Patents by Inventor Rita A. Majewski

Rita A. Majewski 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).

  • Publication number: 20140107274
    Abstract: The present disclosure relates to a class of impact copolymer polypropylene (ICP) compositions exhibiting the advantageous combination of excellent tiger (flow) marking performance in large/long molded parts, very low gels count and exceptional mold flowability (high MFR) despite the high viscosity ratio (e.g., >4) between rubber and propylene based matrix phases. Furthermore, it has been surprisingly found that the inventive compositions are associated with a low gels count even when using a quite coarse mesh wire screen, e.g., 60 mesh wire screen, independent of screw type e.g., twin or single screw. Finally, the inventive compositions exhibit significantly reduced the levels of volatiles, and excellent stiffness-impact balance used as standalone materials or in filled compounds. The significantly reduced number of large gels leads to excellent surface appearance and paintability of the molded parts. The composition of the present disclosure is made with a bulk/gas reactor process (i.e.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 17, 2014
    Applicant: Braskem America, Inc.
    Inventors: Jeffrey S. Salek, Rita A. Majewski