Patent application number | Description | Published |
20080287640 | PROCESS FOR THE PRODUCTION OF POLYCARBONATE USING AN ESTER SUBSTITUTED DIARYL CARBONATE - A method of preparing polycarbonate includes a steps of providing a melt reaction mixture and allowing the melt reaction mixture to react to build molecular weight, thereby preparing the polycarbonate. The melt reaction mixture has a dihydroxy compound, an ester substituted diaryl carbonate mixture, and a melt transesterification catalyst where the ester substituted diaryl carbonate mixture may contain acid-substituted phenol. The method also includes the step of adjusting the molar ratio of acid-substituted phenol, if present, to melt transesterification catalyst (acid-substituted phenol/catalyst) in the melt reaction mixture to an amount of less than 10. | 11-20-2008 |
20100216058 | BLOCK TERPOLYMER WITH CONFINED CRYSTALLIZATION - A polyester block terpolymer comprising an amorphous block comprising a polystyrene dicarboxylate; a crystallizable block comprising a polyethylene glycol; and an aliphatic diol block; wherein the amorphous block is a continuous phase and the crystallizable block is a dispersed phase, and wherein the dispersed phase is less than about 200 nanometers in size. | 08-26-2010 |
20100216059 | POLYMER COMPOSITES WITH CONFINED CRYSTALLIZATION - A polymer composite prepared by melt blending, comprising an amorphous polymer; and a crystallizable polymer; wherein upon cooling the polymer composite, the amorphous polymer forms a continuous phase and the crystallizable polymer forms a dispersed phase, and wherein the dispersed phase is less than 200 nanometers in size. | 08-26-2010 |
20110051586 | OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE SAME - There are provided optical data storage media and methods of optical data storage using the same. The optical data storage media comprises a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to a reactant that undergoes change upon triplet excitation. The refractive index change (Δn) of the medium is at least about 0.005, or even at least about 0.05. | 03-03-2011 |
20110053054 | COMPOSITIONS, OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE OPTICAL DATA STORAGE MEDIA - There are provided compositions, optical data storage media and methods of using the optical data storage. The compositions comprise a non-linear sensitizer comprising one or more platinum ethynyl complexes capable of absorbing actinic radiation to cause upper triplet energy transfer to a reactant that undergoes a photochemical change upon triplet excitation. | 03-03-2011 |
20110053055 | COMPOSITIONS, OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE OPTICAL DATA STORAGE MEDIA - There are provided compositions, optical data storage media and methods of using the optical data storage media. The compositions comprise a non-linear sensitizer comprising one or more subphthalocyanine reverse saturable absorbers capable of absorbing actinic radiation to cause upper triplet energy transfer to a reactant that undergoes a photochemical change upon triplet excitation. | 03-03-2011 |
20110081602 | OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE SAME - An optical data storage medium is provided. The optical data storage medium includes a polymer matrix; a reactant capable of undergoing a change upon triplet excitation, thereby causing a refractive index change; and a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to said reactant. The refractive index change capacity of the medium is at least about 0.1. The reactant comprises polyvinyl chlorocinnamate, polyvinyl methoxycinnamate, or a combination thereof. | 04-07-2011 |
20110242729 | Monomers for preparing polycarbonate resins, methods of preparing the monomers, polycarbonate resins prepared with the monomers, and capacitors comprising the polycarbonate resins - A monomer and polycarbonate resin are provided, as are methods of making the monomer. The resin may be used to provide a thin film that has a higher dielectric constant and higher glass transition temperature, and similar breakdown strength and similar dissipation factor to films prepared from polycarbonate resins not so modified. The thin films, in turn, may advantageously be used to form, wholly or in part, articles such as capacitors, sensors, batteries, flexible printed circuit boards, keyboard membranes, motor/transformer insulations, cable wrappings, industrial tapes, interior coverage materials, and the like. In particular, a capacitor comprising the polycarbonate resin is also provided. | 10-06-2011 |
20120147724 | OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE SAME - An optical data storage medium is provided. The optical data storage medium includes a polymer matrix; a reactant capable of undergoing a change upon triplet excitation, thereby causing a refractive index change; and a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to said reactant. The refractive index change capacity of the medium is at least about 0.005. The non-linear sensitizer comprises a triarylmethane dye. | 06-14-2012 |
