Carboxylic Acid Contains At Least Four Carboxylic Acid Groups Or Is A Derivative Of A Carboxylic Acid Containing At Least Four Carboxylic Groups Patents (Class 528/353)
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Patent number: 8859186Abstract: A polyimide precursor and a polyimide precursor resin composition, the polyimide precursor having repeating units represented by formula (1) and a photosensitive resin composition comprising the polyimide precursor and a photoacid generator or photobase generator: where R1 is a tetravalent organic group; R2 is a divalent organic group; R1s may be the same or different from each other and R2s may be the same or different from each other in the repeating units; R3 and R4 respectively represent a monovalent organic group having a structure represented by formula (2) and may be the same or different from each other; and R3s and R4s in the repeating units may be the same or different from each other, respectively. R5, R6, R7 and R8 are as described in the specification.Type: GrantFiled: July 25, 2011Date of Patent: October 14, 2014Assignee: Dai Nippon Printing Co., Ltd.Inventor: Katsuya Sakayori
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Patent number: 8859715Abstract: A polyimide polymer solution, a polyimide polymer, a transparent film, a display device and a solar cell are provided. The polyimide polymer has at least one of a repeating unit of formula (D) and a repeating unit of formula (J) and at least one of a repeating unit of formula (Q) and a repeating unit of formula (T). One of B and B? is cyclo-aliphatic compound, and the other is aromatic compound, a molar mass ratio of the cyclo-aliphatic compound to the aromatic compound is 1˜4, A and A? are identical or different aromatic diamines, and at least one of A and A? is aromatic diamine with ether groups, and A could be the same as or different from A?.Type: GrantFiled: December 22, 2011Date of Patent: October 14, 2014Assignee: Industrial Technology Research InstituteInventors: Chyi-Ming Leu, Chih-Cheng Lin, Chi-Fu Tseng, Hsueh-Yi Liao
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Patent number: 8846852Abstract: The present invention provides a polyimide film which is both outstandingly transparent and highly heat resistance, and which can be usefully employed as a transparent electrically conductive film, a TFT substrate, a flexible printed circuit substrate, and the like.Type: GrantFiled: December 30, 2009Date of Patent: September 30, 2014Assignee: Kolon Industries, Inc.Inventors: Young Han Jeong, Han Moon Cho, Hyo Jun Park
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Publication number: 20140287218Abstract: 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 wherein X is O, CO, C(CH3)2, CH2, SO2, S, or a direct bond, and in cases of two or more modes of bonding, each is the same or different; and n is an integer of 0 to 4.Type: ApplicationFiled: August 17, 2012Publication date: September 25, 2014Applicant: UBE INDUSTRIES, LTD.Inventors: Takuro Kochiyama, Keigo Nagao, Takeshi Uekido, Hideo Arihara
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Publication number: 20140275311Abstract: Disclosed are salt compositions of lysinol and dicarboxylic acids; and lysinol derived polymers including polyamide, polyimide, polyurea, cross-linked polyurea comprising urethane linkages, polyurea foams, cross-linked polyurea foams, and lysinol-epoxy thermoset.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: DAVID N. MARKS, KENNETH GENE MOLOY, MARK A. SCIALDONE, MANXUE WANG
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Publication number: 20140255710Abstract: Disclosed are a polyimide precursor for obtaining a polyimide film having excellent adhesiveness to metals and improved transmittance in the UV-visible range, a polyimide in which the polyimide precursor is used, a polyimide film in which the polyimide is used, and a method for manufacturing triazine compound used for manufacturing these. The polyimide precursor contains a structural unit represented by general formula (I): in which A is a tetravalent aromatic group or aliphatic group and B is a divalent aromatic group, wherein B in general formula (I) comprises a triazine moiety represented by following formula (B1): in which R1 denotes hydrogen or alkyl or aryl having 1 to 12 carbon atoms, and R2 denotes hydrogen or alkyl or aryl having 1 to 12 carbon atoms.Type: ApplicationFiled: February 21, 2013Publication date: September 11, 2014Applicants: NATIONAL UNIVERSITY CORPORATION IWATE UNIVERSITY, UBE INDUSTRIES, LTD.Inventors: Yoshiyuki Oishi, Nobuharu Hisano, Shin-ichiro Kohama, Taizou Murakami
