Abrasion resistance radiation curable coating

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks


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20415923, 427 541, 428411, 428412, 428441, 428442, 428461, 428463, 428507, 428510, 428513, 428514, 428516, 428500, 428522, 428523, 428520, G02C 702, B32B 2730




The invention relates to a radiation curable coating which provides superior abrasion and chemical resistance and excellent adhesion properties. The coating is produced by radiation curing. A first monomer selected from the group consisting of triacrylates and tetracrylate mixed with a second monomer having an N-vinyl imido group, preferably an N-vinyl lactam, such as vinyl pyrrolidone or vinyl caprolactam. The monomer mixture is substantially oligomer-free and if the radiation is ultraviolet light, a photoinitiator, preferably p-phenoxydichloro acetophenone or dimethoxyphenyl acetophenone, is included in the mixture.

patent: 3922440 (1975-11-01), Wegworth
patent: 3968305 (1976-07-01), Oshima
patent: 4013825 (1977-03-01), Denzinger
patent: 4026826 (1977-05-01), Yoshida
patent: 4135007 (1979-01-01), Lorenz
patent: 4158647 (1979-06-01), Azorlosa
patent: 4190681 (1980-02-01), Hall
patent: 4195103 (1980-03-01), Chang
patent: 4199421 (1980-04-01), Kamada
patent: 4205139 (1980-05-01), Barzynski


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