Patent application number | Description | Published |
20090050842 | Cellulose Ester Compositions Having Low Bifringence and Films Made Therefrom Comprising a Plasticizer - The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. Therefore, these films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation. Another embodiment of the invention is directed to films made from the cellulose esters described herein further comprising a plasticizer. | 02-26-2009 |
20090054638 | Cellulose Ester Compositions Having Low Bifringence and Films Made Therefrom - The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. Therefore, these films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation. | 02-26-2009 |
20090105380 | UV ABSORBING ADDITIVES SUITABLE FOR THERMOPLASTIC ARTICLES MADE FROM PROCESSES WITH EXTENDED HEAT HISTORIES - A UV-protected, laminated article obtained by a thermocompressive lamination process. The laminated article is characterized by reduced haze due to the use of a benzotriazine UV absorber. A process for making such a laminated article and a method for preventing or inhibiting haze from developing in a UV-protected laminated article during application of heat and pressure are also described. | 04-23-2009 |
20090315219 | SCREW DESIGNS HAVING IMPROVED PERFORMANCE WITH LOW MELTING PET RESINS - Disclosed is a process for a melt processing a polyethylene terephthalate resin characterized by one or more of the following. The polyester particles may have at least two melting peaks wherein one of the at least two melting peaks is a low peak melting point with a range from 140° C. to 220° C., or from 140° C. to 230° C., and having a melting endothermic area of at least the absolute value of 1 J/g. The polyester particles may have one or more melting peaks at least one of which when measured on a DSC first heating scan has a heating curve departing from a baseline in the endothermic direction at a temperature of less than or equal to 200° C. The polyester particles may have an It.V. at their surface which is less than 0.25 dL/g higher than the It.V. at their center. The polyester particles may have not been solid stated. The melt processing device comprises a screw with a total length, L, a feed zone length in the range from 0.16L and 0.45L, a taper angle, φ, in the range from 0.5 degrees and 5.0 degrees and a compression ratio, CR, in the range from 2.0 and 5.0. | 12-24-2009 |
20100029927 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A CARBOXYLATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 02-04-2010 |
20100089288 | CELLULOSE ESTER COMPOSITIONS HAVING LOW BIFRINGENCE AND FILMS MADE THEREFROM COMPRISING A PLASTICIZER - The present inventions relate to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have low intrinsic birefringence. These films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). These films are useful in polarizer, protective, and compensator films and in molded optical parts, such as lenses. The resins of the present inventions can also be made to have “+C plate” behavior either by melt or solvent based processing, which is uncharacteristic of cellulose esters. Such +C behavior allows films having unique compensatory behavior. Other embodiments of the invention relate to methods of melt casting films while minimizing birefringence. Another embodiment of the invention is directed to films made from the cellulose esters described herein further comprising a plasticizer. | 04-15-2010 |
20100093996 | CELLULOSE ESTER COMPOSITIONS HAVING LOW BIFRINGENCE AND FILMS MADE THEREFROM - The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. These films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation. | 04-15-2010 |
20100112250 | HOT MELT ADHESIVES FOR ROLL-APPLIED LABELS - Disclosed are hot-melt adhesives prepared from polyesters containing 1,4-cyclohexane-dicarboxylic acid as a diacid component and a diol component containing at least two diols chosen from 1,4-cyclohexanedimethanol, triethylene glycol, and diethylene glycol. These adhesives set up rapidly within a well-defined temperature window. The hot-melt adhesives can be used in a variety of applications, but are especially suited as seaming adhesives for roll-applied labels. These adhesives have melting temperatures and crystallization properties that allow their application at temperatures cool enough to prevent curling and premature shrinkage of the shrink label during seaming, and yet produce strong label seams that can withstand the elevated temperatures of a shrink tunnel without sacrificing line speed. Also disclosed are labeled containers and a process for applying a roll-on, shrink label to a container using the hot-melt adhesives of the invention. | 05-06-2010 |
20100112251 | AROMATIC-ALIPHATIC POLYESTER HOT MELT ADHESIVES FOR ROLL-APPLIED LABELS - Disclosed are hot-melt adhesives prepared from aromatic-aliphatic polyesters containing terephthalic acid in combination with adipic acid, glutaric acid, or a mixture thereof, as diacid components and a diol component containing 1,4-butanediol, 1,6-hexanediol, or a combination thereof. These adhesives set up rapidly within a well-defined temperature window. The hot-melt adhesives can be used in a variety of applications, but are especially suited as seaming adhesives for roll-applied labels. These adhesives have melting temperatures and crystallization properties that allow their application at temperatures cool enough to prevent curling and premature shrinkage of the shrink label during seaming, and yet produce strong label seams that can withstand the elevated temperatures of a shrink tunnel without sacrificing line speed. Also disclosed are labeled containers and a process for applying a roll-on, shrink label to a container using the hot-melt adhesives of the invention. | 05-06-2010 |
20110213138 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A HALOGENATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 09-01-2011 |
