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| Number | Title | Issue Date |
| 7442789 | Method and apparatus for alkaline saponification of polymer film The present invention provides a method for alkaline saponification of a polymer film, comprising the steps of: alkaline saponification of the polymer film with an alkaline solution; and washing away the alkaline solution from the alkali-saponified polymer film, whe... | 10/28/2008 |
| 7410680 | Retardation film made by using cellulose derivatives The present invention relates to a retardation film obtained by subjecting a film formed from a cellulose derivative to an orientation treatment, wherein a hydroxyl group of cellulose is substituted by at least one kind of aliphatic acyl group having 5 to 20 carbon ... | 08/12/2008 |
| 7244840 | Admixture, extrudable hydraulic composition and method for the selection of admixture A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20Â... | 07/17/2007 |
| 7208592 | Process for alkali saponification of cellulose ester film surface A process for alkali saponification of polymer film is disclosed. The process comprises the steps of applying solution of an alkali onto a polymer film having a temperature of not lower than room temperature, and washing away the alkaline solution from the film.... | 04/24/2007 |
| 7189464 | Cellulose acylate film and producing method thereof In a multi-layer structure of a cellulose acylate film, the averaged degree of acylation of surface layers is controlled in the range of 0.5 to 2.8 by mixing several sorts of cellulose acylates having different averaged degrees of acyation. One of the surface layers... | 03/13/2007 |
| 7166321 | Process for the preparation of an optical compensatory sheet comprising cellulose ester film, orientation layer, and optically anisotropic layer formed of liquid crystal molecules having a fixed alignment An optical compensatory sheet comprises a cellulose ester film, an orientation layer and an optically anisotropic layer formed of liquid crystal molecules in this order. Alignment of the liquid crystal molecules is fixed. An alkaline solution is coated on a surface ... | 01/23/2007 |
| 7151173 | Admixture, extrudable hydraulic composition and method for the selection of admixture A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20Â... | 12/19/2006 |
| 7122660 | Cellulose acetate and dope containing the same Using the dope containing the following cellulose acetate (1), (2), or (3), a film is prepared by the casting process: (1) a cellulose acetate having carboxyl groups binding to at least one member selected from the group consisting... | 10/17/2006 |
| 7078078 | Optical compensatory sheet comprising transparent support and optically anisotropic layer An optical compensatory sheet comprises a transparent support and an optically anisotropic layer. The optically anisotropic layer is formed from liquid crystal molecules and monomers having four or more double bonds. The monomers are polymerized to form a polymer in... | 07/18/2006 |
| 7064113 | Resin composition, method of molding the same, and method of recycling resin composition A resin composition, which comprises a biodegradable polymer and a biodegradable liquid crystalline polymer. The resin composition is useful for producing molded resin articles having good recyclability. ... | 06/20/2006 |
| 7026470 | Use of carboxymethyl cellulose acetate butyrate as a precoat or size for cellulosic man-made fiber boards A method for improving holdout on a coated, cellulosic substrate, such as a man-made fiber board. The process comprises the steps of applying an aqueous carboxymethyl cellulose acetate butyrate size composition to a man-made fiber substrate, forming a sized substrat... | 04/11/2006 |
| 7022837 | Cellulose ethers and method of preparing the same The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cell... | 04/04/2006 |
| 7005427 | Cellulose acylate solution for film products A cellulose acylate solution is used for producing a film in a solution casting method. Particles to be added to the cellulose acylate solution are silicon dioxide and surfaces of the particles are positively charged. After the particles are added to the solution, t... | 02/28/2006 |
| 6946519 | Organic-inorganic hybrid film, its manufacturing method, optical film, and polarizing film Disclosed are an organic-inorganic hybrid film comprising a cellulose derivative and a polycondensation product of a condensation polymerizable reactive metal compound, wherein the film contains a plasticizer in an amount of 1 to 20% by weight and its manufacturing ... | 09/20/2005 |
