Low temperature cure mdi prepolymers

Details Low temperature cure mdi prepolymers Low temperature cure mdi prepolymers

C - Chemistry, Metallurgy

08

G

C08G 18/32 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/76 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2404054

Prepolymer and coating compositions which moisture cure in less than about 24 hours. The prepolymers have a functionality of about 1.6 to about 2.4. Reaction systems for forming the prepolymer and coating compositions include polyol, isocyanate, and at least di-functional, aliphatic tertiary amine which has one or more EO groups on the nitrogen atom of the amine.

La présente invention concerne des compositions prépolymères et de revêtement qui durcissent à l'humidité en moins d'environ 24 heures. Les prépolymères ont une fonctionnalité allant d'environ 1,6 à environ 2,4. Des systèmes réactionnels servant à former les compositions prépolymères et de revêtement comprennent le polyol, l'isocyanate, et au moins une amine tertiaire aliphatique bifonctionnelle qui présente un ou plusieurs groupes EO sur son atome d'azote respectif.

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