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Patent number: 8829153Abstract: To provide a polyamic acid ester-containing polyimide precursor composition having a good storage stability, from which a polyimide film having a high imidization degree and excellent adhesion to an inorganic substrate can be obtained. A polyimide precursor composition comprising a polyamic acid ester, a thermal imidization accelerator and a solvent, wherein the thermal imidization accelerator is a compound which has a carboxy group and an amino group or an imino group which is deprotected by heat to show basicity, and which will not accelerate the imidization of the polyamic acid ester before the protecting group leaves, and a polyimide precursor composition containing a silane coupling agent.Type: GrantFiled: April 1, 2010Date of Patent: September 9, 2014Assignee: Nissan Chemical Industries, Ltd.Inventors: Naoki Sakumoto, Masato Nagao, Yuho Noguchi
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Publication number: 20140249244Abstract: The present invention relates to polymer, homo- or copolymer or oligomer for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, comprising a main chain and a side chain, wherein the side chain and/or main chain comprises a polar group, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).Type: ApplicationFiled: September 28, 2012Publication date: September 4, 2014Applicant: ROLIC AGInventors: Sabrina Chappellet, Jean-Francois Eckert, Mohammed Ibn-Elhaj, Frederic Lincker, Satish Palika, Hubert Seiberle, Qian Tang, Eva Veenstra
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Publication number: 20140248445Abstract: A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films 109 comprises photoreactive polyimide and/or polyamic acid provided with an alignment control ability by irradiation of substantially linearly polarized light.Type: ApplicationFiled: May 9, 2014Publication date: September 4, 2014Applicants: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Yasushi TOMIOKA, Hidetoshi ABE, Katsumi KONDO
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Patent number: 8821617Abstract: Disclosed herein are a polyimide-polybenzoxazole copolymer, a method for preparing thereof and a gas separation membrane comprising the same. More specifically, provided are a polyimide-polybenzoxazole copolymer simply prepared through thermal-rearrangement performed by thermally treating a polyimide-poly (hydroxyimide) copolymer as a precursor, a method for preparing the same, and a gas separation membrane comprising the same. The copolymer shows superior gas permeability and gas selectivity, thus being suitable for use in gas separation membranes in various forms such as films, fibers or hollow fibers. The gas separation membrane thus prepared can advantageously endure even harsh conditions such as long operation time acidic conditions and high humidity due to the rigid polymer backbone present in the copolymer.Type: GrantFiled: March 6, 2008Date of Patent: September 2, 2014Assignee: Industry-University Cooperation Foundation, Hanyang UniversityInventors: Young Moo Lee, Jae-Eun Lee, Chul-Ho Jung, Ho-Bum Park
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Patent number: 8816017Abstract: Disclosed is a process for producing a polyamic acid solution by reacting a diamine component consisting essentially of 20 mol % to 80 mol % of p-phenylenediamine and 80 mol % to 20 mol % of diaminodiphenyl ether with a tetracarboxylic acid component consisting essentially of 10 mol % to 60 mol % of 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 90 mol % to 40 mol % of 3,3?,4,4?-biphenyltetracarboxylic dianhydride in a solvent, comprising: a first step in which a diamine component is reacted with a molar excess of a tetracarboxylic acid component in a solvent containing more than ? mole of water per mole of the tetracarboxylic acid component, whereby preparing a polyamic acid solution; and a second step in which a diamine component, or a diamine component and a tetracarboxylic acid component are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diaType: GrantFiled: December 1, 2008Date of Patent: August 26, 2014Assignee: UBE Industries, Ltd.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tooru Murakami
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Patent number: 8809688Abstract: Disclosed are a polyamic acid solution, a polyimide resin prepared by imidization of the polyamic acid solution, a flexible metal clad laminate using the polyimide resin, and a printed circuit board including the flexible metal clad laminate, wherein the polyamic acid solution includes (a) 3,3?,4,4?-biphenyltetracarboxylic acid dianhydride (BPDA), and pyromellitic dianhydride (PMDA) as aromatic tetracarboxylic acid dianhydride; (b) at least one aromatic diamine; (c) an organic solvent; and (d) an inorganic filler.Type: GrantFiled: April 2, 2010Date of Patent: August 19, 2014Assignee: Doosan CorporationInventors: Yang Seob Kim, Won Kyum Kim, Hyung Wan Kim, Dong Bo Yang
