Patents by Inventor Benjamin Milton Shaw
Benjamin Milton Shaw 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: 10737229Abstract: Provided herein is a unidirectional blow down system for a high-pressure tubular reactor with a hyper that minimizes the tube wall metal temperature during a decomposition event wherein the system prevents the reactor walls from reaching a temperature capable of causing the tube metal to austenize. Also provided are methods of designing and methods of operating a unidirectional blowdown system.Type: GrantFiled: December 2, 2016Date of Patent: August 11, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Teresa Yuk Woon Leung, Kamal Kamel Botros, Ross Donald Moreton, Benjamin Milton Shaw
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Publication number: 20180345238Abstract: Provided herein is a unidirectional blow down system for a high-pressure tubular reactor with a hyper that minimizes the tube wall metal temperature during a decomposition event wherein the system prevents the reactor walls from reaching a temperature capable of causing the tube metal to austenize. Also provided are methods of designing and methods of operating a unidirectional blowdown system.Type: ApplicationFiled: December 2, 2016Publication date: December 6, 2018Applicant: NOVA Chemicals (International) S.A.Inventors: Teresa Yuk Woon Leung, Kamal Kamel Botros, Ross Donald Moreton, Benjamin Milton Shaw
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Patent number: 9879098Abstract: In the high pressure polymerization of ethylene homopolymers or copolymers, conditions in the high pressure recycle system may lead to the build-up of low molecular weight oligomers and waxes. Sequentially draining knock-out pots, located downstream of a high pressure separator, at regular intervals can reduce the build-up of low molecular weight oligomers and waxes during the high pressure polymerization of alpha olefins.Type: GrantFiled: May 19, 2015Date of Patent: January 30, 2018Assignee: NOVA Chemicals (International) S.A.Inventors: James A. Auger, Craig Allan Hulet, Ross Donald Moreton, Benjamin Milton Shaw, Amanda Dolores Murphy
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Publication number: 20170152329Abstract: In the high pressure polymerization of ethylene homopolymers or copolymers, conditions in the high pressure recycle system may lead to the build-up of low molecular weight oligomers and waxes. Sequentially draining knock-out pots, located downstream of a high pressure separator, at regular intervals can reduce the build-up of low molecular weight oligomers and waxes during the high pressure polymerization of alpha olefins.Type: ApplicationFiled: May 19, 2015Publication date: June 1, 2017Applicant: NOVA Chemicals (International) S.A.Inventors: James A. Auger, Craig Allan Hulet, Ross Donald Moreton, Benjamin Milton Shaw, Amanda Dolores Murphy
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Patent number: 8952111Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.Type: GrantFiled: September 19, 2011Date of Patent: February 10, 2015Assignee: Nova Chemicals (International) S.A.Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Patrick Lam, Victoria Ker, Cliff Robert Baar, Lee Douglas Henderson, Charles Ashton Garret Carter, Yan Jiang
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Patent number: 8865847Abstract: Olefin polymerization is carried out with a single site polymerization catalyst in the presence of a continuity additive. The continuity additive is a cocktail containing one or more dialkanolamide derived from a fatty acid, an oil soluble sulfonic acid and a dialkanolamine.Type: GrantFiled: April 19, 2012Date of Patent: October 21, 2014Assignee: Nova Chemicals (International) S.AInventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Andy Mak
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Patent number: 8829137Abstract: Polyethylene films having a good balance of optical and mechanical properties are disclosed. The films are derived from ethylene copolymer compositions made with a suitably substituted phosphinimine catalyst. The ethylene copolymers have very narrow molecular weight distributions and broadened comonomer distributions.Type: GrantFiled: February 27, 2012Date of Patent: September 9, 2014Assignee: Nova Chemicals (International) S.A.Inventors: Patrick Lam, Victoria Ker, Charles Ashton Garret Carter, Benjamin Milton Shaw, Cliff Robert Baar, Alexei Kazakov, Ian Douglas McKay, Dusan Jeremic
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Patent number: 8809473Abstract: A method for altering the polymer architecture of ethylene copolymers made with a supported phosphinimine polymerization catalyst. The method involves changing the amount of a catalyst modifier added to a reactor separately from or together with a supported phosphinimine polymerization catalyst.Type: GrantFiled: September 16, 2011Date of Patent: August 19, 2014Assignee: Nova Chemicals (International) S.A.Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Patrick Lam, Victoria Ker, Cliff Robert Baar
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Patent number: 8755947Abstract: In the high pressure of polymerization of ethylene homopolymer or copolymers conditions in the reactor may become unstable leading to the decomposition (“decomp”) of the reaction mixture. Monitoring temperature excursions traveling through the reactor over close thermocouples (a roller) to detect changes in the mean temperature and the moving temperature front for a group of thermocouples detects conditions potentially leading to a decomp.Type: GrantFiled: July 19, 2011Date of Patent: June 17, 2014Assignee: Nova Chemicals (International) S.A.Inventors: Craig Hulet, Joel Racle, Ian Woods, Benjamin Milton Shaw, Yves Lacombe
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Publication number: 20130296507Abstract: Olefin polymerization is carried out with a single site polymerization catalyst in the presence of a continuity additive. The continuity additive is a cocktail containing one or more dialkanolamide derived from a fatty acid, an oil soluble sulfonic acid and a dialkanolamine.Type: ApplicationFiled: April 19, 2012Publication date: November 7, 2013Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.,Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Andy Mak
