Cycloaliphatic Ring-containing Reactant Patents (Class 528/346)
  • Patent number: 9926288
    Abstract: A compound is of formula (I): in which A1 and A1? are independently from each other a linear or branched alkylene radical including from 1 to 20 carbon atom(s); A2 is in particular a linear or branched alkylene radical including from 1 to 200 carbon atom(s); A3 is H or a linear or branched alkyl radical including from 1 to 15 carbon atom(s) and R1 and R1? are independently from each other H or a linear or branched alkyl radical comprising from 1 to 20 carbon atom(s). The compounds of formula (I) can be used in particular for the preparation of poly(hydroxyurethane)s and epoxy resins.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: March 27, 2018
    Assignees: UNIVERSITÉ DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S), INSTITUT DES CORPS GRAS ETUDES ET RECHERCHES TECHNIQUES—ITERG
    Inventors: Henri Cramail, Etienne Grau, Carine Alfos, Lise Maisonneuve
  • Publication number: 20150141613
    Abstract: The invention relates to a polyamide comprising units derived from: A. a diamine comprising in its structure at least one cyclohexane fragment according to Structure I, in which the substituents are in the 1,4-trans-position (Structure I), with n a positive integer of at least 1, and the proviso that when n is 2 or higher the cyclohexane rings are connected to each other through the 1,4-trans position, B. an aliphatic dicarboxylic acid with at least 13 carbon atoms and optionally comprising units derived from: C. one or more aliphatic dicarboxylic acids other than B, D. one or more diamines other than A, E. one or more monofunctional carboxylic acids or monofunctional amines, F. one or more polyfunctional monomers comprising carboxylic acid and/or amine groups, G. one or more lactams or corresponding amino acids. The invention further relates to a composition comprising such a polyamide and its uses.
    Type: Application
    Filed: May 24, 2013
    Publication date: May 21, 2015
    Inventors: Rudy Rulkens, Atze Jan Nijenhuis
  • Patent number: 8883048
    Abstract: The present invention relates to a reflector for a light-emitting device consisting of (A) an polyamide composition comprising a polyamide polymerized from (a) a dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and (b) a diamine comprising at least 50 mol % of a diamine with a branched main chain.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: November 11, 2014
    Assignees: Asahi Kasei Chemicals Corporation, Nichia Corporation
    Inventors: Kazuhiko Hashimoto, Kazunori Terada, Masafumi Kuramoto, Motohisa Kitani
  • Patent number: 8835595
    Abstract: A polyamide compound containing: from 25 to 50 mol % of a diamine unit, which contains an aromatic diamine unit represented by the following formula (I), in an amount of 50 mol % or more; from 25 to 50 mol % of a dicarboxylic acid unit, which contains a linear aliphatic dicarboxylic acid unit represented by the following formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following formula (II-2), in an amount in total of 50 mol % or more; and from 0.1 to 50 mol % of a constitutional unit represented by the following formula (III): wherein n represents an integer of from 2 to 18, Ar represents an arylene group, and R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: September 16, 2014
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takafumi Oda, Ryoji Otaki, Shota Arakawa, Tsuneaki Masuda, Hiroyuki Matsushita, Ryuji Hasemi
  • Patent number: 8822629
    Abstract: The present invention relates to a method of prepairing a heat-resistant polyamide by carrying out condensation polymerization with a monomer mixture including a diester compound and a diamine compound. The present invention provides an economical method of prepairing a heat-resistant polyamide in that a monomer, a raw material, is simply and chiefly prepared, and the polymerizing reaction time is short because it does not need solvent separately.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: September 2, 2014
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Dong-June Hwang, Jae-Bong Lim, Seung-Do Leem, Tae-Young Kim, Sung-su Bae
  • Publication number: 20140221600
    Abstract: This invention relates to a biaxially stretched product comprising a copolyamide comprising monomeric units of: aliphatic non-cyclic diamines X and aliphatic non-cyclic dicarboxylic acids Y or aliphatic non-cyclic ?,?-amino acids Z, and diamines M and diacids N in an amount between 0.1 to 2 wt % based on the total amount of copolyamide, and in which M and N are cyclic, and wherein the product has been stretched at a temperature of between the glass transition temperature (Tg) and the melting temperature (Tm). A method of preparation is claimed, as well as a multilayer film comprising the biaxially stretched product.
