From Carboxylic Acid Having Three Or More Carboxylic Acid Groups Or Derivatives Thereof, And An Organic Amine, Or From An Organic Amine Salt Of A Tri-or Higher Carboxylic Acid Patents (Class 528/350)
  • Patent number: 10796820
    Abstract: Magnet wire with corona resistant enamel insulation may include a conductor, and at least one layer of polymeric enamel insulation may be formed around the conductor. The polymeric enamel insulation may include a filler dispersed in polyimide and an additive formed by reacting an amine moiety with a formaldehyde material. The filler may include between 20 percent and 80 percent by weight of silica oxide and between 20 and 80 percent by weight of titanium oxide.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: October 6, 2020
    Assignee: Essex Group LLC
    Inventor: Allan R. Knerr
  • Patent number: 10427110
    Abstract: This invention discloses a membrane composition, a method of making, and applications for a new type of high selectivity, high plasticization-resistant and solvent-resistant, both chemically and UV cross-linked polyimide membranes. Gas permeation tests on these membranes demonstrated that they not only showed high selectivities, but also showed extremely high CO2 plasticization resistance under CO2 pressure up to 4923 kPa (700 psig). This new type of high selectivity, high plasticization-resistant and solvent-resistant, both chemically and UV cross-linked polyimide membranes can be used for a wide range of gas separations such as separations of H2/CH4, He/CH4, CO2/CH4, CO2/N2, olefin/paraffin separations (e.g. propylene/propane separation), O2/N2, iso/normal paraffins, polar molecules such as H2O, H2S, and NH3 mixtures with CH4, N2, H2, and other light gases separations. The membranes can also be used for liquid separations such as in the removal of organic compounds from water.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: October 1, 2019
    Inventors: Chunqing Liu, Howie Q. Tran
  • Patent number: 10246555
    Abstract: Provided are: an oligomer of polyimide copolymer which is an intermediate of a polyimide copolymer having excellent utility and satisfying solvent solubility, storage stability and heat resistance at high levels; a polyimide copolymer obtained therefrom; and their production methods. The oligomer of polyimide copolymer and the polyimide copolymer are obtained by copolymerizing (A) 3,3?,4,4?-biphenyltetracarboxylic dianhydride and/or 3,3?,4,4?-diphenylsulfonetetracarboxylic dianhydride with (B) at least one diamine and/or diisocyanate represented by the following Formulae (1) to (3): (wherein, X represents an amino group or an isocyanate group; R1 to R8 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and at least one of the R1 to R8 is not a hydrogen atom).
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: April 2, 2019
    Assignee: Somar Corporation
    Inventor: Yoshiyasu Takiue
  • Patent number: 9822949
    Abstract: The present invention provides a polyamide composition for a reflector having high heat resistance and good mechanical properties, having excellent adhesion to a sealing material for an LED package, and capable of retaining a high reflectance even after exposure to heat and light intended for the production process of the LED package and the environment in which the reflector is used in the LED package, when it is molded. The present invention is a polyamide composition for a reflector, containing: 30 mass % or more of a polyamide (A) having a melting point of 280° C. or higher; and 25 mass % or more of titanium oxide (B). The total content of the polyamide (A) and the titanium oxide (B) is 75 mass % or more.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: November 21, 2017
    Assignee: KURARAY CO., LTD.
