Abrasion resistant radiation curable coating for polycarbonate

C - Chemistry – Metallurgy – 09 – D

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C09D 133/06 (2006.01) C08F 290/06 (2006.01) C08J 7/04 (2006.01) C09D 4/00 (2006.01) G02B 1/10 (2006.01)

Patent

CA 1338076

Polymerizable and cross-linkable, radiation curable coating compositions particularly designed for deposition as an abrasion resistant, tintable coating poly (bis phenyl A) carbonates. The formulation is a mixture including: a) 25-94% by weight of a polyfunctional acrylate or methacrylate monomer having at least three acrylate functional groups per molecule or a mixture of such monomers; b) 3-50% by weight of a monomer selected from N-vinyl derivatives of linear or cyclic secondary amides, tetrahydrofurfuryl acrylate or methacrylate, N,N-di(lower alkyl) acrylamide ethylenically unsaturated monosilane, or a mixture of such monomers; and c) 3-40% by weight of an ethylenically un- saturated monomer having a Tg less than 80°C or 3-30% of an ethylenically unsaturated copolymer with a Tg less than 100°C.

581534

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