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| Number | Title | Issue Date |
| 8173762 | Process for the preparation of polycarbonate A combined process for the preparation of polycarbonate from bisphenols and diaryl carbonates, the monophenol liberated being reacted again for the preparation of the diaryl carbonate and the alkali metal halide forming in the preparation of the diaryl carbonate bei... | 05/08/2012 |
| 8173761 | Polycarbonate nanocomposites Nanocomposites comprising a sulfonated telechelic polycarbonate and an organically modified clay are disclosed. The polycarbonate nanocomposites have improved physical and mechanical properties. ... | 05/08/2012 |
| 8158745 | Polycarbonates having rearrangement structures, cyclic and linear oligomers and also flow behavior The present invention relates to compositions having improved rheological properties which are based on polycarbonate having rearrangement structures and cyclic and linear oligomers and also moldings and extrudates composed of these polycarbonate compositions. ... | 04/17/2012 |
| 8129494 | Resin composition for printing plate Disclosed is a polymer having excellent solvent resistance which can be produced by using a polycarbonate diol having a repeating unit represented by the formula (1) and/or (2), having a hydroxyl group at both termini, and having a number average molecular weight of... | 03/06/2012 |
| 8114952 | Polycarbonate-polyester blends, methods of manufacture, and articles thereof A composition comprises a blend of 50 to 90 wt. % of a polycarbonate copolymer, 10 to 50 wt. % of a polyester wherein the weight percent of the polycarbonate copolymer and the polyester are each based on the total weight of the polycarbonate copolymer and the polyes... | 02/14/2012 |
| 8084570 | Polycarbonate for making extruded films that are virtually free of surface defects Linear polycarbonate resin virtually free of surface defects that impair the suitability of the resin for demanding optical application is disclosed. Also disclosed is a process for the manufacture of the resin. The surface defects included in the resin are in the f... | 12/27/2011 |
| 8080627 | Polycarbonate resin, process for producing the same and electrophotographic photoreceptor using the same The present invention provides an electrophotographic photoreceptor having excellent lubricity and abrasion resistance by using a novel polycarbonate resin comprising structural units having a polysiloxane chain in the shape of grafts as represented by the following... | 12/20/2011 |
| 8080628 | Polycarbonate resin and electrophotographic photosensitive body using the same An electrophotographic photosensitive body which has both good image stability and wear resistance under high temperature and high humidity conditions can be obtained by using a novel polycarbonate resin, which contains a structural unit represented by the general f... | 12/20/2011 |
| 8058384 | Method for producing thermoplastic resin, polyester resin and polycarbonate resin, and their applications The invention relates to a method for producing a thermoplastic resin, comprising using a composition at least comprising a fluorene-containing dihydroxy compound represented by the following formula (1) and a fluorene-containing hydroxy compound represented by the ... | 11/15/2011 |
| 8039575 | Flame-retardant polycarbonate resin composition, polycarbonate resin molded article, and method for producing the polycarbonate resin molded article Provided are a polycarbonate resin composition containing a glass filler, which is excellent in transparency, strength, and heat resistance and provided with high flame retardancy even without using a flame retardant, and a polycarbonate resin molded article obtaine... | 10/18/2011 |
| 8026336 | Polycarbonate resin composition and method of producing the same The present invention relates to a polycarbonate resin composition which comprises a polycarbonate resin having the repeating unit that is represented by the following general formula (1) and a hydroxyl group at terminal thereof and has the concentration of the term... | 09/27/2011 |
| 8013105 | Flame-retardant polycarbonate resin composition, polycarbonate resin molded article, and method for producing the polycarbonate resin molded article Provided are a polycarbonate resin composition containing a glass filler, which is excellent in transparency, strength, and heat resistance and provided with high flame retardancy, and a polycarbonate resin molded article obtained by molding the resin composition. T... | 09/06/2011 |
