Patents by Inventor Steven R. Rapacki

Steven R. Rapacki 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).

  • COMPOSITION, POLYMER COMPOSITE ARTICLE FORMED THEREWITH, AND METHOD OF PREPARING SAME
    Publication number: 20200369866
    Abstract: A composition and a method for preparing a polymer composite article. The composition comprises (A) a filler in an amount of from 10 to 90 wt. %. The composition also comprises (B) a polymer in an amount of from 10 to 90 wt. %, wherein the (B) polymer comprises a polyvinyl. Further, the composition comprises (C) an organopolysiloxane in an amount of from greater than 0 to 10 wt. %; the (C) organopolysiloxane having at least one silicon-bonded hydroxyl group and a viscosity of from 1,000 to 60,000 mPa·s at 25° C. The ranges for components (A)-(C) are based on the total weight of components (A), (B) and (C) in the composition.
    Type: Application
    Filed: February 1, 2019
    Publication date: November 26, 2020
    Inventors: Keith BRUCE, Igor CHORVATH, Marc-Andre COURTEMANCHE, Jon V. DEGROOT, JR., Sean GAAL, Craig GROSS, Hailan GUO, James KEENIHAN, Shawn MEALEY, Scott MILLER, Tom PARSONS, Steven R. RAPACKI, Andrew SCHLADER, Cristina SERRAT, Lauren TONGE
  • Polyvinyl chloride pipe
    Patent number: 10647843
    Abstract: The present invention relates to non-oriented and oriented polyvinyl chloride pipe comprising: a) polyvinyl chloride; b) from 2 to 5 parts by weight of polymeric processing aid per 100 parts by weight of the polyvinyl chloride; and c) from 1.6 to 2.0 parts by weight percent of a paraffin wax per 100 parts by weight of the polyvinyl chloride. The polyvinyl chloride pipe of the present invention comprises a concentration of paraffin wax lubricant (>1.5 parts per 100 parts polyvinyl chloride) heretofore unrecognized in the art, without the loss of key physical properties.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: May 12, 2020
    Assignee: Rohm and Haas Company
    Inventors: Michael T. Petr, Steven R. Rapacki
  • POLYVINYL CHLORIDE PIPE
    Publication number: 20190092935
    Abstract: The present invention relates to non-oriented and oriented polyvinyl chloride pipe comprising: a) polyvinyl chloride; b) from 2 to 5 parts by weight of polymeric processing aid per 100 parts by weight of the polyvinyl chloride; and c) from 1.6 to 2.0 parts by weight percent of a paraffin wax per 100 parts by weight of the polyvinyl chloride. The polyvinyl chloride pipe of the present invention comprises a concentration of paraffin wax lubricant (>1.5 parts per 100 parts polyvinyl chloride) heretofore unrecognized in the art, without the loss of key physical properties.
    Type: Application
    Filed: April 19, 2017
    Publication date: March 28, 2019
    Inventors: Michael T. Petr, Steven R. Rapacki