    Type: Application
    Filed: June 28, 2012
    Publication date: August 7, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Alexander Antonius Marie Sroeks, Serbia Tomic
  • Publication number: 20140134371
    Abstract: A transparent polyamide elastomer of the general structure (I), where R1 is a polyamide segment formed from a) 10-100 mol % of alkyl-substituted bis(aminocyclohexyl)methane or bis(aminocyclohexyl)propane and 0-90 mol % of other cycloaliphatic, aliphatic or aromatic C6-C36 diamines, based on the total amount of diamine in the polyamide segment, and b) aliphatic C4-C36 dicarboxylic acids, cycloaliphatic or aromatic C8-C36 dicarboxylic acids, and c) optionally lactams or aminocarboxylic acids C6-C12, R2 being selected from the group of the divalent radicals: linear or branched C2-C5 polyoxyalkylene, polyolefin, polysiloxane with a number-average molar mass in the range of 200-3000 g/mol, C2-C36 alkylene, C6-C36 cycloalkylene, C6-C20 aryl, polycaprolactone, polyesters based on aliphatic or cycloaliphatic dicarboxylic acids and diols, aliphatic polycarbonate, and also copolymers of or mixtures of these elements, and X1 and X2 independently of one another being amide (CONH) or ester (COO) bonds.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 15, 2014
    Applicant: EMS-PATENT AG
    Inventors: Botho HOFFMANN, Heinz HOFF
  • Publication number: 20130281563
    Abstract: Provided is a polyamide polymer in which a partial structure represented by the following formula (C) constitutes a portion of the main chain: wherein in Formula (C), RA and RB each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; n and m each independently represent an integer from 0 to 2; Cy represents an unsaturated 6-membered or 7-membered ring which may contain a heteroatom; and * and ** each represent a bonding hand, while * may be a bonding hand extending from RA.
    Type: Application
    Filed: June 20, 2013
    Publication date: October 24, 2013
    Inventors: Shigeki UEHIRA, Toshihide YOSHITANI, Toshimitsu SAKUMA, Kozo SATO
  • Patent number: 8563679
    Abstract: The present invention relates to the use of a system composed of a base and of a sulphonamide, as a catalyst for the ring-opening (co)polymerization of lactones. The present invention also relates to novel sulphonamides and to a process for the ring-opening (co)polymerization of lactones comprising the use of sulphonamides in combination with a base as a catalytic system.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: October 22, 2013
    Assignee: Ipsen Pharma S.A.S.
    Inventors: Didier Bourissou, Blanca Martin-Vaca, Aurelie Alba, Roland Cherif-Cheikh, Anne-Paula De Sousa Delgado
  • Patent number: 8519040
    Abstract: Disclosed are a novel ionic organic compound and a method for producing the ionic organic compound by a simple process. Also disclosed are a hydrogelling agent composed of an ionic organic compound obtained by the method, an alcohol gelling agent, a gel which uses the gelling agent, while using water or methanol as a medium, and a carbon nanotube dispersant composed of the compound. Specifically disclosed is an ionic organic compound represented by general formula (1). The compound is obtained by a condensation reaction of (A) an aromatic diamide compound or cyclohexane diamide compound having a 4-(chloromethyl)benzamide group at both ends, and (B) a compound selected from N,N,N?,N?-tetramethylalkylenediamines which may have a substituent wherein there are 1-6 carbon atoms between nitrogen atoms. The thus-obtained ionic organic compound serves as a gelling agent which is capable of gelling a neutral aqueous solution or an alcohol.
    Type: Grant
    Filed: September 7, 2009
    Date of Patent: August 27, 2013
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Masaru Yoshida, Nagatoshi Koumura, Harumi Ohyama, Nobuyuki Tamaoki
  • Patent number: 8487024
    Abstract: The present invention relates to a polyamide obtainable by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a substituent branched from a main chain.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: July 16, 2013
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Yasukazu Shikano, Teruaki Sakuma, Hiroki Matsui, Masaaki Aramaki, Yu Nitto, Shinji Ieda
  • Publication number: 20130178597
    Abstract: Disclosed is a novel co-polyimide precursor for producing a polyimide having high transparency.
