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61.发明申请公开(公告)号：US20080065360A1
公开(公告)日：2008-03-13
申请号：US11827684
申请日：2007-07-13
CPC分类号： C08F10/00 , C08F210/16 , C08F2400/02 , C08F2/00 , C08F2/34 , C08F210/08 , C08F210/14
摘要： In some embodiments, a method including the steps of: during a polymerization reaction producing a polymer resin in a fluid bed reactor, measuring reaction parameters including at least reactor temperature, at least one property of the resin, and amount of at least one condensable diluent gas in the reactor; determining from at least one measured resin property using a predetermined correlation, a dry melt initiation temperature value for a dry version of the polymer resin; and during the reaction, using a melt initiation temperature depression model to determine in on-line fashion a reduced melt initiation temperature for the resin (e.g., a temperature at which the resin is expected to begin to melt) in the presence of the at least one condensable diluent gas in the reactor.
摘要翻译： 在一些实施方案中，一种方法包括以下步骤：在聚合反应期间在流化床反应器中制备聚合物树脂，测量反应参数至少包括反应器温度，树脂的至少一种性质和至少一种可冷凝稀释剂 反应堆中的气体; 使用预定的相关性从至少一种测量的树脂性质确定干燥型聚合物树脂的干熔体起始温度值; 并且在反应期间，使用熔体起始温度下降模型以在线方式确定在至少存在下存在的树脂的降低的熔融起始温度（例如，树脂预期开始熔化的温度） 一个可冷凝的稀释气体在反应器中。
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公开(公告)号：US07122607B2
公开(公告)日：2006-10-17
申请号：US11132863
申请日：2005-05-19
申请人： Robert O. Hagerty , Kevin B. Stavens , Marc L. DeChellis , D. Brett Fischbuch , James M. Farley
发明人： Robert O. Hagerty , Kevin B. Stavens , Marc L. DeChellis , D. Brett Fischbuch , James M. Farley
IPC分类号： C08F2/34
CPC分类号： C08F210/16 , Y10S526/901 , C08F2/34 , C08F2/005 , C08F210/14 , C08F2500/12
摘要： The present invention relates to a continuous gas phase process comprising polymerizing one or more hydrocarbon monomer(s) in a fluidized bed reactor in the presence of catalyst system or polymerization catalyst and a condensable fluid for a period of at least 12 hours where the bed temperature is less than the Critical Temperature and the dew point temperature of the gas composition in the reactor is within 25° C. of the bed temperature.
摘要翻译： 本发明涉及连续气相方法，其包括在催化剂体系或聚合催化剂和可冷凝流体存在下在流化床反应器中聚合一种或多种烃单体至少12小时的时间，其中床温 小于临界温度，反应器中气体组成的露点温度在床温25℃以内。
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63.发明授权Process and system for preventing pressure tap fouling in tandem polymerization reactors 失效用于防止串联聚合反应器中的压力堵塞的方法和系统
公开(公告)号：US5688865A
公开(公告)日：1997-11-18
申请号：US941345
申请日：1992-09-04
申请人： Ahmed H. Ali , Robert O. Hagerty
发明人： Ahmed H. Ali , Robert O. Hagerty
CPC分类号： C08F10/02 , B01J8/26 , C08L23/06 , C08L23/0815 , B01J2219/0004 , C08F210/16 , C08L2308/00 , C08L2314/02
摘要： A process and system for prevention of fouling of pressure taps in a first gas phase fluidized bed polymerization reactor while avoiding sheeting during production of polyolefins in a second downstream gas phase fluidized bed polymerization reactor wherein a relatively small amount of water is added directly to the pressure taps of the first reactor.
摘要翻译： 一种防止第一气相流化床聚合反应器中的压力阱污垢的方法和系统，同时避免在第二下游气相流化床聚合反应器中生产聚烯烃期间的片材，其中相对少量的水直接加到压力 第一反应堆的水龙头。
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64.发明授权Process for polymerizing alpha-olefins with trimethylaluminum-activated catalyst 失效用三甲基铝活化催化剂聚合α-烯烃的方法
公开(公告)号：US5055533A
公开(公告)日：1991-10-08
申请号：US384045
申请日：1989-07-24
IPC分类号： C08F10/00
CPC分类号： C08F10/00 , Y10S526/901
摘要： A catalyst composition for polymerizing alpha-olefins is prepared by reacting a transition metal compound, e.g., titanium, with trimethylaluminum catalyst activator. In a preferred embodiment, the catalyst is supported on a porous refractory support and is prepared by additionally reacting a magnesium compound or an organomagnesium composition with the support.Also disclosed is a process for polymerizing alpha-olefins in the presence of the catalyst of the invention. The polymer products have higher bulk density and produce films of greater strength than polymers prepared with similar catalysts utilizing different alkyl-aluminum activators, e.g., triethylaluminum and tri-isobytylaluminum.