| 6921820 | Method for forming cellulose A method for forming II-type cellulose, which comprises introducing together a slurry having water and a I-type cellulose dispersed therein and water in the state of high temperature and high pressure to a tubular reactor (28) contacting the I-type cellulose ... | 07/26/2005 |
| 6914139 | Solution of cellulose acylate dissolved in mixed solvent of ketone and ester In a cellulose acylate solution, cellulose acylate is dissolved in an essentially non-chlorinated solvent. The essentially non-chlorinated solvent is a mixture of a ketone having a solubility parameter of 19 to 21 and an ester having a solubility parameter of 19 to ... | 07/05/2005 |
| 6683174 | Cellulose triacetates and methods for producing the cellulose triacetates The present invention provides a cellulose triacetate which exhibits a satisfactory filtration performance Thus, the present invention provides a cellulose triacetate whose occlusion constant (K) determined by the following method is 70 or less. Method: t... | 01/27/2004 |
| 6600034 | Method of producing cellulose polymers A method of making cellulose polymer solution comprises dissolving a cellulose polymer raw material in a chlorine-free organic solvent system under a high temperature and a high pressure condition belonging to the nearcritical or the supercritical region ... | 07/29/2003 |
| 6300493 | Method and compositions for modification of polysaccharide characteristics Methods and compositions are provided for the modification of polysaccharide structures using polysaccharidase binding or catalytic domains either alone or in tandem to modify the structure of polysaccharides. These methods and compositions are exemplifie... | 10/09/2001 |
| 6083582 | Cellulose fiber based compositions and film and the process for their manufacture A process and materials are described in which highly refined cellulose fibers are broken down into microfibers and further processed into compositions, films, coatings and solid materials which are biodegradable and even edible. The process for the forma... | 07/04/2000 |
| 5990304 | Cellulose acetate excellent in physical strength, and process for production thereof An object of the invention is to obtain cellulose acetate with improved physical properties, particularly film strength arid improved flexibility of the molded product. Cellulose acetate wherein average degree of acetylation is not less than 59%, viscosit... | 11/23/1999 |
| 5985951 | UV-curable nail coating formulations containing cellulose esters with ethylenically unsaturated pendant groups This invention relates to a composition of photopolymerizable coatings forming cosmetic films that are especially useful for human and animal nail coatings. The coating compositions are based on certain cellulose ester derivatives, which possess groups ca... | 11/16/1999 |
| 5981738 | UV curable cellulose esters The present invention relates to a modified cellulose ester containing unsaturated pendent groups which can be prepared by reacting a cellulose ester containing residual hydroxyl groups with, for example, maleic anhydride in acetic acid solvent with sodiu... | 11/09/1999 |
| 5981741 | Aminated acetate fiber Disclosed are aminated acetate fiber comprising acetylcellulose and one or more water-insoluble quaternary starch ether esters, said starch ether esters containing ester groups of formulae --O--CO--CH3 and/or --O--CO--C2 H5 | 11/09/1999 |
| 5977346 | Fatty acid ester of cellulose, cellulose diacetate and processes for the preparation thereof A fatty acid ester of cellulose having excellent transparency, filterability and spinnability in spite of its high content of mannose and xylose, wherein the total molar content of mannose and xylose accounts for at least 7% of that of glucose, mannose an... | 11/02/1999 |
| 5973139 | Carboxylated cellulose esters A process for preparing a carboxylated cellulose ester from oxidized cellulose is described. The carboxylated cellulose esters have improved solvent solubility and coating resin compatibility when compared to cellulose esters made from regular grade cellu... | 10/26/1999 |
| 5962677 | Cellulose acetate with high moldability and process for production thereof Cellulose acetate having a high moldability and low solution viscosity in spite of having a high average degree of polymerization is obtained. The low molecular weight components of cellulose acetate (e.g., CTA having average degree of acetylation of 59.0... | 10/05/1999 |
