Patents by Inventor Jeffrey D. Goad
Jeffrey D. Goad has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11578146Abstract: A process comprising polymerizing olefin monomers and optionally comonomers in a first reactor vessel, thereby forming a raw product stream comprising polymerized solids, unreacted monomer and optionally comonomer, the polymerized solids comprising olefin polymer, volatile organic compounds (VOC) and catalyst system. Then the polymerized solids are contacted with a catalyst poison selected from carbon monoxide, carbon dioxide, oxygen, water, alcohols, amines, or mixtures thereof, thereby forming a passivated stream. The passivated stream is maintained in an agitated state within a second reactor. The passivated stream within the second reactor is then contacted with a circulating gas comprising unreacted monomer for a residence time, thereby reducing the concentration of VOC in the polymerized solids by at least 10 wt % compared to the level before entering the second reactor, thereby forming a purified olefin polymer solids stream.Type: GrantFiled: July 21, 2021Date of Patent: February 14, 2023Assignee: W. R. GRACE & CO.-CONN.Inventors: Jan W. Van Egmond, Jeffrey D. Goad, John K. Kaarto, Daniel J. Chismar
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Publication number: 20210355250Abstract: A process comprising polymerizing olefin monomers and optionally comonomers in a first reactor vessel, thereby forming a raw product stream comprising polymerized solids, unreacted monomer and optionally comonomer, the polymerized solids comprising olefin polymer, volatile organic compounds (VOC) and catalyst system. Then the polymerized solids are contacted with a catalyst poison selected from carbon monoxide, carbon dioxide, oxygen, water, alcohols, amines, or mixtures thereof, thereby forming a passivated stream. The passivated stream is maintained in an agitated state within a second reactor. The passivated stream within the second reactor is then contacted with a circulating gas comprising unreacted monomer for a residence time, thereby reducing the concentration of VOC in the polymerized solids by at least 10 wt % compared to the level before entering the second reactor, thereby forming a purified olefin polymer solids stream.Type: ApplicationFiled: July 21, 2021Publication date: November 18, 2021Inventors: Jan W. VAN EGMOND, Jeffrey D. GOAD, John K. KAARTO, Daniel J. CHISMAR
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Patent number: 11104749Abstract: A process comprising polymerizing olefin monomers and optionally comonomers in a first reactor vessel, thereby forming a raw product stream comprising polymerized solids, unreacted monomer and optionally comonomer, the polymerized solids comprising olefin polymer, volatile organic compounds (VOC) and catalyst system. Then the polymerized solids are contacted with a catalyst poison selected from carbon monoxide, carbon dioxide, oxygen, water, alcohols, amines, or mixtures thereof, thereby forming a passivated stream. The passivated stream is maintained in an agitated state within a second reactor. The passivated stream within the second reactor is then contacted with a circulating gas comprising unreacted monomer for a residence time, thereby reducing the concentration of VOC in the polymerized solids by at least 10 wt % compared to the level before entering the second reactor, thereby forming a purified olefin polymer solids stream.Type: GrantFiled: September 11, 2017Date of Patent: August 31, 2021Assignee: W. R. GRACE & CO.-CONN.Inventors: Jan W. Van Egmond, Jeffrey D. Goad, John K. Kaarto, Daniel J. Chismar
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Patent number: 10647790Abstract: The present invention relates to an improvement for gas-phase olefin polymerization process having relatively high bed bulk density. The improvement involves the use of mixed external electron donors when polymerizing propylene in a gas-phase reactor having a polymer bed with a bulk density greater than 128 kg/m3, optionally with one or more comonomers, wherein the mixed electron donor system comprises at least a first external electron donor and a second external electron donor, and wherein the first external electron donor is a carboxylate compound.Type: GrantFiled: June 30, 2011Date of Patent: May 12, 2020Assignee: W. R. Grace & Co.-Conn.Inventors: Ping Cai, Jan W. Van Egmond, Matthew J. Fedec, Jeffrey D. Goad, Robert C. Brady, III, Linfeng Chen
