Patents by Inventor Roger Prétôt

Roger Prétôt 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: 20100244014
    Abstract: This invention relates to electroluminescent metal complexes with triazoles and benzotriazoles, respectively of the formula a process for their preparation, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs), as oxygen sensitive indicators, as phosphorescent indicators in bioassays, and as catalysts.
    Type: Application
    Filed: June 7, 2010
    Publication date: September 30, 2010
    Inventors: THOMAS SCHÄFER, Kristina Bardon, Beat Schmidhalter, Roger Prétôt
  • Publication number: 20090253930
    Abstract: The invention relates to a process in which a compound R1COOR3 (I) is made by a transesterification reaction of an ester compound R1COOR2 (II) with an alcohol R3OH (III) in the presence of a transesterification catalyst, wherein R1 is H or C1-4 alkyl or CH2?CR4—; R2 is C1-4 alkyl; R3 is selected from the group consisting of alkyl having at least 4 carbon atoms, cycloalkyl having at least 5 carbon atoms, aryl, aralkyl, alkaryl and amino alkyl; and R4 is —H or —C1-4 alkyl, wherein alcohol R2OH (IV) is formed as a byproduct and in which said byproduct (IV) is removed by distillation in the presence of an entrainer, in which the entrainer is a compound that suppresses the formation of an azeotrope between compound (II) and byproduct (IV). The process can be useful in the preparation of esters such as dimethyl amino ethyl(meth)acrylate. The invention also provides a method of separating alcohols and esters.
    Type: Application
    Filed: November 9, 2006
    Publication date: October 8, 2009
    Inventors: John Colin Dunn, Dinesh Mistry, Martin Gower, Roger Pretot, Markus Schmid
  • Publication number: 20090062560
    Abstract: Disclosed are electroluminescent metal complexes with triazoles of the formula (I), where n1 is an integer of 1 to 3, m1 and m2 each are an integer 0, 1 or 2, M1 is a metal with an atomic weight of greater than 40, L1 is a monodentate ligand or a bidentate ligand, L2 is a monodentate ligand, Q2 stands for an organic bridging group completing, together with the bonding carbon atoms of the triazole ring, an annellated, carbocyclic or heterocyclic, non-aromatic ring, which optionally may be substituted, Q3 represents a group of forming a condensed aromatic, or heteroaromatic ring, which can optionally be substituted, as well as new intermediates for the preparation of these complexes, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs), as oxygen sensitive indicators, as phosphorescent indicators in bioassays, and as catalysts.
    Type: Application
    Filed: December 18, 2006
    Publication date: March 5, 2009
    Applicant: CIBA CORPORATION
    Inventors: Roger Pretot, Roman Kolly, Thomas Schafer, Paul Adriaan Van Der Schaaf
  • Publication number: 20080015355
    Abstract: This invention relates to electroluminescent metal complexes with triazoles and benzotriazoles, respectively of the formula (I) a process for their preparation, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs), as oxygen sensitive indicators, as phosphorescent indicators in bioassays, and as catalysts.
    Type: Application
    Filed: June 20, 2005
    Publication date: January 17, 2008
    Inventors: Thomas Schafer, Kristina Bardon, Beat Schmidhalter, Roger Pretot
  • Publication number: 20050096406
    Abstract: The invention relates to new reactive diluents of the formulae (Ia, Ib, Ic, Id, Ie) and to an alkyd coating composition comprising them. In a preferred embodiment R1 and R2 are hydrogen; R3 is (meth)acryloyloxy-methyl or phenyl para substituted by vinyl, R4 is phenyl or phenyl para substituted by vinyl or (meth)acryloyloxy; or a substituted phenyl residue of the formula —C6H4CH2—W, wherein W is (meth)acryloyloxy, or an aliphatic residue of the formula —CH2—Y-A, wherein Y is a bond, O—C1-C12alkylene, wherein the alkylene linker is linear or branched and may be interrupted once or more than once by oxygen, A is hydroxy, C1-C6alkoxy, acetoxy, (meth)acryloyloxy, or a phthalate- or maleate-residue; R5 is hydrogen; n is 1; X is —(CH2)—. The invention further relates to a solvent-based or water-based alkyd coating composition comprising 0.3 to 10 wt. % of a mono-, bis- or trisacylphosphinoxide photoinitiator, especially Irgacure 819.
    Type: Application
    Filed: February 25, 2003
    Publication date: May 5, 2005
    Inventors: Roger Pretot, Andreas Muhlebach, Wolfgang Peter, Kurt Dietliker, Tunja Jung, Clemens Auschra, Hans Kirner, Paul Van Der Schaaf