    Inventors: Kozo Tamura, Takaharu Shigematsu, Shimon Kanai
  • Patent number: 9581747
    Abstract: A method for producing an optical film including a birefringence layer having a refractive index distribution that satisfies nx>nz>ny, by which productivity of an optical film becomes high because there are a few steps, and a contamination is reduced, is provided. The method for producing an optical film including a birefringence layer includes forming an applied film by applying a birefringence layer forming material containing a non-liquid crystalline material with a birefringence (?nxz) in the thickness direction thereof of 0.0007 or more directly on a shrinkable film, and forming a birefringence layer having a refractive index distribution that satisfies nx>nz>ny by shrinking the applied film through shrinking the shrinkable film.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: February 28, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Toshiyuki Iida, Motoko Kawasaki, Nao Murakami, Hiroyuki Yoshimi
  • Patent number: 9156946
    Abstract: Novel oligomers and polymers derived from the reaction of benzoxazine compounds with a mixture of thiol compounds and amine compounds are disclosed. The compositions are useful in coating, sealants, adhesive and many other applications.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: October 13, 2015
    Assignee: 3M Innovative Properties Company
    Inventor: Ilya Gorodisher
  • Patent number: 9127120
    Abstract: The invention pertains to a process for producing a glycerol tri-carboxylic acid polyester foam which comprises the steps of combining glycerol and a tri-carboxylic acid in the liquid phase to provide a reaction mixture, and keeping the reaction mixture at a temperature of between 80° C. and 130° C. from the start of the reaction until a conversion of at least 90% is obtained. The foamed polyester of the present invention is “green”, biodegradable, and non-toxic, and can be cleanly combusted. It finds application in, int. al., packaging materials, insulation materials, and materials with a short life cycle.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: September 8, 2015
    Assignee: UNIVERSITEIT VAN AMSTERDAM
    Inventors: Albert Henderikus Alberts, Gad Rothenberg
  • Patent number: 9080073
    Abstract: A partial-discharge-resistant insulating varnish has a polyamide-imide enamel varnish and an organo-silica sol that are dispersed in a solvent. The solvent has 50 to 100% by weight of ?-butyrolactone. An insulated wire has a conductor, and a partial-discharge-resistant insulation coating film formed on the surface of the conductor. The partial-discharge-resistant insulation coating film is made of the partial-discharge-resistant insulating varnish.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: July 14, 2015
    Assignee: HITACHI METALS, LTD.
    Inventors: Hideyuki Kikuchi, Yuzo Yukimori
  • Patent number: 9023976
    Abstract: The Michael reaction is employed, for example, to condense methyl acrylate with diethyl malonate to prepare the corresponding tetra-ester. Subsequent reaction with primary amines followed by thermal condensation results in spiroimides. A similar series of reaction steps can be performed starting with malonamides.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: May 5, 2015
    Inventor: Robert Bernard Login
  • Patent number: 9018343
    Abstract: Disclosed herein is a polyamide-imide copolymer film, comprising a copolymer resin in which a unit structure derived from TFDB (2,2?-bistrifluoromethyl-4,4?-biphenyl diamine), a unit structure derived from 6FDA (4,4?-(hexa-fluoroisopropylidene)diphthalic anhydride), a unit structure derived from BPDA (3,3?,4,4?-biphenyltetracarboxylic dianhydride) and a unit structure derived from TPC (terephthaloyl chloride or 1,4-benzenedicarbonyl chloride) are copolymerized, wherein the copolymer resin has a weight average molecular weight of 10,000˜400,000.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 28, 2015
    Assignee: Kolon Industries, Inc.
    Inventors: Hyo Jun Park, Hak Gee Jung
  • Patent number: 9012594
    Abstract: A method of synthesizing a biocompatible hydrogel by covalently cross-linking an effective amount of a first macromonomer including a cyclic thioester group with an effective amount of a second macromonomer including a terminal cysteine group is disclosed. In addition, the synthesis and use of the following specific cyclic thioester macromonomer that can be used in the method, as well as specific hydrogels made using this macromonomer are disclosed. The disclosed method produces a biocompatible hydrogel, while producing substantially no toxic free thiol by-product. Accordingly, the method can be used in making biomedical products, such as sutures and tissue replacement biomaterials, and for encapsulating therapeutic cells and pharmaceuticals.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: April 21, 2015
    Assignee: Northwestern University
    Inventors: Phillip B. Messersmith, Jing Su, Bi-Huang Hu
  • Publication number: 20150099830
    Abstract: Pressure sensitive adhesives produced from naturally occurring fats and oils are described. Also described are methods of producing the pressure sensitive adhesives. Generally, one or more naturally occurring fats or oils are epoxidized, and then reacted with certain alcohols or amines to thereby obtain the noted pressure sensitive adhesives.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Inventors: Carol A. KOCH, Charles R. WILLIAMS, Prakash MALLYA
  • Patent number: 8975363
    Abstract: A shock absorber is prepared from a material formed from branched molecules comprising associative groups. The branched molecules each contains at least bifunctional fragments and at least trifunctional fragments joined together by ester or thioester bridges alone or in combination with amide or urea bridges.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 10, 2015
    Assignee: Arkema France
    Inventors: Manuel Hidalgo, Nicolas Dufaure, Jean-Luc Couturier, Bruno Hemelryck
  • Patent number: 8969486
    Abstract: 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: Grant
    Filed: August 22, 2012
    Date of Patent: March 3, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Jae-Deuk Yang, Yong-Sik Yoo, Guk-Pyo Jo
  • Patent number: 8901274
    Abstract: Polyimide oligomers of the general formula: M-(Z—Y—X—Y—Z)n-M wherein n is an integer of 1 to 20; X comprises an aromatic diamine containing 2-4 aryl moieties, each of which contains 0-4 substituents; Z is independently the same as X or is a different aromatic diamine containing 1-4 aryl moieties, each of which contains 0-4 substituents; Y comprises an aromatic dianhydride containing 1-4 aryl moieties, each of which contains 0-4 substituents; and M is independently the same as Y or is a substituted or unsubstituted anhydride, a substituted or unsubstituted dianhydride, a substituted or unsubstituted bisimide, or a substituted or unsubstituted monomeric or oligomeric phthalonitrile.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: December 2, 2014
    Assignee: Lonza Group, Ltd.
