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7608384 |
Two-photon fluorescent ternary optical data storage
Ternary optical data storage method and apparatus for Write Once Read Many Times (WORM) optical data storage with two-photon fluorescent writing and readout. The data storage capacity is limited by...
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7425358 |
Copolycarbonates having improved flowability
An optical data storage comprising a thermoplastic copolycarbonate is disclosed. The copolycarbonate contains at least one unit derived from dihydroxydiphenyl ether and at least one unit derived...
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7351461 |
Articles comprising benzopyran colorants, method of manufacture, and method of use
An article comprising the compound of Formula (I)
wherein X is hydrogen or a radical of Formula (II), R 1 independently at each occurrence is a C 1 -C 20 aliphatic radical, a C 3 -C 10 ...
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7300742 |
Data storage medium and method for the preparation thereof
A data storage medium includes a substrate, a reflective metal layer, and a haze-prevention layer between the substrate and the reflective metal layer. The substrate includes an amorphous...
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7202292 |
Colored polymeric resin composition with 1,8-diaminoanthraquinone derivative, article made therefrom, and method for making the same
In one embodiment, a colored polymeric resin composition, comprises: a polymeric resin; and a 1,8-diaminoanthraquinone derivative having a purity of greater than or equal to about 90 wt % and...
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7179551 |
Poly(arylene ether) data storage media
A storage media comprises: a substrate comprising a plastic resin portion, wherein to plastic resin portion comprises poly(arylene ether) and a styrene material selected from the group consisting...
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7169615 |
Method of authenticating polymers, authenticatable polymers, methods of making authenticatable polymers and authenticatable articles, and articles made there from
Disclosed is a method of authenticating that a test polymer is an authenticatable polymer, wherein the authenticatable polymer has an authentication signal and comprises a substrate polymer and an...
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7132149 |
Data storage medium and method for the preparation thereof
A data storage medium includes a haze-prevention layer between a heat-resistant thermoplastic substrate and a reflective metal layer. The haze-prevention layer includes a metal having a tensile...
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7128959 |
Reflective article and method for the preparation thereof
A reflective article useful, for example, in automotive headlights includes a haze-prevention layer between a heat-resistant thermoplastic substrate and a reflective metal layer. The...
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7067609 |
Polycarbonate resin for optical disk substrate and optical disk substrate
The present invention relates to a polycarbonate resin that has a viscosity average molecular weight of from 10,000 to 17,000 and has characteristic features in an iron content, a free total phenol...
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6949279 |
Data storage media containing transparent polycarbonate blends
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...
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6944115 |
Colored data storage media
The colored data storage media comprises a substrate comprising colorant and plastic, wherein the substrate has a transmissivity of about 85% or less, at a readback laser wavelength, when...
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6899939 |
Polymer mixtures
A thermoplastic molding composition especially suitable for preparing optical data carriers is disclosed. The composition contains polycarbonate resin, at least one mold release agent and at least...
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6887573 |
Polycarbonate polyester articles with enhanced adhesion between outer layer and base substrate
An clear coated article formed from a transparent/translucent molding composition comprising a uniform miscible resin blend of a polycarbonate resin and a cycloaliphatic polyester resin, said...
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6875491 |
Polycarbonate composition, write once read many optical disc substrate and write once read many optical disc using same and process for production of write once read many optical disc
A polycarbonate composition excellent in both antistatic property and coloring matter coatability containing (a) a polycarbonate obtained by an ester exchange process, and (b) a compound having a...
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6858298 |
Optical polycarbonate resin molding material
An optical polycarbonate resin molding material comprising pellets formed from a polycarbonate resin, wherein the pellets satisfy the following properties (1) and (2):
(1) an average of surface...
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6811851 |
Process for producing ridgy resin film and recording medium
A ridgy resin film made of a resin is formed. On a flat substrate, a first concave and a second concave are formed such as to be spaced a given distance apart from each other. Then, a resin liquid...
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6811850 |
Optical information medium and its fabrication process
An optical information medium comprises a supporting substrate 20 , an information recording surface 4 on the supporting substrate 20 and a light-transmitting layer 2 on the information...
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6723936 |
Active energy ray-curing adhesive composition and keypad for a push-button switch
An active energy ray-curing adhesive composition is provided that has high curing rate as well as excellent adhesion and bonding workability, and a keypad ( 11 ) for push-button switches that has...
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6716510 |
Polycarbonate resin for optical disk substrate and optical disk substrate
The present invention relates to a polycarbonate resin that has a viscosity average molecular weight of from 10,000 to 17,000 and has characteristic features in an iron content, a free total phenol...
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6710154 |
Polycarbonate substrates
A method for producing polycarbonate based on 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethyl cyclohexanone and 4,4-(metaphenylene diisopropyl) diphenol is disclosed. The method is characterized in that...
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6706847 |
Copolycarbonate compositions, and related articles and processes
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...
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6599385 |
Manufacturing method of a multi-layer optical information recording carrier
A manufacturing method of a multi-layer optical information record carrier, which has a plurality of layers of reflecting surfaces with pits for recording information. According to the method, a...
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6596368 |
Organic substrate having optical layers deposited by magnetron sputtering and method for preparing it
An organic substrate having optically-active layers deposited by magnetron sputtering and a preparation process for it are provided. Gas pressure used for carrying out better adhesion by sputtering...
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6582884 |
Coated optical disks
Optical disks comprise a substrate, a metallized layer and a coating formed from a radiation-curable composition. The radiation-curable composition comprises a first component selected from the...
