Patents by Inventor Dimitris Ioannis Collias

Dimitris Ioannis Collias 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).

  • Process for production of acrylic acid or its derivatives
    Patent number: 10301246
    Abstract: Processes for the catalytic dehydration of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propanoic acid, and acetic acid, are provided. The processes can be carried out either in a gas phase or in a liquid phase.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 28, 2019
    Assignee: The Procter & Gamble Company
    Inventors: Jane Ellen Godlewski, Janette Villalobos Lingoes, Dimitris Ioannis Collias, Juan Esteban Velasquez
  • Methods of making acrylic acid from lactic acid using molten salt catalysts
    Patent number: 10301247
    Abstract: A method of making acrylic acid in liquid phase by contacting a feed stream containing lactic acid, lactide, or mixtures thereof with a molten salt catalyst comprising a protic ionic liquid (PIL), which contains a bromide anion (Br?), is provided.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: May 28, 2019
    Assignees: The Procter & Gamble Company, Friedrich Alexander Universitat Erlangen-Nurnberg
    Inventors: Jakob Albert, Peter Wasserscheid, Nicola Taccardi, Jens Nagengast, Matthias Kehrer, Julian Kadar, Dimitris Ioannis Collias
  • Catalysts for the production of acrylic acid or its derivatives
    Patent number: 10294186
    Abstract: Catalysts for dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity, short residence time, and without significant conversion to undesired side products, such as, for example, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed protonated monophosphates. Methods of preparing the catalysts are also provided.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 21, 2019
    Assignee: The Procter & Gamble Company
    Inventors: Juan Esteban Velasquez, Janette Villalobos Lingoes, Dimitris Ioannis Collias, Jane Ellen Godlewski, Marc Andrew Mamak
  • Catalysts for the dehydration of hydroxypropionic acid and its derivatives
    Patent number: 10286387
    Abstract: Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: May 14, 2019
    Assignee: The Procter & Gamble Company
    Inventors: Juan Esteban Velasquez, Dimitris Ioannis Collias, Jane Ellen Godlewski, Fred Christian Wireko
  • Catalysts for the dehydration of hydroxypropionic acid and its derivatives
    Patent number: 10272416
    Abstract: Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: April 30, 2019
    Assignee: The Procter & Gamble Company
    Inventors: Juan Esteban Velasquez, Dimitris Ioannis Collias, Jane Ellen Godlewski, Fred Christian Wireko
  • REGENERATION METHOD OF SOLID CATALYST
    Publication number: 20190105651
    Abstract: The present invention aims to provide a regeneration method capable of sufficiently restoring the catalytic performance of a solid catalyst used in a dehydration reaction of lactic acid and derivatives thereof. The present invention relates to a method for regenerating a solid catalyst used in a dehydration reaction of lactic acid and derivatives of lactic acid, the method including a contacting step of bringing a solid catalyst containing a component that forms a molten salt in the presence of steam into contact with oxygen and steam under pressure.
    Type: Application
    Filed: October 6, 2017
    Publication date: April 11, 2019
    Applicants: THE PROCTER & GAMBLE COMPANY, NIPPON SHOKUBAI CO., LTD.