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Publication number: 20140224318Abstract: A transparent electro-conductive laminate comprising: a substrate film made of a polyimide; and a thin film made of an electro-conductive material and stacked on the substrate film, wherein the polyimide is a polyimide containing at least one repeating unit represented by the following general formula (1): [in the formula (1), R1, R2, and R3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, R4 represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12], having a glass transition temperature of 350° C. to 450° C., and having a linear expansion coefficient of 30 ppm/° C. or less, the linear expansion coefficient being determined by measuring change in length under a nitrogen atmosphere and under a condition of a rate of temperature rise of 5° C./minute in a temperature range from 50° C. to 200° C.Type: ApplicationFiled: August 3, 2012Publication date: August 14, 2014Inventors: Shinichi Komatsu, Akira Shiibashi, Rieko Fujishiro, Ryuichi Ueno, Takaya Matsumoto
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Publication number: 20140228513Abstract: The present invention relates to thermoplastic polyimides and to the synthesis thereof. The invention relates in particular to a method for manufacturing semi-aromatic thermoplastic polyimides by means of the solid-state polymerization of a solid ammonium carboxylate salt formed from an aliphatic diamine and an aromatic tetracarboxylic acid, thereby enabling powders having controlled particle sizes to be produced.Type: ApplicationFiled: September 18, 2012Publication date: August 14, 2014Applicant: RHODIA OPERATIONSInventors: Stephane Jeol, Vincent Mollet, Benjamin Paci
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Publication number: 20140220284Abstract: A polyimide film suitable for insulating material is prepared by reacting an acid anhydride and diamine compounds comprising p-phenylenediamine. The polyimide film has excellent electric properties such as a coefficient of thermal expansion, an elongation, a intensity, a dielectric strength and a bulk resistance, and suitable for use in a TAB tape employing a polyimide film, and a flexible printed wiring board.Type: ApplicationFiled: February 6, 2014Publication date: August 7, 2014Applicant: KOLON INDUSTRIES, INC.Inventor: Hak Gee JUNG
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Publication number: 20140200325Abstract: A thermoplastic polyimide resin containing a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of formula (1) with respect to the total of the repeating structural unit of formula (1) and the repeating structural unit of formula (2) being from 40 to 70% by mol: wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure; R2 represents a divalent chain aliphatic group having from 5 to 12 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic ring.Type: ApplicationFiled: February 5, 2013Publication date: July 17, 2014Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yuuki Sato, Jun Mitadera
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Patent number: 8772417Abstract: Disclosed are (1) a method of preparing a polyimide membrane, including cross-linking polyimides via thermal labile side chains and decomposition of the thermal labile side chains; and (2) polyimide membranes thus prepared.Type: GrantFiled: April 12, 2011Date of Patent: July 8, 2014Assignee: National University of SingaporeInventors: Youchang Xiao, Tai-Shung Chung, Mei Ling Chua, Mohammad Askari, Rui Chin Ong
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Publication number: 20140179878Abstract: A polyimide including a structure shown as Formula II is provided, wherein X is halogen, A1 is selected from one of Formula 1 to Formula 18, and n is from 2 to 500,Type: ApplicationFiled: December 25, 2012Publication date: June 26, 2014Applicant: TAIWAN TEXTILE RESEARCH INSTITUTEInventors: Der-Jang Liaw, Wen-Hsiang Chen, Ying-Chi Huang, Bo-Cheng Tao