    Type: Application
    Filed: July 22, 2011
    Publication date: July 11, 2013
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Ryoichi Takasawa, Takuya Oka, Yukinori Kohama, Miharu Nakagawa, Nobuharu Hisano, Masafumi Kohda, Takeshige Nakayama, Tomonori Nakayama
  • Patent number: 8440317
    Abstract: A protective film for a polarizing membrane is provided which is prevented in light leakage generation, and excellent in moldability. The protective film contains a polyamide resin, and is subjected to an orientation (e.g., a drawing) to have a retardation value of not less than 300 nm. The polyamide resin may also contain an alicyclic polyamide resin, e.g., a resin whose monomers are an alicyclic diamine and an aliphatic dicarboxylic acid. The polyamide resin may have microcrystallinity. The Abbe number of the polyamide resin may be not less than 40.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: May 14, 2013
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Nagayoshi Tsukane, Tatsuo Izumitani
  • Publication number: 20130085257
    Abstract: A method for producing an aqueous diamine dicarboxylic acid salt solution according to the present invention comprises a step of mixing a dicarboxylic acid diester and a diamine, wherein a mixing molar ratio of the diamine to the dicarboxylic acid diester (diamine/dicarboxylic acid diester) is 1.005 or more. In addition, a method for producing a polyamide according to the present invention comprises a step of mixing a dicarboxylic acid diester and a diamine and heating the formed aqueous diamine dicarboxylic acid salt solution to perform a polycondensation reaction of the diamine and a dicarboxylic acid, wherein a mixing molar ratio of the diamine to the dicarboxylic acid diester (diamine/dicarboxylic acid diester) is 1.005 or more.
    Type: Application
    Filed: June 23, 2011
    Publication date: April 4, 2013
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yu Nitto, Hajime Nagahara
  • Publication number: 20130041128
    Abstract: A polyamide compound containing from 25 to 50 mol % of a diamine unit that contains at least 50 mol % of an alicyclic diamine unit represented by the following general formula (I); from 25 to 50 mol % of a dicarboxylic acid unit that contains a linear aliphatic dicarboxylic acid unit represented by the following general formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following general formula (II-2) in an amount of at least 50 mol % in total; and from 0.1 to 50 mol % of a constituent unit represented by the following general formula (III): wherein, in the formulae, n indicates an integer of from 2 to 18; Ar represents an arylene group; and R represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.
    Type: Application
    Filed: February 23, 2011
    Publication date: February 14, 2013
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY,INC.
    Inventors: Takafumi Oda, Ryoji Otaki, Tsuneaki Masuda
  • Publication number: 20120228564
    Abstract: The present invention relates to a reflector for a light-emitting device consisting of (A) an polyamide composition comprising a polyamide polymerized from (a) a dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and (b) a diamine comprising at least 50 mol % of a diamine with a branched main chain.
    Type: Application
    Filed: September 7, 2010
    Publication date: September 13, 2012
    Applicants: NICHIA CORPORATION, ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiko Hashimoto, Kazunori Terada, Masafumi Kuramoto, Motohisa Kitani
  • Publication number: 20120165466
    Abstract: [Problem to be Solved] To provide a polyamide having a high melting point, which has excellent strength, toughness, and stability under heating. [Solution] This polyamide is obtained by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end amount of 30 to 60? equivalents/g.
    Type: Application
    Filed: September 7, 2010
    Publication date: June 28, 2012
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yu Nitto, Yasukazu Shikano, Shinji Ieda, Kazunori Terada, Masaaki Aramaki
  • Publication number: 20120046438
    Abstract: A method for making polyamide is described. More particularly, a method for making a polyamide from at least one diacid and one diamine, that includes a step of concentrating an aqueous solution of diacid and diamine salt up to a salt weight concentration higher than 85%, and a polymerization step up to a desired polymerization degree is described.
