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 |
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 |
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 |
20100295200 | VOID-CONTAINING POLYESTER SHRINK FILM WITH IMPROVED DENSITY RETENTION - Disclosed are void-containing polyester shrink films which show excellent density retention upon exposures to high temperatures. The films have high shrinkage and retain their low density after processing under conditions of temperature and moisture used in typical recycling processes. The films are useful for sleeve label and other shrink film applications, and their lower density allows them to be readily separated from soft drink bottles, food containers and the like during recycling operations. Also disclosed is a process for void-containing polyester shrink films having high shrinkage and low density after exposure to elevated temperatures. | 11-25-2010 |
20110200774 | TRANSPARENT POLYMER BLENDS AND ARTICLES PREPARED THEREFROM - Disclosed are polymer compositions having high transparency and low haze comprising immiscible blends of one or more thermoplastic polymers selected from polyesters, polycarbonates, and polyarylates, and a copolyamide or a transamidized, homogeneous blend of a least two polyamides. The components of the immiscible blend which have refractive indices which differ by about 0.006 to about −0.0006. The small difference in the refractive indices enable the incorporation of regrind into the polymer composition to produce transparent shaped articles. The blends of the present invention are useful in producing shaped articles such as, for example, sheeting, films, tubes, bottles, preforms and profiles. These articles may have one or more layers and can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into the compositions to produce oxygen-scavenging compositions. | 08-18-2011 |
20110201703 | PROCESS FOR THE PREPARATION OF TRANSPARENT SHAPED ARTICLES - Disclosed is a process for the preparation of shaped articles such as, for example, sheeting, films, tubes, bottles, preforms and profiles, having high transparency and low haze comprising immiscible blends of one or more thermoplastic polymers selected from polyesters, polycarbonates, and polyarylates, and a copolyamide or a transamidized, homogeneous blend of a least two polyamides. The components of the immiscible blend which have refractive indices which differ by about 0.006 to about −0.0006. The small difference in the refractive indices enables the incorporation of regrind into the polymer composition to produce transparent shaped articles. These articles may have one or more layers and can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into the compositions to produce shaped articles having oxygen-scavenging properties. | 08-18-2011 |
20110319529 | CELLULOSE ESTER/ELASTOMER COMPOSITIONS - A cellulose ester composition is provided comprising at least one cellulose ester and at least one additive selected from the group consisting of a compatibilizer, and a plasticizer. Processes for producing the cellulose ester composition are also provided. In another embodiment, a cellulose ester/elastomer composition is provided comprising at least one elastomer, at least one cellulose ester; and at least one additive; wherein the additive is at least one selected from the group consisting of a compatibilizer and a plasticizer. Processes for producing the cellulose ester/elastomer composition is also provided as well as articles comprising the cellulose ester/elastomer composition. | 12-29-2011 |
20110319530 | PROCESSES FOR MAKING CELLULOSE ESTATE/ELASTOMER COMPOSITIONS - A cellulose ester composition is provided comprising at least one cellulose ester and at least one additive selected from the group consisting of a compatibilizer, and a plasticizer. Processes for producing the cellulose ester composition are also provided. In another embodiment, a cellulose ester/elastomer composition is provided comprising at least one elastomer, at least one cellulose ester; and at least one additive; wherein the additive is at least one selected from the group consisting of a compatibilizer and a plasticizer. Processes for producing the cellulose ester/elastomer composition is also provided as well as articles comprising the cellulose ester/elastomer composition. | 12-29-2011 |
20110319531 | CELLULOSE ESTER COMPOSITIONS - A cellulose ester composition is provided comprising at least one cellulose ester and at least one additive selected from the group consisting of a compatibilizer, and a plasticizer. Processes for producing the cellulose ester composition are also provided. In another embodiment, a cellulose ester/elastomer composition is provided comprising at least one elastomer, at least one cellulose ester; and at least one additive; wherein the additive is at least one selected from the group consisting of a compatibilizer and a plasticizer. Processes for producing the cellulose ester/elastomer composition is also provided as well as articles comprising the cellulose ester/elastomer composition. | 12-29-2011 |
20110319532 | PROCESSES FOR MAKING CELLULOSE ESTER COMPOSITIONS - A cellulose ester composition is provided comprising at least one cellulose ester and at least one additive selected from the group consisting of a compatibilizer, and a plasticizer. Processes for producing the cellulose ester composition are also provided. In another embodiment, a cellulose ester/elastomer composition is provided comprising at least one elastomer, at least one cellulose ester; and at least one additive; wherein the additive is at least one selected from the group consisting of a compatibilizer and a plasticizer. Processes for producing the cellulose ester/elastomer composition is also provided as well as articles comprising the cellulose ester/elastomer composition. | 12-29-2011 |
