Patents by Inventor Hassan El Ghobary

Hassan El Ghobary 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).

  • Patent number: 6818675
    Abstract: A process for preparing a polyurethane foam is provided which comprises reacting a polyisocyanate and an active hydrogen-containing component, including water and an organic polyol, in the presence of a catalytically effective amount of a delayed action amine catalyst system, and optionally an organotin catalyst. The delayed action catalyst is composed of the reaction product of (a) one or more carboxylic acids having hydroxy and/or halo functionality; (b) one or more tertiary amine ureas; and, optionally, (c) a reactant selected from the group consisting of specific reactive tertiary amine(s), specific tertiary amine carbamate(s) and mixture thereof.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: November 16, 2004
    Assignee: General Electric Company
    Inventors: Hassan El Ghobary, Louis Muller
  • Publication number: 20040152796
    Abstract: A process for preparing a polyurethane foam is provided which comprises reacting a polyisocyanate and an active hydrogen-containing component, e.g.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Applicant: CROMPTON CORPORATION
    Inventors: Louis Muller, Hassan El Ghobary, Fabrice Ponthet
  • Publication number: 20040029986
    Abstract: A process for preparing a polyurethane foam is provided which comprises reacting a polyisocyanate and an active hydrogen-containing component, including water and an organic polyol, in the presence of a catalytically effective amount of a delayed action amine catalyst system, and optionally an organotin catalyst.
    Type: Application
    Filed: August 6, 2002
    Publication date: February 12, 2004
    Applicant: CROMPTON CORPORATION
    Inventors: Hassan El Ghobary, Louis Muller
  • Patent number: 6660781
    Abstract: A process for preparing a polyurethane foam, especially according to the one-shot foaming process the quasi-prepolymer process and the prepolymer process, by reactions between a polyisocyanate and an active hydrogen-containing component including water and an organic polyol wherein said reactions are conducted in the presence of a reaction product formed by reaction between a tertiary amnine and an aryloxy substituted carboxylic acid.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: December 9, 2003
    Assignee: Witco Corporation
    Inventors: Hassan El Ghobary, Louis Muller
  • Patent number: 6423756
    Abstract: An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and an active hydrogen-containing component wherein said reactions are conducted in the presence of catalysts composed of (a) at least one specific tertiary amine carbamate (formed by the reaction of reactive tertiary amine and polyisocyanate) and, optionally, (b) salts formed by the reaction between the specific tertiary amine carbamate(s) and hydroxy- and/or halo-carboxylic acids. The specific tertiary amine carbamates in the subject invention are dimethylaminoethoxyethyl carbamate, bis(dimethylaminopropyl)amino-2-propyl carbamate, dimethylaminoethyl carbamate, and mixtures thereof.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: July 23, 2002
    Assignee: Crompton Corporation
    Inventors: Hassan El Ghobary, Louis Muller
  • Patent number: 6395796
    Abstract: A process for preparing a polyurethane foam, especially according to the one-shot foaming process, the quasi-prepolymer process and the prepolymer process by reactions between a polyisocyanate and an active hydrogen-containing component including water and an organic polyol wherein said reactions are conducted in the presence of a reaction product formed by reaction between a tertiary amine and a carboxylic acid having halo functionality and optional hydroxyl functionality.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: May 28, 2002
    Assignee: Crompton Corporation
    Inventors: Hassan El Ghobary, Louis Muller
  • Patent number: 6387972
    Abstract: An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and a polyfunctional isocyanate-reactive component wherein said reactions are conducted in the presence of catalysts composed of (a) a specific reactive tertiary amine compound selected from the group consisting of bis(dimethylaminopropyl)amino-2-propanol, bis(dimethylaminopropyl)amine, dimethylaminopropyldipropanolamine, bis(dimethylamino)-2-propanol, N,N,N′-trimethyl-N′-hydroxyethyl-bis(aminoethyl)ether and mixtures thereof; and (b) at least one carboxylic acid salt of the specific reactive tertiary amine compound selected from the group consisting of hydroxy-carboxylic acid salts and halo-carboxylic acid salts.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: May 14, 2002
    Assignee: Crompton Corporation
    Inventors: Hassan El Ghobary, Louis Muller