    Type: Application
    Filed: March 9, 2010
    Publication date: February 23, 2012
    Applicant: Rhodia Operations
    Inventors: Virginie Thieblemont, Jean-Francois Thierry
  • Publication number: 20120029163
    Abstract: The present invention relates to a method of prepairing a heat-resistant polyamide by carrying out condensation polymerisation with a monomer mixture including a diester compound and a diamine compound. The present invention provides an economical method of prepairing a heat-resistant polyamide in that a monomer, a raw material, is simply and chiefly prepared, and the polymerizing reaction time is short because it does not need solvent separately.
    Type: Application
    Filed: April 10, 2009
    Publication date: February 2, 2012
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Dong-June Hwang, Jae-Bong Lim, Seung-Do Leem, Tae-young Kim, Sung-su Bae
  • Publication number: 20110318588
    Abstract: The purpose of the present invention is to provide a polyimide resin which exhibits higher heat resistance than that of a conventional polyimide resin by controlling the geometric configuration of the constituent units. Provided is a polyamic acid which comprises repeating units represented by general formula (1), wherein the 1,4-bismethylenecyclohexane skeleton units consist of both trans- and cis-form units, and the contents of the trans- and cis-form units are 60 to 100% and 0 to 40% respectively (with the sum total of the trans- and cis-form units being 100%).
    Type: Application
    Filed: February 26, 2010
    Publication date: December 29, 2011
    Applicant: Mitsu Chemicals Inc,
    Inventors: Kenichi Fukukawa, Masaki Okazaki, Yoshihiro Sakata, Ichiro Fujio, Wataru Yamashita
  • Patent number: 8044171
    Abstract: The invention relates to a polyamide molding material or copolyamide molding material and the use of such a polyamide molding material or copolyamide molding material for producing steam-sterilizable transparent moldings and extrudates. This polyamide molding material is characterized in that it comprises at least one copolyamide formed from 35-42 mol % of bis(4-amino-3-methylcyclohexyl)methane (MACM), 35-42 mol % of isophthalic acid (IPS) and 16-30 mol % of laurolactam (LC12). MACM may be replaced up to 50% by bis(4-aminocyclohexyl)-methane (PACM) and IPA up to 50% by terephthalic acid (TPA). The polyamide molding material may also be a blend of copolyamides or a blend of copolyamides with polyamide 12. The relative viscosity (RV) of the polyamide molding material or copolyamide molding material is in any case adjusted to a value which is greater than 1.45.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: October 25, 2011
    Assignee: EMS-Chemie AG
    Inventors: Friedrich Severin Buhler, Ralf Hala
  • Publication number: 20110192319
    Abstract: Conventional toughening agents are typically rubbery materials or small molecular weight molecules, which mostly sacrifice the intrinsic properties of a matrix such as modulus, strength, and thermal stability as side effects. On the other hand, high modulus inclusions tend to reinforce elastic modulus very efficiently, but not the strength very well. For example, mechanical reinforcement with inorganic inclusions often degrades the composite toughness, encountering a frequent catastrophic brittle failure triggered by minute chips and cracks. Thus, toughening generally conflicts with mechanical reinforcement. Carbon nanotubes have been used as efficient reinforcing agents in various applications due to their combination of extraordinary mechanical, electrical, and thermal properties.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 11, 2011
    Applicant: USA as represented by the Administrator of the National Aeronautics and Space Admi
    Inventors: Cheol Park, Dennis C. Working, Emilie J. Siochi, Joycelyn S. Harrison
  • Publication number: 20110149220
    Abstract: An alignment layer according to an exemplary embodiment of the present invention includes a polyimide, wherein the polyimide is derived from a composition including a dianhydride-based compound, and a compound represented by a Chemical Formula 1: wherein, in the above Chemical Formula 1, X1 and X2 are independently F, Cl, or CN, and R1 is a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C1-C12 alkoxy group, a substituted or non-substituted C1-C12 halogen-containing alkyl group, a substituted or non-substituted C1-C12 halogen-containing alkoxy group, or a combination thereof.
