Stabilisation process of polyisocyanate organic solutions

C - Chemistry – Metallurgy – 07 – D

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260/496.1

C07D 251/34 (2006.01) C08G 18/70 (2006.01)

Patent

CA 1252479

PRECIS DE LA DIVULGATION: L'invention concerne un procédé de stabilisation de solutions de polyisocyanates dans des solvants organiques inertes, vis-à-vis de la formation de précipités, caracté- risé en ce qu'on leur ajoute une quantité efficace d'au moins un dérivé organostannique soluble dans le solvant organique. De façon inattendue, la présence d'un dérivé organostannique soluble dans la solution organique de poly- isocyanate inhibe la formation de précipités au cours du stockage.

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