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Patent number: 8754186Abstract: An object of the present invention is to provide a polyimide precursor composition that can be cured at low temperatures (250° C. or lower), while having a low viscosity even at a high concentration, and a method of producing the same. Another object of the present invention is to provide a polyimide coating film obtained from the polyimide precursor composition and having good physical properties, and a method of producing the same. Furthermore, another object of the present invention is to provide a photosensitive resin composition containing the polyimide precursor composition, and a method of producing the same. These objects can be achieved by the polyimide precursor composition containing an imidized tetracarboxylic acid having a specific structure and a diamine having a specific structure.Type: GrantFiled: December 19, 2007Date of Patent: June 17, 2014Assignee: Kaneka CorporationInventors: Kan Fujihara, Tetsuya Kogiso, Yoshihide Sekito
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Patent number: 8742031Abstract: Heat-resistant polyimide copolymers having the following four components: pyromellitic dianhydride (PMDA), 1,4-diaminodiphenyl ether (DADE), biphenyltetracarboxylic dianhydride (BPDA), and 2,4-diaminotoluene (DAT) are provided. In an embodiment the molar ratio of (BPDA):(DADE):(PMDA):(DAT) is 2:2:m:m, in which m is an integer of 3, 4 or 5.Type: GrantFiled: April 3, 2007Date of Patent: June 3, 2014Assignees: Solpit Industries, Ltd., Sojitz CorporationInventor: Hiroshi Itatani
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Publication number: 20140146380Abstract: Disclosed is a transparent electrochromic polyimide, polymerized of a diamine and a cycloaliphatic dianhydride. The diamine includes a diamino triphenylamine having the formula: wherein R1 consists of hydrogen, halogen, C1-6 alkyl group, C1-6 alkoxy group, or and R2 consists of hydrogen, halogen, C1-6 alkyl group, or C1-6 alkoxy group.Type: ApplicationFiled: April 18, 2013Publication date: May 29, 2014Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Yu-Ruei KUNG, Chyi-Ming LEU
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Publication number: 20140144324Abstract: A gas separation membrane having a polyimide structure. The polyimide structure is provided to contain a repeating unit represented by general formula (1): (In the formula, R1 is a divalent organic group and R2 is a tetravalent organic group), wherein R1 is a divalent organic group represented by general formula (2): (In the formula, Raa is a single bond, an oxygen atom, a sulfur atom, —SO2— group, —CH2— group, —C(?O)— group, —C(CH3)2— group, —C(CH3)(CH2CH3)— group, —C(CF3)2— group or a divalent organic group formed by removing any two hydrogen atoms from a C3-C12 alicyclic hydrocarbon or C6-C25 aromatic hydrocarbon. Rab is a C1-C6 alkyl group. “ac” and “ad” mutually independently represent an integer of 0 to 2 such that 1?ac+ad?4. HFIP represents a —C(CF3)2OH group. A straight line that intersects with a wiggly line represents a bonding moiety).Type: ApplicationFiled: April 23, 2013Publication date: May 29, 2014Inventors: Kazuhiro YAMANAKA, Takeshi SUDA, Hiroki UOYAMA
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Patent number: 8735534Abstract: The present invention provides a precursor composition for polyimides, said composition comprising an amic acid oligomer of formula (1) and a dianhydride derivative with ester (—C(O)OR) and carboxy (—C(O)OH) terminal groups of formula (2): wherein R, G, G1, P, D and m are as defined in the specification. The invention also provides polyimides synthesized from the above-mentioned precursor composition.Type: GrantFiled: October 2, 2009Date of Patent: May 27, 2014Assignee: Eternal Chemical Co., Ltd.Inventors: Chung-Jen Wu, Pi-Jen Cheng
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Publication number: 20140127497Abstract: A polyimide laminate obtained by casting a polyamic acid solution composition including a phosphorus compound and a polyamic acid, which is obtained from a tetracarboxylic acid component comprising 3,3?,4,4?-biphenyltetracarboxylic dianhydride as the main component and a diamine component comprising p-phenylenediamine as the main component, on a substrate; and then heating the polyamic acid solution composition to form a polyimide layer having a thickness of less than 50 ?m on the substrate.Type: ApplicationFiled: June 14, 2012Publication date: May 8, 2014Applicant: Ube Industries, Ltd.Inventors: Tomonori Nakayama, Takeshige Nakayama
