| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 536058000 | Esters | 54 |
| 20090043088 | Cellulose Ester and Production Method Thereof - A cellulose ester and film thereof useful for remarkably improving optical properties such as optical isotropy are provided. The cellulose ester is adjusted so that the degree of substitution is from 2.90 to 2.965, the total of degrees of substitution at 2- and 3-positions is not less than 1.97, and the half height width of chemical composition expressed in degree of substitution is not more than 0.09. Such a cellulose ester maybe produced by a method for producing a cellulose ester, which comprises (i) an acylating step for acylating a cellulose with an acylating agent in the presence of a sulfuric acid catalyst, and (ii) a hydrolyzing step for hydrolyzing the acylated product in the presence of a sulfuric acid catalyst, and in which the acylation carried out with from 1.40 to 2.0 molar equivalents of the acylating agent relative to 1 mol of a hydroxyl group in the cellulose in the presence of 6.5 to 9.5 parts by weight of the sulfuric acid catalyst relative to 100 parts by weight of the cellulose in the acylating step (i). | 02-12-2009 |
| 20110282049 | LOW MOLECULAR WEIGHT CELLULOSE MIXED ESTERS AND THEIR USE AS LOW VISCOSITY BINDERS AND MODIFIERS IN COATING COMPOSITIONS - Cellulose mixed esters are disclosed having low molecular weights and low degrees of polymerization. These new cellulose mixed esters include cellulose acetate propionate and cellulose acetate butyrate. The esters exhibit solubility in a wide range of organic solvents with minimal viscosity increase, are compatible with a wide variety of resins, and are useful in coatings and inks compositions as binder resins and rheology modifiers. | 11-17-2011 |
| 20090163703 | Phase difference plate comprising polymer film containing compound having rod-shaped molecular structure - A phase difference plate which comprises one sheet of polymer film containing a compound having a rod-shaped molecular structure and exhibiting a maximum absorption wavelength (λmax) of less than 250 nm in an ultraviolet spectrum of its solution and which exhibits a retardation value as measured at a wavelength of 450 nm (Re450) of 60 to 135 nm and a retardation value as measured at a wavelength of 590 nm (Re590) of 100 to 170 nm, where the relationship: Re590−Re450≧2 nm is satisfied. The phase difference plate functions as a λ/4 plate. | 06-25-2009 |
| 20090203899 | TREATMENT OF CELLULOSE ESTERS - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by esterifying cellulose in a reaction medium comprising one or more ionic liquids. Cellulose esters prepared via the methods of the present invention can be contacted with at least one bleaching agent to produce bleached cellulose esters having a ΔE value of less than 30. | 08-13-2009 |
| 20090203900 | PRODUCTION OF CELLULOSE ESTERS IN THE PRESENCE OF A COSOLVENT - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by subjecting a cellulose-ionic liquid solution comprising cellulose, one or more ionic liquids, and one or more co-solvents to esterification to thereby produce an esterified medium comprising a cellulose ester. The co-solvents employed in the present invention can be either miscible or immiscible with the cellulose-ionic liquid solution but can be readily dispersed or soluble in the esterified medium. | 08-13-2009 |
| 20090203898 | CELLULOSE ESTERS AND THEIR PRODUCTION IN HALOGENATED IONIC LIQUIDS - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by esterifying cellulose in a reaction medium comprising one or more halide ionic liquids and at least one binary component. Cellulose esters prepared via the methods of the present invention can have a degree of substitution (“DS”) of at least 1.5 and can comprise a plurality of ester substituents, where at least 50 percent of the ester substituents comprise alkyl esters having a carbon chain length of at least 6 carbons. | 08-13-2009 |
