Patents by Inventor Rosamma ALEX

Rosamma ALEX 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 carbon black/silica/nanoclay master batch from fresh natural rubber latex
    Patent number: 8716366
    Abstract: The present invention relates to a process for preparing tri-filler incorporated natural rubber master batch. The fillers used in the present invention are carbon black, silica and nano-clay (modified montmorillonite clay, Cloisite 93 A). The process of preparing fillers incorporated master batch involves preparation of the individual filler dispersions by mixing each filler with surfactants. Further fresh rubber latex is soap sensitized by mixing it with surfactant. The filler dispersions are added to the soap sensitized rubber latex slowly under stirring to form the master mix. Then the master mix is coagulated by the addition of acid to form coagulum. The coagulum is dewatered and dried to obtain filler incorporated natural rubber master batch.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: May 6, 2014
    Inventors: Rosamma Alex, Kavumnadayil Krishnan Sasidharan, James Jacob
  • NOVEL PROCESS FOR THE PREPARATION OF CARBON BLACK/SILICA/NANOCLAY MASTER BATCH FROM FRESH NATURAL RUBBER LATEX
    Publication number: 20130079444
    Abstract: The present invention relates to a process for preparing tri-filler incorporated natural rubber master batch. The fillers used in the present invention are carbon black, silica and nano-clay (modified montmorillonite clay, Cloisite 93 A). The process of preparing fillers incorporated master batch involves preparation of the individual filler dispersions by mixing each filler with surfactants. Further fresh rubber latex is soap sensitized by mixing it with surfactant. The filler dispersions are added to the soap sensitized rubber latex slowly under stirring to form the master mix. Then the master mix is coagulated by the addition of acid to form coagulum. The coagulum is dewatered and dried to obtain filler incorporated natural rubber master batch.
    Type: Application
    Filed: July 25, 2012
    Publication date: March 28, 2013
    Applicant: RUBBER RESEARCH INSTITUTE OF INDIA
    Inventors: Rosamma ALEX, Kavumnadayil Krishnan SASIDHARAN, James JACOB