Solid Polymer Derived From Compound Containing More Than Two Amine Groups Patents (Class 525/435)
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Patent number: 8263732Abstract: [Object] To obtain an alignment film having excellent alignment stability of a liquid crystal and a high voltage holding ratio by application of linearly polarized light to a polyamic acid having a specific structure and then imidization under heat. [Solving Means] A photo-alignment film is obtained by: applying a polyamic acid solution on a substrate, where the polyamic acid contains, in its main chain, at least a group having unsaturated groups having 1 to 3 carbon-carbon double bonds or 1 to 4 triple bonds; vaporizing a solvent from a film formed; applying linearly polarized light to the film after the vaporization of the solvent; and then heating the film to imidize the polyamic acid.Type: GrantFiled: March 12, 2007Date of Patent: September 11, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventor: Norio Tamura
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Publication number: 20120225926Abstract: The invention provides amphiphilic macromolecules that are useful for delivering nucleic acids to cells and that are useful as delivery agents for gene therapy.Type: ApplicationFiled: February 22, 2012Publication date: September 6, 2012Inventors: Kathryn E. Uhrich, Sarah M. Sparks, Li Gu, Alex Harmon, Charles M. Roth, Carolyn Waite
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Publication number: 20120164556Abstract: Crosslinked polybenzoxazines obtained by crosslinking a monofunctional first benzoxazine monomer and a multifunctional second benzoxazine monomer with a crosslinkable compound, an electrolyte membrane including the same, a method of preparing the electrolyte membrane, a fuel cell including the electrolyte membrane having the crosslinked polybenzoxazines using the method. The crosslinked polybenzoxazines have strong acid trapping capability, improved mechanical properties, and excellent chemical stability as it does not melt in polyphosphoric acid. Even as the amount of impregnated proton carrier and the temperature are increased, mechanical and chemical stability is highly maintained, and thus the electrolyte membrane can be effectively used for fuel cells at a high temperature.Type: ApplicationFiled: February 28, 2012Publication date: June 28, 2012Applicant: SAMSUNG SDI CO., LTD.Inventors: Seong-woo CHOI, Hee-young SUN, Woo-sung JEON
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Patent number: 8167983Abstract: The present invention relates to compositions for producing membranes, the compositions comprising at least 0.1% by weight of highly branched polymer, at least 0.5% by weight of linear polymer and at least 30% by weight of solvent. The present invention additionally describes membranes obtainable from the compositions, and methods of producing these membranes.Type: GrantFiled: December 17, 2007Date of Patent: May 1, 2012Assignee: Evonik Degussa GmbHInventors: Matthias Seiler, Stefan Bernhardt, Rolf Schneider, Roland Wursche, Franz-Erich Baumann
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Publication number: 20120094102Abstract: The invention relates to an optically transparent polymer film or extrudate product made of a polymer composition comprising a semi-crystalline polyamide having a melting temperature of at least 270° C. or a blend of the semi-crystalline polyamide (A) and a second polymer (B), and optionally at least one additive, wherein the semi-crystalline polyamide (A) is present in an amount of more than 50 wt. %, relative to the total weight of the polymer composition, the polymer composition in the optically transparent polymer film or extrudate product has a melting temperature (Tm-C) in the range of 270-340 ° C., and wherein the film or a part of the extrudate product has a haze of less than 12% and a light transmittance, of at least 88% measured with the method according to ASTM D1003A.Type: ApplicationFiled: January 15, 2010Publication date: April 19, 2012Inventors: Alexander Antonius Maria Stroeks, Rudy Rulkens, Lee Sanghoon, Sidiki Tamim Peter
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Publication number: 20120071611Abstract: A crosslinked object of a polybenzoxazine-based compound formed of a polymerized resultant of a first monofunctional benzoxazine-based monomer or a second multifunctional benzoxazine-based monomer with a crosslinkable compound, an electrolyte membrane including the crosslinked object, a method of preparing the electrolyte membrane, and a fuel cell employing the electrolyte membrane including the crosslinked object.Type: ApplicationFiled: September 23, 2011Publication date: March 22, 2012Applicant: SAMSUNG SDI CO., LTD.Inventors: Seong-woo CHOI, Hee-Young Sun, Myung-lin Lee, Woo-Sung Jeon
