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| Number | Title | Issue Date |
| 6414105 | Aromatic polycarbodiimide and sheet thereof An aromatic polycarbodiimide comprising a structural unit represented by the following formula (I): ##STR1## where R is an organic group having 3 or more carbon atoms, and n is an integer of 2 to 300, and a polycarbodiimide solution, a polycarbodiimide ... | 07/02/2002 |
| 6414089 | Method of manufacturing polymer films having second order non-linear optical properties, polymer films, and non-linear optical element A method of manufacturing a polymer film having second order non-linear optical properties which has excellent stability of orientated molecules and does not become disorientated, and a polymer film and a non-linear optical element are provided. A polymer... | 07/02/2002 |
| 6406741 | Method of making a polyimide layer containing fluorinated carbon material A method of making a polyimide layer containing fluorinated carbon therein includes subjecting a layer comprised of a polyimide precursor material and the fluorinated carbon to a first heating at a temperature less than about 400° C. for at least about 1... | 06/18/2002 |
| 6403213 | Highly filled undercoat for non-stick finish The invention relates to a composition applicable as a undercoat for a non-stick coating on a substrate, comprising (a) inorganic filler of ceramic particles, the particles having an average particle size of 1 micrometer or less and an aspect ratio of not... | 06/11/2002 |
| 6395399 | Flexible printed substrate A flexible printed substrate is constituted of metallic foil and provided thereon a polyimide layer which is produced by forming a film of a polyamic acid varnish on the metallic foil, followed by imidating. The polyimide layer has a linear expansion coef... | 05/28/2002 |
| 6395391 | Adhesive tape for electronic parts An adhesive tape for electronic parts which comprises a metal substrate and an adhesive layer A and an adhesive layer B and an adhesive layer C laminated in order wherein said adhesive A comprises a polyimide consisting of 100-20% by mol of the repeating ... | 05/28/2002 |
| 6395386 | Clear, high-barrier polymer-platelet composite multilayer structures This invention relates to novel multilayer formed articles including, but not limited to containers such as bottles, tubes, pipes, preforms and films (including oriented films such as biaxially oriented) comprising a melt processible resin having disperse... | 05/28/2002 |
| 6393190 | Chromophores for polymeric thin films and optical waveguides and devices comprising the same The present invention is directed to chromophores having novel electron withdrawing groups and novel bivalent cyclic bridges and to optical waveguides and optical devices having polymeric thin films which contain the novel chromophores.... | 05/21/2002 |
| 6392004 | Polyimides for high-frequency applications An element of a gigahertz electronic device is provided comprising a polyimide selected to have an imide equivalent weight of 375 or greater. The polyimide preferably has a dielectric loss at 12.8 GHz of 0.009 or less and a Tg of 260° C. or greater. Such... | 05/21/2002 |
| 6391419 | Magnetic recording medium A magnetic recording medium, comprising a magnetic layer containing a ferromagnetic metal thin film having micro-size projections on surface thereof and formed by vacuum film forming method and provided at least on one side of a nonmagnetic substrate, a c... | 05/21/2002 |
| 6383578 | Polyimide angularity enhancement layer An angularity enhancement layer in a liquid crystal display, which display comprises a liquid crystal cell, wherein the angularity enhancement layer includes a negative birefringent polyimide layer comprising a plurality of structural units having pendant... | 05/07/2002 |
| 6379809 | Thermally stable, piezoelectric and pyroelectric polymeric substrates and method relating thereto A thermally stable, piezoelectric and pyroelectric polymeric substrate was prepared. This thermally stable, piezoelectric and pyroelectric polymeric substrate may be used to prepare electromechanical transducers, thermomechanical transducers, acceleromete... | 04/30/2002 |
| 6379784 | Aromatic polyimide laminate An aromatic polyimide laminate composed of an aromatic polyimide composite film, a metal film, and a release film is disclosed. The aromatic polyimide composite film is composed of an aromatic polyimide substrate film and two thermoplastic aromatic polyim... | 04/30/2002 |