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Patent number: 8716425Abstract: A method of improving the mechanical properties of polymers is described. The method involves heat treating the polymer at a temperature below the glass transition temperature in a wet or in a dry environment. Polymer articles capable of moisture uptake in humid environments, as well as polymer articles less susceptible to moisture uptake, have improved mechanical properties, particularly improved stress relaxation behavior and set properties, when treated in accord with the heat treatment method.Type: GrantFiled: July 29, 2005Date of Patent: May 6, 2014Assignee: Bay Materials, LLCInventors: Ray F. Stewart, John G. Lahlouh
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Publication number: 20140114027Abstract: A cage 1,2,3,4-cyclopentanetetracarboxylic acid (1,3:2,4)-dianhydride compound represented by formula [1], and a polyimide obtained by condensing the compound with a diamine. With the compound, it is possible to provide a polyimide which shows no absorption in the ultraviolet region and is highly transparent to light, has high insulating properties, has improved heat resistance and processability, and has excellent solubility in organic solvents. (In formula [1], R1 and R2 each independently represents a hydrogen atom, a halogen atom, or a C1-10 alkyl.Type: ApplicationFiled: December 31, 2013Publication date: April 24, 2014Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Hideo Suzuki, Takahiro Noda
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Patent number: 8697341Abstract: An aromatic ring-containing polymer, an underlayer composition including the same, and associated methods, the aromatic ring-containing polymer including a group represented by one of the following Chemical Formulae 1-1, 1-2, 2-1, and 2-2:Type: GrantFiled: June 2, 2011Date of Patent: April 15, 2014Assignee: Cheil Industries, Inc.Inventors: Kyong-Ho Yoon, Jin-Kuk Lee, Hwan-Sung Cheon, Min-Soo Kim, Jee-Yun Song
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Patent number: 8686106Abstract: The present invention provides a carbon black-dispersed polyamic acid solution composition having a high solids content and a high carbon black content. The invention further provides an intermediate transfer belt using the polyamic acid solution composition. The carbon black-dispersed polyamic acid solution composition is obtained by uniformly dispersing carbon black in a polyamic acid solution obtained by reacting biphenyltetracarboxylic dianhydride and an aromatic diamine in an organic polar solvent. The biphenyltetracarboxylic dianhydride includes 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 3,3?,4,4?-biphenyltetracarboxylic dianhydride. The aromatic diamine includes 4,4?-diaminodiphenyl ether and p-phenylenediamine. The polyamic acid solution has a solids content of 25 weight % or more.Type: GrantFiled: December 4, 2008Date of Patent: April 1, 2014Assignees: Gunze Limited, UBE Industries, Ltd.Inventors: Naoki Nishiura, Akira Ichino, Takashi Kuraoka, Toru Murakami, Takeshige Nakayama
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Patent number: 8674057Abstract: Provided are novel polyimides, poly(amide-imides) and polyamides, which are generated from new two photon diamino-monomers of the formula: wherein para or meta X—C6H4—O— and X?NH2; and CnHn+1 is either a straight or branched alkyl chain, and wherein n is an integer from 1 to 20.Type: GrantFiled: February 23, 2011Date of Patent: March 18, 2014Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Loon-Seng Tan, Matthew J. Dalton, Ramamurthi Kannan
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Publication number: 20140072745Abstract: What is described is a transparent polyamide-imide based on one or more different imido-dicarboxylic acids (AB) or derivatives thereof, and cycloaliphatic diamines (C) comprising 6 to 24 carbon atoms, wherein the imido-dicarboxylic acids (AB) or derivatives thereof are selected from the group of imido-dicarboxylic acids (AB) having the following structural formulas: wherein: ASL=(CH2)5-11, phenylene, (ylomethyl)phenyl, bis(ylomethyl)benzene, cyclohexanediyl, (ylomethyl)cyclohexyl, bis(ylomethyl)cyclohexane, cyclopentanediyl, (ylomethyl)cyclopentyl, bis(ylomethyl)cyclopentane, R?OH, O-alkyl, O-aryl, Cl, NH-ASL-COOH, Br, O—(CO)-alkyl, O—(CO)-aryl, R1=H, methyl, ethyl, propyl, with the provision that the ring can be substituted once or twice, and, with double substitution of the ring, the two substituents can be selected from the group, but may be different, and also moulding compounds based thereon, a method for production, and uses.Type: ApplicationFiled: May 2, 2013Publication date: March 13, 2014Applicant: EMS-PATENT AGInventors: Botho HOFFMANN, Luc SCHERRER, Heinz HOFF
