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1. 发明授权

US06833417B2 Processes for transitioning between chrome-based and mixed polymerization catalysts 有权
标题翻译：铬基和混合聚合催化剂之间过渡的方法
公开(公告)号：US06833417B2
公开(公告)日：2004-12-21
申请号：US10835412
申请日：2004-04-29
申请人： Fred David Ehrman , Mark Bradley Davis , Ronald Steven Eisinger , Mark Gregory Goode , Michael Allen Kinnan
发明人： Fred David Ehrman , Mark Bradley Davis , Ronald Steven Eisinger , Mark Gregory Goode , Michael Allen Kinnan
IPC分类号： C08F234
CPC分类号： C08F10/00 , C08F2/38 , C08F4/65912 , C08F4/65925 , C08F210/16 , C08F2410/05 , Y10S526/901 , C08F4/22 , C08F2/34 , C08F2/001 , C08F2/42 , C08F210/14 , C08F2500/18
摘要： A process of transitioning from a first polymerization reaction conducted in the presence of a mixed catalyst system to a second polymerization reaction conducted in the presence of a chrome-based catalyst system is disclosed, the polymerization reactions being conducted in one embodiment in a polymerization zone of a gas phase fluidized bed reactor which contains a fluidized bed of polymer particles by the essentially continuous passage of monomer gases through the polymerization zone, comprising: a) discontinuing the introduction of the mixed catalyst system into the reactor; b) maintaining polymerization conditions in the reactor and permitting polymerization to continue for a period of time to allow the components of the mixed catalyst system present in the reactor to produce additional polymer particles; c) introducing a deactivating agent into the fluidized bed in an amount sufficient to deactivate the mixed catalyst system; d) establishing optimal conditions within the reactor for the chrome-based catalyst system; and e) introducing the chrome-based catalyst system into the reactor characterized in that the amount of polymer particles in the fluidized bed is substantially maintained in the polymerization zone during the transition steps.
摘要翻译：公开了一种从在混合催化剂体系存在下进行的第一聚合反应转变为在铬基催化剂体系存在下进行的第二次聚合反应的过程，聚合反应在一个实施方案中在聚合反应区气相流化床反应器，其通过基本上连续通过单体气体通过聚合区域包含聚合物颗粒的流化床，包括：a）停止将混合催化剂体系引入反应器; b）保持聚合条件在反应器并允许聚合持续一段时间以允许存在于反应器中的混合催化剂体系的组分产生另外的聚合物颗粒; c）以足以使混合催化剂体系失活的量向流化床中引入失活剂 ; d）在反应器内为t建立最佳条件他的铬基催化剂体系; 将铬基催化剂体系引入到反应器中，其特征在于在过渡步骤期间流化床中的聚合物颗粒的量基本上保持在聚合区中。

2. 发明授权

US06858684B2 Processes for transitioning between various polymerization catalysts 有权
标题翻译：各种聚合催化剂之间过渡的方法
公开(公告)号：US06858684B2
公开(公告)日：2005-02-22
申请号：US10716041
申请日：2003-11-17
申请人： Ian D. Burdett , Ping P. Cai , Ronald Steven Eisinger , Mark Gregory Goode , F. David Hussein , Michael Allen Kinnan , Michael Elroy Muhle , James L. Swecker, II
发明人： Ian D. Burdett , Ping P. Cai , Ronald Steven Eisinger , Mark Gregory Goode , F. David Hussein , Michael Allen Kinnan , Michael Elroy Muhle , James L. Swecker, II
IPC分类号： B01J8/24 , C08F2/00 , C08F2/34 , C08F4/659 , C08F10/00 , C08F10/02 , C08F210/16
CPC分类号： C08F10/02 , B01J8/1872 , C08F4/65912 , C08F4/65916 , C08F210/16 , C08F2410/05 , Y10S526/901 , C08F10/00 , C08F4/65927 , C08F2/42 , C08F2/34 , C08F210/14 , C08F2500/12 , C08F2500/24
摘要： This invention relates to processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, the invention relates to processes for transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and chromium-based catalyst systems.
摘要翻译：本发明涉及在彼此不相容的聚合催化剂体系，优选催化剂体系中过渡的方法。特别地，本发明涉及使用齐格勒 - 纳塔催化剂体系，茂金属催化剂体系和铬基催化剂体系在烯烃聚合反应中过渡的方法。

3. 发明授权

US06833416B2 Methods of polymerizing olefin monomers with mixed catalyst systems 有权
标题翻译：烯烃单体与混合催化剂体系聚合的方法
公开(公告)号：US06833416B2
公开(公告)日：2004-12-21
申请号：US10788631
申请日：2004-02-27
申请人： Michael Allen Kinnan , Fred David Ehrman , Pradeep Pandurang Shirodkar , Mark Bradley Davis , Michele Lynn Grief-Rust
发明人： Michael Allen Kinnan , Fred David Ehrman , Pradeep Pandurang Shirodkar , Mark Bradley Davis , Michele Lynn Grief-Rust
IPC分类号： C08F238
CPC分类号： C08F10/00 , C08F4/65912 , C08F4/65916 , C08F4/65925 , C08F210/16 , C08F2410/05 , C08F4/65904 , C08F2/42 , C08F4/69 , C08F210/14 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F4/6546
摘要： A method of transitioning catalysts for polyolefin polymerization is provided. In one aspect, the process includes providing a polymerization reactor that includes a first catalyst system, contacting olefin monomers with the first catalyst system to form polyolefin in a first polymerization reaction and introducing a catalyst killer to the polymerization reactor in an amount sufficient to terminate the first polymerization reaction. The method further includes introducing a second catalyst system to the polymerization reactor in the presence of at least a portion of the catalyst killer, wherein the at least a portion of the catalyst killer is an amount sufficient to activate the second catalyst system and contacting olefin monomers with the second catalyst system to form polyolefin in a second polymerization reaction.
摘要翻译：提供了一种使聚烯烃聚合催化剂转化的方法。一方面，该方法包括提供聚合反应器，其包括第一催化剂体系，使烯烃单体与第一催化剂体系接触以在第一聚合反应中形成聚烯烃，并将催化剂杀菌剂以足以终止所述聚合反应器的量引入聚合反应器第一次聚合反应。该方法还包括在至少一部分催化剂杀菌剂的存在下将第二催化剂体系引入聚合反应器，其中至少一部分催化剂杀伤剂是足以活化第二催化剂体系并使烯烃单体接触的量第二催化剂体系在第二聚合反应中形成聚烯烃。

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