Carboxylic Acid Contains Three Or More Acid Groups Or Derivative Thereof Patents (Class 524/600)
  • Patent number: 10745520
    Abstract: The invention relates to a process for producing aromatic polyimides, comprising the following steps: (a) preparation of one or more solid salt(s) by reacting one or more aromatic tetracarboxylic acid(s) and one or more diamine(s) according to a mole ratio ranging from 0.95 to 1.05; (b) drying of the solid salt(s), (c) addition, to the dry salt resulting from step (b), of one or more compound(s) (C) comprising one or more group(s) chosen from a carboxylic acid group, an anhydride group, an ester group and an acyl chloride group; (d) solid-state polymerization of said solid salt(s) in the presence of the compound(s) (C).
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 18, 2020
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE CLAUDE BERNARD LYON1, UNIVERSITE JEAN MONNET SAINT-ETIENNE, Rhodia Operations, Institut National Des Sciences Appliquees De Lyon
    Inventors: Stéphane Jeol, René Rossin, Vincent Mollet, Benjamin Paci, Françoise Fenouillot-Rimlinger, Alain Rousseau
  • Patent number: 10711105
    Abstract: This resin composition is characterized by comprising (a) 100 parts by mass of a polyimide precursor containing a structural unit represent by general formula (1) (wherein, R1 and R2 are each independently selected from a hydrogen atom, monovalent aliphatic hydrocarbons having 1-20 carbon atoms, and aromatic groups, and X1 is a tetravalent organic group having 4-32 carbon atoms), (b) 0.001-5 parts by mass of a silicone-based surfactant, and (c) an organic solvent.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 14, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yoshiki Miyamoto, Yasuhito Iizuka, Masaki Maitani, Takayuki Kanada
  • Patent number: 10633569
    Abstract: A composition and a solution for temporary bonding are provided. The composition includes a dianhydride monomer, a light-absorbing monomer, and a light-absorbing material. The light-absorbing monomer includes at least one of N,N,N,N-(p-aminophenyl)-p-phenylenediamine (TPDA) and N,N-(p-aminophenyl)-p-phenylenediamine (DPDA). The light-absorbing material includes carbon black and silicon dioxide.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: April 28, 2020
    Assignee: TAIFLEX Scientific Co., Ltd.
    Inventors: Hsiu-Ming Chang, Tsung-Tai Hung, Li-Jung Hsiao, Po-Wen Lin
  • Patent number: 10604628
    Abstract: This disclosure relates to a polymer that includes a first repeat unit and at least one end-cap group at one end of the polymer. The first repeat unit includes at least one imide moiety and at least one indane-containing moiety. The end-cap group is capable of undergoing a cycloreversion reaction. This disclosure also relates to a thermosetting composition containing the above polymer.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: March 31, 2020
    Assignee: Fujifilm Electronic Materials U.S.A., Inc.
    Inventors: Sanjay Malik, William A. Reinerth, Binod B. De, Ahmad A. Naiini
  • Patent number: 10597493
    Abstract: A polyimide precursor composition includes a solvent including water and a polyimide precursor including a group having a triple bond at a terminal thereof, which is dissolved in the solvent.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: March 24, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kana Miyazaki, Tsuyoshi Miyamoto, Tomoya Sasaki
  • Patent number: 10501579
    Abstract: A process is disclosed for synthesis of a poly(amic acid), including reacting a dianhydride and a diamine in the presence of a tertiary amine, tertiary ammonium salt, tertiary ammonium hydroxide, secondary amine, secondary ammonium salt, secondary ammonium hydroxide, quaternary ammonium salt, quaternary ammonium hydroxide, ammonium hydroxide, or a combination comprising at least one of the foregoing, in water, at a temperature of 60 C to 180 C, or 60 C to 100 C, or 100 C to 180 C, under an inert atmosphere, with agitation, to produce an aqueous poly(amic acid).
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: December 10, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventor: Viswanathan Kalyanaraman
  • Patent number: 10343383
    Abstract: A thermosetting resin composition and a prepreg and a laminated board prepared therefrom. The thermosetting resin composition contains the following components in parts by weight: 50-150 parts of a cyanate; 30-100 parts of an epoxy resin; 5-70 parts of styrene-maleic anhydride; 20-100 parts of a polyphenyl ether; 30-100 parts of a halogen-free flame retardant; 0.05-5 parts of a curing accelerator; and 50-200 parts of a filler. The prepreg and laminated board prepared from the thermosetting resin composition have comprehensive performances such as a low dielectric constant, a low dielectric loss, an excellent flame retardance, heat resistance and moisture resistance, etc., and are suitable for use in a halogen-free high-frequency multilayer circuit board.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: July 9, 2019
    Assignee: SHENGYI TECHNOLOGY CO., LTD.
