Patents by Inventor Bhaskar D. Kulkarni

Bhaskar D. Kulkarni 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 continuous transvinylation of carboxylic acids with vinyl acetate
    Patent number: 8975437
    Abstract: A continuous process is provided for selective formation of a vinyl ester by reactive distillation from a corresponding carboxylic acid. Carboxylic acid, vinyl acetate, and a palladium acetate—bidentate ligand catalyst complex are provided and reacted in a typical embodiment. Acetic acid and vinyl acetate are continuously removed from the reaction mixture and vinyl acetate is recycled to the reaction mixture. The vinyl ester product is separated from the vinyl acetate, residual carboxylic acid, residual acetic acid, and catalyst.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: March 10, 2015
    Assignee: Celanese International Corporation
    Inventors: Ilias S. Kotsianis, Barbara F. M. Kimmich, Melchior A. Meilchen, Hang Wang, Prashant P. Barve, Bhaskar D. Kulkarni, Gopal M. Chaphekar, Ravindra W. Shinde, Milind Y. Gupte, Sanjay P. Kamble, Satish N. Shintre
  • Process for the semi-continuous transvinylation of carboxylic acids with vinyl acetate
    Patent number: 8921593
    Abstract: A semi-continuous process is provided for selective formation of a vinyl ester by reactive distillation from a corresponding carboxylic acid. Carboxylic acid, vinyl acetate, and a palladium acetate—bidentate ligand catalyst complex are provided and reacted in a typical embodiment. Acetic acid and vinyl acetate are continuously removed from the reaction mixture and vinyl acetate is recycled to the reaction mixture. The vinyl ester product is separated from the vinyl acetate, residual carboxylic acid, residual acetic acid, and catalyst.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: December 30, 2014
    Assignee: Celanese International Corporation
    Inventors: Ilias S. Kotsianis, Barbara F. M. Kimmich, Melchior A. Meilchen, Hang Wang, Prashant P. Barve, Bhaskar D. Kulkarni, Gopal M. Chaphekar, Ravindra W. Shinde, Milind Y. Gupte, Sanjay P. Kamble, Satish N. Shintre
  • Process for the continuous transvinylation of carboxylic acids with vinyl acetate
    Publication number: 20110275853
    Abstract: A continuous process is provided for selective formation of a vinyl ester by reactive distillation from a corresponding carboxylic acid. Carboxylic acid, vinyl acetate, and a palladium acetate—bidentate ligand catalyst complex are provided and reacted in a typical embodiment. Acetic acid and vinyl acetate are continuously removed from the reaction mixture and vinyl acetate is recycled to the reaction mixture. The vinyl ester product is separated from the vinyl acetate, residual carboxylic acid, residual acetic acid, and catalyst.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 10, 2011
    Inventors: Ilias S. Kotsianis, Barbara F.M. Kimmich, Melchior A. Meilchen, Hang Wang, Prashant P. Barve, Bhaskar D. Kulkarni, Gopal M. Chaphekar, Ravindra W. Shinde, Milind Y. Gupte, Sanjay P. Kamble, Satish N. Shintre
  • Process for the semi-continuous transvinylation of carboxylic acids with vinyl acetate
    Publication number: 20110275852
    Abstract: A semi-continuous process is provided for selective formation of a vinyl ester by reactive distillation from a corresponding carboxylic acid. Carboxylic acid, vinyl acetate, and a palladium acetate—bidentate ligand catalyst complex are provided and reacted in a typical embodiment. Acetic acid and vinyl acetate are continuously removed from the reaction mixture and vinyl acetate is recycled to the reaction mixture. The vinyl ester product is separated from the vinyl acetate, residual carboxylic acid, residual acetic acid, and catalyst.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 10, 2011
    Inventors: Ilias S. Kotsianis, Barbara F.M. Kimmich, Melchior A. Meilchen, Hang Wang, Prashant P. Barve, Bhaskar D. Kulkarni, Gopal M. Chaphekar, Ravindra W. Shinde, Milind Y. Gupte, Sanjay P. Kamble, Satish N. Shintre
  • Process for the preparation of caprolactam
    Patent number: 5594137
    Abstract: A process for the preparation of caprolactam by reacting cyclohexanone oxime with a cationic or nonionic surfactant and a cosurfactant in dilute sulfuric acid at a temperature in the range of 15.degree. C. to 40.degree. C., neutralizing excess acid present in the solution and recovering the caprolactam from the solution by filtration.
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: January 14, 1997
    Assignee: Council of Scientific and Industrial Research
    Inventors: Brajesh K. Jha, Ajay S. Chhatre, Bhaskar D. Kulkarni, Subramanian Sivasanker
  • Process for the preparation of caprolactam
    Patent number: 5401843
    Abstract: A process for the preparation of caprolactam by reacting cyclohexanone oxime with an anionic surfactant and a cosurfactant in dilute sulfuric acid at a temperature in the range of 15.degree. C. to 40.degree. C., neutralising excess acid present in the solution and from the solution by filtration.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: March 28, 1995
    Assignee: Council of Scientific and Industrial Research
    Inventors: Brajesh K. Jha, Ajay S. Chhatre, Bhaskar D. Kulkarni, Subramanian Sivasanker