Patents Assigned to EMS-Inventa AG
  • 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: 5905119
    Abstract: A method for making glycidyl ether-functional (meth)acrylate copolymers includes the step of reacting a hydroxyalkyl-functional (meth)acrylate copolymer with an epihalohydrin in the presence of a suitable catalyst. The reactants may be reacted by an addition reaction catalyzed with a Lewis acid catalyst, followed by dehydrohalogenation with aqueous alkali solution. Alternatively, the reactants may be reacted in a phase transfer reaction employing quaternary ammonium or quaternary phosphonium phase transfer catalysts.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: May 18, 1999
    Assignee: EMS-Inventa AG
    Inventors: Andreas Kaplan, Rene Gisler, Albert Reich
  • Patent number: 5895808
    Abstract: A process for producing composite materials which can be thermally postformed, with a matrix of polylactam produced by means of activated anionic polymerization is offered.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: April 20, 1999
    Assignee: EMS-Inventa AG
    Inventors: Eduard Schmid, Roman Eder, Urs Wild
  • Patent number: 5889126
    Abstract: The invention relates to Amorphous and/or semicrystalline copolyesters containing .beta.-hydroxyalkylamide groups according to formula (I) ##STR1## whereinP=polymer chain of the polyesterR1=alkyl residues with 1-5 atoms or hydrogen or ##STR2## R2=alkyl residues with 1-5 C-atoms or hydrogen, R3=alkyl residues and 1-5 C-atoms or hydrogen, andn.gtoreq.2,with a molecular weight (Mn) of 300 to 15,000 and a hydroxyl value of 10 to 400 ?mg KOH/g!.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: March 30, 1999
    Assignee: EMS-Inventa AG
    Inventors: Andreas Kaplan, Rene Gisler, Eberhard Kinkelin
  • Patent number: 5886087
    Abstract: Colorless, amorphous polyamides, preferably their blends or alloys, and the molded articles with high alternate bending strengths that can be produced from them, are made available; they are made up from unbranched long chain monomer units and cycloaliphatic monomer units, and have high strength, high rigidity, high heat distortion, and good solvent resistance.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: March 23, 1999
    Assignee: EMS-Inventa AG
    Inventor: Hans Dalla Torre
  • Patent number: 5872192
    Abstract: Thermosetting powder coatings based on epoxide-containing acrylate copolymer resins are disclosed comprising:(A) an acrylate copolymer that contains glycidyl ether residues;(B) an aliphatic and/or cycloaliphatic polybasic acid and/or a polyol-modified anhydride of a polybasic acid and/or an amorphous or semi-crystalline carboxy-functional copolyester resin and/or a carboxy-functional acrylic resin;(C) and, optionally, fillers and/or pigments and/or additives wherein the acrylate copolymer (A) has a molecular weight (Mw) of 1,000 to 30,000 and a glass transition temperature of 20 to 120.degree. C. and is obtainable by, in a first step, preparing a hydroxyl-functional acrylate copolymer (D), which copolymer is then transformed into the acrylate copolymer (A), by reaction with epihaloalkanes. The aforementioned compositions can be processed further to give thermosetting powder coatings which can be applied to substrates such as metal to form protective coatings or films.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: February 16, 1999
    Assignee: EMS--Inventa AG
    Inventors: Andreas Kaplan, Rene Gisler, Albert Reich
  • Patent number: 5869190
    Abstract: The invention is directed to a new adhesion promoter composition based on polyamide having an excess of amino end groups and at least one diamine added to the polymerized polyamide, said diamine being selected from substituted or unsubstituted, aliphatic C.sub.4 -C.sub.20 diamines or mixtures thereof. The adhesion promoter tightly connects thermoplastically workable fluoropolymers based on VDF, TFE and HFP with polyamides. The invention is also directed to thermoplastic multi-layer composites having at least one inside layer of thermoplastically workable fluoropolymers, at least one adhesion promoter layer composed of the aforementioned adhesion promoter molding compound, and having at least one polyamide outside layer, wherein these layers are tightly connected to one another. Finally, the invention is directed to multi-layer polymer tubes.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: February 9, 1999
    Assignee: EMS-Inventa AG
    Inventor: Georg Stoeppelmann
  • Patent number: 5869157
