Patents by Inventor Ibrahim Bechara

Ibrahim Bechara 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 a polyolefin emulsion and hybrid polyolefin-polyurethane dispersion derived therefrom
    Patent number: 7160944
    Abstract: A process for making an aqueous emulsion of polyolefin employs a functionalized emulsification facilitating compound. The aqueous emulsion can be used to prepare a hybrid polyolefin-polyurethane dispersion useful, inter alia, as an adhesion-promoting coating for polymers such as the polyolefins.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: January 9, 2007
    Assignee: Crompton Corporation
    Inventors: Ibrahim Bechara, Pavel Ilmenev, Oleg Tselnik
  • Process for the preparation of a polyolefin emulsion and hybrid polyolefin-polyurethane dispersion derived therefrom
    Publication number: 20040260008
    Abstract: A process for making an aqueous emulsion of polyolefin employs a functionalized emulsification facilitating compound. The aqueous emulsion can be used to prepare a hybrid polyolefin-polyurethane dispersion useful, inter alia, as an adhesion-promoting coating for polymers such as the polyolefins.
    Type: Application
    Filed: June 17, 2003
    Publication date: December 23, 2004
    Applicant: CROMPTON CORPORATION
    Inventors: Ibrahim Bechara, Pavel Ilmenev, Oleg Tselnik
  • Process for the preparation of a self-emulsifiable polyolefin emulsion and hybrid polyolefin-polyurethane dispersion derived therefrom
    Patent number: 6774181
    Abstract: A process for making an aqueous emulsion of self-emulsifiable polyolefin employs a high molecular weight functionalized polyolefin and a hydrophilic polymer. The aqueous emulsion can be used to prepare a hybrid polyolefin-polyurethane dispersion useful, inter alia, as an adhesion-promoting coating for polymers such as the polyolefins.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: August 10, 2004
    Assignee: Crompton Corporation
    Inventors: Ibrahim Bechara, Pavel Ilmenev, Oleg Tselnik
  • Polyurethane dispersions
    Publication number: 20030220463
    Abstract: Polyurethane dispersions are disclosed that are prepared from low free-diisocyanate polyurethane prepolymers modified by the addition of pendent anionic, cationic, or nonionic moieties.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 27, 2003
    Applicant: CROMPTON CORPORATION
    Inventors: Ibrahim Bechara, Anatoly Lipkin
  • Sizing composition
    Patent number: 6465559
    Abstract: A sizing composition which includes an anionic or cationic polyurethane dispersion, a polyolefin wax and a coupling agent.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: October 15, 2002
    Assignee: Crompton Corporation
    Inventors: Ibrahim Bechara, Biau-Hung Chang, Pavel Ilmenev
  • Cationic polyurethane dispersion and composition containing same
    Patent number: 6339125
    Abstract: A polyurethane dispersion which is the reaction product of a prepolymer and a water or hydrazine chain extender. The prepolymer is the reaction product of a hydroxylated polyalkadiene, a bis(hydroxyalkyl) quaternary ammonium-group-containing diol and a polyisocyanate.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: January 15, 2002
    Assignee: Crompton Corporation
    Inventors: Ibrahim Bechara, Biau-Hung Chang, Pavel Ilmenev
  • Cationic polyurethane compositions, quaternary ammonium salts and methods for their preparation
    Patent number: 6221954
    Abstract: The preparation and use of quarternized bis hydroxy alkyl amines by the reaction of a tertiary amine and an alkylene oxide in a strong acid system are disclosed. Cationic polyurethane compositions containing pendent hydroxy alkyl groups and methods for their preparation are also disclosed.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 24, 2001
    Assignee: Witco Corporation
    Inventors: Ibrahim Bechara, Thomas R. Baranowski
  • Scorch resistant additives for polyurethane foams
    Patent number: 6051620
    Abstract: Polyester polyols which contain at least one dihydrazide linkage --C(.dbd.O)--NHNH--C(.dbd.O)-- reduce the incidence of scorching when used as a reactant in the manufacture of polyurethane foam. Also disclosed are compounds of structures (2) and (3):D--HN(--NH--C(.dbd.O)--R--C(.dbd.O)NH).sub.0-1 --NH--D (2)(A--C(.dbd.T)--NH)--.sub.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: April 18, 2000
    Assignee: CK Witco Corporation
    Inventors: Ibrahim Bechara, Thomas R. Baranowski, James Stogis, Thomas H. Morong
  • Polyurethane dispersions useful for preparing thin wall articles
    Patent number: 5998540
    Abstract: Disclosed are aqueous polyurethane dispersions prepared from polyester polyols having 0.95 to 1.5 equivalents of carboxylic functionality thereon per equivalent of polyol, the dispersions also containing a nonionic surfactant component wherein the ratio by weight of said carboxylic functionality to said nonionic surfactant component is 1:2.5 to 1:0.5. The dispersions are particularly adapted to the formation of thin wall articles exhibiting greatly improved properties.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: December 7, 1999
    Assignee: Witco Corporation
    Inventors: Anatoly Lipkin, Ibrahim Bechara
  • Hypoallergenic coating composition for latex rubber gloves
    Patent number: 5985955
    Abstract: Disclosed are aqueous dispersions of polyurethane polymers from which films can be formed which have enhanced hydrophilicity. The enhanced hydrophilicity is provided by hydrophilic moieties chemically incorporated in the polymer network.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: November 16, 1999
    Assignee: Witco Corporation
    Inventors: Ibrahim Bechara, Frank Bonney, Konstantinos Arvanitis
  • Cationic polyurethane compositions, quaternary ammonium salts and methods for their preparation
    Patent number: 5696291
    Abstract: The preparation and use of quarternized bis hydroxy alkyl amines by the reaction of a tertiary amine and an alkylene oxide in a strong acid system are disclosed. Cationic polyurethane compositions containing pendent hydroxy alkyl groups and methods for their preparation are also disclosed.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: December 9, 1997
    Assignee: Witco Corporation
    Inventors: Ibrahim Bechara, Thomas R. Baranowski
  • Cationic polyurethane compositions, quaternary ammonium salts and methods for their preparation
    Patent number: 5561187
    Abstract: The preparation and use of quarternized bis hydroxy alkyl amines by the reaction of a tertiary amine and an alkylene oxide in a strong acid system are disclosed. Cationic polyurethane compositions containing pendent hydroxy alkyl groups and methods for their preparation are also disclosed.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: October 1, 1996
    Assignee: Witco Corporation
    Inventors: Ibrahim Bechara, Thomas R. Baranowski