    Inventors: Hui Li, Kehong Fang
  • Patent number: 10174166
    Abstract: A polyimide precursor comprising a repeating unit represented by the following chemical formula (1): in which A is a divalent group of an aromatic diamine or an aliphatic diamine, from which amino groups have been removed; and X1 and X2 are each independently hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms, wherein the polyimide precursor comprises at least one type of repeating unit represented by the chemical formula (1) in which A is a group represented by chemical formula (2) or (3): in which m independently represents 0 to 3 and n independently represents 0 to 3; Y1, Y2 and Y3 each independently represent at least one selected from the group consisting of hydrogen atom, methyl group and trifluoromethyl group; and Q and R each independently represent direct bond, or at least one of —NHCO—, —CONH—, —COO— and —OCO—, in which Z and W each independently represent a divalent aromatic group having 6 to 18 carbon atoms; and Y4 rep
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: January 8, 2019
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Takuya Oka, Yukinori Kohama, Yoshiyuki Watanabe, Nobuharu Hisano
  • Patent number: 10112149
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 30, 2018
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Raja Swaidan, David J. Hasse, Madhava R. Kosuri, Canghai Ma, Robert A. Gagliano, Henri Chevrel
  • Patent number: 10072180
    Abstract: A composition for preparing an article including a poly(imide-amide) copolymer, the composition including (i) a copolymer obtained by reacting a tetracarboxylic acid dianhydride represented by Chemical Formula 1, a diamine represented by Chemical Formula 2, and a carboxylic acid dichloride to form a reaction product, followed by removing hydrochloric acid from the reaction product, (ii) an acid anhydride, and (iii) a solvent: Wherein group R1 in Chemical Formula 1 and group R2 in Chemical Formula 2 are the same as described in the specification.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: September 11, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Sungwon Choi, Chanjae Ahn, Sungwoo Hong, Byunghee Sohn, Hyunjeong Jeon, Kyeong-sik Ju
  • Patent number: 9962866
    Abstract: A protective film has a soluble polyimide polymer base layer and an exterior layer directly contacting the base layer exterior surface. The base layer is less than 12 microns thick, and is at least 2 meters long. The exterior layer includes at least one of a fluorinated polymer, a dielectric layer, one or more metallic layers, a metalloid layer, or a plurality a dielectric layers where each dielectric layer has a dielectric layer thickness that varies no more than 3%. The exterior layer or the base layer can also include additives, as desired.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: May 8, 2018
    Assignee: NeXolve Corporation
    Inventors: James D. Moore, Brian G. Patrick, Brandon S. Farmer, Garrett D. Poe, David L. Rodman, Lonnie F. Bradburn, Amy S. Davis
  • Patent number: 9845415
    Abstract: The present invention relates to preparation and use of water dispersible nanogels and solvent dispersible reactive nanogels as additives to enhance polymer properties or as precursors to polymeric networks.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 19, 2017
    Assignee: The Regents of the University of Colorado, A Body Corporate
    Inventor: Jeffrey W. Stansbury
  • Patent number: 9834644
    Abstract: Compositions of azobenzene-containing, photomechanically active, copoly(amic acids) and linear copolyimides including an azobenzenediamine, a rigid dianhydride, and a flexible dianhydride are provided; and methods of making the same.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: December 5, 2017
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Loon-Seng Tan, David Huabin Wang, Kyung Min Lee, Timothy J. White
  • Patent number: 9758623
    Abstract: The present invention relates to a polyimide precursor comprising a repeating unit represented by the following chemical formula (1): wherein A is a tetravalent group having at least one aliphatic six membered ring and no aromatic ring in the chemical structure, and B is a divalent group having at least one amide bond and an aromatic ring in the chemical structure; or A is an aliphatic tetravalent group and B is a divalent group having at least one chemical structure represented by the following chemical formula (2) in the chemical structure: and X1 and X2 are each independently hydrogen, a C1-6 alkyl group or a C3-9 alkylsilyl group.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: September 12, 2017
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Ryoichi Takasawa, Takuya Oka, Yukinori Kohama, Miharu Nakagawa, Keiji Iwamoto, Kenji Hirotsu, Yoshiyuki Watanabe
  • Patent number: 9527242
    Abstract: A method for printing a three-dimensional part with an additive manufacturing system, which includes providing a part material that compositionally has one or more semi-crystalline polymers and one or more secondary materials that are configured to retard crystallization of the one or more semi-crystalline polymers, where the one or more secondary materials are substantially miscible with the one or more semi-crystalline polymers. The method also includes melting the part material in the additive manufacturing system, forming at least a portion of a layer of the three-dimensional part from the melted part material in a build environment, and maintaining the build environment at an annealing temperature that is between a glass transition temperature of the part material and a cold crystallization temperature of the part material.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: December 27, 2016
    Assignee: Stratasys, Inc.