    Abstract: The invention is directed to a new adhesion promoter composition based on polyamide having an excess of amino end groups and at least one diamine added to the polymerized polyamide, said diamine being selected from substituted or unsubstituted, aliphatic C.sub.4 -C.sub.20 diamines or mixtures thereof. The adhesion promoter tightly connects thermoplastically workable fluoropolymers based on VDF, TFE and HFP with polyamides. The invention is also directed to thermoplastic multi-layer composites having at least one inside layer of thermoplastically workable fluoropolymers, at least one adhesion promoter layer composed of the aforementioned adhesion promoter molding compound, and having at least one polyamide outside layer, wherein these layers are tightly connected to one another. Finally, the invention is directed to multi-layer polymer tubes.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: February 9, 1999
    Assignee: EMS-Inventa AG
    Inventor: Georg Stoeppelmann
  • Patent number: 5869594
    Abstract: The invention relates to novel hot-melt masses consisting of a statistically built-up copolyether ester based on terephthalic acid and a mixture of aliphatic diols. Terephthalic acid is used as the single acid component and its molar amount, relative to the total amount of acid, is 100 molar %. A combination of butane diol, diethylene glycol, polyethylene and optionally triethylene glycol is present as diol component. The molar amount of butane diol is less than 75 molar %, the amount of diethylene glycol is between 5 and 60 molar %, the amount of triethylene glycol between 0 and 40 molar % and at least 2 and at the most 10 molar % of a higher-molecular polyethylene glycol component with a molar mass of 600-4000 g/mole is used, relative to the total acid amount and total diol amount of 100 molar % in each instance. The melting point of the copolyether ester adhesive masses is between 90.degree. and 190.degree. C.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: February 9, 1999
    Assignee: EMS-Inventa AG
    Inventors: Eberhard Kinkelin, Gerhard Poessnecker, Jurgen Spindler
  • Patent number: 5866055
    Abstract: The present invention pertains to a process for the production of a polyester multifilament yarn having at least 90 mol % ethylene terephthalate with a single filament titer of 1 to 20 dtex, using a central quenching system, characterized in that the method has the following steps: Extrusion of a polyethylene terephthalate polymer melt through a spinneret that has a number of capillaries between 150 and 1500, adjusting a spacer length between 5 and 150 mm, cooling of the obtained threads by means of a constant blown-air speed profile defined in the thread transit direction in that it initially rises very quickly in the region facing the spinneret, then reaches a maximum and subsequently drops off initially very quickly, then more slowly, with the average blown air speed in the vicinity of the threads being between 0.15 and 1.5 m/sec, in such a manner that the undrawn yarn produced from the process has a birefringence of between 0.050 and 0.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: February 2, 1999
    Assignee: Ems-Inventa AG
    Inventors: Raimund Schwarz, Werner Stibal
  • Patent number: 5864007
    Abstract: A liquid system for executing the anionic lactam polymerization is proposed, which contains activator as well as catalyst and selectively additives and which is liquid at room temperature and remains stable when stored.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: January 26, 1999
    Assignee: EMS-Inventa AG
    Inventors: Eduard Schmid, Roman Eder
  • Patent number: 5859147
    Abstract: A polyamide composition which is amorphous and transparent, which has reduced flammability, and which has reduced migration of flame-retardant additive so that it is film-free, includes at least one polyamide which contains cycloaliphatic monomer units and which is amorphous and transparent; and a flame-retardant additive which is present in an amount effective to reduced flammability of the polyamide composition, which is dissolved in the at least one polyamide, and which is at least one alkyl phosphonic acid compound having a general formula: ##STR1## wherein R and R' each represent, independent of each other, an alkyl group having from 1 to 4 carbon atoms, and x=0 or 1. An article molded from this composition is transparent, has reduced flammability, and has reduced migration of flame-retardant additive so that it is film-free.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: January 12, 1999
    Assignee: EMS-Inventa AG
    Inventors: Hans Dalla Torre, Manfred Hewel
  • Patent number: 5850855
    Abstract: A flexible conduit for coolant having a high bursting pressure above 8 bar at 100.degree. C. and high hydrolysis resistance comprising an outer layer of a material selected from the group consisting of homopolyamides, copolyamides and mixtures thereof with an excess of amino terminal groups, a non-swelling inner layer made of a material selected from the group consisting of non-halogenated copolyolefins, non-halogenated homopolyolefins and mixtures thereof and a middle layer compatible with the inner and outer layers made of a homopolyolefin or a copolyolefin with grafted functional groups, the layers being coextruded and corrugated during coextrusion.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: December 22, 1998