    Inventors: Sajal Das, Vilas M. Chopdekar, Megan B. Casey
  • Patent number: 8877888
    Abstract: A polyamide modified by a multi-functional compound, and a method for producing said polyamide and compositions comprising same are described. A method for the production of a polyamide comprising linear macromolecular chains and star-shaped macromolecular chains is also described. A resulting polyamide having optimal mechanical and rheological properties in order to (i) improve mould filling speed and quality, and (ii) produce moldable compositions with high filler contents is also described.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: November 4, 2014
    Assignee: Rhodia Operations
    Inventors: Franco Speroni, Damien Zaher
  • Patent number: 8841408
    Abstract: Biocompatible macromonomers, hydrogels, methods of synthesis and methods of use thereof are provided. The biocompatible hydrogels of the present invention are prepared using native chemical ligation (NCL), in which a thioester readily reacts with a N-terminal thiol (cysteine) through transesterification and rearrangement to form an amide bond through a five-member ring intermediate.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: September 23, 2014
    Assignee: Northwestern University
    Inventors: Phillip B Messersmith, Bi-Huang Hu, Jing Su
  • Patent number: 8841382
    Abstract: The present invention provides an amphiphile of the formula (I) as described hereinafter. The invention further relates to a process for preparing the amphiphile and to a composition comprising the amphiphile and a sparingly water-soluble active ingredient. It further relates to a process for producing the composition by contacting the amphiphile and the active ingredient, and to the use of the amphiphile for solubilizing a sparingly water-soluble active ingredient in aqueous solutions. The invention also relates to the use of the amphiphile in an agrochemical formulation comprising the amphiphile and a pesticide for controlling phytopathogenic fungi and/or unwanted vegetation and/or unwanted insect or mite infestation and/or for regulating the growth of plants, and finally to plant propagation material comprising the amphiphile.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: September 23, 2014
    Assignee: BASF SE
    Inventors: Anna Cristadoro, Holger Türk, Michael Ishaque, Rabie Al-Hellani
  • Publication number: 20140221601
    Abstract: Novel oligomers and polymers derived from the reaction of benzoxazine compounds with a mixture of thiol compounds and amine compounds are disclosed. The compositions are useful in coating, sealants, adhesive and many other applications.
