Patents by Inventor Ahmet Turgut Mutel

Ahmet Turgut Mutel 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).

  • Polymerization Process
    Publication number: 20230079764
    Abstract: The present invention relates to a process comprising the step of melt-mixing a semi-aromatic polyamide (A) having a melting point on second heating of 295° C. or less comprising terephthalamide repeat units and a polyamide oligomer (B) comprising terephthalamide repeat units and having an amine end group concentration of less than 2000 me q/Kg and an inherent viscosity of at least 0.10, at a temperature which is greater than the melting point on first heating of both semi-aromatic polyamide (A) and polyamide oligomer (B) for a time period sufficient to produce semi-aromatic polyamide (C) having a melting point on second heating which is greater than or equal to 300° C.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 16, 2023
    Inventors: Ahmet Turgut Mutel, Shailesh Ratilal Doshi
  • Polymerization process
    Patent number: 11505649
    Abstract: The present invention relates to a process comprising the step of melt-mixing a semi-aromatic polyamide (A) having a melting point on second heating of 295° C. or less comprising terephthalamide repeat units and a polyamide oligomer (B) comprising terephthalamide repeat units and having an amine end group concentration of less than 2000 me q/Kg and an inherent viscosity of at least 0.10, at a temperature which is greater than the melting point on first heating of both semi-aromatic polyamide (A) and polyamide oligomer (B) for a time period sufficient to produce semi-aromatic polyamide (C) having a melting point on second heating which is greater than or equal to 300° C.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: November 22, 2022
    Assignee: DUPONT POLYMERS, INC.
    Inventors: Ahmet Turgut Mutel, Shailesh Ratilal Doshi
  • POLYMERIZATION PROCESS
    Publication number: 20200277440
    Abstract: The present invention relates to a process comprising the step of melt-mixing a semi-aromatic polyamide (A) having a melting point on second heating of 295° C. or less comprising terephthalamide repeat units and a polyamide oligomer (B) comprising terephthalamide repeat units and having an amine end group concentration of less than 2000 me q/Kg and an inherent viscosity of at least 0.10, at a temperature which is greater than the melting point on first heating of both semi-aromatic polyamide (A) and polyamide oligomer (B) for a time period sufficient to produce semi-aromatic polyamide (C) having a melting point on second heating which is greater than or equal to 300° C.
    Type: Application
    Filed: September 26, 2018
    Publication date: September 3, 2020
    Inventors: Ahmet Turgut Mutel, Shailesh Ratilal Doshi
  • Polyamides for vehicular parts
    Publication number: 20090105412
    Abstract: Polyamides made from a combination of adipic acid, terephthalic acid and 1,6-hexanediamine in specified proportions have excellent salt stress corrosion cracking resistance. These polyamides are especially useful for vehicular parts that are exposed to contact with salts such as sodium chloride or calcium chloride that are used, for instance, for melting ice and/or snow on roadways.
    Type: Application
    Filed: September 12, 2008
    Publication date: April 23, 2009
    Inventors: Marvin M. Martens, Ahmet Turgut Mutel
  • PROCESS FOR CONVERTING CAPROLACTAM TO NYLON 6
    Publication number: 20020183478
    Abstract: A process for making nylon 6, in which caprolactam and water are reacted in a multistage reactive distillation column.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 5, 2002
    Inventors: Stuart B. Fergusson, Ernest Keith Marchildon, Ahmet Turgut Mutel
  • Process for converting caprolactam to nylon 6
    Patent number: 6479620
    Abstract: A process for making nylon 6, in which caprolactam and water are reacted in a multistage reactive distillation column.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: November 12, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stuart B. Fergusson, Ernest Keith Marchildon, Ahmet Turgut Mutel
  • Process for making nylon 6,6
    Patent number: 6472501
    Abstract: Process for making Nylon 6,6 by reacting adiponitrile, hexamethylenediamine and steam in a multistage distillation column reactor.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: October 29, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stuart B. Fergusson, Ernest Keith Marchildon, Ahmet Turgut Mutel
  • Process for the production of nylon 6
    Patent number: 6437089
    Abstract: 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: Grant
    Filed: June 1, 2001
    Date of Patent: August 20, 2002
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jeffrey D. Cohen, Stuart B. Fergusson, Ernest Keith Marchildon, David N. Marks, Ahmet Turgut Mutel