Patents by Inventor Ernest Keith Marchildon
Ernest Keith Marchildon 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: 9944753Abstract: A continuous process for the manufacture of a polyamide, the process comprising the steps of: (i) flowing a stream A comprising a molten dicarboxylic acid, or a molten dicarboxylic acid-rich mixture comprising a dicarboxylic acid and a diamine, through a first stage and at least one more reaction stage of a vertical multistage reactor, wherein the first stage is at the top of the reactor; (ii) counter-currently flowing a stream B comprising a diamine as either a vapor or a diamine-rich liquid through at least one of the stages below the first reaction stage of said vertical multistage reactor; (iii) accumulating a liquid phase material P comprising polyamide at and/or below the final stage of said reactor; wherein said reactor is equipped with internal features suitable for effecting contact between counter-currently flowing streams A and B; and wherein said process further comprises the step of agitating said liquid phase material P by injecting a gaseous stream C comprising steam, or at least one inert gas,Type: GrantFiled: November 20, 2014Date of Patent: April 17, 2018Assignee: INVISTA NORTH AMERICA S.A R.L.Inventors: Ernest Keith Marchildon, Karen A. Surgenor, Bryan D. Kaushiva
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Patent number: 9834643Abstract: A continuous process for the manufacture of a polyamide, the process comprising the steps of: (i) flowing a stream A comprising a moltendicarboxylic acid, or a molten dicarboxylic acid-rich mixture comprising a dicarboxylic acid and a diamine, through a first stage and at least one more reaction stage of a vertical multistage reactor, wherein the first stage is at the top of the reactor; (ii) counter-currently flowing a stream B comprising a diamine as either a vapor or a diamine-rich liquid through at least one of the stages below the first reaction stage of said vertical multistage reactor; (iii) accumulating a liquid phase material P comprising polyamide at and/or below the final stage of said reactor; wherein said reactor is equipped with internal features suitable for effecting contact between counter-currently flowing streams A and B; and wherein the process further comprises controlling the viscosity of said liquid phase material P by directly controlling the chemical equilibrium of the polyamidation rType: GrantFiled: November 20, 2014Date of Patent: December 5, 2017Assignee: INVISTA NORTH AMERICA S.A R.L.Inventors: Ernest Keith Marchildon, Karen A. Surgenor, Bryan D. Kaushiva
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Publication number: 20160289384Abstract: A continuous process for the manufacture of a polyamide, the process comprising the steps of: (i) flowing a stream A comprising a moltendicarboxylic acid, or a molten dicarboxylic acid-rich mixture comprising a dicarboxylic acid and a diamine, through a first stage and at least one more reaction stage of a vertical multistage reactor, wherein the first stage is at the top of the reactor; (ii) counter-currently flowing a stream B comprising a diamine as either a vapour or a diamine-rich liquid through at least one of the stages below the first reaction stage of said vertical multistage reactor; (iii) accumulating a liquid phase material P comprising polyamide at and/or below the final stage of said reactor; wherein said reactor is equipped with internal features suitable for effecting contact between counter-currently flowing streams A and B; and wherein the process further comprises controlling the viscosity of said liquid phase material P by directly controlling the chemical equilibrium of the polyamidationType: ApplicationFiled: November 20, 2014Publication date: October 6, 2016Applicant: INVISTA NORTH AMERICA S.A R.L.Inventors: Ernest Keith MARCHILDON, Karen A. SURGENOR, Bryan D. KAUSHIVA
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Publication number: 20160289383Abstract: A continuous process for the manufacture of a polyamide, the process comprising the steps of: (i) flowing a stream A comprising a molten dicarboxylic acid, or a molten dicarboxylic acid-rich mixture comprising a dicarboxylic acid and a diamine, through a first stage and at least one more reaction stage of a vertical multistage reactor, wherein the first stage is at the top of the reactor; (ii) counter-currently flowing a stream B comprising a diamine as either a vapour or a diamine-rich liquid through at least one of the stages below the first reaction stage of said vertical multistage reactor; (iii) accumulating a liquid phase material P comprising polyamide at and/or below the final stage of said reactor; wherein said reactor is equipped with internal features suitable for effecting contact between counter-currently flowing streams A and B; and wherein said process further comprises the step of agitating said liquid phase material P by injecting a gaseous stream C comprising steam, or at least one inert gasType: ApplicationFiled: November 20, 2014Publication date: October 6, 2016Applicant: INVISTA NORTH AMERICA S.A R.L.Inventors: Ernest Keith MARCHILDON, Karen A. SURGENOR, Bryan D. KAUSHIVA
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Publication number: 20020183478Abstract: A process for making nylon 6, in which caprolactam and water are reacted in a multistage reactive distillation column.Type: ApplicationFiled: June 1, 2001Publication date: December 5, 2002Inventors: Stuart B. Fergusson, Ernest Keith Marchildon, Ahmet Turgut Mutel
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Patent number: 6479620Abstract: A process for making nylon 6, in which caprolactam and water are reacted in a multistage reactive distillation column.Type: GrantFiled: June 1, 2001Date of Patent: November 12, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Stuart B. Fergusson, Ernest Keith Marchildon, Ahmet Turgut Mutel
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Patent number: 6472501Abstract: Process for making Nylon 6,6 by reacting adiponitrile, hexamethylenediamine and steam in a multistage distillation column reactor.Type: GrantFiled: June 1, 2001Date of Patent: October 29, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Stuart B. Fergusson, Ernest Keith Marchildon, Ahmet Turgut Mutel
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Patent number: 6437089Abstract: Process for making nylon 6 in which a feed stream containing a major portion of caprolactam and/or nylon 6 prepolymer and a minor portion of aminocapronitrile is fed to a multistage reactive distillation column in which the feed stream flows countercurrently to a steam stream.Type: GrantFiled: June 1, 2001Date of Patent: August 20, 2002Assignee: E. I. Du Pont de Nemours and CompanyInventors: Jeffrey D. Cohen, Stuart B. Fergusson, Ernest Keith Marchildon, David N. Marks, Ahmet Turgut Mutel
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Patent number: 6201096Abstract: A continuous process for the polymerization of omega-aminonitriles (e.g., 6-aminocapronitriles) which is introduced at the top of a vertical multistage reactor being swept countercurrently with steam and polyamide (e.g., nylon 6) is recovered near the bottom of the vertical multistage reactor. By virtue of independent temperature control at each of the vertical stages of the multistage reactor, the polyamide recovered is typically characterized as having unreacted nitrile end groups of less than 20 gram equivalents per million grams of polyamide, and less than 25 gram equivalents of secondary amine branching per million grams of polyamide.Type: GrantFiled: October 25, 1999Date of Patent: March 13, 2001Assignee: E. I. du Pont de Nemours and CompanyInventors: Ernest Keith Marchildon, Ahmut Turgut Mutel