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1. 发明申请

WO2015076928A2 METHODS FOR CONTROLLING POLYMER PROPERTIES 审中-公开
标题翻译：控制聚合物性能的方法
公开(公告)号：WO2015076928A2
公开(公告)日：2015-05-28
申请号：PCT/US2014/057427
申请日：2014-09-25
申请人： UNIVATION TECHNOLOGIES, LLC
发明人： GOODE, Mark, G. , ALEXANDRE, Francois , CANN, Kevin J. , KOPP, Barbara, J. , MATTHEWS, William, A. , MOORHOUSE, John, H. , MURE, Cliff, R.
IPC分类号： C08L23/08
CPC分类号： C08F210/16 , C08L23/08 , C08F210/14 , C08F2500/04 , C08F2500/07 , C08F2500/12 , C08F2500/13 , C08F4/24 , C08F2/34 , C08F4/025
摘要： Disclosed herein are methods of controlling polymer properties in polymerization processes that use a chromium-based catalyst. An embodiment discloses a method of producing a polyolefin comprising: contacting a reaction mixture and a reduced chromium oxide catalyst in a gas-phase reactor to produce the polyolefin, wherein the reaction mixture comprises a monomer and a co-monomer; and changing a reaction temperature in the gas- phase reactor by about 1° C or more whereby a gas molar ratio of the co-monomer to the monomer is changed by about 2% or more and a co-monomer content of the polyolefin at substantially constant density is changed by about 2% or more. Additional methods and compositions are also provided.
摘要翻译：本文公开了在使用铬基催化剂的聚合方法中控制聚合物性质的方法。一个实施方案公开了一种生产聚烯烃的方法，包括：使反应混合物和还原的氧化铬催化剂在气相反应器中接触以制备聚烯烃，其中反应混合物包含单体和共聚单体; 并且将气相反应器中的反应温度改变约1℃或更高，由此共聚单体与单体的气体摩尔比改变约2％以上，聚烯烃的共聚单体含量基本上恒定密度改变约2％以上。还提供了另外的方法和组合物。

2. 发明申请

WO2009088428A1 CATALYST FEED SYSTEMS AND METHODS FOR USING THE SAME 审中-公开
标题翻译：催化剂进料系统及其使用方法
公开(公告)号：WO2009088428A1
公开(公告)日：2009-07-16
申请号：PCT/US2008/013730
申请日：2008-12-15
申请人： UNIVATION TECHNOLOGIES, LLC , MATTHEWS, William, A. , HURDLE, Michael, I. , CORONA, Gerardo , LE, Dung, P. , GERCEK, Semra , SCHWARZ, George, W.
发明人： MATTHEWS, William, A. , HURDLE, Michael, I. , CORONA, Gerardo , LE, Dung, P. , GERCEK, Semra , SCHWARZ, George, W.
IPC分类号： B01J8/00 , C08F2/00
CPC分类号： B01J8/003 , B01J2208/00318 , B01J2208/0053 , B01J2208/00752 , C08F10/00 , Y10T137/0324
摘要： Catalyst feed systems and processes utilizing such systems are described herein. Some embodiments disclosed herein relate to a process for improving the flowability of catalyst in a catalyst feed system, including providing a catalyst feed vessel with at least one heat exchange system for maintaining the catalyst system temperature below a critical flow temperature. Also disclosed is a catalyst feed system for the polymerization of olefins including a catalyst feed vessel; and a heat exchange system for maintaining a temperature of a catalyst within the catalyst feed vessel. Additionally disclosed is a process for polymerization of olefins including maintaining a supported catalyst in a catalyst feed vessel below a critical flow temperature of the catalyst; feeding the catalyst to a polymerization reactor; and contacting the catalyst with an olefin to form a polyolefin.
摘要翻译：本文描述了使用这种系统的催化剂进料系统和方法。本文公开的一些实施方案涉及用于改进催化剂进料系统中催化剂的流动性的方法，包括为催化剂进料容器提供至少一个用于将催化剂体系温度维持在临界流动温度以下的热交换系统。还公开了用于烯烃聚合的催化剂进料系统，包括催化剂进料容器; 以及用于维持催化剂进料容器内的催化剂温度的热交换系统。另外公开了一种烯烃聚合方法，包括将催化剂进料容器中的负载型催化剂保持在催化剂的临界流动温度以下; 将催化剂加入到聚合反应器中; 并使催化剂与烯烃接触以形成聚烯烃。

3. 发明申请

WO2007041522A1 GAS-PHASE POLYMERIZATION PROCESS TO ACHIEVE A HIGH PARTICLE DENSITY 审中-公开
标题翻译：气相聚合方法实现高颗粒密度
公开(公告)号：WO2007041522A1
公开(公告)日：2007-04-12
申请号：PCT/US2006/038504
申请日：2006-10-02
申请人： UNIVATION TECHNOLOGIES, LLC , CAI, Ping , MATTHEWS, William, A.
发明人： CAI, Ping , MATTHEWS, William, A.
IPC分类号： C08F2/00 , C08F10/00
CPC分类号： C08F210/16 , Y10S526/901 , C08F2/34 , C08F210/08 , C08F2500/12 , C08F2500/18 , C08F2500/24
摘要： A process for increasing a granular particle density of a polymeric product using at least one particle density promoting agent is described. The process includes passing a gaseous stream comprising at least one monomer through a fluidized bed reactor in the presence of at least one to form a polymeric product having a first granular particle density of less than or equal to about 850 kg/m 3 , contacting the polymeric product with at least one particle density promoting agent to increase the granular particle density of the polymeric product by at least 2 %, withdrawing the polymeric product having an increased granular particle density and a recycle stream comprised of unreacted monomers, and cooling and reintroducing the recycle stream into the fluidized bed reactor with sufficient additional monomer to replace the monomer polymerized and withdrawn as the polymeric product.
摘要翻译：描述了使用至少一种颗粒密度促进剂来增加聚合物产品的颗粒密度的方法。该方法包括在至少一种存在下使包含至少一种单体的气流通过流化床反应器，以形成具有小于或等于约850kg / m 3的第一颗粒颗粒密度的聚合产物使聚合物与至少一种颗粒密度促进剂接触，以将聚合物产品的颗粒颗粒密度提高至少2％，取出具有增加的颗粒密度的聚合产物和由未反应的循环流单体，并冷却，并将再循环物流重新引入流化床反应器中，并加入足够的其它单体，以代替聚合物和作为聚合物产物取出的单体。

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