    Type: Application
    Filed: September 20, 2012
    Publication date: August 7, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventor: Ilya Gorodisher
  • Patent number: 8772417
    Abstract: 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: Grant
    Filed: April 12, 2011
    Date of Patent: July 8, 2014
    Assignee: National University of Singapore
    Inventors: Youchang Xiao, Tai-Shung Chung, Mei Ling Chua, Mohammad Askari, Rui Chin Ong
  • Patent number: 8742031
    Abstract: 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: Grant
    Filed: April 3, 2007
    Date of Patent: June 3, 2014
    Assignees: Solpit Industries, Ltd., Sojitz Corporation
    Inventor: Hiroshi Itatani
  • Patent number: 8742063
    Abstract: A non-leaching mediator may include a polymer having a polymeric backbone, and a plurality of phenothiazine groups bonded to the polymeric backbone. The plurality of phenothiazine groups may include at least one of a phenothiazine group having the general formula (IV): and salts thereof, where n is about 9 and “R” represents the polymeric backbone to which the phenothiazine group is bonded, and a phenothiazine group having the general formula (V): and salts thereof, where n is about 9 and “R” represents the polymeric backbone to which the phenothiazine group is bonded.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: June 3, 2014
    Assignee: Bayer HealthCare LLC
    Inventors: Jiangfeng Fei, William Chiang, Frank Kerrigan, Stuart Green, Craig Robson, Howard Easterfield
  • Patent number: 8716425
    Abstract: 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: Grant
    Filed: July 29, 2005
    Date of Patent: May 6, 2014
    Assignee: Bay Materials, LLC
    Inventors: Ray F. Stewart, John G. Lahlouh
  • Publication number: 20140045070
    Abstract: Electrochemical cell comprising (A) at least one anode as component (A), (B) at least one cathode as component (B), (C) at least one non-aqueous electrolyte as component (C), (D) at least one separator positioned between anode (A) and cathode (B), as component (D), characterized in that separator (D) is manufactured from at least one polyimide selected from branched condensation products of (a) at least one polycarboxylic acid having at least 3 COOH groups per molecule or an anhydride or ester thereof, and (b) and at least one compound, selected from (b1) at least one polyamine having on average more than two amino groups per molecule and (b2) at least one polyisocyanate having on average more than two isocyanate groups per molecule.
    Type: Application
    Filed: May 15, 2012
    Publication date: February 13, 2014
    Applicant: BASF SE
    Inventors: Anna Mueller-Cristadoro, Helmut Moehwald, Bernd Bruchmann, Raimund Pietruschka, Ingrid Haupt
  • Patent number: 8623515
    Abstract: 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: Grant
    Filed: September 21, 2011
    Date of Patent: January 7, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Jae-Deuk Yang, Eun-Ha Kim, Myoung-Youp Shin, Yong-Sik Yoo, Guk-Pyo Jo, Jung-Gon Choi
  • Patent number: 8592528
    Abstract: 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: Grant
    Filed: September 3, 2010
    Date of Patent: November 26, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eunseog Cho, Youngsuk Jung, Sangmo Kim, Byung-Hee Sohn, Yooseong Yang
  • Patent number: 8557928
    Abstract: 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: Grant
    Filed: September 23, 2011
    Date of Patent: October 15, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Eun-Ha Kim, Myoung-Youp Shin, Jae-Deuk Yang, Yong-Sik Yoo, Guk-Pyo Jo, Jung-Gon Choi
  • Patent number: 8476334
    Abstract: A radiation-curable acrylate-modified aminoamide resin which is the Michael addition product of an aminoamide thermoplastic polymer derived from a polymerised unsaturated fatty acid with a polyol ester having at least three (meth)acrylate ester groups, the aminoamide thermoplastic polymer having an amine number of from 40 to 60 mgKOH/g, the ratio of the initial (meth) acrylate groups of the polyol ester to the initial amino functional groups of the aminoamide polymer being at least 4:1, is liquid at 25° C., and is useful as the resin component of various types of energy-curable coating composition, including inks, varnishes and lacquers, especially lithographic inks.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: July 2, 2013
    Assignee: Sun Chemical Corporation
    Inventors: Derek Ronald Illsley, Martin John Thompson, Sean Phillip Francis Mayers, Douglas Frederick Pavey
  • Patent number: 8440783
    Abstract: Enhanced oligomeric polyols are reported. The enhanced oligomeric polyols may be prepared by a method comprising the steps of: (a) providing an oligomeric polyol that comprises at least one glycerol fatty acid ester having at least one glycerol fatty acid ester bond; wherein at least 5% of the ethyldenyl groups (*C?C*) in the glycerol fatty acid ester are substituted with a bonding structure selected from the group consisting of: C-*C—C*-C; O-*C—C*-O; C=*C—C*-C, and mixtures thereof, where * is used to denote the original carbon atoms in the ethylidenyl group; and (b) cleaving at least a portion of the glycerol fatty acid ester bonds to form the enhanced oligomeric polyol. The enhanced oligomeric polyols are useful in making polymers such as polyurethanes.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: May 14, 2013
