Abrasion resistant radiation curable coating for polycarbonate article
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United States of America Patent
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Sep 4, 1990
Grant Date -
N/A
app pub date -
Nov 6, 1987
filing date -
Nov 6, 1987
priority date (Note) -
Expired
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Abstract
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 unsaturated monomer having a Tg less than 80.degree. C. or 3-30% of an ethylenically unsaturated copolymer with a Tg less than 100.degree. C.
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