Patents Represented by Attorney Joseph C. Gil
  • Patent number: 7214752
    Abstract: Homopolymers suitable for storage of information provided optically are disclosed.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: May 8, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Horst Berneth, Uwe Claussen, Serguei Kostromine, Ralf Neigl, Hans-Joachim Vedder
  • Patent number: 7208564
    Abstract: A branched (co)polyformal is disclosed. The (co)polyformal contains structural units conforming to at least one the general formulae (1a) and (1b) wherein each of -E- and -D- independently of one another denote an aromatic radical having 6 to 40 C atoms, k is 1 to 4,000, o is 1 to 4,000, m is z/o and n is (o-z)/o, where z is 0 to o. The branched (co)polyformal is characterized by its reduced water uptake and improved hydrolytic stability. Also disclosed are processes for its preparation and use in the production of molded articles.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: April 24, 2007
    Assignee: Bayer Materialscience AG
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann, Heiner Onckels
  • Patent number: 7205439
    Abstract: Di- and polyamines of the diphenylmethane series are prepared by a) mixing a first portion of aniline with an acid catalyst, b) mixing a second portion of aniline with formaldehyde, and c) mixing and reacting the mixtures prepared in each of steps a) and b). The diamines produced by this process may then be phosgenated to produce the corresponding di-/polyisocyanate.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: April 17, 2007
    Assignee: Bayer Materialscience AG
    Inventors: Torsten Hagen, Stefan Grabowski, Richard Adamson, Daniel Koch, Stefan Wershofen
  • Patent number: 7205430
    Abstract: The invention relates to a process for the production of di- and polyisocyanates of the diphenylmethane series and mixtures thereof, in which aniline and formaldehyde are reacted in the presence of an acid catalyst to form di- and polyamines of the diphenylmethane series; the di- and polyamines of the diphenylmethane series are phosgenated, optionally in the presence of a solvent, to obtain a crude di- and polyisocyanate; from the crude di- and polyisocyanate, at least one fraction containing at least 5 wt. % 3-ring and multi-ring MDI and at least one fraction containing at least 95 wt. % 2-ring MDI are separated by distillation, and the acidities of the fraction containing at least 5 wt. % 3-ring MDI and multi-ring MDI, and/or the fraction containing at least 95 wt. % 2-ring MDI are determined analytically; and an acidic compound is added to the fraction containing at least 5 wt. % 3-ring MDI and multi-ring MDI, and/or the fraction containing at least 95 wt.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: April 17, 2007
    Assignee: Bayer MaterialScience Aktiengesellschaft
    Inventors: Ulrich Liman, Heinz-Herbert Müller, Robert Vieler, Ralf Echterhoff
  • Patent number: 7205356
    Abstract: Catalysts for the accelerated curing of polyisocyanates with polyols, and to polyurethane systems comprising these. The catalysts are used in a two-component coating system based on polyurethanes including (a) polyisocyanates, (b) compounds having groups which are reactive with isocyanates, in water and optionally in the presence of organic solvents or solvent mixtures, (c) one or more compounds of elements of Group VB or Group VIB of the Periodic Table, in which the element in each case has an oxidation state of at least +4, and (d) optionally further additives and auxiliary agents. The coating systems are used in lacquers, paints and adhesives.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: April 17, 2007
    Assignee: Bayer Materialscience AG
    Inventors: Christoph Gürtler, Raul Pires, Heinrich Dornbusch
  • Patent number: 7201964
    Abstract: A transparent sheet having improved optical properties is disclosed. The sheet that features a deviation angle ?? (min) according to DIN 52305-A-AS of ?2.0 and a refracting power D? (min) according to DIN 52305-A-AZ of ?0.05, is prepared by extruding a molding composition comprising linear (co)polycarbonate having weight average molecular weight of 25,000 to 31,000.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: April 10, 2007
    Assignee: Bayer Materialscience AG
    Inventors: Siegfried Anders, Rüdiger Gorny, Peter Schwarz, Claus Rüdiger, Jürgen Röhner
  • Patent number: 7202378
    Abstract: The present invention relates to a process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate, in which 4-(2-nitrophenyl)-n-butyronitrile is converted to 4-(2-nitrophenyl)-n-butyric acid.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: April 10, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Joachim Zechlin, Kai Verkerk, Dietmar Wastian, Katrin Joschek, Tim Loddenkemper, Wilfried Pinke, Michael Schelhaas, Georg Ronge
