Process for the preparation of isocyanates through the...

Details Process for the preparation of isocyanates through the... Process for the preparation of isocyanates through the...

C - Chemistry, Metallurgy

07

C

260/386, 260/455

C07C 69/00 (2006.01) C07B 43/10 (2006.01)

Patent

CA 1215379

PROCESS FOR THE PREPARATION OF ISOCYANATES THROUGH THE THERMAL CLEAVAGE OF URETHANES Abstract of the Disclosure A process for the pyrolysis of mono-, di-, and polyurethanes to the corresponding mono-, di-, and polyiso- cyanates wherein the urethane to be cleaved is heated under pressure and sprayed through a nozzle into a pyrolysis chamber maintained at reduced pressure. The isocyanate and alcohol cleavage products are separated by fractional condensation.

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