Continuous oligomerization of isocyanates
AssigneesCentre National de la Recherche Scientifique (CNR, Institue National Polytechnique De Toulouse, Perstorp France
InventorsHocine Kabir, Johannes Schwarz, Christophe Gourdon, Sébastien Elgue
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Abstract
A process for oligomerizing isocyanates includes a step of continuous conversion of an isocyanate monomer into polyisocyanate containing carbamate and/or allophanate groups, in the presence of a catalyst, wherein the conversion step is carried out in a reactor having a specific heat exchange coefficient of greater than or equal to approximately 200 kW/m3/° C.
Claims13
-12. (canceled)
A method for oligomerization of isocyanates comprising a step for continuous conversion of an isocyanate monomer into a polyisocyanate containing carbamate and/or allophanate groups in the presence of a catalyst, wherein the conversion step is carried in a reactor for which the specific heat exchange coefficient is greater than or equal to about 200 kW/m3/° C.
Dependencies are inferred from the claim text.