    Type: Application
    Filed: June 17, 2010
    Publication date: June 23, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ho-Yun BYUN, Jeong-Uk Heo, Ji-Yoon Jung, Na-Young Shin
  • Publication number: 20110136989
    Abstract: Ethanol soluble or dispersible polyetheramide polymers that have a percent elongation to break of less than 100%. The polymers are formed from a reaction mixture comprising at least one or more poly(alkyleneoxy) diamines and one or more diacids. The reaction mixture can optionally include one or more aliphatic diamines in addition to the one or more poly(alkyleneoxy) diamines. The polyetheramide polymers have application in personal care compositions such as hair fixative compositions, for example, hair spray formulations.
    Type: Application
    Filed: February 16, 2011
    Publication date: June 9, 2011
    Applicant: AKZO NOBEL N.V.
    Inventors: Michael Philbin, Carmine Iovine, Jean-Pierre Leblanc
  • Publication number: 20110111154
    Abstract: The invention relates to a polyamide comprising at least one repeat unit corresponding to the general formulation: X·Y in which: X represents a cycloaliphatic diamine and Y represents an aliphatic dicarboxylic acid chosen from dodecanedioic (C12) acid, tetradecanedioic (C14) acid and hexadecanedioic (C16) acid, characterized in that said dicarboxylic acid comprises organic carbon of renewable origin, determined according to Standard ASTM D6866. The invention also relates to a composition comprising this polyamide and also to the use of this polyamide and of such a composition.
    Type: Application
    Filed: June 19, 2009
    Publication date: May 12, 2011
    Applicant: ARKEMA FRANCE
    Inventors: Guillaume LÊ, Julien Jouanneau, Benjamin Saillard
  • Publication number: 20110105697
    Abstract: The invention relates to polyamide moulded masses based on semi-crystalline, transparent copolyamides predominantly based on aliphatic monomers, for producing transparent or pigmentable moulded parts with a high level of flexibility, high notch-impact strength (Charpy), low water absorbency and excellent resistance to chemicals, containing between 40 and 100 wt. % of at least one transparent copolyamide (constituent A) with a maximum glass transition temperature (Tg) of 80° C. and a melting temperature of at least 150° C.
    Type: Application
    Filed: June 18, 2009
    Publication date: May 5, 2011
    Applicant: EMS-PATENT AG
    Inventors: Friedrich Severin Buhler, Ralf Hala, Sepp Bass
  • Publication number: 20110028614
    Abstract: The present invention relates to a polyamide obtainable by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a substituent branched from a main chain.
    Type: Application
    Filed: March 11, 2009
    Publication date: February 3, 2011
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yasukazu Shikano, Teruaki Sakuma, Hiroki Matsui, Masaaki Aramaki, Yu Nitto, Shinji Ieda
  • Publication number: 20090299014
    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: Application
    Filed: June 2, 2009
    Publication date: December 3, 2009
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae Min OH, Tae Hyoung KWAK, Ji Young JEONG
  • Patent number: 7407544
    Abstract: Dispersants for pigments as well as dispersions of pigments containing them, and compositions such as inks and coatings containing them are described. The dispersants are the reaction product of a dialkylsuccinyl succinate and an amine.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: August 5, 2008
    Assignee: Sun Chemical Corporation
    Inventors: Tatiana N. Romanova, Ed Sung, Russell J. Schwartz
  • Patent number: 7138476
    Abstract: Golf balls comprising thermoplastic, thermoset, castable, or millable elastomer compositions are presently disclosed. These compositions comprise at least one fatty compound chosen from fatty polyamines and fatty polyamine telechelics. These elastomer compositions can be used in any one or more portions of the golf balls, such as inner center, core, inner core layer, intermediate core layer, outer core layer, intermediate layer, cover, inner cover layer, intermediate cover layer, and/or outer cover layer.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: November 21, 2006
