Oh-terminated, uretdione-functional polyisocyanates, a...

Details Oh-terminated, uretdione-functional polyisocyanates, a... Oh-terminated, uretdione-functional polyisocyanates, a...

C - Chemistry, Metallurgy

08

G

C08G 18/79 (2006.01) C08G 18/12 (2006.01) C08G 18/42 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2213056

Hydroxyl- and uretdione-functional polyisocyanates essentially comprising A) from 55 to 86% by weight of uretdione B) from 1.5 to 15% by weight of polyol with ~ 3 hydroxyl groups and C) from 7.0 to 30% by weight of diol the polyisocyanates carrying terminal hydroxyl groups and having a functionality of > 2 to < 3, molar masses of between 1600 and 15,000, and a free isocyanate content of < 0.5% by weight.

Polyisocyanates à fonctions hydroxyle et uretdione comprenant essentiellement A) de 55 à 86 % en poids d'uretdione B) de 1,5 à 15 % en poids de polyol portant ~ 3 groupes hydroxyle et C) de 7,0 à 30 % en poids de diol, les polyisocyanates portant des groupes hydroxyle terminaux et ayant une fonctionnalité de > 2 à < 3, des masses molaires variant entre 1 600 et 15 000, et une teneur en isocyanate libre < 0,5 % en poids.

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