| 20110306760 | CELLULOSE ESTERS AND THEIR PRODUCTION IN HALOGENATED IONIC LIQUIDS - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by esterifying cellulose in a reaction medium comprising one or more halide ionic liquids and at least one binary component. Cellulose esters prepared via the methods of the present invention can have a degree of substitution (“DS”) of at least 1.5 and can comprise a plurality of ester substituents, where at least 50 percent of the ester substituents comprise alkyl esters having a carbon chain length of at least 6 carbons. | 12-15-2011 |
| 20120088909 | Method for producing polysaccharide derivatives - Process for esterifying, etherifying or silylating polysaccharide or derivatives thereof by means of an esterifying reagent, etherifying reagent or silylating reagent in the presence of an ionic liquid, in which | 04-12-2012 |
| 20100168409 | THERMOPLASTIC RESIN FILM AND METHOD FOR PRODUCING SAME - To provide a thermoplastic resin film, and process for producing the same, which can obtain a film having high optical properties in which the occurrence of residual strain and the exhibition of retardation during film forming are suppressed. A film ( | 07-01-2010 |
| 536059000 | Sulfur containing acid | 3 |
| 20100286387 | CRYSTALLINE SULPHATED CELLULOSE II AND ITS PRODUCTION FROM SULPHURIC ACID HYDROLYSIS OF CELLULOSE - A method for producing crystalline sulphated cellulose II materials with relatively low degree of polymerization from spent liquors of sulphuric acid (H | 11-11-2010 |
| 536060000 | Xanthate or viscose | 2 |
| 20090312536 | Process For Producing A Pulp - The invention relates to a process for producing a dissolving pulp from a cellulosic starting material using the kraft process, comprising the step of cooking the starting material with a cooking liquor. The process according to the invention characterized in that the starting material is exposed to a steam treatment prior to cooking and that the pulp obtained by cooking is subjected to cold caustic extraction (CCE) in the course of further processing. | 12-17-2009 |
| 536061000 | Subsequent treatment process | 1 |
| 20130079508 | FILTER SYSTEM, IN PARTICULAR FOR VISCOSE FILTRATION - The invention relates to a filter having a layer which is permeable to a medium to be filtered, comprising at least one nonwoven part, wherein the nonwoven part withstands higher mechanical loads. According to the invention the layer comprises, in addition to the nonwoven part, at least one sheet-like support part connected to at least one sub-region of at least one side of the nonwoven part. | 03-28-2013 |
| 536063000 | Carboxylic acid esters | 42 |
| 20100099863 | METHOD FOR LONGITUDINALLY STRETCHING THERMOPLASTIC RESIN FILM AND LONGITUDINALLY STRETCHED FILM PRODUCED BY THE METHOD - A method according to one of the aspects of the present invention, for longitudinally stretching a thermoplastic resin film by drawing the thermoplastic resin film by a pair of rolls rotating at different circumferential velocities is characterized in that an draw initiation position is set between the pair of the rolls, and that the thermoplastic resin film is longitudinally stretched, while being heated locally and rapidly by contact-free local and rapid heating device installed at the draw initiation position along the film width direction in a range from Tg of the resin film −5° C. or higher to Tg +30° C. or lower. | 04-22-2010 |
| 20090306361 | PROCESS FOR PRODUCING CELLULOSE ESTER FILM, CELLULOSE ESTER FILM, POLARIZATION PLATE AND DISPLAY UNIT - A process for producing a cellulose ester film that is produced by a melt casting method using no solvent at film formation, and that attains reduction of bright spot foreign matter, excelling in planarity, and that attains reduction of staining, excelling in dimensional stability. It is also intended to provide such a cellulose ester film, a polarizing plate and a liquid crystal display unit. There is provided a process for producing a cellulose ester film, characterized by forming into a film a material containing a cellulose ester and an ester compound of 1 to 7.5 distribution coefficient obtained by condensation of a polyhydric alcohol and an organic acid of the general formula: (1) according to a melt casting method. | 12-10-2009 |