  • Patent number: 7202384
    Abstract: The present invention relates to a process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate, in which 4-(2-nitrophenyl)-n-butyronitrile is converted to 4-(2-nitrophenyl)-n-butyric acid.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: April 10, 2007
    Assignee: Bayer MaterialScience Aktiengesellschaft
    Inventors: Joachim Zechlin, Kai Verkerk, Dietmar Wastian, Kartin Joschek, Tim Loddenkemper, Wilfried Pinke, Michael Schelhaas, Georg Ronge
  • Patent number: 7199208
    Abstract: A thermoplastic molding composition comprising a linear (co)polyformal is disclosed. The (co)polyformal corresponds to formulae (Ia) or (Ib), in which A independently denotes hydrogen or phenyl, —O-D-O— and —O-E-O— independently denote a diphenolate residue, in which -E- and -D- independently denote an aromatic radical having 6 to 40 C atoms, wherein at least one of —O-D-O— and —O-E-O— denotes 1,1-bis(4-hydroxyphenyl)cyclohexane residue. The composition is characterized in its restricted water absorption. Also disclosed is a process for the preparation of the composition.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: April 3, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann
  • Patent number: 7199178
    Abstract: A process for preparing copolymer dispersions that includes subjecting A) one or more vinyl monomer mixtures containing a) OH-free (meth)acrylic esters and/or vinylaromatics, b) hydroxy-functional vinyl monomers and/or hydroxy-functional (meth)acrylic esters, c) ionic and/or potentially ionic monomers capable of free-radical copolymerization, and d)optionally further monomers, other than the compounds of components a)–c), capable of free-radical copolymerization; to free-radical polymerization in the presence of e) compounds according to formula (I) where R1 is an aliphatic, araliphatic or aromatic radical having 1 to 18 carbon atoms, R2 is H or CH3, R3, R4 are identical or different aliphatc radicals having 1 to 7 carbon atoms and n is 1 to 4; and subsequently dispersing the resultant copolymer B) before or after addition of a neutralizing agent C) in water. The resulting dispersions can be used to coat substrates.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: April 3, 2007
    Inventors: Martin Melchiors, Thomas Münzmay, Thomas Stingl, Hartmut Ottensmann, Heinz-Dietmar Gewiss
  • Patent number: 7199168
    Abstract: The present invention relates to a process for the production of a cellular composite, and to the resultant cellular composites. This process comprising (A) preparing a mixture of a polyisocyanate, water, and, optionally, one or more additives; (B) adding this mixture under low shear mixing to inorganic hollow microspheres; (C) completely filling a mold with the mixture; and (D) heating the mold containing the mixture to a temperature of from 100 to 280° C., thereby forming the composite.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: April 3, 2007
    Assignee: Bayer MaterialScience LLC
    Inventors: Kieth G. Spitler, David D. Steppan, Howard S. Duff
  • Patent number: 7196134
    Abstract: High-solids binder combinations comprising polyisocyanates, special lactone-based polyols and polyacrylate-polyols, a process for preparing such binders, and their use for producing coatings. The lactone-based polyols include ?-caprolactone-based polyols having an average hydroxy functionality ?2 and a number-average molecular weight of from 119 to 2000 g/mol. The polyacrylate resins are prepared by copolymerizing optionally functional polybutadienes, aromatic monomers, hydroxyalkyl esters of acrylic or methacrylic acid having primary hydroxyl groups, aliphatic esters of acrylic or methacrylic acid and C1 to C8 monoalcohols, ?,?-unsaturated C3–C7 monocarboxylic or dicarboxylic acids or of one or more monoesters of maleic acid or fumaric acid and C1 to C14 monoalchols.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: March 27, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Christian Wamprecht, Markus Mechtel, Jörg Tillack, Thomas Klimmasch
  • Patent number: 7193112
    Abstract: The invention describes a process for the production of aromatic amines by the catalytic hydrogenation of aromatic nitro compounds, with the process being characterized by at least one catalytic hydrogenation step and the catalyst consists at least of a monolithic support and a catalytically active coating.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: March 20, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Peter Lehner, Thomas Turek, Matthias Brandt, Susanne Buchholz
  • Patent number: 7186857