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Patent number: 8450435Abstract: The time between shut downs of a gas phase reactor for the polymerization of polyethylene may be significantly increased if the catalyst used is not prepared by impregnating the support with a solution of catalyst in an electron donor; the reaction is controlled using the addition of activator based on polymer production rate and the recycle stream contains a condensed liquid phase in an amount greater than 13 weight %. Operating the reactor in this manner increase the time between cleaning the cooler (heat exchanger) the bed plate, or both from about 4 to 6 months to not less than about 24 months.Type: GrantFiled: June 6, 2011Date of Patent: May 28, 2013Assignee: NOVA Chemicals (International) S.AInventors: John Iatrou, Mark Jay Ziebart, Dale Warren Nagel, Kent Gray Jensen, Benjamin Milton Shaw
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Publication number: 20130022498Abstract: In the high pressure of polymerization of ethylene homopolymer or copolymers conditions in the reactor may become unstable leading to the decomposition (“decomp”) of the reaction mixture. Monitoring temperature excursions traveling through the reactor over close thermocouples (a roller) to detect changes in the mean temperature and the moving temperature front for a group of thermocouples detects conditions potentially leading to a decomp.Type: ApplicationFiled: July 19, 2011Publication date: January 24, 2013Inventors: Craig Hulet, Joel Racle, Ian Woods, Benjamin Milton Shaw, Yves Lacombe
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Publication number: 20120316301Abstract: A method for altering the polymer architecture of ethylene copolymers made with a supported phosphinimine polymerization catalyst. The method involves changing the amount of a catalyst modifier added to a reactor separately from or together with a supported phosphinimine polymerization catalyst.Type: ApplicationFiled: September 16, 2011Publication date: December 13, 2012Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Patrick Lam, Victoria Ker, Cliff Robert Baar
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Publication number: 20120316297Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.Type: ApplicationFiled: September 19, 2011Publication date: December 13, 2012Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Victoria Ker, Cliff Robert Baar, Lee Douglas Henderson, Charles Ashton Garret Carter, Yan Jiang
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Patent number: 8304361Abstract: Fouling in a dispersed phase reactor in the presence of a phosphinimine catalyst and MAO may be reduced by reducing the loading of the phosphinimine catalyst to provide from 0.02 to 0.031 mmol of transition M per g of catalyst while still maintaining a productivity of not less than 2500 g of polymer/gram of catalyst. The catalyst may optionally be used in the presence of an antistatic agent.Type: GrantFiled: May 16, 2011Date of Patent: November 6, 2012Assignee: NOVA Chemical (International) S.A.Inventors: Xiaoliang Gao, Benjamin Milton Shaw, Cliff Robert Baar
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Patent number: 8298978Abstract: Single site reactor/catalyst continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation may be improved by treating the support with a metal salt. The activator and catalyst are then deposited on the treated support. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.Type: GrantFiled: October 14, 2010Date of Patent: October 30, 2012Assignee: Nova Chemicals (International) S.A.Inventors: Xiaoliang Gao, Billy Gaspar Santos, Peter Phung Minh Hoang, Amy Marie Jones, Benjamin Milton Shaw, Ian Ronald Jobe
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Publication number: 20120238720Abstract: Polyethylene films having a good balance of optical and mechanical properties are disclosed. The films are derived from ethylene copolymer compositions made with a suitably substituted phosphinimine catalyst. The ethylene copolymers have very narrow molecular weight distributions and broadened comonomer distributions.Type: ApplicationFiled: February 27, 2012Publication date: September 20, 2012Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Patrick Lam, Victoria Ker, Charles Ashton Garret Carter, Benjamin Milton Shaw, Cliff Robert Baar, Alexei Kazakov, Ian Douglas McKay, Dusan Jeremic
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Publication number: 20110301308Abstract: The time between shut downs of a gas phase reactor for the polymerization of polyethylene may be significantly increased if the catalyst used is not prepared by impregnating the support with a solution of catalyst in an electron donor; the reaction is controlled using the addition of activator based on polymer production rate and the recycle stream contains a condensed liquid phase in an amount greater than 13 weight %. Operating the reactor in this manner increase the time between cleaning the cooler (heat exchanger) the bed plate, or both from about 4 to 6 months to not less than about 24 months.Type: ApplicationFiled: June 6, 2011Publication date: December 8, 2011Inventors: John Iatrou, Mark Jay Ziebart, Dale Warren Nagel, Kent Gray Jensen, Benjamin Milton Shaw
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Publication number: 20110288248Abstract: Fouling in a dispersed phase reactor in the presence of a phosphinimine catalyst and MAO may be reduced by reducing the loading of the phosphinimine catalyst to provide from 0.02 to 0.031 mmol of transition M per g of catalyst while still maintaining a productivity of not less than 2500 g of polymer/gram of catalyst. The catalyst may optionally be used in the presence of an antistatic agent.Type: ApplicationFiled: May 16, 2011Publication date: November 24, 2011Inventors: Xiaoliang Gao, Benjamin Milton Shaw, Cliff Robert Baar
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Publication number: 20110092654Abstract: Single site reactor/catalyst continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation may be improved by treating the support with a metal salt. The activator and catalyst are then deposited on the treated support. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.Type: ApplicationFiled: October 14, 2010Publication date: April 21, 2011Inventors: Xiaoliang Gao, Billy Gaspar Santos, Peter Phung Minh Hoang, Amy Marie Jones, Benjamin Milton Shaw, Ian Ronald Jobe