Process for the preparation of alkyl isocyanates

Details Process for the preparation of alkyl isocyanates Process for the preparation of alkyl isocyanates

C - Chemistry, Metallurgy

07

C

C07C 263/00 (2006.01) C07C 263/04 (2006.01) C07C 265/00 (2006.01)

Patent

CA 2096311

Multistep process for the preparation of alkyl mono and diisocyanates consisting in reacting the corresponding aliphatic amine or diamine with dimethylcarbonate and, substantially, in partially vaporizing and converting the urethane thus formed in an evaporator to subsequently terminate the cracking in a II° reactor, and finally subjecting the cracking product to fractional distillation at reduced pressure, recycling the unconverted part to the partial vaporization step.

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