Patents by Inventor David J. Kneiling

David J. Kneiling 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).

  • Compatibilized silica and polymer silica-reinforced masterbatch containing same
    Patent number: 5985953
    Abstract: A compatibilized silica for incorporation into natural and synthetic polymers in latex form or dry blending operations is described. Said compatibilized silica is formed by the reaction of precipitated or fumed silica with organosilicon coupling compounds in aqueous suspension. Polymer-silica reinforced masterbatches are prepared by addition of the compatibilized silica slurry to natural and synthetic polymer latices. Also described is a process for preparing the compatibilized silica.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: November 16, 1999
    Assignee: DSM Copolymer, Inc.
    Inventors: John W. Lightsey, David J. Kneiling, John M. Long, Andrew C. Kolbert
  • Process for producing improved silica-reinforced masterbatch of polymers prepared in latex form
    Patent number: 5763388
    Abstract: A process for the incorporation of silica into a polymer in latex in which a silica is treated with an organo silicon compound coupling agent in aqueous suspension to form a compatibilized silica and then contacting a polymer latex with the compatibilized silica whereby the silica becomes substantially uniformly distributed throughout the latex and can be recovered when the latex is coagulated to yield little residual silica in the liquid residue from the latex. Also described is a process for preparing the compatibilized silica.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: June 9, 1998
    Assignee: DSM Copolymer, Inc.
    Inventors: John W. Lightsey, David J. Kneiling, John M. Long