Patents by Inventor Maxine Doran

Maxine Doran 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 the preparation of halogenated alkenes by dehydrohalogenation of halogenated alkanes
    Patent number: 10442743
    Abstract: The present invention provides a process for the preparation of a (hydro)(chloro)fluoroalkene by contacting a reagent stream comprising a hydrochlorofluoroalkane with a catalyst in a reactor to dehydrochlorinate at least a portion of the hydrochlorofluoroalkane to produce a product stream comprising the (hydro)(chloro)fluoroalkene and hydrogen chloride (HCl), wherein the catalyst is selected from the group consisting of metal oxide catalysts, metal halide catalysts, zero-valent metal catalysts, carbon-based catalysts and mixtures thereof, and wherein (i) the catalyst is chlorinated prior to contacting it with the reagent stream comprising the hydrochlorofluoroalkane; and/or (ii) the contacting step is carried out in the presence of a HCl co-feed.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: October 15, 2019
    Assignee: MEXICHEM AMANCO HOLDING S.A. de C.V.
    Inventors: Andrew Paul Sharratt, Claire Nicola Rees, Maxine Doran
  • PROCESS FOR THE PREPARATION OF HALOGENATED ALKENES BY DEHYDROHALOGENATION OF HALOGENATED ALKANES
    Publication number: 20180265436
    Abstract: The present invention provides a process for the preparation of a (hydro)(chloro)fluoroalkene by contacting a reagent stream comprising a hydrochlorofluoroalkane with a catalyst in a reactor to dehydrochlorinate at least a portion of the hydrochlorofluoroalkane to produce a product stream comprising the (hydro)(chloro)fluoroalkene and hydrogen chloride (HCl), wherein the catalyst is selected from the group consisting of metal oxide catalysts, metal halide catalysts, zero-valent metal catalysts, carbon-based catalysts and mixtures thereof, and wherein (i) the catalyst is chlorinated prior to contacting it with the reagent stream comprising the hydrochlorofluoroalkane; and/or (ii) the contacting step is carried out in the presence of a HCl co-feed.
    Type: Application
    Filed: April 16, 2018
    Publication date: September 20, 2018
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: ANDREW PAUL SHARRATT, CLAIRE NICOLA REES, MAXINE DORAN
  • Process for the preparation of halogenated alkenes by dehydrohalogenation of halogenated alkanes
    Patent number: 9944578
    Abstract: The present invention provides a process for the preparation of a (hydro)(chloro)fluoroalkene by contacting a reagent stream comprising a hydrochlorofluoroalkane with a catalyst in a reactor to dehydrochlorinate at least a portion of the hydrochlorofluoroalkane to produce a product stream comprising the (hydro)(chloro)fluoroalkene and hydrogen chloride (NCI), wherein the catalyst is selected from the group consisting of metal oxide catalysts, metal halide catalysts, zero-valent metal catalysts, carbon-based catalysts and mixtures thereof, and wherein (i) the catalyst is chlorinated prior to contacting it with the reagent stream comprising the hydrochlorofluoroalkane; and/or (ii) the contacting step is carried out in the presence of a HCI co-feed.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: April 17, 2018
    Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: Andrew Paul Sharratt, Claire Nicola Rees, Maxine Doran
  • PROCESS FOR THE PREPARATION OF HALOGENATED ALKENES BY DEHYDROHALOGENATION OF HALOGENATED ALKANES
    Publication number: 20170253543
    Abstract: The present invention provides a process for the preparation of a (hydro)(chloro)fluoroalkene by contacting a reagent stream comprising a hydrochlorofluoroalkane with a catalyst in a reactor to dehydrochlorinate at least a portion of the hydrochlorofluoroalkane to produce a product stream comprising the (hydro)(chloro)fluoroalkene and hydrogen chloride (NCI), wherein the catalyst is selected from the group consisting of metal oxide catalysts, metal halide catalysts, zero-valent metal catalysts, carbon-based catalysts and mixtures thereof, and wherein (i) the catalyst is chlorinated prior to contacting it with the reagent stream comprising the hydrochlorofluoroalkane; and/or (ii) the contacting step is carried out in the presence of a HCI co-feed.
    Type: Application
    Filed: July 27, 2015
    Publication date: September 7, 2017
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: Andrew Paul Sharratt, Claire Nicola Rees, Maxine Doran