    Inventors: Juan Estaban VELASQUEZ, Dimitris Ioannis COLLIAS, Jane Ellen GODLEWSKI, Motosuke IMADA, Koji SHINGUBARA, Masashi TONOYA, Shinji KANBARA, Masaki OKADA, Tomoharu OKU, Hideaki TSUNEKI, Masanori NONOGUCHI
  • Catalytic dehydration of hydroxypropionic acid and its derivatives
    Patent number: 10106481
    Abstract: Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: October 23, 2018
    Assignee: The Procter & Gamble Company
    Inventors: Juan Esteban Velasquez, Dimitris Ioannis Collias, Jane Ellen Godlewski, Fred Christian Wireko
  • Catalysts for the conversion of hydroxypropionic acid or its derivatives to acrylic acid or its derivatives
    Patent number: 10106484
    Abstract: Catalysts for dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity, short residence time, and without significant conversion to undesired side products, such as, for example, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed condensed phosphates. Methods of preparing the catalysts are also provided.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: October 23, 2018
    Assignee: The Procter & Gamble Company
    Inventors: Juan Estaban Velasquez, Janette Villalobos Lingoes, Jane Ellen Godlewski, Dimitris Ioannis Collias, Fred C. Wireko, Marc Andrew Mamak, Nancy Lee Redman-Furey
  • Polymeric compositions and articles comprising polylactic acid and polyolefin
    Patent number: 10087316
    Abstract: The present invention relates to polymeric compositions comprising polylactic acid (PLA), polyolefin, and, optionally, a non reactive melt strength enhancing additive (NRMSEA), as well as articles molded from the compositions and a method of making the compositions.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: October 2, 2018
    Assignee: The Procter & Gamble Company
    Inventors: Dimitris Ioannis Collias, Norman Scott Broyles, John Andrew McDaniel
  • Methods Of Making Acrylic Acid From Lactic Acid Using Molten Salt Catalysts
    Publication number: 20180258024
    Abstract: A method of making acrylic acid in liquid phase by contacting a feed stream containing lactic acid, lactide, or mixtures thereof with a molten salt catalyst comprising a protic ionic liquid (PIL), which contains a bromide anion (Br?), is provided.
    Type: Application
    Filed: March 7, 2018
    Publication date: September 13, 2018
    Inventors: Jakob Albert, Peter Wasserscheid, Nicola Taccardi, Jens Nagengast, Matthias Kehrer, Julian Kadar, Dimitris Ioannis Collias
  • Method For Purifying Reclaimed Polypropylene
    Publication number: 20180171095
    Abstract: A method for purifying a reclaimed polyethylene is provided. The method involves obtaining reclaimed polyethylene, contacting it with a first fluid solvent to produce an extracted reclaimed polyethylene then dissolving the extracted reclaimed polyethylene in a solvent to produce a first solution comprising polyethylene and suspended contaminants. The first solution is settled to produce a second solution comprising polyethylene and remaining contaminants. The second solution is purified by contacting the second solution with solid media to produce a third solution comprising purer polyethylene. Finally, the purer polyethylene is separated from the third solution.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 21, 2018
    Inventors: John Moncrief Layman, Dimitris Ioannis Collias, Hans Schonemann, Kara Williams
  • Method For Separating And Purifying Materials From A Reclaimed Product
    Publication number: 20180171097
    Abstract: A method for separating and purifying polymers of a reclaimed product (rP) is disclosed. The rP is contacted at an elevated temperature and pressure, with an extraction solvent to produce an extracted rP (erP). A solvent, at conditions sufficient to solubilize the first polymer, contacts the erP to produce a solution, which is purified at an elevated temperature and pressure by contacting it with a solid medium to produce a purified solution of the first polymer. The purified polymer is then separated from the purified solution, and the method steps are repeated until all polymers are separated and purified.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 21, 2018
    Inventors: John Moncrief Layman, Dimitris Ioannis Collias, Hans NMN Schonemann, Kara NMN Williams
  • Method For Purifying Reclaimed Polymers
    Publication number: 20180171096
    Abstract: A method for purifying a reclaimed polymer is provided. The method involves obtaining reclaimed polymer, contacting it with a first fluid solvent to produce an extracted reclaimed polymer then dissolving the extracted reclaimed polymer in a solvent to produce a first solution comprising polymer and suspended contaminants. The first solution is settled to produce a second solution comprising polymer and remaining contaminants. The second solution is purified by contacting the second solution with solid media to produce a third solution comprising purer polymer. Finally, the purer polymer is separated from the third solution.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 21, 2018
    Inventors: John Moncrief Layman, Dimitris Ioannis Collias, Maggie Gunnerson, Hans Schonemann, Kara Williams
  • Method For Purifying Reclaimed Polypropylene
    Publication number: 20180171094
    Abstract: A method for purifying a reclaimed polypropylene is provided. The method involves obtaining reclaimed polypropylene, contacting it with a first fluid solvent to produce an extracted reclaimed polypropylene then dissolving the extracted reclaimed polypropylene in a solvent to produce a first solution comprising polypropylene and suspended contaminants. The first solution is settled to produce a second solution comprising polypropylene and remaining contaminants. The second solution is purified by contacting the second solution with solid media to produce a third solution comprising purer polypropylene. Finally, the purer polypropylene is separated from the third solution.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 21, 2018
    Inventors: John Moncrief Layman, Dimitris Ioannis Collias, Hans Schonemann, Kara Williams
  • Methods Of Making Acrylic Acid From Lactic Acid Or Its Derivatives In Liquid Phase
    Publication number: 20180148400
    Abstract: Methods for making acrylic acid, acrylic acid derivatives, or mixtures thereof by contacting a feed stream containing lactic acid, lactic acid derivatives, or mixtures thereof with a molten salt catalyst comprising an ionic liquid (IL) and an acid in liquid phase are provided.