| 6372358 | Covercoat composition for electronic components A covercoat composition for electronic components that has improved performance to environmental and processing exposure. The covercoat composition has 15-30 wt. % of polyamide-imide, a polytetrafluoroethylene present in an amount up to 20 wt. % and a sil... | 04/16/2002 |
| 6368716 | Flame retardant adhesive composition and laminates This invention is directed to an adhesive composition comprising: A. 80-98% by weight, based upon the total amount of adhesive dry solids, of at least one latex copolymer comprising: (1) 20-55% by weight, based upon the weight of the copolymer, of at least one... | 04/09/2002 |
| 6362359 | One-component thermoset coating compositions The present invention relates to compounds containing modified hydrazide groups and corresponding to formula I ##STR1## wherein R represents the residue obtained by removing the isocyanate groups from a monomeric polyisocyanate, a polyisocyanate adduct or... | 03/26/2002 |
| 6359107 | Composition of and method for making high performance resins for infusion and transfer molding processes A composition of and method for making high performance imide resins that are processable by resin transfer molding (RTM) and resin infusion (RI) techniques were developed. Materials with a combination of properties, making them particularly useful for th... | 03/19/2002 |
| 6355357 | Flexible printed board, polyamic acid and polyamic acid varnish containing same A flexible printed board, in which a polyimide resulting from the imidation of a polyamic acid obtained by the addition polymerization of diamines and acid dianhydrides is formed as an insulating layer on a metal foil, is characterized in that the diamine... | 03/12/2002 |
| 6352750 | Seamless tubular electrically-semiconductive aromatic polymide film and process for producing the same The present invention provides an seamless tubular electrically-semiconductive film excellent in heat resistance, chemical resistance and mechanical property with excellent electrical resistance properties being applied thereto. The seamless tubular ... | 03/05/2002 |
| 6350844 | Polyimide film and electric/electronic equipment bases with the use thereof A polyimide film having sufficiently excellent characteristics such as a sufficiently high elastic modulus, a low water absorption, a small coefficient of moisture-absorption expansion, a small coefficient of linear expansion and a high dimensional stabil... | 02/26/2002 |
| 6348245 | Polymide photo alignment film from 3,3',4,4'-benzophenone tetracarboxylic dianhydride and ortho-substituted aromatic diamines for liquid crystal displays The present invention relates to polyimide photo alignment films for liquid crystal display devices comprising an aromatic tetracarboxylic dianhydride component containing 3,3',4,4'-benzophenone tetracarboxylic dianhydride and an aromatic diamine componen... | 02/19/2002 |
| 6346310 | Magnetic recording medium Disclosed is a magnetic recording medium comprising a magnetic layer on a surface of a flexible support and a backcoat layer on the opposite surface, characterized in that the backcoat layer comprises a granulated oxide consisting of titanium oxide, ... | 02/12/2002 |
| 6346298 | Flexible board A flexible board comprises metal foil 1 and provided thereon a laminated polyimide-based resin layer 2 of a three-layer structure comprising a first polyimide-based resin layer 2a, a second polyimide-based resin layer 2b, and a third polyimide-based resin... | 02/12/2002 |
| 6340518 | Flexible metal-clad laminates and preparation of the same A flexible metal foil laminate sheet wherein a polyimide layer comprises a polyimide laminate having a three-layer structure in which thermoplastic polyimide layers are formed on both the surfaces of a polyimide film; metal foil layers are heated and pres... | 01/22/2002 |
| 6335416 | Polyimide film and process for producing the same A polyimide film, which is produced from polyamide acid prepared through the reaction of p-phenylenebis(trimellitic acid monoester anhydride), oxydiphthalic acid dianhydride, p-phenylenediamine, and 4,4'-diaminodiphenylether in an organic solvent, and whi... | 01/01/2002 |
| 6319597 | Polyimide composite film A polyimide composite film favorably employable for preparing a heat-resistant metal foil/polyimide film composite is composed of a polyimide substrate showing a thermal expansion coefficient of 1×10-5 to 2×10-5 cm/° C. in a tempe... | 11/20/2001 |
| 6316574 | Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display ... | 11/13/2001 |