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Publication number: 20190359737Abstract: A process comprising polymerizing olefin monomers and optionally comonomers in a first reactor vessel, thereby forming a raw product stream comprising polymerized solids, unreacted monomer and optionally comonomer, the polymerized solids comprising olefin polymer, volatile organic compounds (VOC) and catalyst system. Then the polymerized solids are contacted with a catalyst poison selected from carbon monoxide, carbon dioxide, oxygen, water, alcohols, amines, or mixtures thereof, thereby forming a passivated stream. The passivated stream is maintained in an agitated state within a second reactor. The passivated stream within the second reactor is then contacted with a circulating gas comprising unreacted monomer for a residence time, thereby reducing the concentration of VOC in the polymerized solids by at least 10 wt % compared to the level before entering the second reactor, thereby forming a purified olefin polymer solids stream.Type: ApplicationFiled: September 11, 2017Publication date: November 28, 2019Inventors: Jan W. VAN EGMOND, Jeffrey D. GOAD, John K. KAARTO, Daniel J. CHISMAR
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Patent number: 10336840Abstract: A composition is provided which comprises a propylene ethylene random copolymer having a melt flow rate (MFR) (as determined according to ASTM D1238, 230° C., 2.16 Kg) of less than 1 g/10 min, a xylene solubles content of less than 7% by weight, an ethylene content of from 3 to 5 percent by weight of the copolymer, and a value equal to or greater than 92 for the product of the Koenig B value times the % mm triads measured on the xylene insoluble fraction of the random copolymer obtained by the wet method. Pipes made from the composition demonstrate improved pressure endurance.Type: GrantFiled: October 28, 2014Date of Patent: July 2, 2019Assignee: W. R. Grace & Co.-Conn.Inventors: Chai-Jing Chou, Daniel W. Baugh, III, John Kaarto, Jan W. Van Egmond, Jeffrey D. Goad, William G. Sheard
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Patent number: 10093759Abstract: A gas-phase process for making a propylene-based polymer in a fluidized-bed reactor, the reactor containing a fluidized bed including polymer product particles and a catalyst, the process having a set of quantitative criteria for maximum monomer partial pressure, maximum reactor temperature, and comonomer content(s) in the propylene-based polymer. The propylene-based polymer may be EBPT or BPRCP. The catalyst may include a catalyst/donor system comprising (1) a supported Ziegler-Natta pro-catalyst, (2) a co-catalyst, and (3) a mixed external electron donor system including (a) an activity limiting agent including at least one carboxylate ester functional group, and (b) a selectivity control agent.Type: GrantFiled: November 21, 2014Date of Patent: October 9, 2018Assignee: W. R. Grace & Co.-Conn.Inventors: Ping Cai, Matthew J. Fedec, Jeffrey D. Goad, Jan W. Van Egmond, Chai-Jing Chou
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Patent number: 9663647Abstract: A process for producing a propylene impact copolymer (ICOP), the process comprising the steps of feeding propylene and optionally one or more first comonomers into a first reactor; feeding into the first reactor a catalyst mixture; contacting the propylene with the catalyst mixture under first polymerization conditions to form an active propylene-based polymer; transferring at least a portion of the first reactor contents to a second reactor; feeding additional activity limiting agent, additional selectivity control agent and, optionally additional cocatalyst and one or more second comonomers into the second reactor; and maintaining the second reactor at a second reactor temperature in a range that is sufficient to allow copolymerization to form the propylene impact copolymer (ICOP), wherein the second reactor temperature is below 70° C.Type: GrantFiled: November 26, 2014Date of Patent: May 30, 2017Assignee: W. R. Grace & Co.-Conn.Inventors: Jan W. Van Egmond, Jeffrey D. Goad
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Patent number: 9556291Abstract: The present disclosure is directed to a process for producing olefin-based polymer in a gas phase polymerization reactor. The process includes forming a wet zone in the gas phase polymerization reactor. The wet zone is formed by maintaining a temperature less than or equal to the fluidizing medium dew point temperature+2° C. in a region of the reactor. The region is defined as the region extending from the distributor plate to 2.5 meters above the distributor plate. Injection of a high activity catalyst composition in the wet zone produces olefin-based having a settled bulk density greater than 23.5 lb/ft3.Type: GrantFiled: September 11, 2014Date of Patent: January 31, 2017Assignee: W. R. Grace & Co.-Conn.Inventors: Jan W. Van Egmond, Daniel J. Chismar, Jeffrey D. Goad
