Method for the production of polyisocyanates

Details Method for the production of polyisocyanates Method for the production of polyisocyanates

C - Chemistry, Metallurgy

08

G

C08G 18/76 (2006.01) C07C 263/10 (2006.01) C07C 263/20 (2006.01) C08G 18/02 (2006.01)

Patent

CA 2621331

Process for preparing polyisocyanates involving the removal of a solvent- stream enriched in volatile, aromatic, non-isocyanate-group-containing contaminants from the polyisocyanate production process.

L'invention porte sur un procédé de préparation de polyisocyanates consistant à extraire du processus de production du polyisocyanate un solvant enrichi en contaminante volatiles, aromatiques, et étrangers au groupe des isocyanates.

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