Radiation-curable powder coating compositions and their use

Details Radiation-curable powder coating compositions and their use Radiation-curable powder coating compositions and their use

C - Chemistry, Metallurgy

09

D

C09D 183/04 (2006.01) C09D 183/06 (2006.01) C08K 5/549 (2006.01)

Patent

CA 2474426

Disclosed is a powder coating composition curable with actinic radiation, which comprises: I. a binder compound crosslinkable with actinic radiation, and II. a compound having a polyhedral oligomeric silicon-oxygen cluster of the formula: [(R a X b SiO1.5)m(R c X d SiO)n(R e X f Si2O2.5)o(R g X h Si2O2)p] wherein a, b, c = 0-1; d = 1-2; e, f, g = 0-3; h = 1-4; m + n + o + p >= 4; a + b = 1; c + d = 2; e + f = 3 and g + h = 4; R is hydrogen, hydrocarbon group or the like and X is oxy, hydroxy, alkoxy or the like. A coating film made by curing the composition has a high glass transition temperature (Tg) and enhanced hydrophobicity.

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