-
1.发明授权
公开(公告)号：US5770678A
公开(公告)日：1998-06-23
申请号：US762813
申请日：1996-12-09
IPC分类号： C07D307/06 , C07D307/08 , C07F7/00 , C07F17/00 , C08G63/42 , C08G63/58 , C08G63/685 , C08G65/16 , C08G65/18 , C08G65/20 , C08G65/26 , C08G65/32 , C08G65/321 , C08G65/323 , C08G65/337 , C08G4/00
CPC分类号： C07D307/08 , C07D307/06 , C07F17/00 , C07F7/006 , C08G63/42 , C08G63/58 , C08G63/6856 , C08G65/16 , C08G65/18 , C08G65/20 , C08G65/2645 , C08G65/2648 , C08G65/266 , C08G65/32 , C08G65/321 , C08G65/323 , C08G65/337
摘要： A process for polymerizing oxiranes, oxetanes, oxepanes, dioxolanes, trioxanes, and tetrahydrofurans to their respective polymers by contacting them with a selected metal compound is disclosed; and also a process for depolymerizing polytetrahydrofurans to monomeric tetrahydrofurans by contacting the polymer with a selected metal compound at a temperature of about 100.degree. C. to about 250.degree. C. The catalysts may be in solution or part of a heterogeneous solid, and selected organic compounds are used as accelerators in the polymerizations. The polymeric products, some of which are novel, may be used as polyether monomers for further polymerization, as by reaction with isocyanates to produce polyurethanes, and other useful polymers. Some of the polymeric products are relatively high in molecular weight and are suitable for direct use, for instance as spandex fibers.
-
公开(公告)号：US08686209B2
公开(公告)日：2014-04-01
申请号：US13390540
申请日：2010-08-17
申请人： Joel David Citron
发明人： Joel David Citron
CPC分类号： C07D213/53 , C07C2/32 , C07C2531/22 , C08F10/00 , C08F4/7042 , C07C11/02
摘要： In an α-olefin manufacturing process by the oligomerization of ethylene using an iron complex of a diimine of a 2,6-diacylpyridine or a 2,6-pyridinecarboxaldehyde, in which certain substituted iminoaryl groups are present, less higher molecular weight unwanted products are produced when the diimine and/or its precursor arylamine does not have impurities with substitution on a second ortho position to the imino group. This leads to less fouling of the process apparatus and higher yields of desired α-olefins.
摘要翻译： 在使用2,6-二酰基吡啶或2,6-吡啶甲醛的二亚胺的铁络合物的烯烃低聚的α-烯烃制备方法中，其中存在某些取代的亚氨基芳基，较不高分子量的不需要的产物是 当二亚氨基和/或其前体芳基胺在亚氨基的第二邻位上不具有取代的杂质时产生。 这导致加工装置的结垢减少和所需α-烯烃的较高产率。
-
公开(公告)号：US06861545B2
公开(公告)日：2005-03-01
申请号：US10494060
申请日：2002-12-12
申请人： Joel David Citron
发明人： Joel David Citron
CPC分类号： C07C29/09 , C07C29/68 , C07F5/062 , C07C31/32 , C07C31/125
摘要： Higher trialkylaluminum compounds may be made by forming α-olefin by oligomerizing ethylene using a transition metal containing catalyst, reacting the α-olefins formed with a lower trialkylaluminum compound to form higher trialkylaluminum compound(s) These may optionally be oxidized, as with oxygen, to form higher trialkoxyaluminum compound, which in turn may be hydrolyzed to α-alcohols. In one variation of the process lower α-olefins and higher (relatively) α-alcohols may be formed and isolated. Higher trialkylaluminum compounds and α-alcohols are useful as chemical intermediates, while lower α-olefins are useful as monomers for polyolefins.
