Patents by Inventor Roman Popielarz

Roman Popielarz 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).

  • Method for determining properties of a polymer coating or film cured by cationic polymerization
    Patent number: 5955002
    Abstract: A method for monitoring a property of a cationically curable composition comprising the steps of: adding a fluorescence probe to a cationically curable composition; measuring the intensity of the fluorescence emission of the probe at a wavelength at which intensity changes in response to changes occurring in the composition, wherein the fluorescence probe is a compound of the formula (I): ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are the same or different and represent hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.1 -C.sub.20 alkoxyl, C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkenoxyl, C.sub.3 -C.sub.27 cycloaliphatic, C.sub.7 -C.sub.27 aralkyl, C.sub.7 -C.sub.27 aralkoxyl, C.sub.7 -C.sub.27 alkaryl, or a substituted or unsubstituted diphenyl ether having the structure R.sup.9 --C.sub.6 H.sub.4 --O--C.sub.6 H.sub.4 R.sup.10 where R.sup.9 and R.sup.10 may be hydrogen, alkyl, aryl or aralkyl; and R.sup.1,R.sup.2 and R.sup.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: September 21, 1999
    Assignee: Spectra Group Limited, Inc.
    Inventors: Douglas C. Neckers, Kathleen G. Specht, Kesheng Feng, Roman Popielarz