    Assignee: Cargill, Incorporated
    Inventors: Timothy W. Abraham, Jeff Malsam, Xiuguang A. Guo, Milhail Ionescu, Ivan J. Javni, Zoran S. Petrovic
  • Patent number: 8420768
    Abstract: Higher diamondoid derivatives capable of taking part in polymerization reactions are disclosed as well as intermediates to these derivatives, polymers formed from these derivatives and methods for preparing the polymers.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: April 16, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Jeremy E. Dahl, Robert M. Carlson, Shenggao Liu
  • Patent number: 8349971
    Abstract: The present invention provides a process for preparing a solvent-soluble polyimide copolymer synthesized from a 6,6-imide segment having an imide oligomer with PMDA at both ends produced by adding 4 molar equivalents of pyromellitic dianhydride (PMDA) and 2 molar equivalents of diaminotoluene (DAT) to an imide oligomer produced by heating 1 molar equivalent of biphenyltetracarboxylic dianhydride (BPDA) and 2 molar equivalents of diaminodiphenyl ether (DADE) at 160-200° C. in the presence of a catalyst in an organic polar solvent.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: January 8, 2013
    Assignees: Solpit Industries, Ltd., Sojitz Corporation
    Inventor: Hiroshi Itatani
  • Publication number: 20120237774
    Abstract: The present disclosure provides polyamides and amidoamine curing agents including the reaction product of (1) a modified amine component comprising at least one multifunctional amine of structure 1: wherein R1 is selected from C1-C16 linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups; R2 and R4 are hydrogen, R3 is R1 or hydrogen, X, Y, and Z are independently selected from C2-C10 alkylene, hexylene and cycloalkylene groups, n=0, 1, 2, 3, 4, 5, 6, or 7; and (2) a fatty acid component. Exemplary fatty acid components include at least one of monomer fatty acids, dimer fatty acids, trimer fatty acids, polymer fatty acids, esters of monomer, dimer, trimer, and polymer fatty acids and combinations thereof. The method for making the curing agents and articles formed therefrom are also disclosed.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 20, 2012
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Williams Rene Edouard Raymond, David Alan Dubowik, Gamini Ananda Vedage
  • Patent number: 8222365
    Abstract: This disclosure relates to a polyamideimide resin containing a structure represented by formula (1):
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: July 17, 2012
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Katsuya Shimeno, Takeshi Ito, Tomohiro Aoyama, Akira Nishimoto, Shoko Nagata, Tomoharu Kurita
  • Patent number: 8207287
    Abstract: Disclosed are polymers derived from units of bisphenol compounds, such as tetramethylcyclobutane diol-bisphenol, and processes for making and using them.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: June 26, 2012
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventor: Jean-Francois Morizur
  • Patent number: 8158268
    Abstract: A metal-coated polyimide film is excellent in long-term adhesion reliability, exhibits various dimensional stabilities, and is particularly suitable for FPC, COF and TAB applications. The metal-coated polyimide film comprises a non-thermoplastic polyimide film; and a metal layer being directly formed on one surface or both surfaces of the non-thermoplastic polyimide film without using an adhesive, wherein the non-thermoplastic polyimide film contains a non-thermoplastic polyimide resin having a thermoplastic polyimide block component.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: April 17, 2012
    Assignee: Kaneka Corporation
    Inventors: Hisayasu Kaneshiro, Takashi Kikuchi, Shogo Fujimoto
  • Patent number: 8138301
    Abstract: In accordance with the present invention, there is provided a method of preparing higher generation 1?3 C-branched polyamide dendrons. The combination of commercially available acryloyl chloride with 1?3 C-branched amines, e.g., di-tert-butyl 4-[2-(tert-butoxycarbonyl)ethyl]-4-aminoheptanedioate, resulted in generally high yields of acryl amides, which upon treatment with other reagents, generated the desired higher generation dendrons. These second and third generation dendrons were fully characterized and compared to the samples prepared from a convergent synthesis.
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: March 20, 2012
    Assignee: The University of Akron
    Inventors: George R. Newkome, Charles N. Moorefield, Kishore K. Kotta
  • Publication number: 20120059087
    Abstract: Pressure sensitive adhesives produced from naturally occurring fats and oils are described. Also described are methods of producing the pressure sensitive adhesives. Generally, one or more naturally occurring fats or oils are epoxidized, and then reacted with certain alcohols or amines to thereby obtain the noted pressure sensitive adhesives.