    Inventors: Luke M. B. Rodgers, Vittorio L. Jaker
  • Patent number: 9448480
    Abstract: The present invention provides a novel resist underlayer film formation composition for lithography. A resist underlayer film formation composition for lithography comprising: a polymer having a structure of Formula (1) at a terminal of a polymer chain; a cross-linking agent; a compound promoting a cross-linking reaction; and an organic solvent; (where R1, R2, and R3 are each independently a hydrogen atom, a linear or branched C1-13 alkyl group, a halogeno group, or a hydroxy group; at least one of R1, R2, and R3 is the alkyl group; Ar is a benzene ring, a naphthalene ring, or an anthracene ring; two carbonyl groups are bonded to respective two adjacent carbon atoms of Ar; and X is a linear or branched C1-6 alkyl group optionally having a C1-3 alkoxy group as a substituent).
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: September 20, 2016
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Tokio Nishita, Ryuji Ohnishi, Noriaki Fujitani, Rikimaru Sakamoto
  • Patent number: 9440397
    Abstract: Example 3D printing methods involve rapid liquid filling of one or more cavities within a hollow and/or porous 3D printed object. In some examples, a conventional applicator computer-controllably dispenses significantly viscous solidifiable fluid in layers to build up a side wall of the object, and that same applicator or another applicator discharges a second solidifiable fluid at relatively low viscosity to rapidly fill the cavity(s), voids and/or porosity defined by the accurately printed side wall. In some examples, the liquid fill solidifies to permanently embed an internal object (e.g., wire or fiberglass mesh, Kevlar fabric, acrylic, bullet resistant armor, structural reinforcing material, etc.). In some examples, the liquid fill material permanently bonds to the accurately printed side wall. In some examples, the liquid fill material shrinks upon solidifying to create beneficial residual compressive stress within the 3D printed side wall and/or within the solidified material itself.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: September 13, 2016
    Inventor: David E. Fly
  • Patent number: 9315702
    Abstract: A polyetherimide composition comprising a polyetherimide manufactured by reaction of an alkali metal salt of a dihydroxy aromatic compound with a bis(halophthalimide) composition comprising, based on the weight of the bis(halophthalimide) composition, at least 15 wt. % of a 3,3?-bis(halophthalimide) of the formula from more than 17 wt. % to less than 85 wt. % of a 4,3?-bis(halophthalimide) of the formula ?and from more than 0 to less than 27 wt.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: April 19, 2016
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Matthew L. Kuhlman, Gurulingamurthy M. Haralur
  • Patent number: 9284424
    Abstract: A polyimide film includes a polyimide polymer forming a main molecular structure of the polyimide film, and polyimide particles present in the polyimide film at a weight ratio between about 15 wt % and 30 wt % of a total weight of the polyimide film, the polyimide particles having an average diameter between about 3 ?m and 8 ?m. The polyimide film can have a 60° gloss value equal to or smaller than 10, a haze equal to or higher than 90%, and a Young's modulus equal to or higher than 280 kgf/mm2. In some embodiments, methods of fabricating the polyimide film are also described.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: March 15, 2016
    Assignee: TAIMIDE TECHNOLOGY INCORPORATION
    Inventors: Chih-Wei Lin, Meng-Ying Tsai
  • Patent number: 9079157
    Abstract: The present invention provides compositions, methods and kits for the removal of proteins from complex reaction mixtures useful in majority workflows of molecular biology research experiments. More specifically, such compositions, methods and kits are useful in such processes as purification of nucleic acids from biological samples or after their treatment with specific enzymes, when residual enzyme activity in reaction mixture is not compatible with downstream applications.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: July 14, 2015
    Assignee: Thermo Fisher Scientific Baltics, UAB
    Inventors: Vitalis Tiknius, Eglé Merkiene
  • Publication number: 20150132591
    Abstract: A polyimide precursor, a polyimide using the polyimide precursor, and a polyimide film using the polyimide. The polyimide precursor comprises a structural unit represented by general formula (AI): in which A is tetravalent aromatic group or aliphatic group, B is divalent aromatic group, and each R2 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms, in which B in general formula (AI) includes a triazine moiety represented by following formula (AB1): in which R1 represents hydrogen, an alkyl group having 1 to 6 carbon atoms or an aromatic group, and R3 represents hydrogen, methyl or ethyl.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 14, 2015
