Class / Patent application number | Description | Number of patent applications / Date published |
429255000 | Natural or treated plant materials | 8 |
20090017385 | ALKALINE BATTERY SEPARATOR AND ALKALINE PRIMARY BATTERY - An alkaline battery separator comprising an alkali-resistance synthetic fiber, a fibrillated organic solvent-spun cellulose fiber having a Canadian standard freeness value of 10 to 280 ml, and a mercerized pulp having a Canadian standard freeness value of not less than 550 ml is prepared. In the separator, the proportion of the alkali-resistance synthetic fiber, the proportion of the fibrillated organic solvent-spun cellulose fiber, and the proportion of the mercerized pulp relative to the total amount of the separator are respectively 25 to 62% by mass, 5 to 25% by mass, and 33 to 50% by mass, provided that the total amount of the separator is 100% by mass. The alkali-resistance synthetic fiber may comprise a polyvinyl alcohol-series fiber having an average fiber fineness of not more than 1 dtex. The alkaline battery separator may further comprise a polyvinyl alcohol-series binder in a proportion of 3 to 20% by mass relative to the total amount of the separator. The alkaline battery separator of the present invention may have a shrinkage by the area of not more than 3.5% after immersing in an aqueous solution of potassium hydroxide having a concentration of 40% by mass at 80° C. for 24 hours and a stiffness strength of not less than 2 N. | 01-15-2009 |
20130288133 | POROUS MEMBRANE AND PROCESS FOR PREPARING THE SAME - The present invention relates to a porous membrane including cellulose fibers, wherein the cellulose fibers are obtained from a mixture of more than 50% by weight of (1) first raw material cellulose fibers having a surface area determined by congo red coloring of 250 m | 10-31-2013 |
20140045073 | POROUS MEMBRANE AND PROCESS FOR PREPARING THE SAME - The present invention relates to a porous membrane including cellulose fibers, wherein the surface area determined by congo red coloring of the re-dispersed cellulose fibers after the cellulose fibers of the porous membrane are re-dispersed in accordance with the re-dispersion method for normal paper specimens according to JIS P 8120 is from 100 to 300 m | 02-13-2014 |
20140335424 | Porous Separator for a Secondary Battery Including Cellulose Nanofibers and Method For Manufacturing Same - The present invention relates to a separator for secondary battery including cellulose nanofibers, and to a method for fabricating the same. The separator has a porous structure of micropores formed between the cellulose nanofibers. The porous structure has a porosity of 10 to 80% (v/v) and a pore size of 0.01 to 10 μm. The separator has a thickness of 5 to 30 μm. The separator has good properties in regards to thermal stability, dimensional stability, wettability, and electrochemical stability, and the fabrication process can be simplified to reduce the production cost. | 11-13-2014 |
20150064573 | Separator for Electrochemical Element, Process for Producing Separator and Electrochemical Element Using Separator - [Problem to be Solved] | 03-05-2015 |
20150093650 | BATTERY SEPARATOR - The present invention relates to a battery separator, comprising cellulosic fibers of the lyocell genus, wherein the R10-value, the R18-value and the hemicellulose content of the lyocell fibers is as follows:
| 04-02-2015 |
20150380703 | BATTERY SEPARATOR - The present invention relates to a battery separator, comprising fibers of the lyocell genus, wherein said lyocell fibers are mercerised. The present invention furthermore relates to novel lyocell fibers useful for battery separators, as well as batteries comprising the inventive battery separator. | 12-31-2015 |
20190148697 | SEPARATOR FOR ELECTROCHEMICAL ELEMENTS AND ELECTROCHEMICAL ELEMENT INCLUDING SEPARATOR FOR ELECTROCHEMICAL ELEMENTS | 05-16-2019 |