| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 264204000 | Solidifying by evaporation of liquid solvent or liquid carrier | 13 |
| 20080290552 | MICROPOROUS POLYOLEFIN FILM - A microporous polyolefin film which comprises 5 to 95 wt. % polyethylene (A) having a viscosity-average molecular weight (Mv) of 2,000,000 or higher, a first-melting-peak signal height as determined by DSC (differential scanning calorimetry) of 3.0 mW/mg or higher, a specific surface area of 0.7 m | 11-27-2008 |
| 20090008816 | METHOD FOR PRODUCING MICROPOROUS POLYOLEFIN MEMBRANE AND MICROPOROUS MEMBRANE - A microporous polyolefin membrane having excellent compression resistance is obtained by stretching a gel molding comprising a polyolefin and a membrane-forming solvent, removing the membrane-forming solvent, and stretching the resultant membrane again at least uniaxially at a speed of 3%/second or more at a temperature equal to or lower than the crystal dispersion temperature +20° C. | 01-08-2009 |
| 20090085244 | METHOD FOR REMOVING SOLVENT FROM POLYMER SOLUTION - A dope containing a TAC and solvent is prepared in a dope producing apparatus. In a case where a new dope having components different from that of the dope described above is produced, a controlling device performs controlling such that an operation of each pump is stopped, each valve is set to a closing position, and a hopper stops supplying the TAC. Thereafter, a washing liquid is introduced into the respective devices of the dope producing apparatus. The dope remained in the respective devices are discharged as a waste liquid together with the washing liquid. The waste liquid is heated in dry gas until a liquid level of the waste liquid turns into a falling-rate drying state in a dry heating chamber provided in a solvent removing device. In a wet heating chamber, the waste liquid is heated in wet gas. | 04-02-2009 |
| 20110018163 | SPINNING CELL FOR SYNTHETIC FIBER - Included is a spinning cell for a synthetic fiber such as spandex. The spinning cell includes a top closure which reduces or eliminates solvent vapor transfer, where solvent vapor process gas(es) may leave the cell and room air may be introduced into the spinning cell. A bottom closure device may also be included. | 01-27-2011 |
| 264205000 | Synthetic resin containing spinning solutions | 8 |
| 20080284055 | Process for forming uniformly distributed material - A fluidized mixture is issued from a nozzle comprising a fan jet at the outlet, causing the mixture to spread as it is issued. The issued material is collected on a moving collection surface located a distance of between 0.25 and 13 cm from the outlet of the nozzle, prior to the onset of large scale turbulence in the fluid jet. The resulting product has good basis weight uniformity. | 11-20-2008 |
| 20090160082 | Multistage draw with relaxation step - The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and quenched, the fiber is placed in contact with a conditioning solution comprising concentrations of solvent, salt, and water. The conditioning solution acts upon the fiber to plasticize the fiber prior to being drawn. The conditioning solution has concentrations of solvent, salt, and water so that the fiber is plasticized to the extent necessary for drawing but does not plasticize the fiber to such an extent as to re-dissolve the fiber into a polymeric solution. A heat-treated fiber manufactured from this process has improved shrinkage and can be colored to darker shades. | 06-25-2009 |
| 20090295019 | Polymer gel-processing techniques and high modulus products - The present invention provides polymer gel-processing techniques and polymer articles of high modulus. | 12-03-2009 |
| 20110260357 | ROTARY PROCESS FOR FORMING UNIFORM MATERIAL - A thin, uniform membrane comprising polymeric fibrils or a combination of fibrils and particles, wherein the fibrils have randomly convoluted cross-sections, and a process for making the membrane are disclosed. The membrane may be on the surface of a substrate as part of a composite sheet, or as a stand-alone structure. | 10-27-2011 |
| 20130241104 | PROCESS FOR SPINNING UHMWPE, UHMWPE MULTIFILAMENT YARNS PRODUCED THEREOF AND THEIR USE - Gel-spinning processes for producing a high tensile strength ultra high molecular weight polyethylene (UHMWPE) multifilament yarn comprising ultra-low dtex filaments, include applying a draw ratio DR | 09-19-2013 |
| 20130328234 | POLYTITANIC ACID ESTERS AND USE THEREOF TO PRODUCE IMPLANTABLE, OPTIONALLY ABSORBABLE FIBERS - The invention relates to polytitanic acid esters having linear cross-linking structures, obtainable by reacting a titanium compound that is soluble in an alcohol, in water or in a mixture of water and alcohol and that has the composition (I) | 12-12-2013 |
| 20150137415 | FILTRATION MATERIALS USING FIBER BLENDS THAT CONTAIN STRATEGICALLY SHAPED FIBERS AND/OR CHARGE CONTROL AGENTS - A filtration material comprising a blend of polypropylene and acrylic fibers of round, flat, dog bone, oval or kidney bean shape in any size from 0.08 to 3.3 Dtex. A preferred blend contains about 50 weight percent polypropylene fibers and about 50 weight percent acrylic fibers. The fibers can be blended ranging from 90:10 to 10:90 polypropylene to acrylic. The shape contains 25 weight percent round, flat, oval, dog bone and kidney bean shapes. The fiber blend contains 25 weight percent of at least one size between 0.08 and 3.3 Dtex. Electret fibers incorporated within these blends have 0.02 to 33 weight percent of a charge control agent. These fibers can be used in producing electret material by corona or triboelectric charging methods. | 05-21-2015 |
| 264206000 | Polyacrylonitrile | 1 |
| 20160376728 | EXTRUSION HEAD FOR GENERATING FILAMENTS, EXTRUSION INSTALLATION AND METHOD USING SAID EXTRUSION HEAD - The present invention relates to an extrusion head for generating filaments, extrusion installation and method using said extrusion head, the extrusion head comprising an inlet for the introduction by pressure of a solvent and polymer solution, and an extrusion plate provided with extrusion nozzles configured for forming filaments from the solvent and polymer solution, where the inlet is in fluid communication with a laminar chamber through which the solvent and polymer solution circulates to a peripheral chamber from which it is radially distributed into a central chamber in which the extrusion plate is arranged, and where the laminar chamber is in fluid communication with an excess solvent outlet, and the central chamber is in fluid communication with an excess solution outlet. | 12-29-2016 |
| 264207000 | Cellulose derivative | 1 |
| 20090166916 | 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 polymer material to nanometer scale; secondly dunk the chitosan into the syrup-like mixture of wood pulp and NMMO solvent to yield quasi-dope; thirdly dehydrate the quasi-dope of paste mixture to form the mud-like dope; fourthly spin the dope by dryjet wet spinning method; fifthly regenerate the filament in coagulation bath, water rinse and dry; finally water rinse, dry, apply the lubricant to finish. The water soluble chitosan, which has been treated by property modification and reduced to nanometer scale, can effectively and completely solve in the cellulose of low DP to offer wider extent of selection in the DP and better flexibility of adding percentage in content of modified chitosan. | 07-02-2009 |