    Inventors: Yoshiyuki Oishi, Shin-ichiro Kohama, Nobuharu Hisano
  • Patent number: 9023440
    Abstract: The invention provides a liquid crystal alignment film, a method for preparing the same and a liquid crystal display device comprising the same. The alignment film comprises a polyimide obtained by reacting a compound as shown in Formula 2 or Formula 3 with an aromatic diamine as shown in Formula 1, wherein the R1, R2, R3, R4, R5, R6, R7, R1?, R2?, R3?, R4?, R5?, R6?, R7?, or R8? is H, an alkyl, an aralkyl or a haloalkyl, and the Ar is an aryl. The liquid crystal alignment film has a tactic spatial configuration, decreases the ?-? attractive interaction between the polyimide backbones, allows the directional and homogenous alignment of the liquid crystal molecules on the surface of the polyimide, and thereby increases the contrast of the liquid crystal display.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: May 5, 2015
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Ang Xiao, Haibo Zhu, Sunghun Song, Wei Li, Zhiyong Liu
  • Publication number: 20150111051
    Abstract: There is described a low VOC, unsaturated alkyd resin obtained by reacting (A) to (E): (A) optionally from 0 to 30% w/w naturally occurring Rosin, comprising from 40 to 80 w/w parts per hundred of Rosin of an unsaturated mono carboxylic acid with at least one C15-25cyclohydrocarbo moiety capable of a Diels Alder or Ene reaction (pref monoacids being abietic acid, palustric acid, levopimaric acid, sandaracopimaric acid, and/or anhydrides thereof); (B) from 25 to 80% w/w of a linear C12-60hydrocarbo carboxylic acid with at least one (preferably at least two conjugated) C?C bonds (=unsaturated fatty acid); (C) optionally from 1 to 30% w/w of an ethylenically unsaturated C5-6hydrocarbo dicarboxylic acid and/or anhydride thereof, being reactive as a dienophile and/or enophile with A and/or B (pref C are itaconic acid, citraconic acid and/or anhydrides thereof); (D) from 1 to 40% w/w of at least one polyol; (E) optionally at least one monomer other than A to D—the total of A to E being 100%.
    Type: Application
    Filed: May 8, 2013
    Publication date: April 23, 2015
    Inventors: Johannes Wilhelmus Maria Hendriks, Adrianus Jozephus Hendricus Lansbergen
  • Publication number: 20150099133
    Abstract: There is provided a high temperature hybridized molecular functional group adhesion barrier coating for a composite structure. The coating has one or more hybridized molecular functional groups attached to a composite surface of the composite structure, wherein the one or more hybridized molecular functional groups are hybridized through a chemical derivatization process. The coating further has one or more chemical derivatization compounds attached to the one or more hybridized molecular functional groups via a condensation reaction. The coating is resistant to high heat temperatures in a range of from about 350 degrees Fahrenheit to about 2000 degrees Fahrenheit, and the coating is a thermally protective, toughened adhesion coating that mitigates effects of a hostile operating environment.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Inventors: Eugene A. Dan-Jumbo, Joel P. Baldwin
  • Patent number: 8987376
    Abstract: Disclosed is a polyimide composition for semiconductor devices, which has a rheological characteristics suited for screen printing and dispense coating, which has an improved wetting property with various coating bases, by which continuous printing of 500 times or more can be attained, with which blisters, cissing and pinholes are not generated after printing and drying or during drying or curing, which can coat a desired area. A method of forming a film in a semiconductor and semiconductors having the film formed by this method as an insulation film, protective film or the like are also disclosed. The composition for semiconductor devices contains a mixed solvent of a first organic solvent (A) and a second organic solvent (B); and a polyimide resin having at least one group selected from the group consisting of alkyl groups and perfluoroalkyl groups in recurring units, and having thixotropic property, the polyimide resin being dissolved in the mixed solvent.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: March 24, 2015
    Assignees: PI R&D Co., Ltd., Mitsubishi Electric Corporation
    Inventors: Toshiyuki Goshima, Sigemasa Segawa, Maw Soe Win, Junichi Yamashita, Ken Takanashi
  • Publication number: 20150080489
