Patents by Inventor Johannes Wilhemus Maria Schellekens

Johannes Wilhemus Maria Schellekens 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).

  • Patent number: 7728075
    Abstract: The invention relates to a high gloss car wash-resistant coating composition comprising a hydroxyl-functional binder and a cross-linker reactive with the hydroxyl groups of the binder and a method to prepare such a car wash-resistant coating. The invention further relates to the use of said coating composition, as a pigment-free top coat or a clear coat, in the finishing and refinishing of articles, for example motorcycles, cars, trains, buses, trucks, and aeroplanes. The coating composition after curing forms a coating having an initial gloss of at least 81 GU and a loss of gloss (LoG) of less than 0.18, the loss of gloss being determined by the formula (I): LoG=A+B·E?·(X)?1·10(C·?Tg)+D·(E?)?0.5; wherein A=0.0132, B=1.0197, C=0.0113, and D=0.0566, E? reflects the tensile storage modulus at 40° C. in GPa, ?Tg the width of the glass transition temperature in ° C., and X the cross-link density parameter in kPA/K all three parameters determined in a DMTA test at 11 Hz and a heating rate of 5° C./min.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: June 1, 2010
    Assignee: Nuplex Resins B.V.
    Inventors: Johannes Wilhemus Maria Schellekens, Martin Bosma, Freddy Gerhard Hendrikus Van Wijk, Paul Marie Vandevoorde