Nitrogen Reactant Having At Least One Amino-nitrogen Atom Contains A Carboxylic Acid Group Or Is A Derivative Thereof Patents (Class 528/184)
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Patent number: 11532819Abstract: An electrode binder resin composition containing a polyamic acid, a water-soluble polymer other than the polyamic acid, and a solvent. The use of the electrode binder resin composition improves cyclic characteristics.Type: GrantFiled: May 23, 2019Date of Patent: December 20, 2022Assignee: UBE CorporationInventors: Takeshige Nakayama, Tetsuo Sakai, Masanori Morishita
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Patent number: 10882931Abstract: A functional polymer including at least two different types of side chains, having the general formula (1), wherein A is an at least monosubstituted alkylene or arylene group; B is an amide, ester or ether group and n is 0 or 1; F is selected from: an ester, secondary amine, amide, ether, thio ether, thio ester, and may be the same or different for the different side chains; D is a side chain intended to reversible bind to a substrate or has a coating function; E is a side chain intended to irreversible bind to a substrate, the side chain E and polymer includes 1 to 10 different side chains D and 1 to 10 different side chains E, but at least one of each, and includes a plurality of each type, whereby the different types of side chains are randomly or regularly distributed in the polymer.Type: GrantFiled: September 11, 2014Date of Patent: January 5, 2021Assignee: SUSOS AGInventors: Angela Serrano, Stefan Zuercher, Samuele Tosatti
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Patent number: 10280334Abstract: A polyimide (PI) having two —COOH capping groups at each end is provided. A coating composition is further provided, which contains the PI and a hardening agent having 2 to 6 functional groups capable of reacting with —COOH. A PI coating layer and PI film formed by the coating composition of the present invention possess excellent chemical resistance and coefficient of thermal expansion (CTE), which makes them applicable in fabrication of protective materials for active/passive devices, optical materials, touch panels, copper foil substrates, soft flexible electronic materials or integrated circuit elements, or film substrate for glass film touch panels.Type: GrantFiled: December 27, 2013Date of Patent: May 7, 2019Assignee: Eternal Materials Co., Ltd.Inventors: Meng-Yen Chou, Chung-Jen Wu
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Patent number: 9161443Abstract: Provided are a wholly aromatic polyester amide copolymer resin, a polymer film containing the wholly aromatic polyester amide copolymer resin, a flexible metal clad laminate containing the polymer film, and a flexible printed circuit board employing the flexible metal clad laminate. The disclosed wholly aromatic polyester amide copolymer resin includes 5-25 parts by mole of a repeating unit (A) derived from an aromatic hydroxy carboxylic acid; 20-40 parts by mole of at least one repeating unit selected from the group consisting of a repeating unit (B) derived from an aromatic amine having a phenolic hydroxyl group and a repeating unit (B?) derived from an aromatic diamine; 20-40 parts by mole of a repeating unit (C) derived from an aromatic dicarboxylic acid; 5-20 parts by mole of a repeating unit (D) derived from an aromatic diol; and 5-20 parts by mole of a repeating unit (E) derived from an aromatic amino carboxylic acid.Type: GrantFiled: November 28, 2011Date of Patent: October 13, 2015Assignee: SHENZHEN WOTE ADVANCED MATERIALS CO., LTD.Inventors: Yang Seob Kim, Bon Hyeok Gu, Mi Jeong Kim, Mahn Jong Kim
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Patent number: 8927682Abstract: Poly(glycolide) polymers are disclosed. The polymers generally include a polymerized alkynyl-substituted glycolide having a polymer backbone with one or more alkynyl groups appended thereto. The alkynyl groups provide reactive sites for further functionalization of the polymer, for example by reaction with azide derivatives (e.g., azide-substituted organic compounds). Alkynyl and azide groups react via the “click” chemistry mechanism to form functional groups covalently bonded to the polymer via a triazole link. The polymers are biodegradable and can be used to deliver drugs or other therapeutic substances (e.g., large biomolecules such as single strand RNA) at targeted locations in a patient's body and/or at controlled release rates.Type: GrantFiled: August 25, 2008Date of Patent: January 6, 2015Assignee: Board of Trustees of Michigan State UniversityInventors: Gregory L. Baker, Milton R. Smith, III, Xuwei Jiang, Erin B. Vogel
