Diisocyanates and diisocyanate mixtures based on...

C - Chemistry – Metallurgy – 08 – G

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402/131, 402/160

C08G 18/76 (2006.01) C07C 205/06 (2006.01)

Patent

CA 1146957

ABSTRACT OF THE DISCLOSURE The instant invention is directed to diiso- cyanates based on diphenylmethane which may be methyl- substituted and which are characterized in particular by isocyanate groups in the 3,4'- and optionally in the 2,2'-position. The instant invention is also directed to a number of independent processes for their production and to their use as isocyanate component in the production of polyurethanes.

357631

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