    Type: Application
    Filed: January 11, 2018
    Publication date: May 31, 2018
    Inventors: Jakob Albert, Peter Wasserscheid, Nicola Taccardi, Jens Nagengast, Matthias Kehrer, Julian Kadar, Dimitris Ioannis Collias
  • Catalysts For Making Acrylic Acid From Lactic Acid Or Its Derivatives In Liquid Phase
    Publication number: 20180133705
    Abstract: Catalysts for the dehydration of lactic acid, lactic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof in liquid phase comprising an ionic liquid (IL) and an acid are provided.
    Type: Application
    Filed: January 11, 2018
    Publication date: May 17, 2018
    Inventors: Jakob Albert, Peter Wasserscheid, Nicola Taccardi, Jens Nagengast, Matthias Kehrer, Julian Kadar, Dimitris Ioannis Collias
  • Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid
    Publication number: 20180127348
    Abstract: Processes for the purification of bio-based acrylic acid to crude and glacial acrylic acid are provided. The bio-based acrylic acid is produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof. The purification includes some or all of the following processes: extraction, drying, distillation, and melt crystallization. The produced glacial or crude acrylic acid contains hydroxypropionic, hydroxypropionic acid derivatives, or mixtures thereof as an impurity.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 10, 2018
    Inventors: Jane Ellen Godlewski, Janette Villalobos Lingoes, Juan Esteban Velasquez, Dimitris Ioannis Collias
  • Method Of Making Acrylic Acid From Hydroxypropionic Acid
    Publication number: 20180126187
    Abstract: Methods for making acrylic acid, acrylic acid derivatives, or mixtures thereof by contacting a stream containing hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof with either an active catalyst containing an amorphous and partially-dehydrated phosphate salt or a precursor catalyst containing a crystalline phosphate salt in a reactor with a low corrosion rate are provided.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 10, 2018
    Inventors: Dimitris Ioannis Collias, Jane Ellen Godlewski, Juan Esteban Velasquez
  • Catalysts For The Dehydration Of Hydroxypropionic Acid And Its Derivatives
    Publication number: 20180126363
    Abstract: Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 10, 2018
    Inventors: Juan Esteban Velasquez, Dimitris Ioannis Collias, Jane Ellen Godlewski, Fred Christian Wireko
  • Catalytic conversion of lactic acid to acrylic acid
    Patent number: 9926256
    Abstract: Disclosed herein is a mixed phosphate catalyst for converting lactic acid to acrylic acid, which is characterized by a high conversion of lactic acid, a high selectivity for acrylic acid, a high yield of acrylic acid, and correspondingly low selectivity and molar yields for undesired by-products. This is achieved with a particular class of catalysts defined by a mixture of metal-containing phosphate salts. Further, the catalyst is believed to be stable and active for lengthy periods heretofore unseen in the art for such dehydration processes.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 27, 2018
    Assignee: The Procter & Gamble Company
    Inventors: Janette Villalobos Lingoes, Dimitris Ioannis Collias