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Publication number: 20150004212Abstract: The present invention is directed to linear, biodegradable polyesteramide (PEA) polymers synthesized with repeating units derived from aminophenol esters and diacids. These PEAs have a monomer repeat represented by as well as a variety of uses to coat, form or comprise medical devices, combination medical devices and pharmaceutical compositions, including sustained release formulations.Type: ApplicationFiled: September 19, 2014Publication date: January 1, 2015Inventors: Arthur Schwartz, Satish Pulapura, Sarita Nethula, Archana Rajaram, Arikha Moses
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Publication number: 20140342086Abstract: The present invention relates to polymer, homo- or copolymer or oligomer, which, when irradiated with polarised light orients perpendicular to the polarization direction of polarized actinic light, for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, and which derives from at least one monomer (I), compositions thereof, and its use for optical and electro optical devices, such as, liquid crystal devices (LCDs), especially for planar orientation of liquid crystals.Type: ApplicationFiled: September 28, 2012Publication date: November 20, 2014Inventors: Mohammed Ibn-Elhaj, Eva Veenstra, Sabrina Chappellet, Jean-François Eckert, Frédéric Lincker, Satish Palika, Valsa Kannookadan, Qian Tang
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Patent number: 8846847Abstract: A sterically hindered phenol and phosphite based compound represented the following formula: and its use as an antioxidant in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.Type: GrantFiled: May 29, 2013Date of Patent: September 30, 2014Assignee: Polnox CorporationInventors: Ashok L. Cholli, Rajesh Kumar
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Publication number: 20140284085Abstract: Provided are a wholly aromatic polyester amide copolymer resin, a polymer film containing the wholly aromatic polyester amide copolymer resin, a flexible metal clad laminate containing the polymer film, and a flexible printed circuit board employing the flexible metal clad laminate. The disclosed wholly aromatic polyester amide copolymer resin includes 5-25 parts by mole of a repeating unit (A) derived from an aromatic hydroxy carboxylic acid; 20-40 parts by mole of at least one repeating unit selected from the group consisting of a repeating unit (B) derived from an aromatic amine having a phenolic hydroxyl group and a repeating unit (B?) derived from an aromatic diamine; 20-40 parts by mole of a repeating unit (C) derived from an aromatic dicarboxylic acid; 5-20 parts by mole of a repeating unit (D) derived from an aromatic diol; and 5-20 parts by mole of a repeating unit (E) derived from an aromatic amino carboxylic acid.Type: ApplicationFiled: November 28, 2011Publication date: September 25, 2014Applicant: SAMSUNG FINE CHEMICALS CO., LTD.Inventors: Yang Seob Kim, Bon Hyeok Gu, Mi Jeong Kim, Mahn Jong Kim
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Publication number: 20140138654Abstract: Ferroelectric memory elements which contain a poly ?-amino acid which is a copolymer containing a glutamic acid-?-ester unit represented by the formula (I), defined herein, and a glutamic acid-?-ester unit represented by the formula (II), defined herein, in a molar ratio of units of formula (I) to units of formula (II) of 10/90-90/10 are useful as recording elements such as RFID and the like.Type: ApplicationFiled: November 11, 2013Publication date: May 22, 2014Applicant: Ajinomoto Co., Inc.Inventors: Satoru OHASHI, Sei UEMURA, Manabu KITAZAWA, Toshihide KAMATA