20120163145 | OPTICAL DATA STORAGE MEDIA - Optical data storage media for bit-wise recording of a microhologram using an incident radiation at a wavelength of about 405 nm are provided. The optical storage medium includes (a) a non-photopolymer polymer matrix; (b) a non-linear sensitizer comprising a phenylethynyl platinum complex, wherein the non-linear sensitizer is capable of triplet-triplet energy transfer from an upper triplet state (T | 06-28-2012 |
20120250120 | MULTI-WAVELENGTH- HOLOGRAPHIC SYSTEMS AND METHODS - A holographic system for recording and reading information is provided. The system includes at least one laser for providing a laser beam. The system also includes a subsystem configured for multi-wavelength operation of said holographic system and recording micro-holograms at different wavelengths in substantially non-overlapping volumes of a holographic medium. | 10-04-2012 |
20120328973 | METHOD OF RECORDING DATA IN AN OPTICAL DATA STORAGE MEDIUM AND AN OPTICAL DATA STORAGE MEDIUM - In accordance with one aspect of the present invention, a method for recording holographic data in an optical data storage medium is provided. The method includes (i) providing an optical data storage medium including: (a) a thermoplastic polymer matrix, (b) a latent acid generator, (c) a non-linear sensitizer, and (d) a reactant including a latent chromophore. The method further includes (ii) irradiating a volume element of the optical data storage medium with an interference pattern, said interference pattern including an incident radiation having a wavelength and an intensity sufficient to cause upper triplet energy transfer from the non-linear sensitizer to the latent acid generator, thereby generating an acid, wherein the latent acid generator is substantially non-responsive to said incident radiation. The method furthermore includes (iii) reacting at least one protected chromophore with the acid generated to form at least one chromophore, thereby causing a refractive index change within the volume element; and (iv) producing within the irradiated volume element refractive index variations corresponding to the interference pattern, thereby producing an optically readable datum. An optical data storage medium is also provided. | 12-27-2012 |
20130128712 | REACTANTS FOR OPTICAL DATA STORAGE MEDIA AND METHODS FOR USE - The present disclosure relates generally to optical data storage media, and more specifically, to holographic storage media. In one embodiment, an optical storage medium includes a polymer matrix having one or more polymer chains. The optical storage medium also includes a reverse saturable absorption (RSA) sensitizer disposed within the polymer matrix that is configured to become excited upon exposure to light having an intensity above an intensity threshold and configured to transfer energy to a reactant. The optical storage medium also includes a diphenyl cyclopropene (DPCP)-derivative reactant disposed within the polymer matrix and capable of undergoing a modification upon receiving an energy transfer from the excited sensitizer that changes a refractive index of the optical medium. | 05-23-2013 |
20130128713 | REVERSE SATURABLE ABSORBTION SENSITIZERS FOR OPTICAL DATA STORAGE MEDIA AND METHODS FOR USE - The invention relates generally to optical data storage media, and more specifically, to holographic storage media. In one embodiment, an optical storage medium composition includes a polymer matrix. Disposed within the polymer matrix is a reactant capable of undergoing a modification that alters the refractive index of the composition upon receiving an energy transfer from an excited sensitizer. A non-linear sensitizer is also disposed within the polymer matrix, and the sensitizer includes a metal-substituted subphthalocyanine (M-sub-PC) reverse saturable absorber configured to become excited upon exposure to light beyond an intensity threshold at approximately 405 nm and configured to transfer energy to the reactant. | 05-23-2013 |
20130164531 | High-Density Fluorescent Dye Clusters - The present invention relates to modular sterically enhanced emission dye (SEED) clusters, wherein multiple SEED molecules are appended to a single polymeric chain. | 06-27-2013 |
20150020685 | HOLLOW FIBER MEMBRANES AND METHODS FOR FORMING SAME - The invention provides improved hollow fiber membranes having at least two layers, and methods for forming the same. The methods include co-extruding a first composition, a second composition, and a third composition to form a dual layer hollow fiber membrane. The first composition includes a glassy polymer; the second composition includes a polysiloxane; and the third composition includes a bore fluid. The dual layer hollow fiber membranes include a first layer and a second layer, the first layer being a porous layer which includes the glassy polymer of the first composition, and the second layer being a polysiloxane layer which includes the polysiloxane of the second composition. | 01-22-2015 |
20150053608 | POLYARYLNITRILE COPOLYMER MEMBRANES - A membrane including a polyarylnitrile copolymer is presented. The polyarylnitrile copolymer includes structural units having a formula (I) and at least one terminal group having a formula (II): | 02-26-2015 |