Patent application number | Description | Published |
20110067760 | AROMATIC POLYIMIDE FILM, LAMINATE AND SOLAR CELL - Disclosed is a polyimide film prepared from an aromatic tetracarboxylic acid component and an aromatic diamine component, which has a dimensional change from 25° C. to 500° C. within a range of from −0.3% to +0.6% based on the initial dimension at 25° C. The polyimide film may be used as a substrate for a CIS solar cell. | 03-24-2011 |
20110079277 | POLYIMIDE-METAL LAMINATE AND SOLAR CELL - A polyimide-metal laminate comprising a polyimide film and a metal layer for use as an electrode, which is formed on the side (Side B) of the polyimide film which was in contact with a support when producing a self-supporting film in the production of the polyimide film, is used to produce a CIS solar cell. | 04-07-2011 |
20110084419 | METHOD FOR PRODUCING AROMATIC POLYIMIDE FILM WHEREIN LINEAR EXPANSION COEFFICIENT IN TRANSVERSE DIRECTION IS LOWER THAN LINEAR EXPANSION COEFFICIENT IN MACHINE DIRECTION - An aromatic polyimide film having a TD linear expansion coefficient lower than that MD linear expansion coefficient is produced by an industrially advantageous process which is performed under such conditions that a self-supporting aromatic polyimide precursor film having a solvent content of 25-45 wt. % and an imidation ratio of 5-40% is prepared and stretched in the transverse direction under heating initially at 80-240° C. and the stretched self-supporting aromatic polyimide precursor film is subsequently converted to a self-supporting aromatic polyimide film by heating the precursor film at 350-580° C. | 04-14-2011 |
20120028061 | POLYIMIDE FILM FOR METALLIZING, METHOD FOR PRODUCING SAME, AND METAL-LAMINATED POLYIMIDE FILM - The present invention provides a polyimide film for metallizing, which has an anisotropic thermal expansion coefficient, and comprises a polyimide layer (b) and a polyimide layer (a) on one side or both sides of the polyimide layer (b); wherein
| 02-02-2012 |
20120034455 | POLYIMIDE FILM, METHOD FOR PRODUCING THE SAME, AND METAL-LAMINATED POLYIMIDE FILM - The present invention provides a polyimide film having an anisotropic thermal expansion coefficient, and comprising a polyimide layer (b) and a polyimide layer (a) on one side or both sides of the polyimide layer (b), wherein
| 02-09-2012 |
20120043691 | MULTILAYERED POLYIMIDE FILM - A multilayered polyimide film including a polyimide layer (b), and a pigment-containing polyimide layer (a) stacked on one surface or both surfaces of the polyimide layer (b), wherein the polyimide layer (b) is formed of a polyimide including an aromatic tetracarboxylic acid unit containing a 3,3′,4,4′-biphenyltetracarboxylic acid unit in an amount of 70 to 100 mol %, and an aromatic diamine unit containing a p-phenylenediamine unit in an amount of 70 to 100 mol %. | 02-23-2012 |
20150035199 | METHOD FOR PRODUCING AROMATIC POLYIMIDE FILM WHEREIN LINEAR EXPANSION COEFFICIENT IN TRANSVERSE DIRECTION IS LOWER THAN LINEAR EXPANSION COEFFICIENT IN MACHINE DIRECTION - An aromatic polyimide film having a TD linear expansion coefficient lower than that MD linear expansion coefficient is produced by an industrially advantageous process which is performed under such conditions that a self-supporting aromatic polyimide precursor film having a solvent content 25-45 wt % and an imidation ratio 5-40% is prepared and stretched in the transverse direction under heating initially at 80-240° C. and the stretched self-supporting aromatic polyimide precursor film is subsequently converted to a self-supporting aromatic polyimide film by heating the precursor film at 350-580° C. | 02-05-2015 |
Patent application number | Description | Published |
20120292800 | PROCESS AND EQUIPMENT FOR PRODUCTION OF POLYIMIDE FILM - Provided are a method and apparatus for the production of a polyimide film, which allow a polyimide film having physical properties with in-plane uniformity to be produced with high productivity. In the method for the production of a polyimide film, a solvent content of a self-supporting film is measured by infrared spectroscopy, and based on the measurement result, one or more kinds selected from a drying condition of a cast of a polyimide precursor solution, a post-heating condition of the self-supporting film, and an amount of extrusion of a polyimide precursor solution from a die are controlled. | 11-22-2012 |
20140023847 | POLYIMIDE FILM AND METAL LAMINATE USING SAME - A polyimide film having no foaming during heating or other problems, as well as a polyimide laminate-metal laminate in which the polyimide film and a metal layer are laminated. The polyimide film includes a polyimide layer (b), and a polyimide layer (a) laminated in contact with the polyimide layer (b), a side of the polyimide layer (b) which is not in contact with the polyimide layer (a) exhibits thermal fusion bondability, a side of the polyimide layer (a) which is not in contact with the polyimide layer (b) does not exhibit thermal fusion bondability, and the polyimide layer (a) includes a polyimide formed from a tetracarboxylic acid component containing 2,3,3′,4′-biphenyltetracarboxylic dianhydride and a diamine component. | 01-23-2014 |
20140058060 | POLYIMIDE FILM PRODUCTION METHOD, POLYIMIDE FILM PRODUCTION APPARATUS, AND POLYIMIDE FILM - A polyimide film which rarely undergoes the formation of bubbles, blisters or the like, even when heated to a high temperature; and a production method and a production apparatus for the polyimide film. The polyimide film production apparatus includes a support body, a cast furnace and a cure furnace, wherein the cure furnace is partitioned into multiple zones so that the temperature of a self-supporting film can be increased in a stepwise manner, and an infrared electric heater, which is disposed at a predetermined distance from the film, is arranged in a zone for heating the atmosphere of the self-supporting film to a temperature of 450° C. or higher on the upper surface side and/or the lower surface side of the self-supporting film. The polyimide production apparatus enables the production of a polyimide film which has a volatile content of 0.1 mass % or less after being heated at 450° C. for 20 minutes. | 02-27-2014 |
20140287218 | THERMALLY ADHESIVE POLYIMIDE FILM AND METHOD FOR PRODUCING SAME, AND POLYIMIDE METAL LAMINATE PRODUCED USING THERMALLY ADHESIVE POLYIMIDE FILM - A single-layered thermally adhesive polyimide film; a method for producing the thermally adhesive polyimide film; and a method for producing a polyimide metal laminate produced using the thermally adhesive polyimide film. The single-layer thermally adhesive polyimide film is produced by polymerizing a tetracarboxylic acid dianhydride component and a diamine component, wherein the tetracarboxylic acid dianhydride component includes 2,3,3′,4′-biphenyltetracarboxylic acid dianhydride and 3,3′,4,4′-biphenyltetracarboxylic acid dianhydride and the diamine component includes an aromatic diamine compound represented by the following formula (I) as a main component | 09-25-2014 |