| 20090111980 | MODIFICATION OF AMINES AND ALCOHOLS - A process for the modification of amines and alcohols, comprising (i) providing a substrate having amino groups or alcohol groups, wherein said substrate is, e.g., a polysaccharide; (ii) providing a modifying agent which is a lactone, an ester, a polyester, a carbonate, a polycarbonate, a lactide, a glycolide, an anhydride, an acid, a thioester or a carbamate; (iii) providing a catalyst which is, e.g., a amino acid or an organic acid; and (iv) reacting the substrate with the modifying agent in the presence of the catalyst. | 04-30-2009 |
| 20090286972 | CELLULOSE ACYLATE FILM AND METHOD FOR MANUFACTURING THE SAME - According to the present invention, a film is formed from a powdered cellulose acylate resin using a twin-screw extruder which has complete-mating-type screws and whose L/D is set in the range of 20 to 55, while setting the temperature of the resin in the extruder in the range of Tm+10° C. to Tm+70° C., keeping the average residence time of the cellulose acylate resin within 5 minutes, and drawing a vacuum so that the degree of vacuum in extruder after the powdered cellulose acylate resin has been melted is kept at 100 Torr or lower, whereby the color change or deterioration in mechanical strength of the resin can be decreased, and thus, a high-quality and high-functionality film which is good for the optical application can be provided. | 11-19-2009 |
| 20100137578 | CELLULOSE ESTER FILM FOR OPTICAL USE, AND POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY USING SUCH CELLULOSE ESTER FILM FOR OPTICAL USE - Disclosed is a cellulose ester film for optical use which contains an ultraviolet absorbent and hardly suffers from retardation fluctuations. The cellulose ester film is excellent in spectral absorption property as an optical film. In addition, the cellulose ester film is free from coloration and has excellent transparency, which having sufficient ultraviolet absorption and excellent long-term light resistance. Also disclosed are a polarizing plate and liquid crystal display wherein high contrast is maintained by using such a cellulose ester film for optical use. Specifically disclosed is a cellulose ester film for optical use which is characterized by containing at least one compound represented by one of the general formulae 1-3. Also specifically disclosed are a polarizing plate and liquid crystal display using such a cellulose ester film for optical use. | 06-03-2010 |
| 20100228019 | Production Process of Glucan Derivative Modified with Cyclic Ester - A process for producing a glucan derivative modified with a cyclic ester with a highly suppressed homopolymerization of a cyclic ester is provided. | 09-09-2010 |
| 20090111981 | CELLULOSE ACYLATE FILM AND ITS APPLICATIONS - A cellulose acylate film, comprising a cellulose acylate having at least one substituent (Substituent A) comprising an aromatic group having at least one C4 or longer aliphatic group, is disclosed. | 04-30-2009 |
| 20090312537 | CARBOHYDRATES - Carbohydrates having functional groups, such as carboxylic acid groups and methods of making such carbohydrates. | 12-17-2009 |
| 20080200667 | METHOD FOR PRODUCING CELLULOSE ACYLATE FILM - Cellulose with a calcium (Ca) content of at most 10 ppm is used as a raw material of cellulose acylate. The cellulose acylate is synthesized by esterification of cellulose with carboxylic acid such as acetic acid. A dope containing the cellulose acylate and a solvent is continuously cast onto a belt, which is a support, to form a casting film. The casting film is peeled off from the belt as a film, and then the film is dried. | 08-21-2008 |
| 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 |
| 536064000 | Mixed carboxylate esters | 13 |
| 20120095207 | CELLULOSE ESTERS AND THEIR PRODUCTION IN CARBOXYLATED IONIC LIQUIDS - Ionic liquids and cellulose ester compositions and processes and apparatus for producing ionic liquids and cellulose esters. Cellulose esters can be produced by dissolving cellulose in carboxylated ionic liquids and thereafter contacting the cellulose solution with at least one acylating reagent. Cellulose esters produced via the present invention can comprise ester groups that originate from the carboxylated ionic liquid and/or the acylating reagent. | 04-19-2012 |
