Patents by Inventor Denis Cardinaud

Denis Cardinaud 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).

  • Dispersion of titanium particles comprising a binder based on polyorgansiloxane
    Patent number: 6403689
    Abstract: The invention concerns a dispersion of photocatalytic titanium dioxide particles, wherein the liquid phase comprises at least a cross-linking catalyst and at least a polyorganosiloxane either of formula (I) M&agr;D&bgr;Q&dgr;(O1/2Ri)&egr;, or of formula (II): M&agr;D&bgr;T&ggr;(O1/2Ri)&egr;. The invention also concerns the use of this dispersion for treating substrates.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: June 11, 2002
    Assignee: Rhodia Chimie
    Inventors: Corinne Lehaut, Denis Cardinaud
  • Method for obtaining organosilanes using a redistribution reaction
    Patent number: 6077967
    Abstract: An improved redistribution reaction for the preparation of organosilanes wherein a silane or silicone resin is added after the reaction to inhibit the catalyst.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: June 20, 2000
    Assignee: Rhodia Chimie
    Inventors: Denis Cardinaud, Pascale Colin
  • Aqueous silicone dispersion capable of being cross-linked into an adhesive elastomer using a condensation reaction mechanism
    Patent number: 5861459
    Abstract: The present invention relates to an aqueous silicone dispersion, capable of being cross-linked into an elastomer by removing water and optionally alcohol and/or carboxylic acid, said dispersion being based on at least one polyorganosiloxane (A) having at least two condensable or hydrolysable OR.sup.a groups per molecule wherein R.sup.a =H or alkyl, as well as at least one surficant (B). The technical problem consisting of perfecting a stable dispersion capable of being cross-linked into an elastomer that is highly adhesive on any support and that has suitable and economic mechanical properties is solved since this dispersion includes an amino-functionalised polyorganosiloxane (C) of the DTT(N)(OMe) resin type redistributed with aminoethylaminopropyltrimethoxysilane, optionally at least one hydroxylated and/or alkoxylated silicone resin (D), optionally at least on alkoxysilane (E) donating the -OR.sup.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: January 19, 1999
    Assignee: Rhone-Poulenc Chimie
    Inventors: Denis Cardinaud, Michel Feder, Christian Fischer
  • Process for the manufacture of cyclosiloxanes by depolymerization of polysiloxanes
    Patent number: 5670689
    Abstract: The present invention relates to a process for the manufacture of cyclic polydiorganosiloxanes, especially octamethylcyclotetrasiloxane (D.sub.4) and decamethylcyclopentasiloxane (D.sub.5) by depolymerization of polydiorganosiloxanes in the presence of an initiator, characterized in that the initiator comprises either:1) at least one hydroxide chosen especially from the group made up of caesium, rubidium or quaternary phosphonium hydroxides, or:2) the association of a fluorine-free caesium or rubidium salt, or of a salt of quaternary phosphoniums, with a hydroxyl-containing strong base of an alkali or alkaline-earth metal other than Cs and Rb.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: September 23, 1997
    Assignee: Rhone-Poulenc Chimie
    Inventors: Christian Allandrieu, Denis Cardinaud