| 5928613 | Apparatus for acetylating cellulose In a production process of a cellulose acetate which comprises (a) a reduced pressure-acetylation step of acetylating a cellulose under a reduced pressure in the presence of sulfuric acid or other acidic catalyst, with distilling off a gaseous phase compo... | 07/27/1999 |
| 5929229 | Direct process for the production of cellulose esters The present invention relates to a process for preparing cellulose esters having a total DS/AGU of 0.1 to 3.0, said process consisting of contacting the following: (i) a cellulose material, (ii) a solubilizing amount of a solvent system comprising a carboxamid... | 07/27/1999 |
| 5919920 | Cellulose acetate with high moldability and process for production thereof Cellulose acetate having a high moldability and low solution viscosity in spite of having a high average degree of polymerization is obtained. The low molecular weight components of cellulose acetate (e.g., CTA having average degree of acetylation of 59.0... | 07/06/1999 |
| 5914397 | Cellulose acetate excellent in physical strength, and process for production thereof An object of the invention is to obtain cellulose acetate having improved physical properties, particularly film strength and improved flexibility of the molded product. Cellulose acetate having an average degree of acetylation of not less than 59%, visco... | 06/22/1999 |
| 5869646 | Method and apparatus for acetylating cellulose In a production process of a cellulose acetate which comprises (a) a reduced pressure-acetylation step of acetylating a cellulose under a reduced pressure in the presence of sulfuric acid or other acidic catalyst, with distilling off a gaseous phase compo... | 02/09/1999 |
| 5821358 | Methods and compositions for modification of polysaccharide characteristics Methods and compositions are provided for the modification of polysaccharide structures using polysaccharidase binding or catalytic domains either alone or in tandem to modify the structure of polysaccharides. These methods and compositions are exemplifie... | 10/13/1998 |
| 5821359 | Acetylation of lignocellulosic fibres The invention relates to a process for acetylation of lignocellulosic fibres (LF) using an acetylating agent comprising acetic anhydride at a temperature of above 140° C. and a pressure of 100-150 kPa wherein raw or substantially raw LFs are treated with... | 10/13/1998 |
| 5817381 | Cellulose fiber based compositions and film and the process for their manufacture A process and materials are described in which highly refined celleuloise fibers are broken down into microfibers and further processed into compositions, films. coatings and solid materials which are biodegradable and even edible. The process for the for... | 10/06/1998 |
| 5741901 | UV curable cellulose esters The present invention relates to a modified cellulose ester containing unsaturated pendent groups which can be prepared by reacting a cellulose ester containing residual hydroxyl groups with, for example, maleic anhydride in acetic acid solvent with sodiu... | 04/21/1998 |
| 5705631 | Laminar flow process of preparing cellulose diacetate fibers A laminar flow process for preparing cellulose diacetate fibers is disclosed. In the process, a precipitation-acid stream and an acid-dope stream are contacted in a zone having substantially laminar flow. The acid-dope stream is annularly disposed within ... | 01/06/1998 |
| 5705632 | Process for the preparation of cellulose acetate film A process for the preparation of a cellulose acetate film comprises the steps of: cooling a mixture of cellulose acetate and an organic solvent to -100° to -10° C.; warming the cooled mixture to 0° to 50° C. to dissolve the cellulose acetate in the or... | 01/06/1998 |
| 5674999 | Process for preparing readily dispersible water-soluble cellulosic polymers An improved process for surface treating water soluble cellulosic polymers with crosslinking agents to provide products which are more readily dispersible in cold water, and have longer viscosity delay times than can be achieved with polymers treated in l... | 10/07/1997 |
| 5663310 | Cellulose acetate solution and process for the preparation of the same A cellulose acetate solution has cellulose acetate in a solvent. The cellulose acetate has an average acetic acid content in the range of 58.0 to 62.5%. In the first embodiment of the invention, the solvent is a mixture of acetone and another organic solv... | 09/02/1997 |