| 20120330002 | HETEROGENEOUS THIOL-ENE CLICK MODIFICATIONS OF SOLID POLYSACCHARIDE-BASED MATERIALS - This invention concerns the first environmentally benign heterogeneous modification of polysaccharide-based material in native solid state by thiol-ene “click chemistry”. The direct reaction of a thiol with an un-activated double or triple bond by thiol-ene and thiol-enyne click modification is thermally or photochemically catalyzed and is completely metal-free and allows for a highly modular approach to modifications of fibers and fiber-based materials. | 12-27-2012 |
| 536065000 | Propionate, butyrate or isobutyrate containing | 11 |
| 20120165517 | CELLULOSE DERIVATIVE, THERMO-MOLDING MATERIAL, MOLDED BODY AND METHOD FOR PREPARATION THEREOF, AND CASE FOR ELECTRIC AND ELECTRONIC DEVICES - A thermo-molding material contains a water-insoluble cellulose derivative, wherein the water-insoluble cellulose derivative comprises: A) a hydrocarbon group; B) a group containing an acyl group: —CO—R | 06-28-2012 |
| 20120197011 | ESTERS OF CELLULOSIC MATERIALS AND DIACIDS AND METHOD OF MAKING THEREOF - The present invention relates to esters of diacids and cellulosic materials and methods for making thereof. The ester has the chemical composition of Formula (I) Formula I where R1, R2, and R3 can be the same or different, and each of which is selected from —H, —COR′, —R′″, or —COR″ COOH, with the proviso that at least one of the R1, R2, or R3 is —COR″ COOH; R′ is an alkyl, alkenyl, alkynyl, or aromatic group; R″ is an alkyl, alkenyl, or alkynyl group having 4 or more carbon atoms (≧C | 08-02-2012 |
| 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 |
| 20110098464 | CELLULOSE INTERPOLYMERS AND METHODS OF OXIDATION - This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents. | 04-28-2011 |
| 20120202984 | TREATMENT OF CELLULOSE ESTERS - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by esterifying cellulose in a reaction medium comprising one or more ionic liquids. Cellulose esters prepared via the methods of the present invention can be contacted with at least one bleaching agent to produce bleached cellulose esters having a ΔE value of less than 30. | 08-09-2012 |
| 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 |
| 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 |
| 20120238741 | PRODUCTION OF CELLULOSE ESTERS IN THE PRESENCE OF A COSOLVENT - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by subjecting a cellulose-ionic liquid solution comprising cellulose, one or more ionic liquids, and one or more co-solvents to esterification to thereby produce an esterified medium comprising a cellulose ester. The co-solvents employed in the present invention can be either miscible or immiscible with the cellulose-ionic liquid solution but can be readily dispersed or soluble in the esterified medium. | 09-20-2012 |
| 20120238742 | PRODUCTION OF CELLULOSE ESTERS IN THE PRESENCE OF A COSOLVENT - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by subjecting a cellulose-ionic liquid solution comprising cellulose, one or more ionic liquids, and one or more co-solvents to esterification to thereby produce an esterified medium comprising a cellulose ester. The co-solvents employed in the present invention can be either miscible or immiscible with the cellulose-ionic liquid solution but can be readily dispersed or soluble in the esterified medium. | 09-20-2012 |
| 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 |
| 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 |
| 536066000 | Ether-esters | 1 |
| 20120296078 | ACETYLATED CELLULOSE ETHER AND ARTICLES COMPRISING THE SAME - Acetylated cellulose ether and an article including the same. The acetylated cellulose ether has a degree of substitution (DS) of alkyl group of 1 to 2, a molar substitution (MS) of hydroxyalkyl group of 0 to 1, and a degree of substitution (DS) of acetyl group of 1 to 2. | 11-22-2012 |
| 536068000 | Propionates, butyrates or isobutyrates | 5 |
| 20090062524 | METHOD FOR BREAKING DOWN CELLULOSE IN SOLUTION - The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water. | 03-05-2009 |