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Publication number: 20120035334Abstract: A method for preparing a carboxylic polybenzimidazole includes reacting a polybenzimidazole polymer with a cyclic acid anhydride to form the carboxylic polybenzimidazole.Type: ApplicationFiled: May 11, 2011Publication date: February 9, 2012Applicant: Chang Gung UniversityInventors: Mu-Yi Hua, Hsiao-Chien Chen, Rung-Ywan Tsai, Kong-Wei Cheng
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Publication number: 20120035333Abstract: A carboxylic polybenzimidazole includes at least one of the following functional group of formula (I): wherein G is a group containing a carboxylic acid end group or a carboxylated end group.Type: ApplicationFiled: May 11, 2011Publication date: February 9, 2012Applicant: Chang Gung UniversityInventors: Mu-Yi Hua, Hsiao-Chien Chen, Rung-Ywan Tsai, Lee-Yih Wang
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Publication number: 20110311817Abstract: Disclosed are a gene carrier in which polyethyleneglycol is conjugated with polyethyleneimine and a method for the synthesis thereof. The gene carrier is useful in transferring DNA, siRNA and negatively charged peptides.Type: ApplicationFiled: October 1, 2009Publication date: December 22, 2011Applicant: Postech Academy-Industry FoundationInventors: Won Jong Kim, Ran Namgung
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Publication number: 20110263727Abstract: A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containing moiety may include RCO—, where R is alkoxy or haloalkyl. The PBI compound may exhibit a first temperature marking an onset of weight loss corresponding to reversion of the substituted PBI that is less than a second temperature marking an onset of decomposition of an otherwise identical PBI compound without the substituted moiety. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may use more than 5 equivalents in relation to the imidazole nitrogens to be substituted.Type: ApplicationFiled: November 1, 2007Publication date: October 27, 2011Inventors: John R. Klaehn, Eric S. Peterson, Christopher J. Orme, Michael G. Jones, Alan K. Wertsching, Thomas A. Luther, Tammy L. Trowbridge
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Publication number: 20110189581Abstract: A compound having an amino group at a terminal thereof and at least one amino group in a repeating unit, a cross-linked material of the compound, a double cross-linked polymer thereof, an electrolyte membrane and an electrode for a fuel cell, which include the cross-linked material of the compound or the double cross-linked polymer thereof, and a fuel cell including at least one of the electrolyte membrane and the electrode.Type: ApplicationFiled: February 3, 2011Publication date: August 4, 2011Applicants: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Seong-woo CHOI, Jong-chan Lee, Jung-ock Park, Sung-kon Kim, Jung-woo Jung
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Publication number: 20110160407Abstract: Novel semi-aromatic polyamideimides are prepared by melt polymerization of at least one organic compound having carboxyl groups, of at least one diamine compound and, optionally, of at least one diacid compound; such novel polyamideimides are formulated into compositions based on a thermoplastic matrix.Type: ApplicationFiled: June 5, 2009Publication date: June 30, 2011Applicant: RHODIA OPERATIONSInventors: Franck Touraud, Veronique Bossennec, Stephane Jeol
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Publication number: 20110144286Abstract: Nucleic acid material can be effectively separated from a fluid by first contacting the fluid with a positively charged polymer which binds the nucleic acid material. Thereafter, the polymer, having the nucleic acid material bonded thereto, is contacted with a releasing agent which comprises a solution of an alkaline material and a glycol. The solution has a pH of no more than 12 and operates to release the nucleic acid material from the polymer under relatively low temperature conditions, typically no more than 50° C., and in particular instances, no more than 40° C. The glycol material may comprise a monomeric glycol such as ethylene glycol, propylene glycol, or the like, or it may comprise a polymeric glycol such as polyethylene glycol. Also disclosed is a novel positively charged polymer which may be employed in the separation process. This polymer comprises an acidified polyamine, such as polyethyleneimine which has been reacted with a nonacidified polyethyleneimine in a coupling reaction.Type: ApplicationFiled: December 13, 2010Publication date: June 16, 2011Inventor: Betty Wu