| 7999056 | Continuous production method and production apparatus of aromatic polycarbonate The object of the present invention is to provide a method of producing plural kinds of aromatic polycarbonates by a melt process without changeover loss and quality deterioration. The present invention relates to a production method of an aromatic polycarbonate, co... | 08/16/2011 |
| 7985824 | Method of making polycarbonate A method of making a polycarbonate is described. The method comprises reacting an activated diaryl carbonate and a dihydroxy compound at a reaction temperature in a reactor to form a reaction mixture wherein the reactor comprises a heated cover and an open space bet... | 07/26/2011 |
| 7985823 | Production method of polycarbonate resin The invention aims at providing a process for the production of polycarbonate resin which is suppressed in discoloration and reduced in the content of crystalline foreign substance, gel, and so on. The invention relates to a process for the production of polycarbona... | 07/26/2011 |
| 7977447 | Method for making carbonates and esters A method for forming a monomeric carbonate includes the step of combining a monofunctional alcohol or a difunctional diol with an ester-substituted diaryl carbonate to form a reaction mixture. Similarly, a method for forming a monomeric ester includes the step of co... | 07/12/2011 |
| 7943722 | Fire-retardant polyarylate resin containing dihydroxyphenylacetylene and compositions thereof Provided is a flame-retardant polyarylate resin and a composition thereof, and more particularly, a polyarylate resin prepared by co-polymerizing 4,4′-dihydroxyphenylacetylene (DHPA), phthaloyl chloride (PC) and bishydroxyphenol (BHP) and a composition of the poly... | 05/17/2011 |
| 7939621 | Oligocarbonate molecular transporters A cyclic carbonate monomer, including: wherein R1, R2, and R3 are independently selected from the group consisting of H, linear or branched, substit... | 05/10/2011 |
| 7910685 | Hydrolytically degradable polymers and hydrogels made therefrom Conjugates between a protein and a water soluble polymer comprising multiple degradable carbonate linkages are provided. ... | 03/22/2011 |
| 7893185 | Polycarbonate copolymer, method for producing the same, molded body, optical material, and electrophotographic photosensitive body A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate copolymer, the content of biphenols having a structure represented by th... | 02/22/2011 |
| 7863403 | Process for the preparation of polycarbonates and diaryl carbonate The present invention relates to a process for the continuous preparation of polycarbonates or diaryl carbonates by the method of the phase boundary process, in which both the mixing of the organic and aqueous phase and the upstream oligomerization step or aryl chlo... | 01/04/2011 |
| 7858727 | Process for the preparation of polycarbonate The invention relates to a combined process for the preparation of polycarbonate by the phase boundary process and downstream electrolysis of sodium chloride-containing process wastewater. ... | 12/28/2010 |
| 7847051 | Phase boundary processes for preparing polycarbonates Continuous processes for preparing polycarbonates having a weight average molecular weight Mw, of 15,000 to 200,000 g/mol, the processes comprising reacting a dihydroxydiarylalkane and phosgene in the presence of a catalyst in a phase boundary process com... | 12/07/2010 |
| 7834125 | Polycarbonates, compositions made therefrom, methods of manufacture thereof, and articles therefrom A melt polymerized polycarbonate comprising repeat units in the polycarbonate derived from the melt polymerization of monomers (II) and/or (III), monomer (IV), and optionally monomer (VIII), wherein monomers (II) and (III) are diaryl dihydroxy compounds, monomer (IV... | 11/16/2010 |
| 7820778 | Light guide member and illumination unit Disclosed is a light guide member which includes a polycarbonate copolymer having a repeating unit represented by the formula (I) and a repeating unit represented by the formula (II), which is thin, and which is free from thermal degradation (yellowing) or deteriora... | 10/26/2010 |
| 7820779 | Nanostructured hybrid oligomer composition A nanostructured hybrid liquid oligomer composition including at least one epoxy-functional component (A), at least one cyclic carbonate component (B), at least one amine-functional component (C), and, optionally, at least one acrylate (methacrylate) functional comp... | 10/26/2010 |
| 7807772 | Aliphatic diol-based polycarbonates, method of making, and articles formed therefrom Disclosed herein is a copolymer comprising isosorbide carbonate units and a polysiloxane block, wherein the copolymer comprises greater than or equal to 50 mol % isosorbide carbonate units. ... | 10/05/2010 |