摘要翻译： 高级三烷基铝化合物可以通过使用含过渡金属的催化剂使乙烯低聚形成α-烯烃来制备α-烯烃，使由低级三烷基铝化合物形成的α-烯烃反应形成较高级的三烷基铝化合物。这些可以任选地与氧一起被氧化， 以形成较高的三烷氧基铝化合物，其又可以水解成α-醇。 在该方法的一个变化方案中，可以形成和分离低级α-烯烃和较高（相对）的α-醇。 较高的三烷基铝化合物和α-醇可用作化学中间体，而低级α-烯烃可用作聚烯烃的单体。
-
公开(公告)号：US06555631B1
公开(公告)日：2003-04-29
申请号：US09672612
申请日：2000-09-28
申请人： Lin Wang , Maria Spinu , Joel David Citron
发明人： Lin Wang , Maria Spinu , Joel David Citron
IPC分类号： C08F464
CPC分类号： C08F10/02 , C08F4/61904 , C08F4/65912 , C08F4/65916 , C08F4/65927 , C08F10/00 , C08F110/02 , C08L23/0815 , C08L2205/02 , C08L2314/06 , C08F4/025 , C08L2666/04 , C08F2500/10 , C08F2500/04 , C08F4/7042
摘要： Blends of two or more polyethylenes are made by reacting ethylene with an oligomerization catalyst that forms &agr;-olefins, and two polymerization catalysts, one of which under the process conditions copolymerizes ethylene and &agr;-olefins, and the other of which under process conditions does not readily copolymerize ethylene and &agr;-olefins. The blends may have improved physical properties and/or processing characteristics.
摘要翻译： 两种或更多种聚乙烯的共混物是通过乙烯与形成α-烯烃的低聚催化剂反应制得的，两种聚合催化剂，其中一种在工艺条件下共聚乙烯和α-烯烃，另一种在工艺条件下不是 容易使乙烯和α-烯烃共聚。 共混物可具有改善的物理性能和/或加工特性。
-
公开(公告)号：US06232259B1
公开(公告)日：2001-05-15
申请号：US09277910
申请日：1999-03-29
IPC分类号： B01J3100
CPC分类号： C07F15/065 , C07F15/0066 , C07F15/025 , C07F15/045 , C08F10/00 , C08F110/02 , C08F4/7006
摘要： Transition metal imine complexes can be prepared by reacting the imine precursors, a carbonyl compound and a primary amine, in the presence of a selected transition metal compound. The complexes may be used as catalysts for olefin polymerization.
-
6.发明授权Process for removing vanadium catalyst residues from polymer solutions 失效从聚合物溶液中除去VANADIUM催化剂残留物的方法
公开(公告)号：US3962199A
公开(公告)日：1976-06-08
申请号：US554224
申请日：1975-02-28
申请人： Joel David Citron
发明人： Joel David Citron
CPC分类号： C08F6/02
摘要： Removal of dissolved vanadium catalyst residues from .alpha.-olefin polymer solutions improves the heat stability of the polymer recovered therefrom. Vanadium residues are removed from .alpha.-olefin polymer solutions in inert solvents by contacting the solutions at 50.degree.-225.degree.C. with one or more active metals, either in their elemental form or as alloys, selected from alkali metals, aluminum, and zinc, and separating the solutions from vanadium residues precipitated thereby. The process can be carried out continuously by passing the polymer solution through a column containing the active metal.
-
公开(公告)号：US08916664B2
公开(公告)日：2014-12-23
申请号：US13576741
申请日：2011-03-28
IPC分类号： C08F4/80 , C08F4/70 , C08F110/02
CPC分类号： C08F4/70 , C08F4/7042 , C08F110/02 , C08F2500/09 , C08F2500/02 , C08F4/61904
摘要： An ethylene oligomerization catalyst that oligmerizes ethylene to a series of α-olefins and that has a Schulz-Flory constant of about 0.75 to 0.995 produces a stream of α-olefins. This stream is then added to a vessel containing ethylene and a copolymerization catalyst that copolymerizes ethylene and α-olefins. The resulting branched polyethylene often has good processing properties. The good processing is presumably due to the presence of “long chain branching”. Such polymers are useful for films and other packaging materials, and for molding resins for molding parts such as industrial, automotive or electrical parts.
