Isocyanates

Details Isocyanates Isocyanates

C - Chemistry, Metallurgy

07

D

402/159, 117/195

C07D 233/70 (2006.01) C07D 233/88 (2006.01) C07D 235/02 (2006.01) C07D 239/22 (2006.01) C07D 263/38 (2006.01) C07D 263/48 (2006.01) C07D 263/52 (2006.01) C07D 265/06 (2006.01) C08G 18/78 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1077935

Abstract of the Disclosure The present invention relates to a new organic heterocyclic isocyanate which is the reaction product of an organic diisocyanate and an amino or hydroxy nitrile. The invention also relates to a process of producing such isocyanates by reacting an excess of the diisocyanate with the nitrile under conditions under which the nitrile will not decompose and then maintaining the reaction mix- ture at an elevated temperature until the isocyanate nitrile adduct cyclizes. The reaction may be carried out in the presence of a catalyst for isocyanate addition reactions. Additionally, the invention relates to a process for the production of polyurethane by the reaction of the hetero- cyclic isocyanates with compounds carrying at least two isocyanate reactive hydrogen atoms per molecule.

245464

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