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Patent number: 8716217Abstract: The present invention relates to novel biodegradable materials based on modified polyamino acids that are useful in particular in the vectorization of active principle(s) (APs). The invention is also directed to novel pharmaceutical, cosmetic, health-food or plant-protection compositions based on these polyamino acids. The aim of the invention is to provide a novel polymeric starting material which can be used for AP vectorization and which satisfy all the requirements: biocompatibility, biodegradability, ability to easily associate with or dissolve numerous active principles and to release these active principles in vivo. This goal is achieved by the present invention, which relates to novel polyglutamates modified by cationic groups, which, if they can be deprotonated, exhibit a pKa equal to or greater than 7, and by hydrophobic groups comprising from 8 to 30 carbon atoms.Type: GrantFiled: May 5, 2008Date of Patent: May 6, 2014Inventors: You-Ping Chan, Cecile Bonnet-Gonnet, Olivier Breyne
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Patent number: 8691933Abstract: Disclosed are compositions comprising antioxidants and stabilizers, such as, acid scavengers or organic phosphorus stabilizers, and optionally further comprising co-stabilizers. The disclosed compositions are useful as stabilizers for polyolefins and other polymeric materials. The disclosed compositions and methods generally provide longer shelf lives and better oxidative resistance to materials than currently available antioxidants.Type: GrantFiled: July 1, 2013Date of Patent: April 8, 2014Assignee: Polnox CorporationInventors: Vijayendra Kumar, Rajesh Kumar, Ashish Dhawan, Sui-Zhou Yang, Ashok L. Cholli
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Publication number: 20140079760Abstract: The present invention relates to polymers modified to increase their resorbability. In particular, the polymers of the invention have phenyl ester side chains which are good leaving groups and which thereby increase the resorption rate of the polymer relative to the same polymer, for example, bearing a comparable amount of an alkyl ester side chain. Such polymers are generally water insoluble, but when modified are able to solubilize drugs and upon degradation and resorption, release those in a physiological environment in a controlled and/or sustained manner.Type: ApplicationFiled: November 26, 2013Publication date: March 20, 2014Applicant: TYRX Pharma, Inc.Inventors: Arthur Schwartz, Satish Pulapura, Sarita Nethula
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Publication number: 20140030341Abstract: Polymers, microspheres, and associated methods are presented for the treatment of chronic and acute pain. An anhydride polymer comprising a biodegradable backbone that comprises one or more pendant residues of a non-steroidal anti-inflammatory (NSAID). NSAIDs may be incorporated in to the polymers as pendant groups that are not part of the polymer backbone. The polymer comprises repeating units that form the biodegradable backbone, wherein in each repeating unit comprises a pendant residue of the NSAID.Type: ApplicationFiled: April 6, 2012Publication date: January 30, 2014Applicant: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEYInventors: Kathryn E. Uhrich, Roselin Rosario-Melendez
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Patent number: 8637631Abstract: A polyphenylene ether which has a content of a metal magnetic material of 0.001 ppm or higher and lower than 1.000 ppm.Type: GrantFiled: February 24, 2011Date of Patent: January 28, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Tomohiro Kondo, Akinobu Nagai, Akira Mitsui
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Publication number: 20140011905Abstract: The present invention relates to novel polyamic acid; a photosensitive resin composition satisfying excellent flexibility and low stiffness and exhibiting excellent heat resistance and plating resistance; a dry film obtained from the photosensitive resin composition; and a circuit board including the dry film.Type: ApplicationFiled: March 19, 2012Publication date: January 9, 2014Applicant: LG CHEM, LTD.Inventors: You-Jin Kyung, Hee-Jung Kim, Kwang-Joo Lee, Jung-Hak Kim
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Publication number: 20140004060Abstract: The present invention includes an ultraviolet radiation absorbing polymer composition that includes polymers containing a UV-chromophore, as described in the specification and as claimed the reaction product of a monoglyceride and a poly-acid monomer containing a UV-chromophore.Type: ApplicationFiled: March 13, 2013Publication date: January 2, 2014Applicant: JOHNSON & JOHNSON CONSUMER COMPANIES, INC.Inventor: JOHNSON & JOHNSON CONSUMER COMPANIES, INC.