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Patent number: 8669038Abstract: Polyimide-based polymers and copolymers thereof are provided. Further provided is a positive type photoresist composition comprising at least one of the polyimide-based polymers and copolymers thereof as a binder resin. The photoresist composition exhibits high resolution, high sensitivity, excellent film characteristics and improved mechanical properties, which are required for the formation of semiconductor buffer coatings.Type: GrantFiled: August 7, 2012Date of Patent: March 11, 2014Assignee: LG Chem, Ltd.Inventors: Chan Hyo Park, Sang Woo Kim, Kyung Jun Kim, Hye Ran Seong, Se Jin Shin, Dong Hyun Oh
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Publication number: 20140058060Abstract: 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.Type: ApplicationFiled: March 19, 2012Publication date: February 27, 2014Inventor: Takeshi Uekido
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Publication number: 20140037930Abstract: A flexible substrate with a high optical transparency (>80% from 400 to 750 nm) that is retained after exposure to 300° C., near-zero birefringence (<±0.001), and a relatively low CTE (<60 ppm/° C.) is disclosed. The substrate may be manufactured as single layer, polyimide films and as a multi-layer laminate comprising a polyimide layer and a thin glass layer. The polyimides may include alicyclic dianhydrides and aromatic, cardo diamines. The films formed of the polyimides can serve as flexible substrates for optical displays and other applications that require their unique combination of properties.Type: ApplicationFiled: May 10, 2013Publication date: February 6, 2014Applicant: Akron Polymer Systems, Inc.Inventor: Akron Polymer Systems, Inc.
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Publication number: 20140024786Abstract: Disclosed are a polyimide precursor composition that includes a polyamic acid selected from compounds represented by Chemical Formulae 1 to 3, and a combination thereof; and a cross-linking agent selected from a compound represented by Chemical Formula 4, a compound represented by Chemical Formula 5, and a combination thereof; an article including a cross-linked polyimide using the same; and a display device including the article.Type: ApplicationFiled: July 17, 2013Publication date: January 23, 2014Inventors: Byung Hee SOHN, Sang Soo LEE, Jae Jun LEE, Hyun Jeong JEON
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Patent number: 8623515Abstract: Disclosed is a liquid crystal alignment agent that includes a polymer including polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof. In Chemical Formulae 1 and 2, X1, X2, Y1 and Y2 are the same as defined in the detailed description.Type: GrantFiled: September 21, 2011Date of Patent: January 7, 2014Assignee: Cheil Industries Inc.Inventors: Jae-Deuk Yang, Eun-Ha Kim, Myoung-Youp Shin, Yong-Sik Yoo, Guk-Pyo Jo, Jung-Gon Choi
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Publication number: 20130320272Abstract: An intermediate transfer member that includes a fluorinated polyamic acid and a conductive component.Type: ApplicationFiled: May 29, 2012Publication date: December 5, 2013Applicant: XEROX CORPORATIONInventors: Jin Wu, Lanhui Zhang, Lin Ma, Kock-Yee Law
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Patent number: 8592548Abstract: Bis(halophthalimides) are prepared in mixture in an organic liquid such as ortho-dichlorobenzene or anisole, by a reaction at a temperature of at least 150° C. between at least one diamine compound and at least one halophthalic anhydride in the presence of imidization catalyst. The reaction mixture is maintained at about 15% by weight solids content and rich in the halophthalic anhydride by constantly monitoring the reaction mixture using analytical methods such as high performance liquid chromatography. The product mixture may be directly employed in the direct preparation of polyetherimides, and similar slurries may be employed to prepare other polyether polymers.Type: GrantFiled: December 22, 2004Date of Patent: November 26, 2013Assignee: Sabic Innovative Plastics IP B.V.Inventors: John Yupeng Gui, Norman Enoch Johnson, Thomas Link Guggenheim, David Winfield Woodruff, James Manio Silva, Farid Fouad Khouri
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Patent number: 8592528Abstract: Polyamic acid including structural units of the following Chemical Formulae 1 and 2 is provided: In Chemical Formulae 1 and 2, each substituent is as defined in the detailed description.Type: GrantFiled: September 3, 2010Date of Patent: November 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Eunseog Cho, Youngsuk Jung, Sangmo Kim, Byung-Hee Sohn, Yooseong Yang
