Lifetime
- 1991-01-04 ZA ZA9195A patent/ZA9195B/xx unknown
- 1991-01-08 CZ CS9134A patent/CZ279742B6/cs not_active IP Right Cessation
- 1991-01-08 SK SK34-91A patent/SK278293B6/sk not_active IP Right Cessation
- 1991-01-08 CA CA002033799A patent/CA2033799C/en not_active Expired - Lifetime
- 1991-01-17 KR KR1019910000722A patent/KR940005336B1/ko not_active IP Right Cessation
- 1991-01-18 RU SU914894349A patent/RU2012562C1/ru active
- 1991-01-18 JP JP3016920A patent/JP2916819B2/ja not_active Expired - Fee Related
- 1991-01-18 BR BR919100222A patent/BR9100222A/pt not_active IP Right Cessation
- 1991-01-19 CN CN91100342A patent/CN1025338C/zh not_active Expired - Fee Related
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1995
- 1995-11-30 GR GR950403372T patent/GR3018259T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
IT9019111A1 (it) | 1991-07-20 |
CA2033799C (en) | 2001-07-03 |
KR910014384A (ko) | 1991-08-31 |
ZA9195B (en) | 1991-10-30 |
IT9019111A0 (it) | 1990-01-19 |
RU2012562C1 (ru) | 1994-05-15 |
DE69022207D1 (de) | 1995-10-12 |
ATE127469T1 (de) | 1995-09-15 |
BR9100222A (pt) | 1991-10-22 |
CA2033799A1 (en) | 1991-07-20 |
CN1053430A (zh) | 1991-07-31 |
US5093508A (en) | 1992-03-03 |
GR3018259T3 (en) | 1996-02-29 |
CS9100034A2 (en) | 1991-09-15 |
DK0437897T3 (da) | 1995-12-18 |
KR940005336B1 (ko) | 1994-06-17 |
SK278293B6 (en) | 1996-08-07 |
DE69022207T2 (de) | 1996-04-18 |
IT1238071B (it) | 1993-07-03 |
EP0437897A3 (en) | 1991-12-11 |
EP0437897A2 (en) | 1991-07-24 |
ES2076301T3 (es) | 1995-11-01 |
EP0437897B1 (en) | 1995-09-06 |
JP2916819B2 (ja) | 1999-07-05 |
JPH04210988A (ja) | 1992-08-03 |
CZ279742B6 (cs) | 1995-06-14 |
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