Patents by Inventor Philippe Michaud

Philippe Michaud 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).

  • Novel imido polymers
    Patent number: 5053474
    Abstract: Novel thermally stable imido polymers, whether in prepolymeric or cured state, well adapted for the production of prepregs and other useful shaped articles, include the copolymerizates of:(a) at least one maleic N,N'-bisimide;(b) at least one hindered diprimary diamine of the 4,4'-diamino-3,3',5,5'-tetraalkyldiphenylmethane or 1,3-or 1,4-diaminotrialkylbenzene type;(c) optionally, at least one comonomer other than a bisimide and containing one or more polymerizable carbon-carbon double bonds;(d) optionally, an imidazole compound; and(e) at least one chlorinated or brominated epoxy resin, N,N'-alkylenebistetrahalophthalimide and/or a compound containing two phenyl radicals bonded directly together via a single valence bond, a divalent radical or a bridging atom, in which each phenyl radical is substituted by a (meth)allyloxy radical and by at least two chlorine or bromine atoms.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: October 1, 1991
    Assignee: Rhone-Poulenc Chimie
    Inventors: Yves Camberlin, Philippe Michaud
  • Preparation of thermally stable copolyimidoamides containing diorganopolysiloxane recurring units
    Patent number: 4985527
    Abstract: Thermally stable copolyimidoamides containing recurring diorganopolysiloxane structural units are improvedly prepared by directly interreacting, in a solvent medium:(i) a diisocyanate of the formula: ##STR1## (ii) a monoanhydride of a tricarboxylic acid of the formula: ##STR2## (iii) a siloxane diisocyanate of the formula: ##STR3##
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: January 15, 1991
    Assignee: Rhone-Poulenc Chimie
    Inventors: Philippe Michaud, Christian Prud'Homme
  • Thermally stable (imide/amide)/(urea/siloxane) block copolymers
    Patent number: 4950728
    Abstract: Thermally stable block copolymers, well adapted for the production of coating films, include recurring imide/amide blocks of the formula: ##STR1## and recurring urea/siloxane blocks of the formula:--NH--CO--NH--A--NH--CO--NH-- (II)wherein A is a divalent diorganosiloxane radical of the formula ##STR2##
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: August 21, 1990
    Assignee: Rhone-Poulenc Chimie
    Inventors: Pascal Barthelemy, Yves Camberlin, Philippe Michaud
  • Alkenyloxylated aromatic polyamidoimides
    Patent number: 4927899
    Abstract: Novel curable aromatic polyamidoimides having alkenyloxy end groups, well adopted as coating solutions or for the production of solid shaped articles, are prepared by the direct interreaction among (i) an aromatic diisocyanate, (ii) a monoanhydride of a tricarboxylic acid and (iii) an alkenyloxylated monocarboxylic acid, and have the following structural formula (I): ##STR1##
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: May 22, 1990
    Assignee: Rhone-Poulenc Chimie
    Inventors: Philippe Michaud, Yves Camberlin
  • Aromatic polyamidoimides having maleimido end groups
    Patent number: 4927900
    Abstract: Novel curable aromatic polyamidoimides having maleimido end groups, well adopted as coating solutions or for the production of solid shaped articles, are prepared by the direct interreaction among (i) an aromatic diisocyanate, (ii) a monoanhydride of a tricarboxylic acid and (iii) a monocarboxylic acid bearing a maleimido substituent, and have the following structural formula (I): ##STR1##
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: May 22, 1990
    Assignee: Rhone-Poulenc Chimie
    Inventors: Philippe Michaud, Yves Camberlin