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| Number | Title | Issue Date |
| 8092732 | Processing method of the natural cellulose fiber with feature for enhancing the capability of antifungi, antibacteria and deodorization The present invention provides a processing method of the natural cellulose fiber with feature for enhancing the capability of antifungi, antibacteria and deodorization. The procedure is that firstly modify and reduce the properties of the natural chitosan of high p... | 01/10/2012 |
| 7425289 | Process of making cellulose acetate tow In the manufacture of a fiber tow, particularly cellulose acetate tow, a stuffer box crimper has a pair of nip rollers, at least one, made of a solid ceramic material. ... | 09/16/2008 |
| 7250201 | Production method of cellulose film, cellulose film, protective film for polarizing plate, optical functional film, polarizing plate, and liquid crystal display A production method of cellulose film wherein cellulose film is produced by preparing a polymer solution through dissolving cellulose ester in a solvent containing a prescribed organic solvent as the main component, forming a filmy object from the prepared polymer s... | 07/31/2007 |
| 7214335 | Solution containing cellulose dissolved in N-methylmorpholine-N-oxide and high tenacity lyocell multifilament using the same This invention relates to a method of preparing cellulose solution which is homogeneous at relatively low temperature, in which a small amount of cellulose powder or polyvinylalcohol is dissolved in the liquid-state, concentrated N-methylmorpholine-N-oxide (hereinaf... | 05/08/2007 |
| 7158200 | Optical compensation sheet and liquid crystal display An optical compensation film used for a liquid crystal display comprising a support and an optically anisotropic layer is disclosed. The optically anisotropic layer is a layer on which orientation of the liquid crystalline compound is fixed and the support is an opt... | 01/02/2007 |
| 7148344 | Method for producing cellulose acetate film 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... | 12/12/2006 |
| 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 |
| 7081224 | Polymer film producing method A solution casting system has a tentering device, and produces polymer film of cellulose triacetate. Two web edge portions of the polymer film are sucked within a section from a downstream end of the tentering device to a first roller that the polymer film contacts ... | 07/25/2006 |
| 6974608 | Cellulose ester film, cellulose ester dope, protective film of polarizing plate and polarizing plate Disclosed is a cellulose ester film comprising a polymer prepared by polymerizing at least one ethylenically unsaturated monomer selected from vinyl esters, vinyl esters having a functional group, acrylic esters, and acrylic esters having a functional group, wherein... | 12/13/2005 |
| 6972102 | Method and device for continually producing an extrusion solution The invention relates to a method for continually producing an extrusion solution for producing cellulosed shaped bodies, such as fibres and films, according to the lyocell method. According to the inventive method, (a) a cellulose suspension is produced from cellul... | 12/06/2005 |
| 6929884 | Method for manufacture of films containing insoluble solids embedded in cellulose-based films A film which slowly releases solids is prepared by dissolving cellulose in a solvent such as an alkali metal salt, for example L1Cl in a polar solvent such as DMAC, dispersing the solid in the solution and gelling the solution with water to form a film. | 08/16/2005 |
| 6907885 | High efficiency cigarette filters having shaped micro cavity fibers impregnated with adsorbent or absorbent materials This invention is a highly efficient filter containing fibers that contain small particle size adsorbents/absorbents such as carbon and/or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highl... | 06/21/2005 |
| 6757116 | Disk biasing for manufacture of servo patterned media A method of manufacturing a patterned data/information storage and retrieval medium in the form of an annular disk having an outer diameter, a central opening defining an inner diameter, and opposed first and second major surfaces, the method including inserting a s... | 06/29/2004 |
| 6582645 | Method for producing cellulose acylate film A method for producing a cellulose acylate film is disclosed. The method comprises the steps of, casting dope containing cellulose acylate on a surface of a metal support, peeling off a web formed by casting the dope from the metal support, contacting sur... | 06/24/2003 |
| 6548660 | Producing method of cellulose polymer A producing method of a cellulose polymer powder is provided, which comprises dissolving a cellulose polymer by exposure to an organic solvent containing, as the main component, an ester-based solvent having from 2 to 8 carbon atoms, a ketone-based solven... | 04/15/2003 |
| 6368534 | Solution casting process This invention relates to a solution casting process capable of decreasing uneven coating of a functional layer upon applying the functional layer onto a film surface, which comprises casting a solution of polymer dissolved in organic solvent into a film ... | 04/09/2002 |
| 6316582 | Use of an alkoxylated polyamine surfactant as a viscose spin bath additive The present invention relates to a method of reducing the clogging of nozzles and slits and diminishing the formation of deposits in the spin bath system in the process of making viscose filamentary and film materials by using an alkoxylated polyamine sur... | 11/13/2001 |
| 6139785 | Cellulose ester composition The present invention provides a cellulose ester composition, containing 1 to 99% by weight of cellulose triacetate prepared by substituting hydroxyl groups of cellulose with acetyl and having a degree of substitution with acetyl, DSace, which satisfies t... | 10/31/2000 |
| 6019925 | Method of making cellulosic dialysis membrane A method for producing cellulosic dialysis membranes in the form of flat, tubular, or hollow fiber membranes by spinning a spinning solution of cellulose and/or modified cellulose, a tertiary amine oxide, and additional liquids and additives such as stabi... | 02/01/2000 |
| 5976440 | Cellulose diacetate spinning dope and a process for producing a cellulose diacetate fiber A spinning dope for the stable production of a cellulose diacetate fiber at a high productivity rate, such fiber being almost free from the occurrence of fluffs and excellent in strength and elongation properties. The spinning dope is a composition formed... | 11/02/1999 |
