Abstract: The present invention provides a reactive adhesive formulation for use in a limited play data storage medium, the reactive adhesive formulation including at least one adhesive material, at least one reactive material disposed within the at least one adhesive material and at least one photo-bleaching retarder material disposed within the at least one adhesive material. The at least one photo-bleaching retarder material includes resorcinol, 4-hexylresorcinol and/or polyhydroxystyrene.

Abstract: Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4?-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.

Abstract: A limited play optical storage medium for data is provided in the present invention. The limited play optical storage medium for data comprises a first substrate; a reflective layer; a data layer disposed between said substrate and said reflective layer; a reactive layer comprising at least one carrier; and at least one reactive material; and an optically transparent second substrate with an oxygen permeability in a range between about 0.01 Barrers and about 1.35 Barrers at 25° C. wherein the second substrate is between the reactive layer and a laser incident surface.

Abstract: The present disclosure relates to a limited play optical storage media and a method for limiting access to data thereon. This storage media includes a first substrate; a reflective layer; a data storage layer disposed between said first substrate and said reflective layer; a reactive layer comprising at least one reactive material disposed on said at least one reflective layer; an optically transparent second substrate disposed between the reactive layer and a laser incident surface of the optical storage media; and an oxygen permeable barrier layer disposed between the reactive layer and a laser incident surface of the optical storage media, said reactive layer having an initial percent reflectivity of about 50% or greater and a percent reflectivity of about 45% or less after exposure to oxygen.

Abstract: A method of accelerated discovery of compositions that meet predetermined different requirements comprises: selecting a predetermined number of different dyes, electron donors and matrix forming materials; preparing a plurality of mixtures containing selected dyes, electron donors and matrix forming materials wherein each of the mixtures contains a different combination of dyes, electron donors and matrix forming materials; preparing an array of compositions by dissolving the mixtures in a solvent and applying the mixtures dissolved in the solvent onto one or more substrates; testing each of the compositions in the array for response to irradiation; compiling results of the testing into a data set; and classifying the data set with respect to a plurality of predetermined characteristics to form a classified data set.

Abstract: The present disclosure relates to a limited play optical storage media and a method for limiting access to data thereon. This storage media comprises: an optically transparent substrate; a reflective layer; an oxygen penetrable UV coating disposed on a side of the substrate opposite the reflective layer; and a reactive layer disposed between the UV coating and the substrate, the optical storage media having an initial percent reflectivity of about 50% or greater and a subsequent percent reflectivity of about 45% or less.

Abstract: A method for imparting tags to an optical article comprising modifying predetermined locations on the surface of the optical article to change the surface energy of the predetermined locations, applying the tags to the whole surface of the optical article in a uniform film, and retaining the tag in the modified predetermined locations while the tag is removed from unmodified regions. The method further comprising subjecting the optical article to a spinning motion that produces centrifugal forces and retaining the tags in modified predetermined location while the tags are removed from unmodified regions by the centrifugal forces.

Abstract: The present disclosure relates to a limited play optical storage media and a method for limiting access to data thereon. This storage media comprises: an optically transparent substrate; a reflective layer; a data storage layer disposed between said substrate and said reflective layer; an oxygen penetrable UV coating disposed on a side of said substrate opposite said data storage layer; and a reactive layer disposed between said UV coating and said substrate, wherein said optical storage media has an initial percent reflectivity of about 50% or greater and a subsequent percent reflectivity of about 45% or less.

Abstract: A storage medium capable of being read by player, the storage medium comprising: digital content disposed along one or more tracks of the storage medium; and an authentication program disposed along the one or more tracks of the storage medium for authenticating the storage medium by determining whether the one or more vague bits exist at the one or more predetermined locations. There are also provided a method for authenticating a storage medium and a method for creating a storage medium having the one or more vague bits.

