Process for the preparation of polyisocyanates which contain...

C - Chemistry – Metallurgy – 08 – G

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260/455.3

C08G 18/80 (2006.01) C07C 273/18 (2006.01) C08G 18/78 (2006.01) C07C 275/62 (2006.01)

Patent

CA 1077956

Abstract of the Disclosure This invention relates to an improved process for the preparation of polyisocyanates which contain biuret groups by the direct reaction of polyamines in vapor form with polyisocyanates.

271671

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