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Publication number: 20110109855Abstract: A polyamic acid and a polyimide obtained by reacting a dianhydride and diamines. A substrate having a film of such polyimide or polyamic acid deposited thereon. A liquid crystal display containing a film of such polyimide as an alignment layer. A method for reducing the response times of a liquid crystal display and/or for improving the on-state- and off-state-transmission and/or the voltage holding ratio of a liquid crystal display, the method involving incorporating the polyimide as an alignment layer in the liquid crystal display. A method of producing a liquid crystal display involving depositing a film of the polyimide on a substrate.Type: ApplicationFiled: October 5, 2010Publication date: May 12, 2011Applicant: SONY CORPORATIONInventors: Pinar KILICKIRAN, Zakir HUSSAIN, David DANNER, Akira MASUTANI, Gabriele NELLES, Shunichi SUWA, Yuichi INOUE, Shuichi SHIMA
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Publication number: 20110104417Abstract: The present invention provides high temperature compositions comprising blends of a first polymer, poly(aryl ether ketone phthalazinone)s, and a second polymer, selected from poly(aryl ether ketone)s, poly(aryl ketone)s, poly(ether ether ketone)s, poly(ether ketone ketone)s, or polybenzimidazoles, thermoplastic polyimides, polyetherimides, poly(aryl ether sulfone)s, poly(phenylene sulfide)s, and mixtures thereof. The compositions have improved high temperature characteristics, e.g., improved high temperature load capability and improved high temperature melt processibility.Type: ApplicationFiled: October 29, 2010Publication date: May 5, 2011Applicant: POLYMICS, LTD.Inventors: Yi-Feng Wang, Tim Hsu, Allan S. Hay, Kun Li, Bhavin Patel
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Publication number: 20110105698Abstract: This invention provides alignment materials for liquid crystal display device of vertical alignment mode and methods for the preparation of the same, and more particularly, it provides diaminobenzene derivatives represented by the following formula 1 (shown in description), capable of aligning liquid crystal in uniform and vertical way and remarkably improving clarity and solubility against organic solvents, methods for the preparation of the same and liquid crystal alignment films using the same.Type: ApplicationFiled: February 9, 2007Publication date: May 5, 2011Applicant: DONGJIN SEMICHEM Co., Ltd.Inventors: Jin wook Choi, Dal bong Seo, Jae cheol Park, Yong bae Kim
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Patent number: 7915351Abstract: A process for producing a solution blend of a polybenzimidazole (PBI) and a polyetherketoneketone (PEKK). The PBI is mixed with sulfuric acid at a temperature between 40° C. and 80° C. for 30 minutes to 2 hours to produce a PBI solution then cooled to room temperature to form a cooled PBI solution. Then PEKK is added to the cooled PBI solution to form a mixture and that mixture is stirred from 30 minutes to 2 hours at room temperature to form a stirred mixture. The stirred mixture is poured into an excess of water being stirred swiftly to form an aqueous mixture. The aqueous mixture is filtered to produce a blend. The blend is washed with water and dried. The resulting blend can yield a blend in all proportion from 1/99 PBI/PEKK to 99/1 PBI/PEKK.Type: GrantFiled: February 5, 2007Date of Patent: March 29, 2011Assignee: PBI Performance Products, Inc.Inventors: Bobby G. Dawkins, Michael Gruender, Gregory S. Copeland, Tim Hsu
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Publication number: 20110060109Abstract: A fluoropolyether base rubber composition comprising (a) a linear fluoropolyether compound containing at least two ester groups in a molecule and a divalent perfluoroalkyl ether structure in its backbone, and having a Mn of 3,000-100,000, and (b) a siloxane polymer containing at least three amino groups in a molecule cures at room temperature into a product having heat resistance, low-temperature performance, chemical resistance, solvent resistance and oil resistance.Type: ApplicationFiled: September 2, 2010Publication date: March 10, 2011Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Mitsuo MUTO, Takashi MATSUDA, Mikio SHIONO