| 20120142910 | CELLULOSE ESTERS AND THEIR PRODUCTION IN CARBOXYLATED IONIC LIQUIDS - Ionic liquids and cellulose ester compositions and processes and apparatus for producing ionic liquids and cellulose esters. Cellulose esters can be produced by dissolving cellulose in carboxylated ionic liquids and thereafter contacting the cellulose solution with at least one acylating reagent. Cellulose esters produced via the present invention can comprise ester groups that originate from the carboxylated ionic liquid and/or the acylating reagent. | 06-07-2012 |
| 20110046365 | CELLULOSE DERIVATIVES, METHOD OF PRODUCING THE SAME AND USE THEREOF - A transglycosylation product, a method of producing the same and use of the product. The transglycosylation product comprises an alkyl or hydroxyalkyl glycoside of a cellulose ester or ether, wherein the alkyl or hydroxyalkyl groups of the glycoside residue comprise a carbon chain having 1 to 4 carbon atoms, and having 0 to 2 free hydroxyl groups and being attached to the 1-carbon of the anhydroglucose unit via an oxy group. The product can be produced by mixing the cellulose derivative with mono-, di- or triol to form a reaction mixture, after which the reaction mixture is heated and the reaction is continued until a clear mixture is obtained. After cooling the recoverable product is suitable for use for example as an adhesive or as a hydrophobic coating. | 02-24-2011 |
| 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 |
| 20100022764 | METHOD AND APPARATUS FOR PRODUCING CELLULOSE ACYLATE FILM, AND CELLULOSE ACYLATE FILM - According to the present invention, the adaptability to producing the cellulose acylate film and the surface properties of the cellulose acylate film produced by means of the melt film-forming method can be remarkably improved. Accordingly, there is also improved the surface properties of a stretched cellulose acylate film produced by stretching such an unstretched cellulose acylate film. | 01-28-2010 |
| 536069000 | Acetates | 13 |
| 20090062525 | METHOD OF ADJUSTING THE DEGREE OF SUBSTITUTION WITH ACETYL GROUP OF CELLULOSE ACETATE - A process for adjusting an intermolecular or intramolecular degree of acetyl substitution of cellulose acetate is disclosed. The process comprises ripening cellulose acetate in the presence of a catalyst, an acetyl donor, and water or an alcohol. The amount of water and the alcohol is in the range of 0.1 to 10 mol % based on the amount of the acetyl donor. | 03-05-2009 |
| 20090082557 | CELLULOSE ACYLATE FILM AND ITS APPLICATIONS - A novel cellulose acylate film is disclosed. The film is formed of a composition comprising at least one cellulose acylate having an aromatic group-containing acyl group (Substituent A), in which a substitution degree with Substituent A satisfies following relational expressions (I) and (II): | 03-26-2009 |
| 20100222567 | STRETCHED CELLULOSE ACYLATE FILM AND PROCESS FOR PRODUCING THE SAME - One embodiment of the present invention provides a method for producing a stretched cellulose acylate film with an in-plane retardation, Re, of 100 nm or more and a relationship between the thickness direction retardation, Rth, and Re which satisfies Rth<(Re/2), by longitudinally stretching an unstretched cellulose acylate film in a longitudinal direction by pulling by means of a difference in circumferential velocity between a pair of rollers, wherein the method is characterized in that the cellulose acylate film is subjected to free-end uniaxial stretching to a longitudinal stretch ratio of 1 to 2 while the film is being heated in a heating oven installed between the pair of rollers at a stretching temperature in the range of Tc−10° C. to Tc+70° C., Tc being the crystallization temperature of the film, and with the temperature difference in the film width direction maintained within 10° C. | 09-02-2010 |
| 20090036667 | CELLULOSE ACYLATE FILM AND METHOD FOR PRODUCING SAME, POLARIZING PLATE, RETARDATION FILM, OPTICAL COMPENSATORY FILM, ANTI-REFLECTION FILM, AND LIQUID CRYSTAL DISPLAY DEVICE - A cellulose acylate film is stretched in the longitudinal direction by 1-300% under such conditions that the ration of the stretching distance (L) to the width (W) of the film before stretching, i.e., length/width ratio (L/W), is higher than 0.01 and lower than 0.3. The film stretched is relaxed in the longitudinal direction by 1-50% to produce a cellulose acylate film. When this film is incorporated in a liquid-crystal display, it can prevent the occurrence of color unevenness even when used in an high-temperature high-humidity atmosphere. | 02-05-2009 |
