Patents by Inventor Eugene Sitzman

Eugene Sitzman 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).

  • Thermally stable cationic photocurable compositions
    Publication number: 20070225395
    Abstract: Disclosed are cationic photocurable compositions with improved shelf life stability. The thermally stable compositions comprise at least one cationically polymerizable compound, for example an epoxy compound, at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers. Also disclosed is a cationic photoinitiator composition comprising at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers.
    Type: Application
    Filed: May 14, 2007
    Publication date: September 27, 2007
    Inventors: Jean-Pierre Wolf, Stephen Ilg, Jean-Luc Birbaum, Eugene Sitzman, David Bramer, Greg Losapio
  • Photo-cured and stabilized coatings
    Patent number: 7173071
    Abstract: Photo-curable coating formulations which comprise a durable and/or red-shifted reactable hydroxyphenylbenzotriazole ultraviolet light absorber (UVA) are effectively photocured employing a combination of ?-hydroxy ketone and bisacylphosphine oxide photoinitiators. The reactable UVA's are reacted into the coating upon curing. The combination of the photoinitiators bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 1-hydroxycyclohexylphenylketone is especially effective for this purpose.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: February 6, 2007
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Joseph Suhadolnik, Mervin Wood, Ramanathan Ravichandran, Walter Renz, Andrea Roberts, Nancy Cliff, Eugene Sitzman, David Bramer
  • Thermally stable cationic photocurable compositions
    Publication number: 20050165141
    Abstract: Disclosed are cationic photocurable compositions with improved shelf life stability. The thermally stable compositions comprise at least one cationically polymerizable compound, for example an epoxy compound, at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers. Also disclosed is a cationic photoinitiator composition comprising at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers.
    Type: Application
    Filed: January 21, 2005
    Publication date: July 28, 2005
    Inventors: Jean-Pierre Wolf, Stephen Ilg, Jean-Luc Birbaum, Eugene Sitzman, David Bramer, Greg Losapio