Stable liquid biuret modified and biuret allophanate...

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 275/62 (2006.01) C07C 273/18 (2006.01) C07C 275/60 (2006.01) C08G 18/48 (2006.01) C08G 18/76 (2006.01) C08G 18/78 (2006.01)

Patent

CA 2474313

This invention relates to stable liquid modified diphenylmethane diisocyanates which comprise a secondary amine based biuret modified diphenylmethane diisocyanate having an NCO group content of about 12 to about 30% by weight. The present invention also relates to stable liquid biuret allophanate modified MDIs, to stable liquid prepolymers of biuret modified MDIs, to stable liquid prepolymers of biuret allophanate modified MDIs, and to processes for the preparation of these compositions.

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