    Type: Application
    Filed: August 16, 2011
    Publication date: March 8, 2012
    Inventors: Carol A. Koch, Prakash Mallya, Charles R. Williams
  • Patent number: 8105752
    Abstract: The invention pertains to an epoxy-modified photosensitive polyimide, which possesses excellent heat resistance, chemistry resistance, and flexibility, and can be used in a liquid photo resist or dry film resist, or used in a solder resist, coverlay film, or printed circuit board.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: January 31, 2012
    Assignee: Eternal Chemical Co., Ltd.
    Inventors: Meng-Yen Chou, Chuan Zong Lee
  • Patent number: 8071656
    Abstract: The present invention provides energetically and economically efficient methods for separating polyamide polymer(s) from commingled materials. The methods generally involve precipitating a polyamide polymer dissolved in a solvent (e.g., formic acid) using dimethyl ether (DME) as an antisolvent. The methods comprise dissolving the polyamide polymer in a solvent that (i) selectively dissolves the polyamide polymer relative to the other materials and (ii) has a higher solubility for DME relative to the polyamide polymer; and then contacting the mixture of the solvent with the dissolved polyamide polymer with DME, thereby precipitating the polyamide polymer.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: December 6, 2011
    Assignee: DynaSep LLC
    Inventors: Brian J. Waibel, Hans Schonemann, Val Krukonis, David J. Lawrence, Joseph N. Caulfield
  • Patent number: 8030437
    Abstract: A method for forming a polyimide composite article utilizes a polyimide resin system including at least a first prepolymer component and a second prepolymer component. A preform structure is tackified with the first prepolymer component. Using resin infusion or resin transfer molding techniques, the tackified preform structure is contacted with the second prepolymer component. The polyimide resin system is cured under suitable cure conditions so that the first and second prepolymer components mix and react to produce the polyimide composite structure.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: October 4, 2011
    Assignee: General Electric Company
    Inventors: Stephen Mark Whiteker, Lisa Vinciguerra Shafer, Warren Rosal Ronk
  • Publication number: 20110203990
    Abstract: A chlorine resistant polyamide is formed from the reaction product of an amine and an acid chloride monomer wherein the acid chloride monomer is modified with electron-withdrawing groups that exhibit sufficient activity to (i) minimize any chlorination on both the amine and acid chloride side and (ii) minimize N-chlorination. A membrane is made from the polyamide and, in one application, the membrane is used in a desalination unit.
    Type: Application
    Filed: August 23, 2010
    Publication date: August 25, 2011
    Inventors: Andrew Patrick Murphy, Balasingam Murugaverl, Robert Lee Riley
  • Publication number: 20110160407
    Abstract: 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: Application
    Filed: June 5, 2009
    Publication date: June 30, 2011
    Applicant: RHODIA OPERATIONS
    Inventors: Franck Touraud, Veronique Bossennec, Stephane Jeol
  • Patent number: 7935780
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions are preferably thermoplastic and comprise imides, amideimides, and/or amideimide-siloxanes (either in polymeric or oligomeric form) dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: May 3, 2011
    Assignee: Brewer Science Inc.
    Inventors: Wenbin Hong, Sunil K. Pillalamarri
  • Patent number: 7926930
    Abstract: The invention relates to a method for manufacturing an inkjet ink including a polyamic acid (A), including a step of at least reacting one or more compounds selected from the group of a monoamine (a3) and a compound having one acid anhydride group (a4) with a compound having two or more acid anhydride groups (a1) and a diamine (a2).
