Diisocyanates and a process for their preparation

Details Diisocyanates and a process for their preparation Diisocyanates and a process for their preparation

C - Chemistry, Metallurgy

07

F

260/315.05

C07F 7/10 (2006.01)

Patent

CA 1193269

NEW DIISOCYANATES AND A PROCESS FOR THEIR PREPARATION ABSTRACT OF THE DISCLOSURE Diisocyanates corresponding to the general formula Image wherein R denotes the residue of an aliphatic, cycloali- phatic or aromatic diisocyanate and R' denotes an alkyl group, and a process for the preparation of these diisocyanates by the reaction of a trialkylsilyl cyanide with at least 2 mol of an organic diisocyanate at -25°C to 200°C. The new compounds are suitable as intermediate products for the production of plant protective agents and in parti- cular they are valuable starting compounds for the production of polyurethanes.

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