| 5811162 | Sheet-like or tubular food casing based on cellulose hydrate A food casing based on cellulose hydrate, which is preferably used as a sausage casing, in addition to cellulose hydrate, includes a copolymer having units of methyl vinyl ether and maleic acid and/or alkali metal maleate. It can additionally contain furt... | 09/22/1998 |
| 5783121 | Preparation of a polymer solution A preparation of a polymer solution comprising the steps of: mixing a polymer with a solvent to swell the polymer in the solvent; cooling the swelled mixture to a temperature of -100° to -10° C.; and then warming the cooled mixture to a temperature of 0... | 07/21/1998 |
| 5747125 | Fibrous composite cellulosic film and method A crosslinked cellulose composite film including a regenerated cellulose matrix containing a uniform dispersion of hemp fibers and a poly(ethylene oxide) plasticizer. A method for forming the film includes mixing a slurry of the hemp, poly(ethylene oxide)... | 05/05/1998 |
| 5733663 | Composite membrane and process for its production To produce a composite membrane, the solution of a polymer in a volatile organic solvent is spread on water, the solvent is allowed to evaporate, the polymer is crosslinked and the polymer film formed is transferred to a porous support membrane. The polym... | 03/31/1998 |
| 5688455 | Process for making a cellulose triacetate photographic film base A method of making a cellulose triacetate photographic film support by forming a dope solution of cellulose triacetate in a first solvent, passing the dope solution under pressure through a sheet forming die zone having an upper and lower surface and two ... | 11/18/1997 |
| 5686036 | Process for making a cellulose triacetate photographic film base The invention provides a method of making a cellulose triacetate photographic film base which comprises providing a casting composition of cellulose triacetate, plasticizer, and solvent having a cellulose triacetate and plasticizer concentration of from 3... | 11/11/1997 |
| 5656224 | Process for the production of a cellulose suspension The invention is concerned with a process for the production of a suspension of cellulose in a liquid, aqueous tertiary amine-oxide, wherein shredded cellulose is mixed with the liquid, aqueous tertiary amine-oxide, said process comprising: (A) contacting... | 08/12/1997 |
| 5626810 | Process for the preparation of cellulose solutions A process is disclosed for the preparation of a shapeable solution of cellulose in an aqueous tertiary amine-oxide from comminuted cellulose. The process includes introducing previously comminuted cellulose material into an aqueous solution of a tertiary ... | 05/06/1997 |
| 5553835 | Method for drying solvent based film Solvent based film is produced in an endless belt casting apparatus (10) in which, within initial compartments (46-52), flows of gas are directed through transversely elongated inlet channels (85i) to contact a layer (36') of polymer and solven... | 09/10/1996 |
| 5549861 | Process for the production of shaped structures of cellulose A process for the production of shaped structures of cellulose, in particular fibers of cellulose, by shaping and subsequent regeneration of water-soluble cellulose derivatives is described. The process employs water-soluble alcohols, water-soluble ketone... | 08/27/1996 |
| 5529737 | Process for making cellulose triacetate photographic film base A method of making a cellulose triacetate photographic film base which includes delivering a dope solution of from 15 to 35 wt % of cellulose triacetate in dichloromethane based on the total weight of the solution under a pressure of from 7 atmospheres to... | 06/25/1996 |
| 5527178 | Jet assembly A jet assembly for spinning cellulose fibres from a solution of cellulose in an amine oxide solvent in which the jet assembly includes a generally top-hat shaped spinnerette having a series of downwardly directed holes through the base of the spinnerette ... | 06/18/1996 |
| 5512231 | Processing cellulose acetate formed articles using supercritical fluid A process for preparing cellulose acetate articles such as fibers. The process includes the following steps: Cellulose acetate is dissolved in a solvent to form a solution, the solvent made up of from 5% to 50% by weight of carbon dioxide and from 95% to ... | 04/30/1996 |
| 5512230 | Process for making cellulose acetate fibers A method for spinning a cellulose acetate fiber having a low degree of substitution per anhydroglucose unit (DS/AGU) of the cellulose acetate is provided. The addition of 5 to 40 weight percent water to cellulose acetate(CA)/acetone spinning solutions (do... | 04/30/1996 |
| 5462801 | Filter Tow, method for the production thereof, as well as tobacco smoke filter element and method for its production A filter tow from cellulose acetate filaments and/or staple fibers is described on the surface of which an additive from cellulose chain-splitting enzymes is present, at least the surface of the filaments and staple fibers consisting of a cellulose acetat... | 10/31/1995 |
| 5419955 | Method for immobilizing superabsorbent polymer and products derived therefrom The present invention provides super absorbent materials in the form of sheets or fibers made from high melting polymers and having super absorbent polymer material dispersed uniformly throughout. The materials are capable of incorporating large amounts o... | 05/30/1995 |
| 5399304 | Microgravity formation of polymeric networks The present invention is directed to improving thermoplastic and cross-linked polymeric networks. The inventive method comprises forming the polymeric network under gravitational conditions comprising from about 10-6 to about 10-2 g.... | 03/21/1995 |
| 5314647 | Method of making cellulose ester photographic film base A method of making cellulose ester photographic film base employing microwave radiation for removing the final portion of solvent present in the film.... | 05/24/1994 |
| 5269996 | Process for the production of fine denier cellulose acetate fibers A method for producing ultra fine denier cellulose acetate fibers that entails spinning a spinning solution containing adequately high amounts of cellulose acetate in acetone wherein the cellulose acetate has a falling ball viscosity of 15 to 70 seconds w... | 12/14/1993 |
| 5262110 | Apparatus and method for spinning filaments Apparatus and method are disclosed for spinning filaments from a material such as cellulose acetate dope. The filaments are spun from a spinnerette at the top of a vertically elongated spinning cabinet. Gas is first directed parallel to the filaments as t... | 11/16/1993 |