| 20110009610 | Process For The Acetylation Of Lignocelluloses, Hemicelluloses, and Celluloses With Ketene - The invention relates to a process for acetylating celluloses, lignocelluloses and hemicelluloses such as wood, straw and cotton, and regenerated celluloses produced from natural products, by means of ketene. | 01-13-2011 |
| 20110166340 | Process for adjusting degree of acetyl substitution of cellulose acetate - A process for adjusting an intermolecular or intramolecular degree of acetyl substitution of cellulose acetate is disclosed. The process comprises ripening cellulose acetate in the presence of a catalyst, an acetyl donor, and water or an alcohol. The amount of water and the alcohol is in the range of 0.1 to 10 mol % based on the amount of the acetyl donor. | 07-07-2011 |
| 20120172585 | CELLULOSE DIACETATE FOR RETARDATION FILM - To provide a cellulose acetate which gives a cellulose acetate optical film exhibiting optical properties as a result of stretching, in which the film shows excellent stretchability and gives a stretched film having excellent optical properties. | 07-05-2012 |
| 536076000 | Subsequent treatment process | 4 |
| 20130096296 | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst - Instilling an acidic catalyst to a reaction mixture can be beneficial during the acylation of cellulose. Methods described herein can comprise preparing a reaction mixture comprising an acylating agent and cellulose, instilling a catalyst comprising an acid to the reaction mixture, and reacting the cellulose with the acylating agent in the presence of the catalyst, thereby forming an acylated cellulose. | 04-18-2013 |
| 20130096298 | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst - Instilling an acidic catalyst to a reaction mixture can be beneficial during the acylation of cellulose. Methods described herein can comprise preparing a reaction mixture comprising an acylating agent and cellulose, instilling a catalyst comprising an acid to the reaction mixture at an overall catalyst loading level of about 10% to about 20% by weight of the cellulose, and reacting the cellulose with the acylating agent in the presence of the catalyst, thereby forming an acylated cellulose. | 04-18-2013 |
| 20130096297 | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst - Instilling an acidic catalyst to a reaction mixture can be beneficial during the acylation of cellulose. Methods described herein can comprise preparing a reaction mixture comprising an acylating agent and cellulose, instilling a catalyst comprising an acid to the reaction mixture at an overall catalyst loading level of about 1% or less by weight of the cellulose, and reacting the cellulose with the acylating agent in the presence of the catalyst, thereby forming an acylated cellulose. | 04-18-2013 |
| 20090171079 | 6-POSITION HIGHLY ACETYLATED CELLULOSE DIACETATE AND PROCESS FOR PRODUCING THE SAME - Disclosed is a cellulose diacetate comprising a 6-position highly acetylated cellulose diacetate having a 6-percent viscosity of 40 to 600 mPa·s, and having a total degree of acetyl substitution of DSt and a degree of acetyl substitution at the 6-position of DS6, wherein DSt and DS6 satisfy following Conditions (1) and (2): | 07-02-2009 |
| 536083000 | Halogen containing compound utilized in process | 2 |
| 20130046089 | ACETYLATION OF CELLULOSE IN DENSIFIED GAS - Cellulose acetates and processes for producing same. The process involves esterifying a cellulose containing material in the presence of a densified gas such as supercritical carbon dioxide to form a cellulose acetate product having a degree of substitution less than 3. The cellulose acetate preferably is sulfate-free. | 02-21-2013 |
| 20090012283 | Cellulose Acylate Film and Method for Producing Same, and Retardation Film, Polarizer and Liquid Crystal Display Device Comprising the Film - A cellulose acylate film satisfying Re≧40 is produced by transporting a cellulose acylate film having a substitution degree of acyl substituted for hydroxyl group of cellulose of 2.88 or higher, and subjecting the film to heat treatment at 160° C. or higher. | 01-08-2009 |