    Abstract: A polyetherimide composition comprising a polyetherimide manufactured by reaction of an alkali metal salt of a dihydroxy aromatic compound with a bis(halophthalimide) composition comprising, based on the weight of the bis(halophthalimide) composition, at least 15 wt. % of a 3,3?-bis(halophthalimide) of the formula from more than 17 wt. % to less than 85 wt. % of a 4,3?-bis(halophthalimide) of the formula and from more than 0 wt. % to less than 27 wt. % of a 4,4?-bis(halophthalimide) of the formula wherein R is para-phenylene.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 19, 2015
    Inventors: Matthew L. Kuhlman, Gurulingamurthy Haralur
  • Publication number: 20150079377
    Abstract: A polyetherimide manufactured by reaction of an alkali metal salt of a dihydroxy aromatic compound with a bis(halophthalimide) composition comprising, based on the weight of the bis(halophthalimide) composition, from more than 45 to less than 75 weight percent of a 3,3?-bis(halophthalimide), less than 10 weight percent of a 3,4?-bis(halophthalimide), and from more than 45 to less than 75 weight percent of a (4,4?-bis(halophthalimide.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 19, 2015
    Inventor: Matthew L. Kuhlman
  • Publication number: 20150080528
    Abstract: The present invention relates to a liquid crystal alignment agent, a liquid crystal alignment film made by the liquid crystal alignment agent and a liquid crystal display element having the liquid crystal alignment film. The liquid crystal alignment agent includes a polymer composition (A) and a solvent (B). The polymer composition (A) is synthesized by reacting a mixture that includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The aforementioned liquid crystal alignment agent has a better process stability, and the liquid crystal alignment film made by the liquid crystal alignment agent could improve the reliability of the liquid crystal display element.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 19, 2015
    Inventor: Tsung-Pei TSAI
  • Publication number: 20150079376
    Abstract: A polyetherimide composition comprising a polyetherimide manufactured by reaction of an alkali metal salt of a dihydroxy aromatic compound with a bis(halophthalimide) composition comprising, based on the weight of the bis(halophthalimide) composition, at least 15 wt. % of a 3,3?-bis(halophthalimide) of the formula from more than 17 wt. % to less than 85 wt. % of a 4,3?-bis(halophthalimide) of the formula and from more than 0 to less than 27 wt.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 19, 2015
    Inventor: Matthew L. Kuhlman
  • Publication number: 20150062513
    Abstract: A liquid crystal display device includes a first substrate, a first alignment layer on the first substrate, a second substrate facing the first substrate, a second alignment layer on the second substrate, and a liquid crystal layer between the first substrate and the second substrate and including liquid crystal molecules. The first alignment layer and the second alignment layer include a polymer including at least of polyamic acid, polyimide, and a combination including at least one of the foregoing polymers, and a compound including an epoxy cross-linker represented by Chemical Formula 1.
    Type: Application
    Filed: March 24, 2014
    Publication date: March 5, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: HEUNGSHIK PARK, Jooyoung YOON, Dong-Chul SHIN, KICHUL SHIN, Sung-Jae YUN, Hyeokjin LEE
  • Publication number: 20150051341
    Abstract: A thermosetting solution composition composed of a biphenyltetracarboxylic acid compound containing a partial lower aliphatic alkyl ester of 2,3,3?,4?-biphenyltetracarboxylic acid and/or a partial lower aliphatic alkyl ester of 2,2?,3,3?-biphenyltetracarboylic acid, an aromatic diamine compound in a molar amount larger than a molar amount of the biphenyltetracarboxylic acid compound, a partial lower aliphatic alkyl ester of 4-(2-phenylethynyl)phthalic acid compound in a molar amount as much as 1.8-2.2 times a molar amount corresponding to a difference between the molar amount of the aromatic diamine compound and the molar amount of the biphenyltetracarboxylic acid compound, and an organic solvent composed of a lower aliphatic alcohol is of value for manufacture of a prepreg.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 19, 2015
    Inventors: Norio Miura, Hiroaki Yamaguchi, Hideki Ozawa, Mitsushi Taguchi
  • Publication number: 20150049271
    Abstract: A liquid crystal display device includes: a pair of substrates at least one of which is transparent; a liquid crystal layer disposed between the pair of substrates; an electrode group formed on at least one substrate of the pair of substrates, for applying an electric field to the liquid crystal layer; a plurality of active elements connected to the electrode group; and a liquid crystal alignment film disposed on at least one substrate of the pair of substrates, in which the liquid crystal alignment film, which is formed by a photo-alignment process, contains polyimide formed using tetracarboxylic acid dianhydride and/or diamine each having a specific chemical structure.