    Assignee: Ems-Inventa AG
    Inventors: Franz Kerschbaumer, Wolfgang Pfleger, Georg Stoeppelmann
  • Patent number: 5847057
    Abstract: The invention relates to heat-curable coating compounds containing a carboxyl-functional polyester produced by a condensation reaction from aliphatic and/or cycloaliphatic and/or aromatic polycarboxylic acids and anhydrides, a .beta.-hydroxyalkylamide and special stabilizers.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: December 8, 1998
    Assignee: EMS--Inventa AG
    Inventors: Andreas Kaplan, Manfred Wenzler
  • Patent number: 5844048
    Abstract: Thermosetting powder coatings based on epoxide-containing acrylate copolymer resins are disclosed comprising:(A) an acrylate copolymer that contains glycidyl ether residues;(B) an aliphatic and/or cycloaliphatic polybasic acid and/or a polyol-modified anhydride of a polybasic acid and/or an amorphous or semi-crystalline carboxy-functional copolyester resin and/or a carboxy-functional acrylic resin;(C) and, optionally, fillers and/or pigments and/or additives wherein the acrylate copolymer (A) has a molecular weight (Mw) of 1,000 to 30,000 and a glass transition temperature of 20.degree. to 120.degree. C. and is obtainable by, in a first step, preparing a hydroxyl-functional acrylate copolymer (D), which copolymer is then transformed into the acrylate copolymer (A), by reaction with epihaloalkanes.The aforementioned compositions can be processed further to give thermosetting powder coatings which can be applied to substrates such as metal to form protective coatings or films.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: December 1, 1998
    Assignee: Ems-Inventa AG
    Inventors: Andreas Kaplan, Rene Gisler, Albert Reich
  • Patent number: 5804670
    Abstract: The invention is directed to a new adhesion promoter composition based on polyamide having an excess of amino end groups and at least one diamine added to the polymerized polyamide, said diamine being selected from substituted or unsubstituted, aliphatic C.sub.4 -C.sub.20 diamines or mixtures thereof. The adhesion promoter tightly connects thermoplastically workable fluoropolymers based on VDF, TFE and HFP with polyamides. The invention is also directed to thermoplastic multi-layer composites having at least one inside layer of thermoplastically workable fluoropolymers, at least one adhesion promoter layer composed of the aforementioned adhesion promoter molding compound, and having at least one polyamide outside layer, wherein these layers are tightly connected to one another. Finally, the invention is directed to multi-layer polymer tubes.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: September 8, 1998
    Assignee: Ems-Inventa AG
    Inventor: Georg Stoeppelmann
  • Patent number: 5792532
    Abstract: Polymer tubing, made of at least one polymer layer, has a partial section of the tubing which is corrugated and wherein the rings formed by the corrugations extend around the tube axis, with the corrugations being embodied at least partially in an oval shape or in the shape of an ellipse or in the form of a circle, which is flattened on one side.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: August 11, 1998
    Assignee: EMS-Inventa AG
    Inventor: Wolfgang Pfleger
  • Patent number: 5786430
    Abstract: Thermosetting powder coating compositions include at least one glycidic-ether containing amorphous and/or semi-crystalline copolyester and a cross-linking agent which is an aliphatic and/or cycloaliphatic polybasic acid and/or its anhydride and/or a polyolmodified anhydride of a polybasic acid and/or amorphous or semi-crystalline carboxyl-functional copolyester resins and/or carboxyl-functional acrylate resins.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: July 28, 1998
    Assignee: EMS-Inventa AG
    Inventors: Andreas Kaplan, Albert Reich, Rene Gisler
  • Patent number: 5783501
    Abstract: The invention relates to postcondensed paper machine felts comprising a polyamide base fabric and a polyamide coating needled thereon, the paper machine felts having a relative solution viscosity in sulfuric acid in accordance with the DIN 53,727 standard of 5 or more.The invention further relates to a method of increasing the molecular weight of paper machine felts which comprises impregnating the paper machine felts with a solution of postcondensation catalysts, followed by drying and thermally postcondensing the felts below the melting point of the polyamide in a solid phase by the exclusion of oxygen.
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: July 21, 1998
    Assignee: EMS-Inventa AG
    Inventors: Gustav Schuetze, Jurgen Spindler
  • 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