    Assignee: Acushnet Company
    Inventor: Shenshen Wu
  • Patent number: 7115703
    Abstract: Golf balls comprising thermoplastic, thermoset, castable, or millable compositions are presently disclosed. These compositions comprise reaction products of polyacids and polyamines. The polyacid is chosen from polymerized fatty polyacids and polyacid telechelics. These compositions can be used in any one or more portions of the golf balls, such as inner center, core, inner core layer, intermediate core layer, outer core layer, intermediate layer, cover, inner cover layer, intermediate cover layer, and/or outer cover layer.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: October 3, 2006
    Assignee: Acushnet Company
    Inventors: Manjari Kuntimaddi, Shenshen Wu
  • Patent number: 7053169
    Abstract: The invention relates to new thermoplastically processible transparent polyamide molding materials based on copolyamides containing diamines and dicarboxylic acids with aromatic cores which exhibit a high index of refraction nD20 over 1.59 and a low density under 1.3 g/cm3. At the same time, a low birefringence, high hardness, and scratchresistance are achieved. The polyamide molding materials are fabricated by means of conventional pressure reactors (autoclaves) according to a modified technique. The granulate that is produced from the inventive molding materials is reshaped by thermoplastic processes like injection molding, particularly in multichamber cavity tools. The invention also relates to the utilization of the inventive molding materials for producing optical lenses.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: May 30, 2006
    Assignee: Ems-Chemie AG
    Inventor: Friedrich Severin Bühler
  • Patent number: 6956099
    Abstract: Copolymers having linked internal polyether blocks and internal polyamide blocks have advantageous physical properties and solvent-gelling abilities. The copolymer may be prepared from a reaction mixture that contains 1,4-cyclohexane dicarboxylic acid (CHDA) and poly(alkyleneoxy) diamine (PAODA). Optionally, the reaction mixture contains no monofunctional compound reactive with either amine or carboxylic acid groups, however some of this monofunctional compound may be present. Dimer diamine and/or dimer acid may be present in the reaction mixture. A copolymer may also be prepared from a reaction mixture containing dimer acid and at least two diamine compound(s) including PAODA and short-chain aliphatic diamine having 2-6 carbons (SDA), wherein: a) the reaction mixture comprises x grams of PAODA and y grams of SDA, and x/(x+y) is 0.8-0.98; b) the reaction mixture weighs z grams, and x/z is at least 0.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: October 18, 2005
    Assignee: Arizona Chemical Company
    Inventor: Mark S. Pavlin
  • Patent number: 6943231
    Abstract: Transparent polyamide molding materials are provided which are characterized in that they have a melting enthalpy between 0 and 12 J/g and the polyamides are constituted of 100 mole-% of a diamine mixture having 10-70 mole-% of PACM [bis-(4-amino-cyclohexyl)-methane] with less than 50 wt.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: September 13, 2005
    Assignee: EMS-Chemie AG
    Inventor: Friedrich Severin Bühler
  • Patent number: 6936682
    Abstract: A polyamide characterized in that the polyamide is obtained by thermal polycondensation of (a) dicarboxylic acid components comprising 10 to 80% by mole in total carboxylic acid components of 1,4-cyclohexanedicarboxylic acid having a trans/cis molar ratio of 50/50 to 97/3 and (b) an aliphatic diamine component is disclosed. The alicyclic polyamide having 1,4-cyclohexanedicarboxylic acid in a backbone thereof as a dicarboxylic acid unit, which is suitable as materials for various uses such as automotive parts, electric/electronics parts, industrial materials, engineering materials and daily household goods, and superior in heat resistance, low water absorption, light resistance, moldability and light weight, as well as superior in toughness, chemical resistance and appearance, and molded articles thereof.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: August 30, 2005
