Radiation curable compositions

Details Radiation curable compositions Radiation curable compositions

C - Chemistry, Metallurgy

08

L

402/133, 400/515

C08L 75/06 (2006.01) C08G 18/42 (2006.01) C08G 18/67 (2006.01)

Patent

CA 1127345

ABSTRACT OF THE DISCLOSURE Unsaturated addition-polymerizable urethane resins pre- pared from at least one polyisocyanate, at least one monomeric or polymeric polyol, and at least one unsaturated addition-polymeriz- able monomeric organic compound characterized by the presence of a single isocyanate-reactive active hydrogen group, wherein said polyol has a hydroxyl functionality of at least 2.1, and the amount of polyisocyanate is sufficient to provide an NCO:OH ratio, with respect to said polyol, of at least 2.1:1, are characterized by reduced viscosity, improved physical stability, and by improved solubility and compatibility in organic solvents/diluents. Particularly advantageous resins are obtained by employing iso- cyanate-functional prepolymers as precursors for such unsaturated addition-polymerizable urethane resins.

283688

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