A method is described of preparing (poly)isocyanurate polyisocyanates by catalytic cyclotrimerization of isocyanates. A catalytic system is used which includes a cyclotrimerization catalyst based on a quatemary ammonium salt and imidazole as a cocatalyst.

 
Web www.patentalert.com

< Method for preparing silicone oils by hydrosilylation with polyorganohydrogenosiloxanes and units containing at least one hydrocarbon ring including an oxygen atom, in the presence of a heterogeneous catalytic composition

< Aqueous dispersion based on viscous silicone oils crosslinkable by condensation into an adhering elastomer for use in particular as sealants or paints, preparation method

> Process for the formation of urethane via transcarbamation

> Composition based on nanoparticles or a nanolatex of polymers for fabric care
~ 00282