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Publication number: 20130303691Abstract: A material for an optical film including a compound represented by Chemical Formula 1; a polymer including a repeating unit represented by Chemical Formula 10; a polymer including a repeating unit represented by Chemical Formula 20 and a repeating unit represented by Chemical Formula 21; an article prepared by using the polymer; and a display device including the article:Type: ApplicationFiled: March 7, 2013Publication date: November 14, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chung Kun CHO, Androsov DMITRY, Kalinina FEDOSYA, Yoon Seok KO, Kovalev MIKHAIL
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Patent number: 8580913Abstract: A polyimide resin which is satisfactory in solvent solubility and heat resistance, has a low coefficient of water absorption and is excellent in adhesive properties and a method for manufacturing the same, a film containing the subject polyimide resin and a metal-clad laminate including an adhesive layer composed of the subject polyimide resin are provided. The polyimide resin is a polyimide resin containing a molecule having a repeating unit represented by a structure of any one of the following formulae (1) to (3) in a specified proportion, whose molecular end is capped by an end-capping agent.Type: GrantFiled: July 5, 2007Date of Patent: November 12, 2013Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Tsuyoshi Bito, Shuta Kihara, Jitsuo Oishi
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Publication number: 20130289202Abstract: The disclosed polyamic acid resin composition contains (a) a polyamic acid represented by general formula (1) or (2), and (b) a solvent. (A, A?, C, C? are end-capped polyamic acid blocks comprising diaminobenzanilide and pyromellitic dianhydride or benzophenone tetracarboxylic dianhydride, and B, or D, is a polyamic acid block comprising a repeating unit other than A, A?, or C, C?.Type: ApplicationFiled: December 21, 2011Publication date: October 31, 2013Applicant: TORAY INDUSTRIES, INC.Inventors: Daichi Miyazaki, Kazuto Miyoshi, Masao Tomikawa
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Publication number: 20130289156Abstract: An object of the present invention is to provide a method for producing polyamide acid particles which is used as a raw material for polyimide particles with a small average particle diameter having high heat resistance. Other objects of the present invention are to provide a method for producing polyimide particles using the method for producing polyamide acid particles, and polyimide particles produced by the method for producing polyimide particles. Yet another object of the present invention is to provide a bonding material for an electronic component, which has a low linear expansion coefficient and a low elastic modulus after being cured in the temperature range equal to or less than the glass transition temperature, so that a joined body with high reliability can be produced.Type: ApplicationFiled: December 14, 2011Publication date: October 31, 2013Inventor: Satoshi Hayashi
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Publication number: 20130279126Abstract: An aromatic polyimide film can be formed from a plurality of monomers comprising an aromatic dianhydride, and a first aromatic diamine selected from a group consisting of formulae (I) and (II): and wherein X and Y are respectively selected from the group consisting of oxygen, nitrogen and sulfur, and R and R? are respectively selected from the group consisting of NH2, wherein the aromatic polyimide film has an average linear coefficient of thermal expansion equal to or below about 5 ppm/° C. in a temperature range between about 50° C. and about 500° C.Type: ApplicationFiled: November 6, 2012Publication date: October 24, 2013Applicant: Taimide Technology IncorporationInventors: Chung-Yi Chen, Wu-Yung Yang, Chih-Wei Lin
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Publication number: 20130273423Abstract: In one aspect, a water soluble binder composition, a method of producing the same and an electrode for a rechargeable battery employing the same is provided.Type: ApplicationFiled: March 12, 2013Publication date: October 17, 2013Applicant: SAMSUNG SDI CO., LTD.Inventors: Hyesun Jeong, Beomwook Lee, Hyeran Lee
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Patent number: 8557928Abstract: A liquid crystal alignment agent is provided that includes a polymer including polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof. In Chemical Formulae 1 and 2, each X1, X2, Y1 and Y2 is the same as in the detailed description.Type: GrantFiled: September 23, 2011Date of Patent: October 15, 2013Assignee: Cheil Industries Inc.Inventors: Eun-Ha Kim, Myoung-Youp Shin, Jae-Deuk Yang, Yong-Sik Yoo, Guk-Pyo Jo, Jung-Gon Choi