| 6316084 | Transparent abrasion-resistant coatings, magnetic coatings, electrically and thermally conductive coatings, and UV absorbing coatings on solid substrates Abrasion and scratch protective coatings magnetic coatings, electrically and thermally conducting coatings, and UV absorbing coatings are provided by electrostatic self-assembly (ESA) of one layer of an organic or polymer molecule and one layer of inorgan... | 11/13/2001 |
| 6313258 | Aromatic polycarbodiimide and films thereof An aromatic polycarbodiimide having a specified structural unit is disclosed. The aromatic polycarbodiimide can give films, moldings, adhesives and the like each having excellent characteristics such as high heat resistance, high dimensional stability, hi... | 11/06/2001 |
| 6303230 | Laminates This invention relates to laminates in which a layer of polyimide precursors and a layer of photosensitive resins are formed one on top of another on an electric conductor such as a stainless steel foil and also to laminates consisting of a stainless stee... | 10/16/2001 |
| 6296946 | Plastic substrate and method of manufacturing the same, and ink jet printer head and method of manufacturing the same There is provided a plastic base material having a reformed layer 2 formed on a plastic substrate 1 by reforming the surface layer thereof into a component containing fluorine at the ratio of the number of fluorine atoms to the number of carbon atoms, F/C... | 10/02/2001 |
| 6294639 | Liquid crystal aligning agent The present invention relates to a treating agent for liquid crystal alignment, which comprises a polyamic acid compound having a reduced viscosity of from 0.05 to 5.0 dl/g (in N-methylpyrrolidone at a temperature of 30° C. at a concentration of 0.5 g/dl... | 09/25/2001 |
| 6294257 | Conductive elastomer film, method for production thereof, and conductive elastomer composition An electrically conductive elastomer film comprising (i) a thermoplastic elastomer and (ii) 5 to 100 parts by weight, based on 100 parts by weight of the thermoplastic elastomer, of an electrically conductive filler, and having a volume resistance of 0.1 ... | 09/25/2001 |
| 6288209 | Method to prepare processable polyimides with reactive endogroups using 1,3-bis(3-aminophenoxy)benzene Polyimide copolymers were obtained containing 1,3-bis(3-aminophenoxy)benzene (APB) and other diamines and dianhydrides and terminating with the appropriate amount of reactive endcapper. The reactive endcappers studied include but should not be limited to ... | 09/11/2001 |
| 6281324 | Semiconductive belt A semiconductive belt comprising a polyimide film having a volume resistivity of 109 Ωcm to 1016 Ωcm and a surface resistivity of 1010 Ω to 1017 Ω at 25° C. and 60% RH, wherein the amount of change of the s... | 08/28/2001 |
| 6281323 | Terminal-modified imide oligomers and cured products thereof Terminal-modified imide oligomers with an inherent viscosity of 0.05-1 obtained by reacting 2,3,3',4'-biphenyltetracarboxylic dianhydride, an aromatic diamine compound and 4-(2-phenylethynyl)phthalic anhydride, and their cured products. There are provided... | 08/28/2001 |
| 6277495 | Polyimide film, a method for its manufacture and a polyimide film containing metal laminated plate A polyimide film of birefringence less than 0.01 is formed by drawing a copolymerized polyimide comprising a block component and a random component which are molecularly bonded, wherein the block component of copolymerized polyimide comprises an aromatic ... | 08/21/2001 |
| 6274695 | Aligning agent for liquid crystal The present invention relates to a treating agent for liquid crystal alignment, which is an agent for liquid crystal alignment to be used for a method in which polarized ultraviolet rays or electron rays are irradiated on a polymer thin film formed on a s... | 08/14/2001 |
| 6268033 | Heat-resisting adhesive composition and adhesive tapes for electronic parts A heat resisting adhesive composition for electronic parts and adhesive tapes of the present invention comprises a resin mixture of (A) 100 parts by weight of a polyimide comprising 100-30% by mol of at least one of the repeating units represented by the ... | 07/31/2001 |
| 6265042 | Adhesive tape for electronic parts An adhesive tape for electronic parts of the present invention is characterized by comprising a heat resisting film and an adhesive layer provided on at least a side of said heat resisting film, said adhesive layer contains at least a polyimide comprising... | 07/24/2001 |