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Publication number: 20100305683Abstract: The present invention refers to medical devices comprising a modified Co-Polymer or to the modified Co-Polymer itself having high flexibility and high stress resistance, especially tensile strength or tear resistance, in addition to the good physical characteristics of a Block-Co-Polymers of a polyamide and a polycarbonate, either polycarbonate diol or polycarbonate diamine.Type: ApplicationFiled: May 9, 2008Publication date: December 2, 2010Applicant: ABBOTT LABORATORIES VASCULAR ENTERPRISES LIMITEDInventor: Günter Lorenz
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Patent number: 7842756Abstract: A copolymer and a process of making the copolymer are disclosed. The copolymer is produced from reacting a glycidyl ester and/or ether with a polyol comprising a functionality of at least 2 wherein at least 50% by weight of the copolymer comprises a minimum of 3n+X repeating units, wherein n is a monomer unit and X is a monomer unit and/or other reactant. The copolymer may also include less than 50% of the polymeric units having the same molecular weight. The present invention is further directed to processes for preparing the copolymer and to coating compositions employing the copolymer.Type: GrantFiled: March 17, 2008Date of Patent: November 30, 2010Assignee: PPG Industries Ohio, Inc.Inventors: Jonathan T. Martz, Erick B. Iezzi
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Patent number: 7820767Abstract: The present invention relates to a new aromatic polyimide composition containing an aromatic polyimide and a polyarylene of a specific type, and to articles and parts of articles made thereof.Type: GrantFiled: March 6, 2007Date of Patent: October 26, 2010Assignee: Solvay Advanced Polymers, L.L.C.Inventors: Mohammad Jamal El-Hibri, Leslie J. Myrick, David B. Thomas, Roy L. Carter, Nikica Maljkovic, Christopher Davis, Scott A. Harding
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Publication number: 20100204414Abstract: Disclosed are coating compositions comprising polycarbodiimides having onium salt groups, as well as relating methods and coated substrates.Type: ApplicationFiled: February 12, 2009Publication date: August 12, 2010Applicant: PPG Industries Ohio, Inc.Inventors: Anthony M. Chasser, Lawrence J. Fitzgerald, Venkateshwarlu Kalsani
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Publication number: 20100122785Abstract: The invention provides a composition of matter used to produce very soft high grades of tissue paper. The composition of matter comprises a PAE resin acidified with a multifunctional acid. The multifunctional acid includes but is not limited to carboxyl and sulfonyl. The acid has a functional group selected from carboxyl and sulfonyl and a functional group selected from carboxyl, sulfonyl, hydroxyl, lactone, phenol, amine and heterocycle. The PAE resin facilitates the use of an adhesive in a Yankee Dryer apparatus that is durable when the adhesive is wet but remains soft when the adhesive becomes dry. These properties allow the adhesive to be strong and remain engaged to the dryer apparatus when wet but be easily removed by the creping blade when dry.Type: ApplicationFiled: November 18, 2008Publication date: May 20, 2010Inventors: Vladimir A. Grigoriev, Gary S. Furman, JR., Mingli Wei, Winston Su, Christopher D. Kaley, Bryan M. Schertzer
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Publication number: 20100105812Abstract: The invention relates to a copolyamide containing at least two patterns (monomers) and of the following general formula A/(Cz diamine)·(Cw diacid) in which: z is the number of carbon atoms of the diamine and w is the number of carbon atoms of the diacid; and A is selected from a pattern obtained from an amino acid and a pattern of the general formula (Cx diamine)·(Cy diacid)y, wherein x is the number of carbon atoms of the diamine and y is the number of carbon atoms of the diacid, the amino acid, each diamine and each diacid being obtained from a renewable raw material according to ASTM D6866 standard. The invention also relates to a composition containing the copolyamide and to the use of this copolyamide and of such a composition, essentially for producing thermofusable glues, in any form thereof.Type: ApplicationFiled: February 15, 2008Publication date: April 29, 2010Applicant: ARKEMA FRANCEInventors: Philippe Bussi, Heike Faulhammer, Guillaume Le, Quentin Pineau