    Type: Application
    Filed: October 30, 2014
    Publication date: February 19, 2015
    Inventors: Shoichi Uchino, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Masaki Matsumori, Yasushi Tomioka, Jun Tanaka
  • Publication number: 20150045502
    Abstract: The invention aims to provide polyamic acid that can form a varnish with a low viscosity and serves to produce, through curing, coat film with good mechanical characteristics and further aims to produce cured coat film with good mechanical characteristics regardless of whether the molar concentration of the acid anhydride group in the acid dianhydride monomer and that of the amino group in the multivalent amine compound or diamine compound are identical to or different from each other. This objective is met by polyamic acid including a structure as represented by chemical formula (1) given below: (In chemical formula (1), ? represents an oxygen or sulfur atom and W represents an electron-withdrawing group, and R11 and R12 represent independently a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms.
    Type: Application
    Filed: March 28, 2013
    Publication date: February 12, 2015
    Applicant: TORAY Industries, Inc.
    Inventors: Daichi Miyazaki, Masao Tomikawa
  • Publication number: 20150045501
    Abstract: The present invention relates to semiaromatic semicrystalline thermoplastic copolyimides obtained by polymerization of at least: (a) an aromatic compound comprising two anhydride functions and/or carboxylic acid and/or ester derivatives thereof; (b) a diamine of formula (I) NH2-R—NH2 in which R is a divalent aliphatic hydrocarbon-based radical optionally comprising heteroatoms, the two amine functions being separated by a number X of carbon atoms, X being between 4 and 12; and (c) a diamine of formula (II) NH2-R?—NH2 in which R? is a divalent aliphatic hydrocarbon-based radical optionally comprising heteroatoms, the two amine functions being separated by a number Y of carbon atoms, Y being between 10 and 20; it being understood that diamine (b) is different from diamine (c).
    Type: Application
    Filed: September 18, 2012
    Publication date: February 12, 2015
    Inventor: Stéphane Jeol
  • Publication number: 20150031829
    Abstract: The present invention relates to a liquid crystal alignment agent, a liquid crystal alignment film made by the liquid crystal alignment agent and a liquid crystal display element having the liquid crystal alignment film. The liquid crystal alignment agent includes a polymer (A) and a solvent (B). The polymer (A) is synthesized by reacting a mixture that includes a tetracarboxylic dianhydride compound (a) and a diamine compound (b). According to the specific diamine compound (b) and an amount of the same, the aforementioned liquid crystal alignment agent has better pretilt angle stability.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 29, 2015
    Inventor: Tsung-Pei TSAI
  • Patent number: 8940833
    Abstract: A pressure sensitive adhesive (PSA) comprising: (A) 50 to 99 weight percent (wt %) of a partially aromatic polyester comprising at least two hydroxyl groups per polymer chain and having a: (1) Storage modulus of >0.33 Megapascals (MPa) at 23° C., (2) Mn of 20,000 to 200,000 grams per mole (g/mol), and (3) Glass transition (Tg) temperature of ?60° C. to 20° C.; (B) 1 to 40 wt % of at least one of a plasticizer or tackifier; and (C) 0.1 to 10 wt % of a crosslinker with a functionality of >2.5; with the provisos that the PSA has a: (i) Tg of ?60° C. to 10° C.; (ii) Storage modulus of <0.33 MPa at 23° C.; (iii) Rubbery plateau in excess of its Tg; and (iv) Melt flow in excess of 70° C.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 27, 2015
    Assignee: Brady Worldwide, Inc.