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Patent number: 8618244Abstract: Disclosed herein are a method for preparing a benzoxazole-based polymer by thermal rearrangement, the benzoxazole-based polymer prepared by the method and a gas separation membrane comprising the polymer. More specifically, provided are a method for preparing a benzoxazole-based polymer by subjecting poly(hydroxyamide) as an intermediate to thermal treatment involving dehydration, the benzoxazole-based polymer obtained thereby and gas separation membrane comprising the polymer. The benzoxazole-based polymer of the present invention can be simply prepared by thermally rearrangement via thermal treatment at low temperatures, and thus exhibits superior mechanical and morphological properties and has well-connected microcavities. Due to showing excellent permeability and selectivity for various gases, the benzoxazole-based polymer is suited for application to gas separation membranes, in particular, gas separation membranes for small gases.Type: GrantFiled: March 13, 2008Date of Patent: December 31, 2013Assignee: Industry-University Cooperation Foundation, Hanyang UniversityInventors: Young Moo Lee, Keun-Young Kim, Chul-Ho Jung, Ho-Bum Park
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Patent number: 8598382Abstract: A sterically hindered phenol and phosphite based compound represented by the following formula: and its use as an antioxidant in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.Type: GrantFiled: August 13, 2012Date of Patent: December 3, 2013Assignee: Polnox CorporationInventors: Ashok L. Cholli, Rajesh Kumar
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Publication number: 20130317118Abstract: The present invention relates to compounds of formula I and II, which are functionalized amino acids, and polymers formed from the same. Polymers formed from the functionalized amino acids are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.Type: ApplicationFiled: July 25, 2013Publication date: November 28, 2013Applicant: BEZWADA BIOMEDICAL, LLCInventor: Rao S Bezwada
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Patent number: 8524853Abstract: The present invention relates to polyarylene ether block copolymers according to the general formula A-K—X—K-A, where —X— is a polyarylene ether segment with number-average molar mass of at least 5000 g/mol, and A- is a segment of the general structure R2NH—(R1—NH—CO—Ar—CO—NH)n—R1—NH—, in which R1 is a linear or branched alkylene group having from 2 to 12 carbon atoms and Ar is an arylene group having from 6 to 18 carbon atoms, and R2 is selected from aryloyl, alkyloyl, and H, and in which the number average of n is from 1 to 3, and there is a coupling group K of the structure —CO—Ar3—CO— linking each A to X, in which Ar13 is an aromatic group having from 6 to 18 carbon atoms. The present invention also relates to a process for the production of the polyarylene ether block copolymers of the invention, to polymer compositions comprising the polyarylene ether block copolymers of the invention, and also to the use thereof for the production of moldings, of films, of fibers, or of foams.Type: GrantFiled: May 31, 2010Date of Patent: September 3, 2013Assignee: BASF SEInventors: Cecile Gibon, Martin Weber, Reinoud J. Gaymans, Ranimol Stephen
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Publication number: 20130217790Abstract: In one aspect, compositions are described herein. In some embodiments, a composition comprises a polymer or oligomer formed from one or more polycarboxylic acids, one or more alcohols, and one or more catechol-containing species. In another aspect, methods of making a composition are described herein. In some embodiments, a method of making a composition comprises providing a polycarboxylic acid; providing an alcohol; combining the polycarboxylic acid with the alcohol; adding a catechol-containing species to the combination of the polycarboxylic acid and the alcohol; and forming a polymer or oligomer from the polycarboxylic acid, the alcohol, and the catechol-containing species. In some embodiments, the catechol-containing species comprises an amine moiety, a carboxylic acid moiety, or a hydroxyl moiety that is not part of the catechol group.Type: ApplicationFiled: January 30, 2013Publication date: August 22, 2013Applicant: The Board of Regents, The University of Texas SystemInventor: The Board of Regents, The University of Texas System