摘要翻译： 将乙烯稀释成一系列α-烯烃并且具有约0.75至0.995的Schulz-Flory常数的乙烯低聚催化剂产生α-烯烃流。 然后将该物流加入含有乙烯的容器和共聚合乙烯与α-烯烃的共聚催化剂。 得到的支化聚乙烯通常具有良好的加工性能。 好的处理可能是由于存在“长链分支”。 这种聚合物可用于膜和其它包装材料，以及用于模制用于模制诸如工业，汽车或电气部件的部件的树脂。
-
公开(公告)号：US20130012659A1
公开(公告)日：2013-01-10
申请号：US13636205
申请日：2011-03-28
申请人： Joel David Citron
发明人： Joel David Citron
IPC分类号： C08F210/14 , C08F210/08
CPC分类号： C08F4/70 , C08F4/7042 , C08F110/02 , C08F2500/09 , C08F2500/02 , C08F4/61904
摘要： A lubricant component is a copolymer of ethylene and α-olefins made by forming a series of α-olefins by oligomerization of ethylene using an oligomerization catalyst, and then copolymerizing the α-olefins and ethylene using a transition metalcontaining polymerization catalyst. The copolymer, which often has a high Viscosity Index, may be used, for example, in a lubricant as the base oil or a viscosity index modifier. The polyolefin may also be a component of a lubricant additive, meant to be added to an already formulated lubricant to improve the lubricant's properties.
摘要翻译： 润滑剂组分是通过使用低聚催化剂通过乙烯低聚形成一系列α-烯烃制备的乙烯和α-烯烃的共聚物，然后使用含过渡金属的聚合催化剂共聚α-烯烃和乙烯。 通常具有高粘度指数的共聚物可以用于例如作为基础油的润滑剂或粘度指数调节剂。 聚烯烃也可以是润滑剂添加剂的组分，意在加入到已经配制的润滑剂中以改善润滑剂的性能。
-
公开(公告)号：US20120309915A1
公开(公告)日：2012-12-06
申请号：US13576724
申请日：2011-03-28
IPC分类号： C08F110/02 , C08F2/34 , C08F4/80
CPC分类号： C08F4/70 , C08F4/7042 , C08F110/02 , C08F2500/09 , C08F2500/02 , C08F4/61904
摘要： A polymerization to form a branched polyolefin, in which polymerization an ethylene copolymerization catalyst and an ethylene oligomerization catalyst form a series of ethylene oligomers that are α-olefins are both present, gives an improved polyethylene if the oligomerization catalyst has a to relatively high Schulz-Flory constant.
摘要翻译： 聚合形成支链聚烯烃，其中乙烯共聚催化剂和乙烯低聚催化剂的聚合形成一系列为α-烯烃的乙烯低聚物，如果低聚催化剂具有相对较高的Schulz- 风味常数。
-
公开(公告)号：US06822108B2
公开(公告)日：2004-11-23
申请号：US10494061
申请日：2004-04-28
申请人： Joel David Citron
发明人： Joel David Citron
IPC分类号： C07F506
摘要： Higher trialkylaluminum compounds may be made by forming &agr;-olefin by oligomerizing ethylene using a transition metal containing catalyst, reacting the &agr;-olefins formed with aluminum and hydrogen to form higher trialkylaluminum compounds. These may optionally be oxidized, as with oxygen, to form higher trialkoxyaluminum compound, which in turn may be hydrolyzed to &agr;-alcohols. Higher trialkylaluminum compounds and &agr;-alcohols are useful as chemical intermediates.
-
-
-
-
-
-
-
-
-
搜索结果
37 条记录 (耗时 0.027 秒)