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Publication number: 20100071557Abstract: The present invention relates to compositions for producing membranes, the compositions comprising at least 0.1% by weight of highly branched polymer, at least 0.5% by weight of linear polymer and at least 30% by weight of solvent. The present invention additionally describes membranes obtainable from the compositions, and methods of producing these membranes.Type: ApplicationFiled: December 17, 2007Publication date: March 25, 2010Applicant: Evonik Degussa GmbHInventors: Matthias Seiler, Stefan Bernhardt, Rolf Schneider, Roland Wursche, Franz-Erich Baumann
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Patent number: 7629420Abstract: A polymer blend comprises PBI, PAEK, and PEI. A method of making the foregoing blend comprises the steps of intimately blending PBI, PAEK, and PEI by dissolving PBI, PAEK, and PEI in a strong acid or melt blending PBI, PAEK, and PEI.Type: GrantFiled: February 6, 2007Date of Patent: December 8, 2009Assignee: PBI Performance Products, Inc.Inventors: Bobby G. Dawkins, Michael Gruender, Gregory S. Copeland, Jerry Zucker
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Publication number: 20090255063Abstract: Disclosed are polymeric dyes of formula (1a); (1b); or (1c); wherein A and B, independently from each other represent a polymer backbone; X1 and X2 independently from each other are a linkage group selected from —C1-C10alkylene-; —C2-C12alkenylene-; —C5-C10cycloalkylene-; C5-C10arylene; —C5-C10arylene-(C1-C10alkylene)-; —C(O)—; —(CH2CH2—O)1-5—; —C(O)O—; —OCO—; —N(R1)—; —CON(R1)—; —(R1)NC(O)—; -0-; —S—; —S(O)—; —S(O)2—; —S(O)2—N(R1R2); or the direct bond; R1 and R2 independently from each other are hydrogen; or unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C1-C14alkyl; C2-C14alkenyl; C6-C10aryl; C6-C10aryl-C1-C10alkyl; or C5-C10alkyl(C5-C10aryl); Y1 and Y2 independently from each other are a residue of an organic dye; or hydrogen; wherein at least one of Y1 and Y2 is a residue of an organic dye; An1, An2 and An3, independently from each other are an anion; a and b independently from each other are a number from 1 to 3; m is a number from O to 1Type: ApplicationFiled: July 9, 2007Publication date: October 15, 2009Inventors: Sophie Marquais-Bienewald, Olof Wallquist, Christian Cremer, Beate Fröhling, Andreas Möck
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Publication number: 20090234079Abstract: The present invention relates to novel adducts useful for improving the toughness and curable compositions using such toughening adducts. In a particular aspect, the present invention relates to novel toughening adducts and curable compositions having improved fracture toughness using those toughening adducts.Type: ApplicationFiled: March 24, 2009Publication date: September 17, 2009Applicants: Loctile (R&D) Limited, Henkel AG & Co. KGaAInventors: Barry N. Burns, Ray P. Tully, Jonathan P. Wigham, Martin J. Fitzpatrick, Rainer Schoenfeld, Ciaran B. McArdle, Mark Loane
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Publication number: 20090171038Abstract: The invention relates to crosslinkable, thermoplastic polyamide molding compounds. The polyamides are selected from a group comprising amorphous or microcrystalline polyamides, copolyamides thereof and blends thereof, as well as blends of such polyamides with semicrystalline polyamides. A polyamide molding compound according to the invention is characterized in that it comprises a crosslinking additive which causes the production of crosslinked molded parts formed from said polyamide molding compound under the effect of high-energy irradiation, having a Tg value of >140° C. and a minimum dimensional stability of 90% at temperatures of ?180° C. These polyamides have a substantially linear structure and the monomers thereof have no olefin C?C double bonds. Corresponding crosslinked polyamide molded parts produced from a polyamide molding compound and the use of this polyamide molding compound to produce these crosslinked polyamide molded parts are additionally disclosed.Type: ApplicationFiled: December 15, 2006Publication date: July 2, 2009Applicant: EMS-PATENT AGInventor: Klaus-Jurgen Steffner
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Publication number: 20090105415Abstract: An amphiphilic polymer having the following formula (I): wherein Z is a hydroxyl-substituted aliphatic group derived from a sugar moiety and having formula (Z1) or (Z2): wherein R11 and R21 are independently hydrogen, hydroxyl, hydroxymethyl, methyl, or a C1-C20 alkyl group; R12, R13, R14, R22, R23, and R24 are independently hydrogen, hydroxyl, or a sugar moiety; X is a C1-C6 divalent aliphatic group; and Y is a biodegradable polyester block having a repeating unit represented by the following formula (II): wherein, in each repeating unit, R is hydrogen or a C1-C18 alkyl group, m is an integer ranging from 0 to 5, and n is an integer ranging from 10 to 300. A method for preparing the amphiphilic polymer is also disclosed.Type: ApplicationFiled: August 15, 2008Publication date: April 23, 2009Inventors: Chia-Chang LIU, Ken-Yuan Chang, Fa-Chen Chi
