Optical recording medium with antistatic hard coating
AssigneeMinnesota Mining and Manufacturing Company
InventorEdward J. Woo
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Abstract
The present invention concerns perfluoro-based antistatic compositions comprising 0.5 to 5.0 parts by weight of an ionic perfluoro surfactant and 0.5 to 5.0 parts by weight of a nonionic perfluoro surfactant in admixture with 100 parts by weight of nonfluorinated, copolymerizable, radiation curable prepolymers as well as antistatic hard coatings prepared from these compositions. The present invention also concerns optical recording media having such antistatic hard coatings provided on at least one surface.
Claims13
An optical recording disk having an abrasion resistant, transparent antistatic hard coat layer provided on at least one surface of the disk, wherein the hard coat layer is a cured composition obtained form ingredients comprising
- (a) 100 parts by weight of nonfluorinated, copolymerizable, radiation curable prepolymers;
- (b) from 0.5 to 5.0 parts by weight of a nonionic perfluoro surfactant;
- and
- (c) from 0.5 to 5.0 parts by weight of an ionic perfluoro surfactant.
Dependencies are inferred from the claim text.