摘要翻译： 用于聚合α-烯烃的催化剂组合物通过使过渡金属化合物例如钛与三甲基铝催化剂活化剂反应来制备。 在优选的实施方案中，将催化剂负载在多孔耐火载体上，并且通过使镁化合物或有机镁组合物与载体另外反应来制备。 还公开了在本发明催化剂存在下聚合α-烯烃的方法。 聚合物产品具有较高的堆积密度并且产生比使用不同的烷基铝活化剂（例如三乙基铝和三异丁基铝）的类似催化剂制备的聚合物更强的膜。
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65.发明授权
公开(公告)号：US4666999A
公开(公告)日：1987-05-19
申请号：US737565
申请日：1985-05-23
CPC分类号： B01J8/1809 , B01J19/002 , C08F10/00 , B01J2208/00637 , B01J2219/00272
摘要： There is provided an improvement in a method for terminating a gas phase olefin polymerization reaction with a kill gas such as carbon monoxide or carbon dioxide. The improvement involves the use of a carrier gas to increase the rate of penetration of kill gas into the reaction medium. The improved method is particularly adaptable to a fluid bed reactor system.
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公开(公告)号：US4634752A
公开(公告)日：1987-01-06
申请号：US771740
申请日：1985-09-03
CPC分类号： C08F10/00
摘要： Alpha-olefin polymerization catalysts are prepared by heating a solid porous carrier having reactive OH groups in the atmosphere of an oxygen-containing gas. The resulting catalysts exhibit higher productivity and produce ethylene polymers or ethylene/C.sub.3 -C.sub.10 copolymers having higher bulk density than similar catalysts prepared with the carriers heated in an atmosphere of nitrogen.
摘要翻译： 通过在含氧气体的气氛中加热具有反应性OH基团的固体多孔载体来制备α-烯烃聚合催化剂。 所得到的催化剂表现出更高的生产率，并生产乙烯聚合物或具有比在氮气气氛中加热的载体制备的类似催化剂更高的堆积密度的乙烯/ C3-C10共聚物。
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公开(公告)号：US4568658A
公开(公告)日：1986-02-04
申请号：US647511
申请日：1984-09-05
CPC分类号： C08F10/00
摘要： A catalyst composition for polymerizing alpha-olefins in a gas phase continuous process is prepared by combining a catalyst precursor with a catalyst activator in such proportions that the polymer product comprises about 9.times.10.sup.-7 to about 18.times.10.sup.-7 gram-moles of the activator per gram of the polymer produced. The use of the activator in these proportions lowers the partial pressure of the monomers used in the process without sacrificing quality of the product. The catalyst precursor is prepared by reacting a carrier having OH groups with a stoichiometric excess, with respect to the OH groups, of an organomagnesium composition, and subsequently reacting the product with a transition metal compound.
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公开(公告)号：US4562169A
公开(公告)日：1985-12-31
申请号：US657642
申请日：1984-10-04
CPC分类号： C08F10/00
摘要： Alpha-olefin polymerization catalysts are prepared by heating a solid porous carrier having reactive OH groups in the atmosphere of an oxygen-containing gas. The resulting catalysts exhibit higher productivity and produce ethylene polymers of ethylene/C.sub.3 -C.sub.10 copolymers having higher bulk density than similar catalysts prepared with the carriers heated in an atmosphere of nitrogen.
摘要翻译： 通过在含氧气体的气氛中加热具有反应性OH基团的固体多孔载体来制备α-烯烃聚合催化剂。 得到的催化剂表现出更高的生产率，并且生产具有比在氮气气氛中加热的载体制备的类似催化剂具有更高堆积密度的乙烯/ C 3 -C 10共聚物的乙烯聚合物。
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