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Publication number: 20090098437Abstract: A polybenzimidazole-base complex includes a polybenzimidazole-based material and a base, wherein a peak corresponding to NH of an imidazole ring of the polybenzimidazole-based material does not appear at a chemical shift of 12 to 15 ppm in a 1H nuclear magnetic resonance (1H-NMR) spectrum of the polybenzimidazole-base complex. A crosslinked material may be formed as a polymerization product of a polybenzimidazole-base complex and a benzoxazine-based monomer. The crosslinked material may be used an electrolyte membrane for a fuel cell comprising the crosslinked material, and a fuel cell may include the electrolyte membrane.Type: ApplicationFiled: October 8, 2008Publication date: April 16, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Seongwoo CHOI, Woosung Jeon, Insun Jung, Wonmok Lee
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Patent number: 7425594Abstract: A copolymer and a process of making the copolymer are disclosed. The copolymer is produced from reacting a glycidyl ester and/or ether with a polyol comprising a functionality of at least 2 wherein at least 50% by weight of the copolymer comprises a minimum of 3n+X repeating units, wherein n is a monomer unit and X is a monomer unit and/or other reactant. The copolymer may also include less than 50% of the polymeric units having the same molecular weight. The present invention is further directed to processes for preparing the copolymer and to coating compositions employing the copolymer.Type: GrantFiled: November 23, 2005Date of Patent: September 16, 2008Assignee: PPG Industries Ohio, Inc.Inventors: Jonathan T. Martz, Stephen J. Thomas
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Publication number: 20080188628Abstract: A polymer blend comprises PBI, PAEK, and PEI. A method of making the foregoing blend comprises the steps of intimately blending PBI, PAEK, and PEI by dissolving PBI, PAEK, and PEI in a strong acid or melt blending PBI, PAEK, and PEI.Type: ApplicationFiled: February 6, 2007Publication date: August 7, 2008Inventors: Bobby G. Dawkins, Michael Gruender, Gregory S. Copeland, Jerry Zucker
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Patent number: 7285325Abstract: An acid-doped, single-layer or multilayer polymer membrane comprising at least one layer A of a polymer blend with contains: a) from 0.1 to 99.9% by weight of one or more polymers comprising recurring azole units of the formula 1A and/or 1B: wherein the radicals Ar, Ar1, and Ar2 are tetravalent, divalent or trivalent aromatic or heteroaromatic groups and the radicals X are each and oxygen atom, a sulfur atom or an amino group bearing a hydrogen atom, a 1-20 carbon group, in admixture with b) from 99.9 to 0.1% by weight of a polysulfone containing recurring unit having no sulfonic acid groups.Type: GrantFiled: October 20, 2001Date of Patent: October 23, 2007Assignee: BASF Fuel Cell GmbHInventors: Thomas Soczka-Guth, Joachim Kiefer, Frauke Jordt
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Patent number: 7199174Abstract: This invention relates to a composition for repairing metallic articles which in its initial state is in the form of an adhesive, self-supporting putty, capable of being molded including 5–15% by weight of a sacrificial binder containing at least one acrylic resin and volatile solvent. The invention also relates to a kit for the composition and methods for repair.Type: GrantFiled: February 3, 2006Date of Patent: April 3, 2007Assignee: Liburdi Engineering LimitedInventors: Keith Ellison, Joseph Liburdi
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Patent number: 7034088Abstract: An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid-dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene-terephthalamide, -isophthalamide and -1,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e.g., fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.Type: GrantFiled: August 24, 2004Date of Patent: April 25, 2006Assignee: Invista North Americal S.AR.L.Inventors: Yanhui Sun, Jun Zhao