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: April 19, 2011
    Assignee: Chisso Corporation
    Inventors: Hiroyuki Satou, Setsuo Itami, Takayuki Hattori
  • Patent number: 7923527
    Abstract: The invention provides a carbon nanotube compound and method for producing the same. The method of the invention comprises the following steps. Firstly, Aniline-trimer and DMAc(dimethyl acetamide) solution are mixed to form a first solution. Secondly, Dianhydride and DMAc solution are mixed to form a second solution. The first solution and the second are mixed to form a third solution. Additionally, carboxyl-multiwall carbon nanotubes (c-MWNT), Diaminodiphenylether and DMAc solution are mixed to form a fourth solution. The third solution and the fourth are mixed to form a polyamic acid/CNT solution. Some polyamic acid/CNT solution is spread on a substrate and processed by a thermal treatment, and a carbon nanotube compound is eventually produced.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: April 12, 2011
    Assignee: Chung-Shan Institute of Science and Technology Armaments Bureau, Ministry of National Defense
    Inventors: Cheng-Chien Yang, Jui-Ming Yeh, Chia-Shiang Yang, Yuen-Hsin Peng, Kuan-Yeh Huang
  • Patent number: 7901745
    Abstract: 3,4-Dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-succinic dianhydride is provided. The tetracarboxylic dianhydride is represented by Formula 1, which is described in the specification. Further provided is a liquid crystal aligning agent comprising a polyimide prepared using the tetracarboxylic dianhydride and a solvent. Further provided is a liquid crystal alignment layer formed using the liquid crystal aligning agent. The liquid crystal alignment layer exhibits excellent electro-optical properties and good processability in terms of printability.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: March 8, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Jae Min Oh, Tae Hyoung Kwak, Ji Young Jeong
  • Publication number: 20110052927
    Abstract: Powder compositions and articles and methods of forming articles from powder compositions are provided. The powder compositions include at least one powder that preferably includes an amount of one or more branched polymers such as, for example, one or more branched polyamide polymers. The powder composition is preferably capable of being formed, via a layer-by-layer sintering process such as, for example, selective laser sintering, into a three-dimensional article.
    Type: Application
    Filed: March 12, 2009
    Publication date: March 3, 2011
    Applicant: VALSPAR SOURCING, INC.
    Inventors: Raffaele Martinoni, Paul Boehler, Paul Stenson, Jurgen Spindler, Eberhard Kinkelin, Gerhard Possnecker
  • Patent number: 7858734
    Abstract: A polyimide material comprises a polyimide. The polyimide has repeating units of formula (I). The polyimide material further comprises a coupling agent-containing filler. A method for preparing a polyimide material comprises allowing a mixture comprising an aromatic tetracarboxylic dianhydride, an aromatic diamine, and a coupling agent-containing filler to react to produce a polyamic acid. The method further comprises contacting the polyamic acid with an aliphatic dicarboxylic acid of formula (II) to produce an intermediate, and imidizing the intermediate to produce the polyimide material. A polyimide comprises repeating units of formula (I).
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: December 28, 2010
    Assignee: BYD Co., Ltd.
    Inventors: Qiang Li, Chengzhang Li, Lin Jiang
  • Patent number: 7843045
    Abstract: The object of the present invention is to provide an adhesion film for semiconductor that is capable of bonding a semiconductor chip to a lead frame tightly at an adhesion temperature lower than that of the adhesion film of a traditional polyimide resin without generation of voids and that can also be used for protection of lead frame-exposed area, a thermoplastic resin composition for semiconductor for use in the adhesive agent layer therein, and a lead frame having the adhesive film and a semiconductor device; and, to achieve the object, the present invention provides a thermoplastic resin composition for semiconductor, comprising a thermoplastic resin obtained in reaction of an amine component containing an aromatic diamine mixture (A) containing 1,3-bis(3-aminophenoxy)benzene, 3-(3?-(3?-aminophenoxy)phenyl)amino-1-(3?-(3?-aminophenoxy)phenoxy)benzene and 3,3?-bis(3?-aminophenoxy)diphenylether, and an acid component (C), an adhesion film for semiconductor using the same, a lead frame having the adhesion fi
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: November 30, 2010
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Kiyohide Tateoka, Toshiyasu Kawai, Yoshiyuki Tanabe, Tomohiro Nagoya, Naoko Tomoda
  • Patent number: RE43880
    Abstract: This invention relates to the composition and a solvent-free process for preparing novel imide oligomers and polymers specifically formulated with effective amounts of a dianhydride such as 2,3,3?,4-biphenyltetra carboxylic dianydride (a-BPDA), at least one aromatic diamine and an endcapped of 4-phenylethynylphthalic anhydride (PEPA) or nadic anhydride to produce imide oligomers that possess a low-melt viscosity of 1-60 poise at 260-280° C. When the imide oligomer melt is cured at about 371° C. in a press or autoclave under 100-500 psi, the melt resulted in a thermoset polyimide having a glass transition temperature (Tg) equal to and above 310° C. A novel feature of this process is that the monomers; namely the dianhydrides, diamines and the endcaps, are melt processable to form imide oligomers at temperatures ranging between 232-280° C. (450-535° F.) without any solvent.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: December 25, 2012
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventor: Chun-Hua Chuang