    Inventors: Andrew L. Schmitt, Adam Welander
  • Publication number: 20150025192
    Abstract: Black polyimides polymer and a method of synthesizing the same have been developed. The black polyimide polymer includes at least one acid monomer, at least one diamino monomer and a solvent-soluble black dye. The acid and diamino monomers having been reacting in a solvent under suitable conditions to form a polyimide precursor polymer.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 22, 2015
    Applicant: NeXolve Corporation
    Inventors: Brandon S. Farmer, Garrett D. Poe, David L. Rodman, Lonnie F. Bradburn, JR.
  • Publication number: 20150018484
    Abstract: A polyimide film includes a polyimide polymer forming a main molecular structure of the polyimide film, and polyimide particles present in the polyimide film at a weight ratio between about 15 wt % and 30 wt % of a total weight of the polyimide film, the polyimide particles having an average diameter between about 3 ?m and 8 ?m. The polyimide film can have a 60° gloss value equal to or smaller than 10, a haze equal to or higher than 90%, and a Young's modulus equal to or higher than 280 kgf/mm2. In some embodiments, methods of fabricating the polyimide film are also described.
    Type: Application
    Filed: April 10, 2014
    Publication date: January 15, 2015
    Applicant: TAIMIDE TECHNOLOGY INCORPORATION
    Inventors: Chih-Wei Lin, Meng-Ying Tsai
  • Publication number: 20150000519
    Abstract: This invention relates to high hydrocarbon resistant chemically cross-linked aromatic polyimide polymers, membranes and methods for making and using these polymers and membranes. The high hydrocarbon resistant chemically cross-linked aromatic polyimide membrane described in the present invention comprises a plurality of repeating units of a first aromatic polyimide comprising hydroxyl groups cross-linked with a second aromatic polyimide comprising carboxylic acid groups via covalent ester bonds. These membranes exhibit high permeability and selectivity in separation of mixtures of gases and liquids.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Chunqing Liu, Zara Osman
  • Publication number: 20140350179
    Abstract: The present invention relates to a liquid crystal alignment agent, a liquid crystal alignment film made by the liquid crystal alignment agent and a liquid crystal display element having the liquid crystal alignment film. The liquid crystal alignment agent includes a polymer composition (A) and a solvent (B). The polymer composition (A) is synthesized by reacting a mixture that includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The aforementioned liquid crystal alignment agent has a better long-term printability.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 27, 2014
    Applicant: CHI MEI CORPORATION
    Inventor: Tsung-Pei TSAI
  • Publication number: 20140343223
    Abstract: This disclosure relates to a process of purifying a polymer. The process includes (a) providing an organic solution containing a polyimide or polyamic ester in at least one polar, aprotic polymerization solvent; (b) adding at least one purification solvent to the organic solution to form a diluted organic solution, the at least one purification solvent is less polar than the at least one polymerization solvent and has a lower water solubility than the at least one polymerization solvent at 25° C.; (c) washing the diluted organic solution with water or an aqueous solution to obtain a washed organic solution; and (d) removing at least a portion of the at least one purification solvent in the washed organic solution to obtain a solution containing a purified polyimide or polyamic ester. This disclosure also relates to a process of preparing a film on a semiconductor substrate, as well as related purified polymer solutions, films, and articles.
    Type: Application
    Filed: May 19, 2014
    Publication date: November 20, 2014
    Applicant: Fujifilm Electronic Materials U.S.A., Inc.
    Inventors: William A. Reinerth, Sanjay Malik, Binod B. De
  • Publication number: 20140329936
    Abstract: One-part thermosetting binder compositions are described that may include soy protein, a first crosslinking compound, and a second crosslinking compound different from the first crosslinking compound. Upon curing, the first and second crosslinking compounds covalently bond to each other and to the soy protein to form a thermoset binder. Also describe are fiber-containing products that include a plurality of fibers and a formaldehyde-free binder. The formaldehyde-free binder is formed from a one-part, thermosetting binder composition that includes soy protein, a first crosslinking compound, and a second crosslinking compound different from the first crosslinking compound. Upon curing, the first and second crosslinking compounds covalently bond to each other and to the soy protein to form a thermoset binder.