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Patent number: 6939539Abstract: The present invention relates to an improved composition of copolymer-1 comprising copolymer-1 substantially free of species having a molecular weight of over 40 kilodaltons.Type: GrantFiled: July 10, 2003Date of Patent: September 6, 2005Assignee: Yeda Research & DevelopmentInventors: Eliezer Konfino, Michael Sela, Dvora Teitelbaum, Ruth Arnon
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Patent number: 6908983Abstract: The present invention contemplates a process for forming polyaminoamide polymers formed by the reaction of a dibasic acid/ester with excess amounts of an amine; the intermediate polymer resulting therefrom; a process for synthesizing effective, high solids resins resulting from the reaction of intermediate polymers with an epihalohydrin; and the resultant high, solids resin. These resins may be used as wet strength resins in the papermaking industry.Type: GrantFiled: April 1, 2003Date of Patent: June 21, 2005Assignee: Hercules CorporationInventor: William W. Maslanka
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Publication number: 20040254306Abstract: The invention provides a humidity-sensitive element using, as a humidity-sensitive film, a polyimide having a molecular structure capable of forming a network structure at a high density, exhibiting less drift after being left standing at a high temperature and a high humidity and having excellent characteristics. A humidity-sensitive element according to the invention uses the polyimide obtained by dehydrating and ring closing a polyamide acid forming a network structure in which terminals of basic molecular chains are interconnected with one another, as a humidity-sensitive film. The humidity-sensitive element of the invention suitably uses a polyimide, in which terminals of basic molecular chains are interconnected with one another by use of triamine or a tricarboxylic acid, as a humidity sensitive film.Type: ApplicationFiled: June 10, 2004Publication date: December 16, 2004Applicant: DENSO CORPORATIONInventors: Toshiki Isogai, Takahiko Yoshida, Inao Toyoda
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Patent number: 6767988Abstract: Polyamide elastomer comprising a hard segment derived from polyamide having no divalent aromatic group and a soft segment derived from polycarbonate diol having no divalent aromatic group has high flexibility and high heat resistance in addition to good physical characteristics of the known polyamide elastomers.Type: GrantFiled: April 23, 2002Date of Patent: July 27, 2004Assignee: UBE Industries, Ltd.Inventors: Hiroshi Okushita, Tadao Muramatsu
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Publication number: 20040028976Abstract: The invention relates to a modified polybenzimidazole (PBI), membranes that are fabricated from these polymers, and their use in electrochemical applications. These membranes have high ionic conductivity and are suitable for solid polymer electrolytes in electrochemical applications, especially for high temperature polymer electrolyte membrane (PEM) fuel cells.Type: ApplicationFiled: August 7, 2002Publication date: February 12, 2004Inventors: Israel Cabasso, Youxin Yuan, Frederick E. Johnson
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Publication number: 20040030057Abstract: The invention concerns modified polyamides, and more particularly polyamides comprising units of the type obtained by reacting a diacid on a diamine, modified by a multifunctional compound. Finished articles formed from said polyamides or from compositions based on said polyamides exhibit excellent mechanical properties, as well as a very good surface appearance. The inventive modified polyamide is obtained by mixing in melted state polyamides of different types, in the presence of a multifunctional compound.Type: ApplicationFiled: August 8, 2003Publication date: February 12, 2004Inventors: Nicolangelo Peduto, Franco Speroni, Haichun Zhang
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Patent number: 6677015Abstract: A molding composition of at least 50% by weight of a polyamine-polyamide copolymer obtained from 0.05 to 2.5% by weight of a polyamine having at least 4 nitrogen atoms and having a viscosity of at least 5 000 Pa•s at 250° C. and at a shear rate of 0.1 l/s, and having a viscosity ratio of at least 7 at 250° C., when the melt viscosities at shear rates of 0.1 l/s and 100 l/s are compared with one another, has high melt stiffness and is easy to cut, and performs well in blow molding.Type: GrantFiled: December 19, 2001Date of Patent: January 13, 2004Assignee: Degussa AGInventors: Martin Himmelmann, Wilfried Bartz, Franz-Erich Baumann, Guido Schmitz, Georg Oenbrink, Harald Haeger, Ralf Richter
