Radiation-curable coating compositions that form...

C - Chemistry – Metallurgy – 08 – L

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400/7202

C08L 83/06 (2006.01) C09D 4/00 (2006.01)

Patent

CA 2008020

ABSTRACT Radiation-curable coating compositions which form transparent, abrasion-resistant, tintable coatings upon curing by exposure to high intensity irradiation, such as ultraviolet light or electron beam irradiation. The coating composition comprises a combination of effective amounts of (a) colloidal silica, (b) the hydrolysis product of a silane compound having a polyme- rizable functional group such as acryloxy-functional silane or glycidoxy-functional silanes or mixtures of both, (c) polyfunctional, polymerizable, non-acryloxy- functional ethers, (d) at least one radiation sensitive initiator and, preferably, (e) a monofunctional monomer. When the surface of a substrate coated with the cured coating composition is immersed in a colored dye bath for a sufficient period of time, the coating absorbs or transmits to the substrate a desired amount of dye.

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