Patents by Inventor Daniel Rangel-Osalde

Daniel Rangel-Osalde 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 producing vinyl acetate
    Patent number: 9573877
    Abstract: The present invention relates to a process for forming vinyl acetate. The process comprises the step of providing a reaction mixture having an initial heat capacity. The reaction mixture comprises acetic acid, oxygen, ethylene, and optionally water. The process further comprises the step of adding to the reaction mixture at least one heat capacity modifier to form an increased heat capacity reaction mixture. The process further comprises the step of contacting the acetic acid, oxygen, and ethylene over a catalyst under conditions effective to form a crude vinyl acetate product. The crude vinyl acetate product comprises vinyl acetate and water.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: February 21, 2017
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Pieter Vismans, Naveed Aslam, Tony Hammock, Kevin Hanks, Ilias S. Kotsianis, Tianshu Pan, Daniel Rangel-Osalde, Kelly Wallace
  • Production of diacetoxyethylene by direct acetoxylation
    Patent number: 8884052
    Abstract: In one embodiment, the invention is to a process for producing a vinyl acetate composition by contacting a vinyl acetate stream with acetic acid, ethylene, and oxygen to form a reaction mixture and reacting the reaction mixture in a reactor under conditions effective to form a crude vinyl acetate composition comprising vinyl acetate, water, acetic acid and at least 0.1 wt % diacetoxyethylene.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: November 11, 2014
    Assignee: Celanese International Corporation
    Inventors: Joseph G. Duff, Stephen Kerlegon, Kien V. Phung, Daniel Rangel-Osalde, Tatiana H. Sonnenberg, Cathy L. Tway, Hang Wang
  • Process for Producing Vinyl Acetate
    Publication number: 20140066649
    Abstract: The present invention relates to a process for forming vinyl acetate. The process comprises the step of providing a reaction mixture having an initial heat capacity. The reaction mixture comprises acetic acid, oxygen, ethylene, and optionally water. The process further comprises the step of adding to the reaction mixture at least one heat capacity modifier to form an increased heat capacity reaction mixture. The process further comprises the step of contacting the acetic acid, oxygen, and ethylene over a catalyst under conditions effective to form a crude vinyl acetate product. The crude vinyl acetate product comprises vinyl acetate and water.
    Type: Application
    Filed: August 26, 2013
    Publication date: March 6, 2014
    Applicant: Celanese International Corporation
    Inventors: Pieter Vismans, Naveed Aslam, Tony Hammock, Kevin Hanks, Illias S. Kotsianis, Tianshu Pan, Daniel Rangel-Osalde, Kelly Wallace
  • COPOLYMERS OF 1,2-DIACETOXYETHYLENE AND VINYL ACETATE, PROCESS OF MAKING THE COPOLYMERS AND PROCESS OF MAKING A COPOLYMERIZED POLYVINYL ALCOHOL
    Publication number: 20140024766
    Abstract: In one embodiment, the invention is to a vinyl acetate/diacetoxyethylene copolymer, processes of making the copolymer and processes of hydrolyzing said copolymer to form a copolymerized polyvinyl alcohol.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 23, 2014
    Applicant: Celanese International Corporation
    Inventors: Joseph G. Duff, Stephen Kerlegon, Kien-Van Phung, Daniel Rangel-Osalde, Tatiana H. Sonnenberg, Cathy Tway, Hang Wang
  • PRODUCTION OF DIACETOXYETHYLENE BY DIRECT ACETOXYLATION
    Publication number: 20130158289
    Abstract: In one embodiment, the invention is to a process for producing a vinyl acetate composition by contacting a vinyl acetate stream with acetic acid, ethylene, and oxygen to form a reaction mixture and reacting the reaction mixture in a reactor under conditions effective to form a crude vinyl acetate composition comprising vinyl acetate, water, acetic acid and at least 0.1 wt % diacetoxyethylene.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Joseph G. Duff, Stephen Kerlegon, Kien V. Phung, Daniel Rangel-Osalde, Tatiana H. Sonnenberg, Cathy L. Tway, Hang Wang