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Publication number: 20130203713Abstract: The present invention provides new classes of phenol compounds, including those derived from tyrosol and analogues, useful as monomers for preparation of biocompatible polymers, and biocompatible polymers prepared from these monomeric phenol compounds, including novel biodegradable and/or bioresorbable polymers. These biocompatible polymers or polymer compositions with enhanced bioresorbabilty and processibility are useful in a variety of medical applications, such as in medical devices and controlled-release therapeutic formulations. The invention also provides methods for preparing these monomeric phenol compounds and biocompatible polymers.Type: ApplicationFiled: February 2, 2013Publication date: August 8, 2013Applicant: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEYInventor: Rutgers, The State University of New Jersey
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Patent number: 8497344Abstract: A method for obtaining a composition of an aromatic polyamide containing para-phenylene terephthalamide and 2-(p-phenylene)benzimidazole terephthalamide units, the method including copolymerizing: i) a mole % of para phenylenediamine; ii) b mole % of 5(6)-amino-2-(p-aminophenyl)benzimidazole; and iii) 90-110 mole % of terephthaloyl dichloride in a mixture of N-methyl pyrrolidone and containing c wt. % of calcium chloride, wherein c is within the range from 1 to 20, and wherein the ratio a:b ranges from 1:20 to 20:1, a+b is 100 mole %, and i), ii), and iii) together comprise 1-20 wt. % of the mixture, wherein the product b·c is at least 50 and less than 215 and that the composition is a crumb with a relative viscosity ?rel of at least 4, wherein the crumb is defined as non-sticky particles at least 95% of which having an average diameter of 0.7-15 mm.Type: GrantFiled: November 11, 2004Date of Patent: July 30, 2013Assignee: Teijin Aramid B.V.Inventor: Johannes Bos
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Patent number: 8497342Abstract: A liquid crystal block copolymer comprising at least one liquid crystal polymer block comprising a polymer of diethylene glycol bis(4-hydroxybenzoate) and diphenyl 2,6-naphthalene dicarboxylate and at least one non-liquid crystal polymer block.Type: GrantFiled: April 19, 2012Date of Patent: July 30, 2013Assignee: Boston Scientific Scimed, Inc.Inventors: John J. Chen, Daniel J. Horn, Zhikuan Lu, Dong Zhang, Jiaokai Jing, Frank W. Harris
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Patent number: 8487064Abstract: Disclosed herein are polymer compounds and a method for preparing thereof. More specifically, provided are polymer compounds with well-connected, narrow size distribution free-volume element and a method for preparing the polymer compounds by thermal rearrangement for aromatic polyimides containing ortho-positioned functional groups in the solid state.Type: GrantFiled: May 20, 2011Date of Patent: July 16, 2013Assignee: Industry-University Cooperation Foundation, Hanyang UniversityInventors: Young Moo Lee, Ho-Bum Park, Chul-Ho Jung, Sang-Hoon Han
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Patent number: 8470914Abstract: The present invention relates to polyimide or precursor thereof represented by Chemical Formula 1 or 2 and a photosensitive resin composition including the same. The polyimide or precursor thereof are fabricated using diamine comprising polyalkyleneoxide. The photosensitive resin composition of the present invention has excellent light transmissivity, an excellent resolution, and excellent photo sensitivity and image forming performance. Further, the photosensitive resin composition has high adhesiveness with substrates, such as a silicon film, a silicon oxide film, and a metal film. In particular, an excellent film without failure, such as crack, can be formed.Type: GrantFiled: August 23, 2010Date of Patent: June 25, 2013Assignee: LG Chem, Ltd.Inventors: Jung Ho Jo, Kyung Jun Kim, Hye Ran Seong, Hye Won Jeong, Chan Hyo Park, Yu Na Kim, Sang Woo Kim, Se Jin Shin, Kyoung Ho Ahn
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Publication number: 20130158208Abstract: Disclosed are a liquid crystal alignment agent, a liquid crystal alignment film manufactured using the same, and a liquid crystal display including the liquid crystal alignment film. The liquid crystal alignment agent includes a polymer comprising a polyamic acid including a repeating unit represented by Chemical Formula 1, polyimide including a repeating unit represented by Chemical Formula 2, or a combination thereof: wherein Y1 and Y2 are each independently a divalent organic group derived from diamine, wherein the diamine includes photodiamine represented by Chemical Formula 3 and functional diamine represented by Chemical Formula 5: and wherein the other substituents are the same as defined in the detailed description.Type: ApplicationFiled: August 22, 2012Publication date: June 20, 2013Applicant: CHEIL INDUSTRIES INC.Inventors: Jae-Deuk YANG, Yong-Sik YOO, Guk-Pyo JO