    Abstract: The present invention relates to a process for the preparation of di- and polyamines of the diphenylmethane series, and to the preparation of di- and poly-isocyanates of the diphenylmethane series from these di- and poly-amines. The di- and poly-amines of the diphenylmethane series are prepared by the reaction of aniline and formaldehyde in the presence of hydrochloric acid. In with the present invention, the hydrochloric acid employed contains less than 0.001 wt. % of metal ions which are divalent and/or more than divalent.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: March 6, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Heinz-Herbert Müller, Stefan Wershofen, Stefan Grabowski
  • Patent number: 7183352
    Abstract: The present invention relates to novel polyesterpolyols with cyclic imide structure and to their use in coating compositions.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: February 27, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Christian Wamprecht, Hans-Gerd Van Treek, Raul Pires, Ulrich Freudenberg, Robert Reyer
  • Patent number: 7179846
    Abstract: A structural element of closed-cell polyurethane rigid foam, with good thermal insulation and improved sound absorption is achieved by means of surface depressions satisfying specified criteria.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: February 20, 2007
    Assignee: Bayer MaterialScience AG
    Inventor: Thorsten Dreier
  • Patent number: 7179882
    Abstract: The present invention relates to low viscosity polymer polyols and to a process for the preparation of these low viscosity polymer polyols. These polymer polyols comprise the free-radical polymerization product of (A) a base polyol, (B) a pre-formed stabilizer, and (C) at least one ethylenically unsaturated monomer, in the presence of (D) at least one free-radical polymerization initiator, and (E) at least one polymer control agent. The total amount of polymer control agent present in the polymer polyols of the present invention ranges from greater than about 5.0% up to about 20% by weight, based on 100% by weight of the polymer polyol.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: February 20, 2007
    Assignee: Bayer Materialscience LLC
    Inventors: Rick L. Adkins, Scott A. Guelcher, James R. Charron, John E. Hayes
  • Patent number: 7175675
    Abstract: In the method of the present invention a plastic article (e.g., a molded article of thermoplastic polycarbonate) is immersed at least partially in a dye bath which includes one or more dyes, water, at least one carrier, and at least one diol. The dye bath contains: (i) at least one dye (e.g., a static and/or photochromic dye); (ii) water; (iii) at least one carrier represented by the following general formula I, R—O—(CH2)n—OHI wherein R is a radical selected from linear or branched C1–C18 alkyl, benzyl, benzoyl and phenyl, and n is 2 or 3; and (iv) a diol selected from at least one of linear or branched C2–C20 aliphatic diols, poly(C2–C4 alkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols. In an embodiment of the present invention, the carrier is ethyleneglycol butyl ether, and the diol is diethylene glycol.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: February 13, 2007
    Assignee: Bayer MaterialScience LLC
    Inventors: Robert A. Pyles, Rick L. Archey, David M. Derikart
  • Patent number: 7176254
    Abstract: Novel sizing compositions, their preparation and use. The compositions contain water-dispersible and/or water-soluble and alkylamine-blocked polyisocyanates, film-forming resins, coupling agents and lubricants. The isocyanates are synthesized from at least one polyisocyanate, at least one ionic and/or potentially ionic and/or nonionic compound, and at least one blocking agent which is at least 20% by weight aralkylamines.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: February 13, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thorsten Rische, Karin Naujoks, Thomas Feller, Christoph Gürtler, Jan Mazanek
  • Patent number: 7169333
    Abstract: The present invention provides an antistatic agent of the formula (I) R—SO3NR?R?R??R?? ??(I) wherein R represents a perfluorinated cyclic or linear, branched or unbranched carbon chain having 1 to 30 carbon atoms, R? represents a cyclic or linear, branched or unbranched carbon chain having 1 to 30 carbon atoms, which is unsubstituted or substituted with halogen, hydroxy, cycloalkyl or alkyl, and R?, R??, R?? independently represent a cyclic or linear, branched or unbranched carbon chain having 1 to 30 carbon atoms, which is unsubstituted or substituted with halogen, hydroxy, cycloalkyl or alkyl, with the proviso that at least one of the radicals R?, R?, R?? and R?? must not represent ethyl. The antistatic agent of the present invention may be incorporated in plastic molding materials to provide antistatic properties thereto.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: January 30, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Döbler, Walter Köhler, Siegfried Neumann