Patents by Inventor Maurice Laurijs

Maurice Laurijs 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).

  • Stabilized compositions of polycarbonates and vinylidene substituted aromatic compounds
    Patent number: 11781007
    Abstract: A composition comprising: one or more polycarbonates; one or more vinylidene aromatic substituted polymers; and a buffer system that controls the pH in water at 25° C. at a value of about 6.0 to about 8.0. The composition may comprise the buffer system that has a pKa between about 4 and about 10. The composition may comprise: from about 10 or 50 to about 95 percent by weight of the one or more polycarbonates; from about 0.5 or about 10 to about 50 or about 90 percent by weight of the one or more vinylidene aromatic substituted monomers; and from about 0.005 percent to about 0.050 percent by weight of the buffer system; wherein weight is based on the total weight of the composition. The buffer system may be present in an amount from about 0.010 percent to about 0.040 percent by weight.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: October 10, 2023
    Assignee: TRINSEO EUROPE GMBH
    Inventors: Claude T. E. Van Nuffel, Gilbert Bouquet, Maurice Laurijs
  • STABILIZED COMPOSITIONS OF POLYCARBONATES AND VINYLIDENE SUBSTITUTED AROMATIC COMPOUNDS
    Publication number: 20220267585
    Abstract: A composition comprising: one or more polycarbonates; one or more vinylidene aromatic substituted polymers; and a buffer system that controls the pH in water at 25° C. at a value of about 6.0 to about 8.0. The composition may comprise the buffer system that has a pKa between about 4 and about 10. The composition may comprise: from about 10 or 50 to about 95 percent by weight of the one or more polycarbonates; from about 0.5 or about 10 to about 50 or about 90 percent by weight of the one or more vinylidene aromatic substituted monomers; and from about 0.005 percent to about 0.050 percent by weight of the buffer system; wherein weight is based on the total weight of the composition. The buffer system may be present in an amount from about 0.010 percent to about 0.040 percent by weight.
    Type: Application
    Filed: August 21, 2020
    Publication date: August 25, 2022
    Inventors: Claude T.E. Van Nuffel, Gilbert Bouquet, Maurice Laurijs