Method for Producing Oligo- And/or Polysiloxanes And/or N-substituted Urea Derivatives

The invention relates to a method for producing oligo- or polysiloxanes, which are widely used as silicone oils, silicone rubbers (elastomers), and silicone resins, and for producing N-substituted urea derivatives. The oligo- or polysiloxanes produced according to the invention are suitable for, inter alia, hydrophobing glass, ceramic, textiles, or leather, and as lubricants for plastics processing, lubricants in plastic gearing, polishing agent additives, for preventing pigments from floating in pigmented coatings, as manometer fluid, collectors in flotation processes and for use in defoamer formulas, hydraulic fluids, release agents, printing ink, or metal cleaning agents. The N-substituted urea derivatives produced according to the invention are suitable for use as flame retardants, in pharmaceuticals, but also in organic synthesis. The method according to the invention for producing oligo- and/or polysiloxanes and/or N-substituted urea derivatives is based on inserting CO2 into an aminosilane, which has at least 2 amino groups, in order to form silyl carbamate. Subsequently, the obtained silyl carbamate is pyrolyzed to form oligo- or polysiloxane, carbon dioxide, and N-substituted urea.

WO 2,011,048,159


Type of Offer: Sale

Next Patent »
« More Hydrogen and Fuel Cells Patents

Share on      

CrowdSell Your Patent