    Type: Application
    Filed: July 18, 2014
    Publication date: November 6, 2014
    Inventors: Mingfu Zhang, Philip Francis Miele, Jawed Asrar
  • Publication number: 20140295349
    Abstract: The present invention relates to novel antireflective coating compositions and their use in image processing. The compositions self-segregate to form hydrophobic surfaces of the novel antireflective coating compositions, the composition being situated between a reflective substrate and a photoresist coating. Such compositions are particularly useful in the fabrication of semiconductor devices by photolithographic techniques. The present invention also related to self-segregating polymers useful in image processing and processes of their use.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 2, 2014
    Applicant: AZ ELECTRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Huirong YAO, JoonYeon CHO, Zachary BOGUSZ, Salem K. MULLEN, Guanyang LIN, Mark O. NEISSER
  • Publication number: 20140296408
    Abstract: The present invention relates to insulating material for an electronic device that may inhibit damage to an electronic device due to a high temperature curing process, and simultaneously exhibit excellent properties and reliability. The insulating material for an electronic device comprises soluble polyimide resin comprising a specific repeat unit, exhibits imidization degree of 70% or more after curing at a temperature of 250° C., and comprises a low boiling point solvent having boiling point of 130 to 180° C. as a residual solvent.
    Type: Application
    Filed: January 11, 2013
    Publication date: October 2, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Sang-Woo Kim, Mi-Ra Im, Kyung-Jun Kim, Chan-Hyo Park, Kyou-Hyun Nam
  • Publication number: 20140248445
    Abstract: A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films 109 comprises photoreactive polyimide and/or polyamic acid provided with an alignment control ability by irradiation of substantially linearly polarized light.
    Type: Application
    Filed: May 9, 2014
    Publication date: September 4, 2014
    Applicants: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yasushi TOMIOKA, Hidetoshi ABE, Katsumi KONDO
  • Patent number: 8815999
    Abstract: Disclosed are novel cross-linkable end-cappers for oligo- and polyimides. End-capped oligo- and polyimides comprising such an end-capper may be cured at a lower temperature compared to oligo- and polyimides end-capped with PEPA.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: August 26, 2014
    Assignee: Nexam Chemical AB
    Inventors: Jan-Erik Rosenberg, Daniel Röme, David Persson, Erik Lager, Malin Knutsson, Dane Momcilovic
  • Publication number: 20140228513
    Abstract: The present invention relates to thermoplastic polyimides and to the synthesis thereof. The invention relates in particular to a method for manufacturing semi-aromatic thermoplastic polyimides by means of the solid-state polymerization of a solid ammonium carboxylate salt formed from an aliphatic diamine and an aromatic tetracarboxylic acid, thereby enabling powders having controlled particle sizes to be produced.
    Type: Application
    Filed: September 18, 2012
    Publication date: August 14, 2014
    Applicant: RHODIA OPERATIONS
    Inventors: Stephane Jeol, Vincent Mollet, Benjamin Paci
  • Publication number: 20140227501
    Abstract: The present disclosure is directed to a base film having a thickness from 8 to 152 microns, a 60 degree gloss value from 2 to 35, an optical density greater than or equal to 2 and a dielectric strength greater than 1400 V/mil. The base film comprises a chemically converted (partially or wholly aromatic) polyimide in an amount from 71 to 96 weight percent of the base film. The base film further comprises a pigment and a matting agent. The matting agent is present in an amount from 1.6 to 10 weight percent of the base film, and has a median particle size from 1.3 to 10 microns. The pigment is present in an amount from 2 to 9 weight percent of the base film. The present disclosure is also optionally directed to coverlay films comprising the base film in combination with an adhesive layer.
    Type: Application
    Filed: February 14, 2013
    Publication date: August 14, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: THOMAS EDWARD CARNEY, Jeffrey Michael Bartolin, Meredith L. Dunbar
  • Publication number: 20140228512
    Abstract: 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: Application
    Filed: December 27, 2013
    Publication date: August 14, 2014
    Applicant: Eternal Chemical Co., Ltd.
    Inventors: Meng-Yen Chou, Chung-Jen Wu
  • Publication number: 20140213722
    Abstract: A thermosetting composition containing a compound (A) and a compound (B) is described, wherein the compound (A) is a carboxylic acid ester having at least one group represented by formula (1): and the compound (B) is a diamine. In formula (1), R1 is alkyl having 1 to 10 carbons, R2 is independently alkylene having 2 or 3 carbons, and n is an integer of 1 to 3.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 31, 2014
    Applicant: JNC CORPORATION
    Inventors: TAKAYUKI HIROTA, HIROSHI ANRAKU, AYAKO KIKUCHI, HIROYUKI SATO