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Publication number: 20160289436Abstract: A process for producing a propylene impact copolymer (ICOP), the process comprising the steps of feeding propylene and optionally one or more first comonomers into a first reactor; feeding into the first reactor a catalyst mixture; contacting the propylene with the catalyst mixture under first polymerization conditions to form an active propylene-based polymer; transferring at least a portion of the first reactor contents to a second reactor; feeding additional activity limiting agent, additional selectivity control agent and, optionally additional cocatalyst and one or more second comonomers into the second reactor; and maintaining the second reactor at a second reactor temperature in a range that is sufficient to allow copolymerization to form the propylene impact copolymer (ICOP), wherein the second reactor temperature is below 70° C.Type: ApplicationFiled: November 26, 2014Publication date: October 6, 2016Applicant: W. R. Grace & Co.-Conn.Inventors: Jan W. Van Egmond, Jeffrey D. Goad
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Publication number: 20160289357Abstract: A gas-phase process for making a propylene-based polymer in a fluidized-bed reactor, the reactor containing a fluidized bed including polymer product particles and a catalyst, the process having a set of quantitative criteria for maximum monomer partial pressure, maximum reactor temperature, and comonomer content(s) in the propylene-based polymer. The propylene-based polymer may be EBPT or BPRCP. The catalyst may include a catalyst/donor system comprising (1) a supported Ziegler-Natta pro-catalyst, (2) a co-catalyst, and (3) a mixed external electron donor system including (a) an activity limiting agent including at least one carboxylate ester functional group, and (b) a selectivity control agent.Type: ApplicationFiled: November 21, 2014Publication date: October 6, 2016Applicant: W. R. Grace & Co.-Conn.Inventors: Ping Cai, Matthew J. Fedec, Jeffrey D. Goad, Jan W. Van Egmond, Chai-Jing Chou
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Publication number: 20160251462Abstract: A composition is provided which comprises a propylene ethylene random copolymer having a melt flow rate (MFR) (as determined according to ASTM D1238, 230° C., 2.16 Kg) of less than 1 g/10 min, a xylene solubles content of less than 7% by weight, an ethylene content of from 3 to 5 percent by weight of the copolymer, and a value equal to or greater than 92 for the product of the Koenig B value times the % mm triads measured on the xylene insoluble fraction of the random copolymer obtained by the wet method. Pipes made from the composition demonstrate improved pressure endurance.Type: ApplicationFiled: October 28, 2014Publication date: September 1, 2016Applicant: W. R. Grace & Co.-Conn.Inventors: Chai-Jing Chou, Daniel W. Baugh, III, John Kaarto, Jan W. Van Egmond, Jeffrey D. Goad, William G. Sheard
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Publication number: 20160229933Abstract: The present disclosure is directed to a process for producing olefin-based polymer in a gas phase polymerization reactor. The process includes forming a wet zone in the gas phase polymerization reactor. The wet zone is formed by maintaining a temperature less than or equal to the fluidizing medium dew point temperature+2° C. in a region of the reactor. The region is defined as the region extending from the distributor plate to 2.5 meters above the distributor plate. Injection of a high activity catalyst composition in the wet zone produces olefin-based having a settled bulk density greater than 23.5 lb/ft3.Type: ApplicationFiled: September 11, 2014Publication date: August 11, 2016Applicant: W. R. Grace & Co.-Conn.Inventors: Jan W. Van Egmond, Daniel J. Chismar, Jeffrey D. Goad
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Patent number: 8779058Abstract: The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymerization reactor to form the propylene impact copolymer with a melt flow rate greater than about 60 g/10 min. The production of the high melt flow propylene impact copolymer may occur in one or more polymerization reactors, utilizing standard hydrogen concentration, and no visbreaking.Type: GrantFiled: February 23, 2009Date of Patent: July 15, 2014Inventors: William G. Sheard, Jeffrey D. Goad, Linfeng Chen