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6562433 |
Method for the preparation of polycarbonate with reduced levels of fries
The present invention provides a composition comprising polycarbonate wherein the polycarbonate has a very low Fries content (e.g., above 5 ppm and below 360 ppm). The present invention also...
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6537636 |
Data storage media containing clear polycarbonate blends
Polymer blends suitable for use in optical article. The polymer blends comprise a first and second polycarbonate and have properties particularly suited for use in high density optical data storage...
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6515098 |
Vibration damping monolithic polymers
The damping performance of an article and a polycarbonate composition is improved and a storage medium for data is provided with a glass transition temperature greater than about 150° C.
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6440518 |
Coating for optical information disks
A transparent coating is used on an optical information disk. The optical information disk is an injection-molded piece of clear poly-carbonate plastic and is impressed with microscopic bumps which...
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6440519 |
Photocurable adhesive for optical disk
A photocurable resin composition which comprises (A) a urethane (meth)acrylate oligomer obtained by the reaction of (a) at least one polyol compound preferably selected from the group consisting of...
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6416838 |
Compositions and articles made therefrom
The present invention relates to a composition comprising a first monomer having the formula CH 2 ═CHCOOR 1 , where R 1 is a linear alkyl group having from 9 to 16 carbon atoms or a branched...
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6395364 |
Data storage media containing clear polycarbonate terpolymer
The invention relates to terpolymers particularly suited for use in high density optical data storage media. The terpolymers are suitable for use in DVD recordable and rewritable media. The...
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6391418 |
Substrate for information recording media
The present invention relates to a substrate for information recording media, which comprises aromatic polycarbonate resin composition comprising: 100 parts by weight of an aromatic polycarbonate...
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6333113 |
Thermoplastic resin composition and sheets and cards made from the same
Cards which contain any one of the following thermoplastic resin compositions I to III in its material can be used as magnetic cards, IC cards, etc. since they are excellent in heat resistance,...
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6319580 |
Recording disk and producing method therefor
A recording disk comprises a substrate including a plastic material, and an overlay arranged over the substrate and including a recording substance for recording therein an information, and a...
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6309496 |
Method and apparatus for making dual layer DVD discs
An improved method and apparatus for making a dual-layer DVD disc that does not require a stamping step (typically, as part of the 2P prior art manufacturing process) during its manufacture. As...
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6296916 |
Photopolymerizable composition and optical disk having cured coating thereof
A photopolymerizable composition comprising (A) 100 parts by weight of a mixture of (meth)acrylic acid ester monomers, (B) from 0.1 to 5 parts by weight of a surfactant having a...
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6294239 |
Ultraviolet-curable adhesive composition
An ultraviolet-curable adhesive composition comprising a photopolymerization initiator whose molar absorption coefficient at a wavelength of 360-450 nm is at least 400 and an ultraviolet-curable...
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6287661 |
Label for optical disks and optical disk adhered with the label
The present invention provides a label for optical disks which comprises a base sheet having a coefficient of linear expansion of 1.0×10 -5 to 12.0×10 -5 and a thermal shrinkage ratio of 3 or...
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6287662 |
Optical data recording medium
An optical data recording medium in which the shape of the dye spectrum of a dye film having a thin film thickness per unit absorbance is controlled so as to enable improvements in the recording...
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6228440 |
Perishable media information storage mechanism and method of fabrication
A perishable media information storage mechanism, including a substrate, a data layer for recording data thereon the information storage mechanism, a reflective layer, and a protective lacquer...
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6221556 |
Article for optical data storage device
Disclosed is an article for the optical storage of data having low birefringence prepared from a mixture of a polycarbonate and a cycloaliphatic polyester. The article may optionally have...
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6183830 |
Digital video disk substrate
A digital video disk substrate of a polycarbonate having a viscosity average molecular weight (Mv) of 10,000 to 17,000 and a weight average molecular weight (Mw)/number average molecular weight...
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6162519 |
Optical disc and process for the production of the same, and process for the production of sheet material
To provide an optical disk with high mass producibility and excellent optical properties, mechanical precision, and mechanical strength, as well as a method for the simple and efficient...
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6117511 |
Optical recording media
An optical data recording medium utilizing reversible inter-crystalline-amorphous phase changes for recording, reproducing and erasing data as phase changes of a recording film caused by laser beam...
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6117284 |
Dual-layer DVD disc, and method and apparatus for making same
A dual-layer DVD disc that does not require a stamping step (typically, as part of the 2P prior art manufacturing process) during its manufacture. A polycarbonate substrate is molded and coated...
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6083598 |
Information recording medium, method for manufacturing the medium, and apparatus for manufacturing the medium
In an optical disk obtained by pasting two substrates, air bubbles and the like are removed from an adhesive layer between the substrates pasted together, and the thickness irregularity of the...
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6077583 |
Digital information guard
A transparent protective cover for the play side of an optical disc is made of poly-carbon film. The protective cover is annular in shape and is appropriately sized to fit the various disc formats....
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6077585 |
Optical recording medium and method of preparing same
An optical recording medium having at least one aluminum nitride and silicon nitride composite dielectric layer is provided. The amount of aluminum nitride in the dielectric layer, x, is more than...
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6066398 |
Polycarbonate moulding material for optical discs
The present invention relates to a polycarbonate molding material for optical discs, comprising pellets which comprises a polycarbonate with a viscosity-average molecular weight of 10,000 to...
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