Integrated process for the preparation of aromatic...

C - Chemistry – Metallurgy – 07 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07C 263/04 (2006.01) C07C 265/12 (2006.01)

Patent

CA 2434231

Integrated process for the preparation of aromatic isocyanates comprising: the reaction between an aromatic amine and an organiccarbonate in the presence of a catalyst selected from organic and inorganic salts of a metal selected from Zn, Sn, Pb, Cu; the removal of the catalyst; the passivation of the quantity of residual metal in the urethane formed in step a); the removal of t he organic solvent and its optional recycling to step a) of the reaction; the evaporation of the aromatic urethane with partial pyrolysis; the complete pyrolysis of the urethane in gas phase; the recovery of the isocyanate.

Un procédé intégré de préparation d'isocyanates aromatiques comprend: la réaction entre une amine aromatique et un carbonate organique en présence d'un catalyseur sélectionné entre des sels organiques et inorganiques d'un métal sélectionné entre Zn, Sn, Pb, Cu; la suppression du catalyseur; la passivation de la quantité de métal résiduel présent dans l'uréthane formé dans l'étape a); l'élimination du solvant organique et son recyclage éventuel dans l'étape a) de la réaction ; l'évaporation de l'uréthane aromatique avec une pyrolyse partielle ; la pyrolyse complète de l'uréthane en phase gazeuse ; la récupération de l'isocyanate.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Integrated process for the preparation of aromatic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated process for the preparation of aromatic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated process for the preparation of aromatic... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1365465

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.