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Patent number: 6677427Abstract: A polyamide, the enzymatic reaction product of at least one polyamine and diester, and processes for preparing and using the same. In addition, processes for preparing and using the enzymatic reaction product as creping adhesives and wet strength resins to make cellulose products.Type: GrantFiled: June 13, 2000Date of Patent: January 13, 2004Assignee: Hercules IncorporatedInventors: Huai N. Cheng, Qu-Ming Gu, William W. Maslanka
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Patent number: 6667384Abstract: The present invention contemplates poly(aminoamide) pre-polymers, polyamide polymers, a multi-step process for the synthesis of these pre-polymers and polymers using acrylates and at least one monomer containing at least two primary amines, and the resins resulting from the reaction of the polymers with an epihalohydrin. These resins may be used as wet strength resins and creping aids in the papermaking industry as well as surface additives for wool.Type: GrantFiled: December 27, 2001Date of Patent: December 23, 2003Assignee: Hercules IncorporatedInventors: Qu-Ming Gu, Armin Michel, Huai Nan Cheng, William W. Maslanka, Ronald R. Staib
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Patent number: 6620847Abstract: The present invention relates to an improved composition of copolymer-1 comprising copolymer-1 substantially free of species having a molecular weight of over 40 kilodaltons.Type: GrantFiled: December 14, 2001Date of Patent: September 16, 2003Assignee: Yeda Research and Development Co., Ltd.Inventors: Eliezer Konfino, Michael Sela, Dvora Teitelbaum, Ruth Arnon
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Publication number: 20030143185Abstract: The invention provides polymer conjugates of protein kinase C (PKC) inhibitors comprising a polymer, such as poly(ethylene glycol), covalently attached to a PKC inhibitor, such as a bisindolylmaleimide molecule. The linkage between the polymer and the PKC inhibitor is preferably hydrolytically degradable. The invention also includes a pharmaceutical composition comprising a polymer conjugate of a PKC inhibitor and a method of treating any condition responsive to a PKC inhibitor by administering a polymer conjugate of the invention.Type: ApplicationFiled: October 29, 2002Publication date: July 31, 2003Applicant: Shearwater CorporationInventors: Michael David Bentley, Xuan Zhao
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Patent number: 6576340Abstract: An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid-dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene-terephthalamide, -isophthalamide and -1,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e.g., fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.Type: GrantFiled: November 8, 2000Date of Patent: June 10, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Yanhui Sun, Jun Zhao
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Publication number: 20030105266Abstract: A curable resin composition of the present invention has a compound having two or more blocked isocyanate groups where the isocyanate group is blocked by a blocking agent and the dissociation temperature between the isocyanate group and the blocking agent is 140° C. or less, or a compound having two or more free isocyanate groups, and a nylon salt (I), (II) or (III), which has a specific chemical structure, and it has extremely excellent storage stability and low-temperature curing property which are compatible with each other. Also, a curable resin composition which is obtained by allowing the above composition to contain an epoxy compound is provided, so that excellent weatherability is obtained in addition to the storage stability and the low-temperature curing property.Type: ApplicationFiled: October 30, 2002Publication date: June 5, 2003Inventor: Kazuo Suga
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Patent number: 6538073Abstract: A graft copolymer suitable as a blend component or as a hot-melt adhesive, which contains the following monomer units: a) from 0.5 to 25% by weight, based on the graft copolymer, of a polyamine having at least 11 nitrogen atoms and a number-average molar mass Mn of at least 500 g/mol; and b) an equimolar combination of diamine and dicarboxylic acid as polyamide-forming monomers.Type: GrantFiled: June 26, 2000Date of Patent: March 25, 2003Assignee: Degussa AGInventors: Georg Oenbrink, Harald Haeger, Ralf Richter