Laminated transparent plastic material and polymerizable...

Details Laminated transparent plastic material and polymerizable... Laminated transparent plastic material and polymerizable...

C - Chemistry, Metallurgy

07

C

C07C 271/12 (2006.01) B32B 27/06 (2006.01) B32B 27/08 (2006.01) C03C 8/00 (2006.01) C08F 212/34 (2006.01)

Patent

CA 2086602

-249- ABSTRACT OF THE DISCLOSURE A laminated transparent plastic material comprises a transparent resin material having a total visible light transmittance of at least 85 % and a high hardness trans- parent resin layer of at least 0.2 mm thick having a pencil hardness of at least 4H, Rockwell M scale hardness of at least 100, and a total visible light transmittance of at least 85 % overlying the surface of the transparent resin material, the laminated transparent plastic material hav- ing a bending modulus of elasticity of at least 350 kgf/mm2. A polymerizable monomer has the formula, Image where R5 and R6 are similar or dissimilar and are selected from group consisting of hydrogen and methyl, k is an integer of 2 - 10, and the isopropenyl substituent on the aromatic ring is in the p-position or m-position.

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