20120101269 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A CARBOXYLATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 04-26-2012 |
20120123112 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A HALOGENATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 05-17-2012 |
20120157604 | Polyesters Containing Particular Phosphorus Compounds Blended with Other Polymers - Described as one aspect of the invention are polymer blends comprising at least one polyester wherein the polymer blend comprises:
| 06-21-2012 |
20120157636 | Miscible Polyester Blends Utilizing Recycled Polyesters - Polyester blends containing recycled, post-consumer polyethylene terephthalate are described. The blends have the advantage of being miscible (visually clear) and remaining clear after post-extrusion heat histories. | 06-21-2012 |
20120184641 | Haze Reduction for Blends of Aromatic-Aliphatic Polyesters and Antimicrobial Additives - This invention relates to a blend comprising: | 07-19-2012 |
20120184643 | Haze Reduction for Blends of Aromatic-Aliphatic Polyesters with Aliphatic Polyesters and Antimicrobial Additives - This invention relates to a polymer blend comprising: | 07-19-2012 |
20120262650 | Cellulose Ester Optical Films - Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology. | 10-18-2012 |
20120263889 | Cellulose Ester Optical Films - Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology. | 10-18-2012 |
20120263890 | Cellulose Ester Optical Films - Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology. | 10-18-2012 |
20120264930 | Cellulose Ester Optical Films - Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology. | 10-18-2012 |
20120320313 | CELLULOSE TRIACETATE FILMS WITH LOW BIREFRINGENCE - The present invention relates to films made from cellulose triacetate having low hydroxyl content and certain plasticizers. These films can exhibit low or zero optical retardation values, making them particularly suitable for use in optical applications, such as in liquid crystal displays (LCD) as protective and compensator films. | 12-20-2012 |
20120328849 | LAMINATION PROCESS OPTIMIZATION UTILIZING NEOPENTYL GLYCOL-MODIFIED POLYESTERS - Thermoplastic articles made from polyesters modified by neopentyl glycol laminate more quickly than cyclohexanedimethanol-modified versions yet retain the properties that make modified polyesters the material of choice in this market—water-like color and clarity, high impact strength, low lamination temperature and low flammability. For situations where a faster cycle time is not needed, articles laminated with neopentyl glycol-modified polyesters can alternatively be manufactured at lower temperatures. | 12-27-2012 |
20130143052 | ENCAPSULATION OF ELECTRICALLY ENERGIZED ARTICLES - In one aspect the present invention relates to a method of making an encapsulated electrically energized device, the method comprising: providing a first layer and a second layer each independently comprising a copolyester, a polycarbonate, a polyacrylate, polycarbonate/polyester miscible blends, or mixtures thereof, providing the electrically energized between the first and second layer, thermocompressively fusing the first layer and the second layer to encapsulate the electrically energized device by applying pressure at a temperature, sufficient to form the article, to a perimeter of the surface of the first and second layers, wherein the perimeter does not overlap the electrically energized device, wherein the temperature at the interface of the first and second layers is equal to or greater than Tg of the first layer and the second layer, and wherein the polyester layers have a flow during encapsulation less than the flow that induces fractures in the electrically energized device. | 06-06-2013 |
20130150492 | PROCESS FOR DISPERSING CELLULOSE ESTERS INTO ELASTOMERIC COMPOSITIONS - A process to produce an elastomeric composition is provided. The process comprising:
| 06-13-2013 |
20130150493 | PROCESS FOR DISPERSING CELLULOSE ESTERS INTO ELASTOMERIC COMPOSITIONS - A cellulose ester concentrate is provided comprising at least one non-nitrile carrier elastomer and at least one non-fibril cellulose ester, wherein said cellulose ester concentrate comprises at least 15 weight percent of said cellulose ester. | 06-13-2013 |
20130150495 | PROCESS FOR DISPERSING CELLULOSE ESTERS INTO ELASTOMERIC COMPOSITIONS - A process to produce a cellulose ester concentrate is provided. The process comprising mixing at least one cellulose ester with one or more carrier elastomers to produce the cellulose ester concentrate, wherein at least a portion of the mixing occurs at a temperature that exceeds the Tg of the cellulose ester, wherein at least a portion of the mixing operates at a shear rate of at least 50 s | 06-13-2013 |
20130150500 | PROCESS FOR DISPERSING CELLULOSE ESTERS INTO ELASTOMERIC COMPOSITIONS - An elastomeric composition is provided comprising at least one non-fibril cellulose ester, at least one carrier elastomer, and at least one primary elastomer, wherein the elastomeric composition exhibits a dynamic mechanical analysis (DMA) strain sweep modulus as measured at 5% strain and 30° C. of at least 1,450,000 Pa and a molded groove tear as measured according to ASTM D624 of at least 120 lbf/in. | 06-13-2013 |
20130190485 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A HALOGENATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 07-25-2013 |
20130217830 | Clear Semi-Crystalline Articles with Improved Heat Resistance - The present invention relates to a clear, semicrystalline article comprising a polyester comprising terephthalic acid residues as the dicarboxylic acid component, and 1 to 15 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 85 to 99 mole % of 1,4-cyclohexanedimethanol residues as the glycol component. The article may be in the form of a film or sheet, a bottle, or a fiber. The article, when produced by a process involving strain-induced crystallization, is characterized with high crystallinity. | 08-22-2013 |