| 7799889 | Polycarbonates with good wettability The present invention provides a polycarbonate resin produced by the continuous interfacial process characterized in that after alkaline hydrolysis with sodium hydroxide, the polycarbonate resin contains an amount of 0.01 to 150 ppm of carbamate compounds according ... | 09/21/2010 |
| 7790833 | Processes for the polymerization of trimethylene carbonate to poly(trimethylene glycol carbonate trimethylene glycol ether) diol This invention relates to solventless processes for the polymerization of an unsubstituted or substituted trimethylene carbonate to an unsubstituted or substituted poly(1,3-propanediol carbonate 1,3-propanediol ether)diol, using one or more solid acid catalysts.... | 09/07/2010 |
| 7790832 | Methods for purifying 2-aryl-3,3-bis(hydroxyaryl)phthalimidines A method for purifying a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprises contacting a crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine with a purification agent, removing a 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound from the crude 2-aryl-3,3-bis(hyd... | 09/07/2010 |
| RE41616 | Tagging materials for polymers, methods, and articles made thereby A polymer comprising a tagging material is provided wherein the tagging material comprises at least one organic fluorophore dye, or at least one inorganic fluorophore, or at least one organometallic fluorophore, or at least one semi-conducting luminescent nanopartic... | 08/31/2010 |
| 7786246 | Isosorbide-based polycarbonates, method of making, and articles formed therefrom Disclosed herein is an isosorbide-based polycarbonate polymer comprising: an isosorbide unit, an aliphatic unit derived from a C14-44 aliphatic diacid, C14-44 aliphatic diol, or combination of these; and a polysiloxane block. ... | 08/31/2010 |
| 7772356 | Infrared absorption filter The present invention discloses an infrared absorption filter which enables a coloring matter having infrared absorptivity to be contained or dispersed uniformly in a high concentration and has excellent durability, and an infrared absorption panel comprising this i... | 08/10/2010 |
| 7772357 | Hydrolytically degradable polymers and hydrogels made therefrom A water soluble polymer comprising multiple degradable carbonate linkages in a backbone and, for each carbonate linkage in the backbone, an oligomer linked thereto by the carbonate linkage, wherein the oligomer is branched. ... | 08/10/2010 |
| 7767780 | Light-diffusing polycarbonate resin composition and light diffuser plate comprising the resin composition The present invention provides a light diffusing polycarbonate resin composition including a polycarbonate resin containing a polycarbonate copolymer which comprises a repeating unit represented by the general formula (I) shown below and a repeating unit represented... | 08/03/2010 |
| 7754845 | Production method of aromatic polycarbonate The object of the present invention is to provide a production method of a high molecular weight aromatic polycarbonate containing a reduced amount of a high melting point product, and having less thermal history received and excellent hue by a melt process. The pre... | 07/13/2010 |
| 7728099 | Preparation and use of ultrahigh-molecular-weight polycarbonates The present invention relates to a process for preparation of polycarbonates with weight-average molar mass MW≧230,000 g/mol and with ≦2% by weight content of cyclic compounds, including the following steps: (a) reaction of at least one o... | 06/01/2010 |
| 7718755 | Aliphatic diol-based polycarbonates, method of making, and articles formed therefrom The above-described and other deficiencies of the art are met by a method of making a polycarbonate polymer comprising isosorbide carbonate units, comprising melt reacting a dihydroxy compound comprising an isosorbide of the general formula (2a): | 05/18/2010 |
| 7700714 | Optical element and achromatic lens There are provided an optical element that comprises a polymer which has a structural unit derived from a specific dihydroxy compound typified by 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoro propane (bisphenol AF) and in which the relationship between a refractiv... | 04/20/2010 |
| 7696297 | Branched polycarbonates and processes for producing the same Methods for making a branched polycarbonate are disclosed. An interfacial mixture comprising water, a substantially water-immiscible organic solvent, a dihydroxy compound, a polyhydric branching agent, an endcapping agent, a catalyst, and a base is formed. The base ... | 04/13/2010 |