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Patent number: 8445627Abstract: The invention provides new aliphatic diester-di-acid-containing PEA polymer compositions with significant improvement in hydrolytic degradation rates as compared to aliphatic di-acid-containing PEA polymers. The di-acids used in the invention PEA compositions include non-toxic fatty aliphatic homologs. These molecules inherently contain two-ester groups, which easily can be cleaved by biotic (enzymatic) and abiotic hydrolysis. Additional di-acid-type compounds useful for active polycondensation are ?,?-alkylene dicarboxylates composed of short aliphatic non toxic diols and di-acids. In addition, the invention PEA polymer compositions optionally can include a second monomer, such as a C-protected L-lysine-based monomer, to introduce additional chain flexibility into the polymer. The invention PEA polymer compositions are useful for delivery of bioactive agents when administered internally.Type: GrantFiled: March 22, 2007Date of Patent: May 21, 2013Assignee: Medivas, LLCInventors: Ramaz Katsarava, Natia Mazanashvili, Zaza D. Gomurashvili, Turner Daniel Jenkins, Nino Mchedlishvili
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Patent number: 8357753Abstract: This invention relates to compositions, and the use of such compositions for protective coatings, particularly of electronic devices. The invention concerns fired-on-foil ceramic capacitors coated with a composite encapsulant and embedded in a printed wiring board.Type: GrantFiled: June 18, 2008Date of Patent: January 22, 2013Assignee: CDA Processing Limited Liability CompanyInventors: John D. Summers, Thomas Eugene Dueber
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Publication number: 20130004679Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: ApplicationFiled: September 14, 2012Publication date: January 3, 2013Applicant: ROLIC AGInventors: Thomas BACHELS, Zoubair Mohammed CHERKAOUI, Guy MARCK, Olivier MULLER, Joachim REICHARDT, Andreas SCHUSTER, Hubert SEIBERLE, Peggy STUDER, Thomas PEGLOW, Jean-Francois ECKERT
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Patent number: 8334359Abstract: A polyamide modified by a compound including at least one hydroxyl group, as well as to a method for preparing such a polyamide, and articles obtained from such a polyamide are described. A polyamide modified by a compound comprising at least one aromatic hydroxyl group and chemically bonded to the polymer chain, obtained by the polymerization of polyamide monomers with at least one difunctional hydroxyaromatic compound in which both functions can react with an amino function is also described.Type: GrantFiled: September 25, 2009Date of Patent: December 18, 2012Assignee: Rhodia OperationsInventors: Franck Touraud, Stéphane Jeol
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Publication number: 20120309925Abstract: [Problem to be Solved] A polyphenylene ether is provided which can effectively suppress the occurrence of black foreign matters, and is excellent in the electric characteristics and the appearance characteristic. [Solution] A polyphenylene ether is provided which has a content of a metal magnetic material of 0.001 ppm or higher and lower than 1.000 ppm.Type: ApplicationFiled: February 24, 2011Publication date: December 6, 2012Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Tomohiro Kondo, Akinobu Nagai, Akira Mitsui
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Publication number: 20120287390Abstract: Disclosed is a liquid crystal alignment agent that includes a polymer comprising polyamic acid including a structural unit represented by the following Chemical Formula 1, polyimide including a structural unit represented by the following Chemical Formula 2, or a combination thereof. In Chemical Formulas 1 and 2, each X1, X2, Y1 and Y2 is the same as in the detailed description.Type: ApplicationFiled: January 19, 2012Publication date: November 15, 2012Applicant: CHEIL INDUSTRIES INC.Inventors: Eun-Ha KIM, Jae-Deuk YANG, Yong-Sik YOO, Myoung-Youp SHIN, Guk-Pyo JO
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Patent number: 8304508Abstract: A fluorine-containing dicarboxylic acid represented by formula (1), wherein n represents an integer of 1-4, and the two carboxylic groups are not adjacent to each other on the aromatic ring. It is possible to obtain a linear polymer compound by reacting the fluorine-containing dicarboxylic acid with a comonomer (e.g., diaminodiol). By thermal cyclization, this linear polymer compound can be converted into another polymer compound having superior characteristics.Type: GrantFiled: August 1, 2011Date of Patent: November 6, 2012Assignee: Central Glass Company, LimitedInventors: Satoru Narizuka, Yuji Hagiwara, Masashi Nagamori, Kazuhiro Yamanaka
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Patent number: 8242230Abstract: Sterically hindered phenol and phosphite based compounds, represented by formula I: and their use as antioxidants in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.Type: GrantFiled: May 17, 2011Date of Patent: August 14, 2012Assignee: Polnox CorporationInventors: Ashok L. Cholli, Rajesh Kumar