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Masaaki Aramaki, Tomofumi Maekawa
  • Patent number: 6831137
    Abstract: The invention concerns a transparent polyamide alloy, produced by compounding it from 30-98% by weight of a transparent, amorphous, rigid and brittle polyamide A with at least 35 mole % cyclo-aliphatic diamine and a glass transition point of at least 150° C., and 2-70% by weight of a transparent, impact resistant polyamide B with at least 40-80 mole % of at least one long-chain polyamide-forming monomer, with more than 10 carbon atoms and at least 10 mole % terephthalic acid and a glass transition point of under 70° C.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: December 14, 2004
    Assignee: EMS Inventa AG
    Inventors: Hans Dalla Torre, Manfred Hewel
  • Patent number: 6824949
    Abstract: There are disclosed polybenzoxazole precursors which can be processed by centrifugal techniques, which can be cyclized to polybenzoxazoles on substrates without difficulty, and which after cyclization to polybenzoxazoles exhibit a high temperature stability. In particular, these precursors and the polybenzoxazoles prepared from them possess high resistance against the diffusion of metals.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: November 30, 2004
    Assignee: Infineon Technologies AG
    Inventors: Jörg Haussmann, Gerhard Maier, Günter Schmid, Recai Sezi
  • Patent number: 6753048
    Abstract: A material for a liquid-crystal alignment film which comprises as a first polyamide a C3 to C10 alkyl ester of a polyamic acid whose acid anhydride residual group is any of: and as a second polyamide a C3 to C10 alkyl ester of a polyamic acid whose acid anhydride residual group is: is provided. The use of this material materializes a liquid-crystal alignment film having a high pre-tilt angle of molecules to the substrate, and having superiority in respect of electrical properties such as voltage holding ratio and residual DC voltage, adherence to substrates, printability, and step-covering properties.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: June 22, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Nobuhito Katsumura, Haruhiko Kikawa, Takashi Inoue, Masahiro Yamada, Yasuo Koike, Nobuhiko Fukuoka, Hiromu Terao
  • Patent number: 6720040
    Abstract: A material for a liquid-crystal alignment film which comprises as a first polyamide a C3 to C10 alkyl ester of a polyamic acid whose acid anhydride residual group is any of: and as a second polyamide a C3 to C10 alkyl ester of a polyamic acid whose acid anhydride residual group is: is provided. The use of this material materializes a liquid-crystal alignment film having a high pre-tilt angle of molecules to the substrate, and having superiority in respect of electrical properties such as voltage holding ratio and residual DC voltage, adherence to substrates, printability, and step-covering properties.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: April 13, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Nobuhito Katsumura, Haruhiko Kikawa, Takashi Inoue, Masahiro Yamada, Yasuo Koike, Nobuhiko Fukuoka, Hiromu Terao
  • Publication number: 20040049006
    Abstract: A polyamide characterized in that the polyamide is obtained by thermal polycondensation of (a) dicarboxylic acid components comprising 10 to 80% by mole in total carboxylic acid components of 1,4-cyclohexanedicarboxylic acid having a trans/cis molar ratio of 50/50 to 97/3 and (b) an aliphatic diamine component is disclosed. The alicyclic polyamide having 1,4-cyclohexanedicarboxylic acid in a backbone thereof as a dicarboxylic acid unit, which is suitable as materials for various uses such as automotive parts, electric/electronics parts, industrial materials, engineering materials and daily household goods, and superior in heat resistance, low water absorption, light resistance, moldability and light weight, as well as superior in toughness, chemical resistance and appearance, and molded articles thereof.