Abstract: A thermoplastic composition is described, based on a copolycarbonate which includes at least two structural units. Structure I is usually a conventional carbonate based on bisphenol A, while structure II is a bisphenol carbonate which includes branched or linear groups extending from a bridging carbon atom or carbon group which connects two aromatic rings. The compositions exhibit very good melt flow, along with enhanced shear-thinning behavior. These characteristics are important for optical disc applications. Thus, related articles are described, along with processes for preparing such articles.

Abstract: A limited play optical storage medium for data is provided in the present invention. The limited play optical storage medium for data comprises a first substrate; a reflective layer; a data layer disposed between said substrate and said reflective layer; a reactive layer comprising at least one carrier; and at least one reactive material; and an optically transparent second substrate with an oxygen permeability in a range between about 0.01 Barrers and about 1.35 Barrers at 25° C. wherein the second substrate is between the reactive layer and a laser incident surface.

Abstract: The invention relates to transparent blends of polymers suitable for use in optical articles; the polymers contain residues of BCC and its derivatives, and have properties particularly suited for use in high density optical data storage media. The polymers further contain residues of other polymers, such as &agr;-methyl polystyrene and polystyrene derivatives; bisphenols, such as bisphenol A; cycloaliphatic polyester resins, such as PCCD and its derivatives or some combination of each.

Abstract: A coating formulation is provided which comprises at least one polyhydroxy compound; at least one carrier; and at least one reactive material.

Abstract: The invention relates to transparent blends of polymers suitable for use in optical articles; the polymers contain residues of BCC and its derivatives, and have properties particularly suited for use in high density optical data storage media. The polymers further contain residues of other polymers, such as &agr;-methyl polystyrene and polystyrene derivatives; bisphenols, such as bisphenol A; cycloaliphatic polyester resins, such as PCCD and its derivatives or some combination of each.

Abstract: The invention relates to transparent blends of polymers suitable for use in optical articles; the polymers contain residues of BCC and its derivatives, and have properties particularly suited for use in high density optical data storage media. The polymers further contain residues of other polymers, such as &agr;-methyl polystyrene and polystyrene derivatives; bisphenols, such as bisphenol A; cycloaliphatic polyester resins, such as PCCD and its derivatives or some combination of each.

Abstract: The invention relates to transparent blends of polymers suitable for use in optical articles; the polymers contain residues of BCC and its derivatives, and have properties particularly suited for use in high density optical data storage media. The polymers further contain residues of other polymers, such as &agr;-methyl polystyrene and polystyrene derivatives; bisphenols, such as bisphenol A; cycloaliphatic polyester resins, such as PCCD and its derivatives or some combination of each.

Abstract: A method for making limited play optical storage medium for data is provided Said method comprises providing a first substrate and a second substrate; disposing a reactive layer; disposing a reflective layer; and adhering said first substrate to said second substrate such that the layers are disposed between said first substrate and said second substrate. Variations on the arrangement of the layers are provided in the present invention.

Abstract: A limited play optical storage medium for data is provided that comprises a first optically transparent substrate; a reflective layer; a data layer disposed between said first substrate and said reflective layer; a second substrate; and a reactive layer comprising a carrier and a reactive material wherein the reactive layer and reflective layer are disposed between said first substrate and said second substrate.

Abstract: A limited play optical storage medium for data is provided which comprises a first optically transparent substrate; a reflective layer; a data layer disposed between said substrate and said reflective layer; a reactive layer that optionally comprises a polyhydroxy compound, at least one carrier, and at least one reactive material; and a second substrate wherein the second substrate is optionally a light-absorbing layer with the proviso that the storage medium includes a reactive layer with a polyhydroxy compound, a light-absorbing layer, or a combination thereof.

Abstract: A thermoplastic composition is described, based on a copolycarbonate which includes at least two structural units. Structure I is usually a conventional carbonate based on bisphenol A, while structure II is a bisphenol carbonate which includes branched or linear groups extending from a bridging carbon atom or carbon group which connects two aromatic rings. The compositions exhibit very good melt flow, along with enhanced shear-thinning behavior. These characteristics are important for optical disc applications. Thus, related articles are described along with processes for preparing such articles.