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Patent number: 8748539Abstract: Propylene impact copolymers (ICPs) are provided which comprise: (a) a matrix phase which comprises from 60 to 95 weight % of a polypropylene polymer containing from 0 to 6 mole % of units derived from one or more alpha-olefins other than propylene, and (b) a dispersed phase which comprises from 5 to 40 weight % of a copolymer derived from a first comonomer which can be either propylene or ethylene together with a second alpha-olefin comonomer. The ICP is further characterized by having a beta/alpha ratio less than or equal to 1.1. The ICPs of the present invention are particularly well suited for applications requiring clear, tough polymers such as thin walled injection molded articles for frozen food packaging applications.Type: GrantFiled: May 24, 2011Date of Patent: June 10, 2014Assignee: Braskem America, Inc.Inventors: Peter S. Martin, Peter S. Dias, Jason C. Brodil, Li-Min Tau, Debra R. Wilson, Jeffrey D. Goad, Matthew J. Fedec
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Publication number: 20130005923Abstract: The present invention relates to an improvement for gas-phase olefin polymerization process having relatively high bed bulk density. The improvement involves the use of mixed external electron donors when polymerizing propylene in a gas-phase reactor having a polymer bed with a bulk density greater than 128 kg/m3, optionally with one or more comonomers, wherein the mixed electron donor system comprises at least a first external electron donor and a second external electron donor, and wherein the first external electron donor is a carboxylate compound.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: Dow Global Technologies LLCInventors: Ping Cai, Jan W. Van Egmond, Matthew J. Fedec, Jeffrey D. Goad, Robert C. Brady, III, Linfeng Chen
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Publication number: 20120302701Abstract: Propylene impact copolymers (ICPs) are provided which comprise: (a) a matrix phase which comprises from 60 to 95 weight % of a polypropylene polymer containing from 0 to 6 mole % of units derived from one or more alpha-olefins other than propylene, and (b) a dispersed phase which comprises from 5 to 40 weight % of a copolymer derived from a first comonomer which can be either propylene or ethylene together with a second alpha-olefin comonomer. The ICP is further characterized by having a beta/alpha ratio less than or equal to 1.1. The ICPs of the present invention are particularly well suited for applications requiring clear, tough polymers such as thin walled injection molded articles for frozen food packaging applications.Type: ApplicationFiled: May 24, 2011Publication date: November 29, 2012Applicant: Dow Global Technologies LLCInventors: Peter S. Martin, Peter S. Dias, Jason C. Brodil, Li-Min Tau, Debra R. Wilson, Jeffrey D. Goad, Matthew J. Fedec
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Publication number: 20120130018Abstract: The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymerization reactor to form the propylene impact copolymer with a melt flow rate greater than about 60 g/10 min. The production of the high melt flow propylene impact copolymer may occur in one or more polymerization reactors, utilizing standard hydrogen concentration, and no visbreaking.Type: ApplicationFiled: February 23, 2009Publication date: May 24, 2012Inventors: William G. Sheard, Jeffrey D. Goad, Linfeng Chen
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Patent number: 8067510Abstract: The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymerization reactor to form the propylene impact copolymer with a melt flow rate greater than about 60 g/10 min. The production of the high melt flow propylene impact copolymer may occur in one or more polymerization reactors, utilizing standard hydrogen concentration, and no visbreaking.Type: GrantFiled: February 23, 2009Date of Patent: November 29, 2011Assignee: Union Carbide Chemicals & Plastics Technology LLCInventors: William G. Sheard, Jeffrey D. Goad, Linfeng Chen
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Publication number: 20090209706Abstract: The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymerization reactor to form the propylene impact copolymer with a melt flow rate greater than about 60 g/10 min. The production of the high melt flow propylene impact copolymer may occur in one or more polymerization reactors, utilizing standard hydrogen concentration, and no visbreaking.Type: ApplicationFiled: February 23, 2009Publication date: August 20, 2009Inventors: William G. Sheard, Jeffrey D. Goad, Linfeng Chen