    Type: Application
    Filed: June 10, 2003
    Publication date: March 11, 2004
    Inventors: Masaaki Aramaki, Tomofumi Maekawa
  • Patent number: 6414103
    Abstract: A coating powder comprising a macrocyclic oligomer and a ring-opening polymerization agent is applied to an article, fused, and converted to a linear polymer at a temperature of from about 160 to about 400° C. The powder has the low melt viscosity and friability of a thermoset powder but is converted at high fusing temperatures to a tough coating having the good impact resistance and good elongation of a thermoplastic powder. The oligomer is a polyester, polycarbonate, polyamide, polyimide, polyamideimide. The article may be coated electrostatically or in a fluidized bed.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: July 2, 2002
    Assignee: Rohm and Haas Company
    Inventors: Glenn D. Correll, Tina L. Tullos, Gordon L. Tullos
  • Patent number: 6392009
    Abstract: Benzobisazole polymers having repeating units of the formula wherein Z is wherein X is —S—, —O— or —NH—.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: May 21, 2002
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Fred E. Arnold, Thuy D. Dang, Narayanan Venkatasubramanian
  • Patent number: 6277911
    Abstract: Colorless, amorphous, transparent copolyamides, their blends or alloys, and molded articles with high alternate bending strengths that can be produced from them. The copolyamides are preferably made of cycloaliphatic diamines combined with aliphatic dicarboxylic acids and small amounts of aromatic dicarboxylic acids. The copolyamides exhibit high strength, high rigidity, high heat distortion, and good solvent resistance.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: August 21, 2001
    Assignee: EMS Inventa AG
    Inventor: Hans Dalla Torre
  • Patent number: 6204355
    Abstract: The invention relates to the use of polyamide moulding compounds, their alloys or blends, which contain at least one homopolyamide, which has been obtained from long-chained aliphatic monomer blocks with cycloaliphatic monomer blocks, in order to manufacture moulded members for optical or electro-optical applications.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: March 20, 2001
    Assignee: EMS-Inventa AG
    Inventors: Hans Dalla Torre, Ralf Hala
  • Patent number: 6172178
    Abstract: Car part made from a polyamide composition wherein the polyamide substantially consists of 60-99 wt. % units derived from aliphatic dicarboxylic acids and diamines and the remaining chain units are derived from cycloaliphatic dicarboxylic acid(s) and an aliphatic diamine or cycloaliphatic diamine(s) and an aliphatic dicarboxylic acid.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: January 9, 2001
    Assignee: DSM N.V.
    Inventors: Cornelis E. Koning, Johannes Tijssen
  • Patent number: 6008288
    Abstract: Colorless, amorphous polyamides, their blends or alloys, and the molded articles with high alternate bending strengths that can be produced from them, are made available; they are preferably made up of cycloaliphatic diamines combined with aliphatic dicarboxylic acids and small amounts of aromatic dicarboxylic acids which show at the same time high strength, high rigidity, high heat distortion, and good solvent resistance.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: December 28, 1999
    Assignee: EMS-Inventa AG
    Inventor: Hans Dalla Torre
  • Patent number: 5959070
    Abstract: A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and ladder polymers are employed in light emitting diodes.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: September 28, 1999
    Assignee: University of Rochester
    Inventors: Samson A. Jenekhe, John A. Osaheni
  • Patent number: 5917001
    Abstract: An uncoated lens, especially for use as the lens of a fog light or a headlight for an automobile, and having particularly good resistance against the environmental effects which are inherent in this environment, is formed of a colorless, transparent copolyamide having a glass transition temperature of at least a 170.degree. C., blended with a homopolyamide, and wherein the copolyamide is formed from at least one cycloaliphatic diamine with two cyclohexane rings, and at least one aromatic dicarboxylic acid which is predominantly isophthalic acid. The copolyamide may optionally contain up to 20 mol % of a further polyamide forming monomer of at least one lactam or an omega-aminocarboxylic acid. The homopolyamide is preferably one of PA6, PA11, PA12, PA66, PA69, PA610 or PA612. The cycloaliphatic diamine of the copolyamide is preferably bis(3-methyl-4-aminocyclohexyl)-methane.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: June 29, 1999
    Assignee: EMS-Inventa AG
    Inventors: Susanne Laederach, Hans Dalla Torre
  • Patent number: 5773558
    Abstract: Colorless, amorphous polyamide, or blends or alloys thereof, and the molded articles with high alternate bending strengths are made available; they are preferably made up of unbranched aliphatic diamines and cycloaliphatic dicarboxylic acids, and have high strength, high rigidity, high heat distortion, and good solvent resistance.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: June 30, 1998
    Assignee: EMS-Inventa AG
    Inventor: Hans Dalla Torre
  • Patent number: 5696202
    Abstract: Colorless, amorphous polyamides, their blends or alloys, and the molded articles with high alternate bending strengths that can be produced from them, are made available; they are preferably made up of aliphatic diamines and aliphatic dicarboxylic acids, and at the same time have high strength, high rigidity, high heat distortion, and good solvent resistance.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: December 9, 1997
    Assignee: Ems-Inventa AG
    Inventor: Phil. Hans Dalla Torre