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Publication number: 20120190801Abstract: 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: ApplicationFiled: September 23, 2011Publication date: July 26, 2012Applicant: 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: 20120172522Abstract: Disclosed is a liquid crystal alignment agent that includes a polymer comprising 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 in the detailed description.Type: ApplicationFiled: September 21, 2011Publication date: July 5, 2012Applicant: CHEIL INDUSTRIES INC.Inventors: Myoung-Youp SHIN, Eun-Ha KIM, Jae-Deuk YANG, Yong-Sik YOO, Guk-Pyo JO, Jung-Gon CHOI
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Publication number: 20120165495Abstract: The invention provides biocompatible resorbable polymers, comprising monomer units having formula (I), formula (II), formula (III) or formula (IV). The polymers degrade over time when implanted in the body, and are useful as components of implantable medical devices.Type: ApplicationFiled: March 7, 2012Publication date: June 28, 2012Applicant: TYRX, Inc.Inventors: Arikha Moses, Satish Pulapura, Arthur Schwartz, Qing Ge, Irene Shatova
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Publication number: 20120108693Abstract: The present invention relates to polyarylene ether block copolymers according to the general formula A-K-X-K-A, where —X— is a polyarylene ether segment with number-average molar mass of at least 5000 g/mol, and A— is a segment of the general structure R2NH—(R1—NH—CO—Ar—CO—NH)n—R1—NH—, in which R1 is a linear or branched alkylene group having from 2 to 12 carbon atoms and Ar is an arylene group having from 6 to 18 carbon atoms, and R2 is selected from aryloyl, alkyloyl, and H, and in which the number average of n is from 1 to 3, and there is a coupling group K of the structure —CO—Ar3—CO— linking each A to X, in which Ar3 is an aromatic group having from 6 to 18 carbon atoms. The present invention also relates to a process for the production of the polyarylene ether block copolymers of the invention, to polymer compositions comprising the polyarylene ether block copolymers of the invention, and also to the use thereof for the production of moldings, of films, of fibers, or of foams.Type: ApplicationFiled: May 31, 2010Publication date: May 3, 2012Applicant: BASF SEInventors: Cecile Gibon, Martin Weber, Reinoud J. Gaymans, Ranimol Stephen
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Patent number: 8147863Abstract: Biocompatible polyarylates of diphenol compounds and poly(alkylene oxide) dicarboxylic acids, articles formed therefrom and therapeutic uses are disclosed.Type: GrantFiled: May 5, 2010Date of Patent: April 3, 2012Assignee: Rutgers, The State University of New JerseyInventors: Joachim B. Kohn, Satish Pulapura, Arthur Schwarz, Raman Bahulekar
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Publication number: 20110282026Abstract: A fluorine-containing dicarboxylic acid represented by formula (1), wherein n represents an integer of 1-4, and the two carboxylic groups are not adjacent to each other on the aromatic ring. It is possible to obtain a linear polymer compound by reacting the fluorine-containing dicarboxylic acid with a comonomer (e.g., diaminodiol). By thermal cyclization, this linear polymer compound can be converted into another polymer compound having superior characteristics.Type: ApplicationFiled: August 1, 2011Publication date: November 17, 2011Applicant: CENTRAL GLASS COMPANY, LIMITEDInventors: Satoru NARIZUKA, Yuji Hagiwara, Masashi Nagamori, Kazuhiro Yamanaka
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Publication number: 20110245450Abstract: A polyamide modified by a compound including at least one hydroxyl group, as well as to a method for preparing such a polyamide, and articles obtained from such a polyamide are described. A polyamide modified by a compound comprising at least one aromatic hydroxyl group and chemically bonded to the polymer chain, obtained by the polymerisation of polyamide monomers with at least one difunctional hydroxyaromatic compound in which both functions can react with an amino function is also described.Type: ApplicationFiled: September 25, 2009Publication date: October 6, 2011Applicant: Rhodia OperationsInventors: Franck Touraud, Stéphane Jeol
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Patent number: 8013103Abstract: Disclosed herein are polymer compounds, a method for preparing thereof. More specifically, provided are polymer compounds with well-connected, narrow size distribution free-volume element and a method for preparing the polymer compounds by thermal rearrangement for aromatic polyimides containing ortho-positioned functional groups in the solid state.Type: GrantFiled: October 10, 2008Date of Patent: September 6, 2011Assignee: Industry-University Cooperation Foundation, HANYANG UNIVERSITYInventors: Young-Moo Lee, Sang-Hoon Han, Chul-Ho Jung, Ho-Bum Park