20120000833 | Magnetically Enhanced Recycling of Plastics - The present invention relates to the use of ferromagnetic materials to improve the recyclability of plastic packaging. | 01-05-2012 |
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 |
20130131221 | CELLULOSE ESTER/ELASTOMER COMPOSITIONS - A cellulose ester composition is provided comprising at least one cellulose ester and at least one additive selected from the group consisting of a compatibilizer, and a plasticizer. Processes for producing the cellulose ester composition are also provided. In another embodiment, a cellulose ester/elastomer composition is provided comprising at least one elastomer, at least one cellulose ester; and at least one additive; wherein the additive is at least one selected from the group consisting of a compatibilizer and a plasticizer. Processes for producing the cellulose ester/elastomer composition is also provided as well as articles comprising the cellulose ester/elastomer composition. | 05-23-2013 |
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 |
20130292305 | FILMS CONTAINING FOAMABLE INKS OR COATINGS AND PROCESS FOR SEPARATING SIMILAR DENSITY MATERIALS - The present invention is directed to films that are deposited with foamable inks or coatings. One purpose is to facilitate their separation for recycling purposes. The films are particularly useful as packaging labels. The inks/coatings are designed so that foaming is activated when the film is in the hot-wash stage of a typical recycle process. This provides added buoyancy to the film allowing it to float to the surface and be removed, thereby significantly improving the efficiency of the recycle process. A feature of the invention is that, prior to this hot wash, the inks/coatings remain substantially unfoamed and thereby do not negatively affect the aesthetics of labeled package. The foamable inks/coatings can be used with any type of film. | 11-07-2013 |
20140087145 | SELF-CORRUGATING LAMINATES AND METHODS OF MAKING THEM - A self-corrugating laminate is disclosed. The self-corrugating laminate includes an upper and a lower shrinkable film layer each having at least one axis of shrinkage and a non-shrinkable core bonded between the upper and lower shrinkable film layers along bond lines. The bond lines that bond the upper shrinkable film layer to the non-shrinkable core are staggered relative to the bond lines that bond the lower shrinkable film layer to the non-shrinkable core such that upon shrinkage of the shrinkable film layers, structural corrugations are formed in the non-shrinkable core. The shrinkable film layers of the invention exhibit a percent shrinkage along an axis of shrinkage from about 10 to about 45 percent. | 03-27-2014 |
20140087146 | SELF-CORRUGATING LAMINATES AND CORRUGATED STRUCTURES FORMED THEREFROM - Self-corrugating laminates are disclosed that include first and second non-shrinkable core layers bonded together in a grid of spaced bond points arranged substantially linearly along perpendicular horizontal and vertical bond point lines; and upper and lower shrinkable film layers, each having a primary axis of shrinkage and each bonded to one of the non-shrinkable core layers along bond lines that are substantially perpendicular to the primary axis of shrinkage of the immediately adjacent shrinkable film layer. Upon shrinkage of the upper and lower shrinkable film layers a corrugated structure is formed that includes first and second core layers each having spaced structural corrugations formed therein. | 03-27-2014 |
20140087147 | SELF-CORRUGATING LAMINATES AND METHODS OF MAKING THEM - Self-corrugating laminates are disclosed that include first and second shrinkable film layers, each having a primary axis of shrinkage, bonded together in a grid of spaced bond points arranged substantially linearly along perpendicular horizontal and vertical bond lines such that the axes of shrinkage are substantially perpendicular to one another. Upon shrinkage of the shrinkable film layers, a structural corrugate is formed that includes first and second corrugated layers each with structural corrugations therein arranged along lines of corrugation. At the interface of the two corrugated layers, the lines of corrugation in the first corrugated layer are substantially perpendicular to the lines of corrugation in the second corrugated layer. | 03-27-2014 |
20140318591 | SELF-CORRUGATING LAMINATES USEFUL IN THE MANUFACTURE OF THERMOELECTRIC DEVICES AND CORRUGATED STRUCTURES THEREFROM - Self-corrugating laminates useful in the manufacture of thermoelectric devices are disclosed. The laminates include an upper and a lower shrinkable film layer and a non-shrinkable core with a thermoelectric pattern formed thereon bonded between said upper and lower shrinkable film along bond lines arranged parallel, substantially parallel, radially, or annularly. The bond lines that bond the upper shrinkable film layer to top surface of the nonshrinkable core are staggered relative to the bond lines that bond the lower shrinkable film layer to the bottom surface of the non-shrinkable core such that upon shrinkage of the shrinkable film layers, structural corrugations are formed in the non-shrinkable core. Thermoelectric modules or devices and methods for forming them from the self-corrugating laminates are also described. | 10-30-2014 |