| Patent application number | Description | Published |
|---|
| 20080199698 | Method for producing liquid crystalline polyester fiber - The present invention provides a method for producing a liquid crystalline polyester fiber, the method comprising the steps of discharging an electrically charged solution comprising a liquid crystalline polyester, a fiber-forming polymer and a solvent from a container; and drawing the charged solution by electrical attraction in an electrical field generated between the solution and an electrically charged collecting means having the opposite charge of the solution, while evaporating at least a portion of the solvent to form a liquid crystalline polyester fiber. The fiber obtained in the present invention has a small average fiber diameter and can be made into a thin fiber cloth with high density. | 08-21-2008 |
| 20090047515 | Method for producing polyethersulfone fiber - The present invention provides a method for producing a polyethersulfone fiber, the method comprising the steps of discharging an electrically charged solution comprising a polyethersulfone and a solvent from a container; and drawing the charged solution by electrical attraction in an electrical field generated between the solution and an electrically charged collecting means having the opposite charge of the solution, while evaporating at least a portion of the solvent to form a polyethersulfone fiber. The fiber obtained in the present invention has a small average fiber diameter and can be made into a thin fiber cloth. | 02-19-2009 |
| 20090163106 | LIQUID CRYSTAL POLYESTER FIBER, METHOD FOR PRODUCING THE SAME, AND USE OF THE SAME - The present invention provides a method for producing a liquid crystal polyester fiber, the method comprising a step of spinning a liquid crystal polyester that has a glass transition temperature and a melting point, both observed by differential scanning calorimetry, and that has a flow initiation temperature of 250° C. or higher, followed by a heat treatment at 230° C. or lower. Even though the heat treatment is conducted at a low temperature, the obtained liquid crystal polyester fiber has a high strength. | 06-25-2009 |
| 20100041855 | Polyester for producing fiber, and fiber and non-woven fabric using the same - The present invention provides a liquid-crystalline polyester having a structural unit represented by the formula (i), a structural unit represented by the formula (ii) and a structural unit represented by the formula (iii): | 02-18-2010 |
| 20100216681 | CLEANING COMPOSITION AND CLEANING METHOD FOR LIQUID CRYSTALLINE POLYESTER PRODUCTION DEVICE USING THE SAME - The present invention provides a cleaning composition used for cleaning a device for producing a liquid crystalline polyester, the composition comprising (A) glycols, (B) amines and (C) a compound selected from the group consisting of cyclic esters, amides and sulfoxides, wherein the content of the component (B) is 5 to 40% by weight and the content of the component (C) is 5 to 30% by weight, both being with respect to the total weight of the cleaning composition. | 08-26-2010 |
| 20120152823 | AROMATIC POLYSULFONE RESIN POROUS MEMBRANE - The present invention relates to a porous membrane which contains aromatic polysulfone resin that has a reduced viscosity of 0.56-0.78 dL/g, and a hydrophilic polymer. | 06-21-2012 |
| 20120164447 | Liquid Crystal Polyester Porous Film - An object of the present invention is to provide a porous membrane having excellent heat resistance and acid resistance. A porous membrane is constituted by a liquid crystal polyester and a polymer other than the liquid crystal polyester. A liquid crystal polyester having a reduced viscosity of 0.40 dL/g or more is used as the liquid crystal polyester. A polymer having a reduced viscosity of 0.40 dL/g or more is used as the polymer other than the liquid crystal polyester. The content of the polymer other than the liquid crystal polyester is adjusted from 10 to 40 parts by mass based on 100 parts by mass of the liquid crystal polyester. | 06-28-2012 |
| 20120253060 | METHOD FOR PRODUCING LIQUID CRYSTAL POLYESTER - Disclosed is a method for producing a liquid crystal polyester, which includes the steps of: | 10-04-2012 |