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Patent number: 7999059Abstract: The invention relates to an optical film containing aromatic polymer which shows high solubility to solvents, and methods for production thereof. Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The optical film may be attained by using polyester with a specific structure. The polyester with a specific structure may be obtained by condensation polymerization of bisphenol compound(s) and dicarboxylic acid compound(s) with biphenyl structure, and preferably has no halogen atom in its chemical structure. The optical film of the invention advantageously has not only high solubility in solvents but also a high level of heat resistance and birefringence producing capability. When the content of the biphenyl structure is high, the optical film of the invention can also have large wavelength dispersion of birefringence.Type: GrantFiled: November 6, 2008Date of Patent: August 16, 2011Assignee: Nitto Denko CorporationInventors: Tomoyuki Hirayama, Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu
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Patent number: 7968670Abstract: Disclosed is a polyimide resin, which is colorless and transparent and has superior properties, including mechanical properties and heat stability, and thus is usable in various fields, including semiconductor insulating films, TFT-LCD insulating films, transparent electrode films, passivation films, liquid crystal alignment layers, optical communication materials, protective films for solar cells, and flexible display substrates. Also, a liquid crystal alignment layer and a polyimide film using the polyimide resin are provided.Type: GrantFiled: December 13, 2007Date of Patent: June 28, 2011Assignee: Kolon Industries, Inc.Inventors: Hak Gee Jung, Sang Wook Park, Hyo Jun Park
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Patent number: 7956153Abstract: Sterically hindered phenol and phosphite based compounds represented by structural formula II: and their use as antioxidants in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.Type: GrantFiled: May 28, 2010Date of Patent: June 7, 2011Assignee: Polnox CorporationInventors: Ashok L. Cholli, Rajesh Kumar
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Publication number: 20110046277Abstract: The present invention relates to polyimide or precursor thereof represented by Chemical Formula 1 or 2 and a photosensitive resin composition including the same. The polyimide or precursor thereof are fabricated using diamine comprising polyalkyleneoxide. The photosensitive resin composition of the present invention has excellent light transmissivity, an excellent resolution, and excellent photo sensitivity and image forming performance. Further, the photosensitive resin composition has high adhesiveness with substrates, such as a silicon film, a silicon oxide film, and a metal film. In particular, an excellent film without failure, such as crack, can be formed.Type: ApplicationFiled: August 23, 2010Publication date: February 24, 2011Applicant: LG CHEM. LTD.Inventors: Jung Ho JO, Kyung Jun KIM, Hye Ran SEONG, Hye Won JEONG, Chan Hyo PARK, Yu Na KIM, Sang Woo KIM, Se Jin SHIN, Kyoung Ho AHN
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Publication number: 20100297456Abstract: Disclosed is a diamine represented by a general formula of: wherein X is an ester bond, each of m and n is independently a natural number, each of p and r is independently 0 or 1, q is an integer of 0 or more, a sum of m, n, and q is 20 or less, and when q is 0, p is 1 and r is 0.Type: ApplicationFiled: May 24, 2010Publication date: November 25, 2010Applicant: RICOH COMPANY, LTD.Inventors: Takanori Tano, Koei Suzuki, Yusuke Tsuda
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Patent number: 7794706Abstract: The present invention provides wound dressings, optionally surgically implantable, containing biodegradable, polymers and hydrogels having allogenic or autologous precursor cells, such as stem cells and progenitor cells dispersed within. Alternatively, the wound dressings can have conditioned medium obtained from the precursor cells dispersed within. The wound dressings promote tissue restoration processes at a site of application or implantation. Additional bioactive agents can also be dispersed within the polymer/hydrogel matrix, which can be formulated to biodegrade at a controlled rate by adjusting the composition. Methods are also provided for using such biodegradable wound dressings as a delivery device or carrier for the precursor cells, conditioned medium and bioactive agents, or as coatings on implantable medical devices, to promote tissue restoration at a lesion site.Type: GrantFiled: April 26, 2007Date of Patent: September 14, 2010Assignee: Medivas, LLCInventors: Kenneth W. Carpenter, William G. Turnell, Kristin M. DeFife, Kathryn A. Grako, Ramaz Katsarava