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Publication number: 20130224653Abstract: A novel polyimide which retains the characteristics of polyimides, that is, excellent heat resistance, electrical insulation and chemical resistance, of which dielectric constant is lower than those of the known polyimides, as well as a composition containing the same and a process for producing the same, is disclosed. The polyimide of the present invention is a cross-linked polyimide having a dielectric constant of not more than 2.7, which was produced by polycondensing (a) tetramine(s), (a) tetracarboxylic dianhydride(s) and (an) aromatic diamine(s) in the presence of a catalyst.Type: ApplicationFiled: April 3, 2013Publication date: August 29, 2013Applicant: PI R&D Co., LtdInventor: PI R&D Co., Ltd
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Patent number: 8513373Abstract: A process for the production of non-thermoplastic polyimide film whose precursor solution has high storage stability and which exhibits high adhesiveness even without expensive surface treatment, more specifically, a process for the production of non-thermoplastic polyimide film made of a non-thermoplastic polyimide containing a block resulting from a thermoplastic polyimide which comprises (A) the step of forming a prepolymer having amino or an acid anhydride group at the end in an organic polar solvent (B) the step of synthesizing a polyimide precursor solution by using the obtained prepolymer, an acid anhydride, and a diamine in such a way as to become substantially equimolar over the whole step, and (C) the step of casting a film-forming dope containing the polyimide precursor solution and subjecting the resultant dope to chemical and/or thermal imidization, wherein the diamine and acid dianhydride used in the step (A) are selected so that the reaction of both with each other in equimolar amounts can giveType: GrantFiled: September 20, 2005Date of Patent: August 20, 2013Assignee: Kaneka CorporationInventors: Hisayasu Kaneshiro, Takashi Kikuchi
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Patent number: 8507634Abstract: Exemplary embodiments provide an intermediate transfer belt, materials and processes for producing an intermediate transfer belt, and an image transfer apparatus used in electrophotographic printing devices, wherein the intermediate transfer belt can comprise a thermosetting polyimide comprising the reaction product of a polyamic acid and a hydroxyl-terminated polybutadiene.Type: GrantFiled: December 22, 2010Date of Patent: August 13, 2013Assignee: Xerox CorporationInventor: Jin Wu
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Publication number: 20130193605Abstract: The object is to propose an improved process for the production of a polyimide foam by which a large-sized polyimide foam in a state of fine and homogeneous cells can be readily obtained by easy operations and convenient steps. A melt-shaped body of a polyimide precursor obtainable by melt-treating in a closed state a powder of a polyimide precursor including at least an aromatic tetracarboxylic acid ester component and an aromatic amine component. A process for the production of a polyimide foam including the steps of melt-shaping in a closed state a powder of a polyimide precursor including at least aromatic tetracarboxylic acid ester component and an aromatic amine component to give a melt-shaped body of the polyimide precursor, and foaming the melt-shaped body of the polyimide precursor by a heat treatment.Type: ApplicationFiled: March 8, 2011Publication date: August 1, 2013Applicant: UBE INDUSTRIES, LTD.Inventors: Toshinori Hosoma, Hideki Ozawa, Shigeru Yamamoto, Yukio Kaneko
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Publication number: 20130172433Abstract: A method for the manufacture of a polymer is provided, the method comprising: Providing a first monomer, the first monomer comprising a bicyclic diamine moiety, a first nucleophilic group provided on a carbon atom of an aromatic moiety, and a second nucleophilic group provided on a carbon atom of an aromatic moiety; Providing a bridging compound comprising at least two sites vulnerable to nucleophilic attack; and Contacting the first monomer with the bridging compound. Polymers made by said method and uses of such polymers are also disclosed.Type: ApplicationFiled: September 15, 2011Publication date: July 4, 2013Applicant: UNIVERSITY COLLEGE CARDIFF CONSULTANTS LIMITEDInventors: Neil Bruce McKeown, Mariolino Carta