Patents Represented by Attorney Joseph C. Gil

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  • Process for the production of (poly)isocyanates in the gas phase
    Patent number: 7019164
    Abstract: The present invention relates to a process for the production of an isocyanate corresponding to the formula R(NCO)n wherein R represents a (cyclo)aliphatic or aromatic hydrocarbon residue having up to 15 carbon atoms, preferably 4 to 13 carbon atoms, provided that there are at least 2 carbon atoms arranged between each of the nitrogens and n represents the number 2 or 3, by a) separately heating an amine corresponding to the formula R(NH2)n, wherein R and n are as previously defined, in vapor form, optionally diluted with an inert gas or the vapors of an inert solvent, and phosgene to temperatures of 200° C. to 600° C.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: March 28, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Friedrich, Herbert Stutz
  • Flameproof polycarbonate blends
    Patent number: 7019057
    Abstract: A flame retardant, thermoplastic molding composition is disclosed. The composition contains A) at least one of aromatic polycarbonate and polyester carbonate, B) polyalkyl (alkyl)acrylate, C) a graft polymer the molecular structure of which is substantially free of units derived from styrene, butadiene and acrylonitrile, D) at least one organic phosphoric acid ester, E) an optional anti-drip agent, and F) optionally at least one polymer additive. The composition is characterized in its good property profile especially weld line strength, resistance to chemicals, elongation at break, thermal stability and melt flowability.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: March 28, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Thomas Eckel
  • Process of preparing delayed-dissolution cellulose ethers
    Patent number: 7012139
    Abstract: A process for preparing cellulose ethers having delayed dissolution in water is described. The process comprises: (a) treating a moist cellulose ether with a solution comprising a dialdehyde; (b) adding an aqueous salt solution to the moist cellulose ether, such that said cellulose ether has a pH of from 6.0 to 8.0, the aqueous salt addition being performed at least one of, (i) prior to step (a), (ii) concurrently with step (a), and (iii) subsequent to step (a); and (c) drying and comminuting the treated cellulose ether of step (b). The cellulose ether, or mixtures of cellulose ethers, prepared by the method of the present invention may be used as protective colloids, thickeners and adhesives.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: March 14, 2006
    Assignee: Wolff Cellulosics GmbH & Co. KF
    Inventors: Hartwig Schlesiger, Wolfgang Dannhorn, Jörn-Bernd Pannek, Volkhardt Müller, Frank Höhl
  • Dispersion nozzle with variable throughput
    Patent number: 7007711
    Abstract: The invention relates to a dispersing device wherein the dispersed material has a variable throughput comprising a jet disperser which comprises at least one inlet for the materials to be dispersed, a chamber with a multiciplicity of openings arranged in rows along the chamber wall, which lead into an outlet chamber, and an outlet for the finally dispersed material, wherein the chamber comprises a displaceably mounted piston which, depending on its position within the chamber, partially or completely shuts off a specific number of the openings for the passage of the flow os dispersed material.
    Type: Grant
    Filed: July 4, 2000
    Date of Patent: March 7, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd Klinksiek, Dieter Schleenstein, Wieland Hovestadt, Michael vom Felde
  • Double metal cyanide catalysts for producing polyether polyols
    Patent number: 7008900
    Abstract: The invention provides new double metal cyanide (DMC) catalysts for preparing polyetherpolyols by the polyaddition of alkylene oxides to starter compounds which contain active hydrogen atoms, wherein the catalyst comprises a) double metal cyanide compounds, b) bile acids or their salts, esters or amides and c) organic complex ligands. The catalysts according to the invention show greatly increased activity during preparation of a polyetherpolyol.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: March 7, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jörg Hofmann, Pieter Ooms, Pramod Gupta, Walter Schäfer, John Lohrenz
  • Method of forming polythiophene dispersions
    Patent number: 7008562
    Abstract: A process for the preparation of dispersions or solutions comprising polythiophene+An? ion complexes in anhydrous or low-water-content organic solvents, characterized in that at least one water-miscible organic solvent or a water-miscible solvent mixture is added to an aqueous dispersion or solution comprising optionally substituted polythiophenes, all or some of the water is removed, and the resultant dispersion or solution is, if desired, diluted with organic solvents.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: March 7, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Friedrich Jonas, Stephan Kirchmeyer
  • Flame-retarded poly(ester)carbonates
    Patent number: 7005471
    Abstract: A thermoplastic molding composition comprising poly(ester)carbonate is disclosed. The composition that is characterized by its flame resistance contains a PTFE blend in an amount of 0.2 to 0.6% and an organic salt of an alkali metal or alkaline earth metal in an amount of 0.01 to 0.1%. The PTFE blend contains a blending partner and PTFE wherein amount of PTFE is 30 to 70% relative to the weight of the PTFE blend.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: February 28, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Horn, Hans Franssen
  • Single reactor synthesis of KOH-capped polyols based on DMC-synthesized intermediates
    Patent number: 7005552
    Abstract: The present invention relates to processes for preparing ethylene oxide (EO)-capped polyols in which removal of catalyst residues or salts formed by the neutralization of the basic catalyst is not required prior to discharging the polyol from the reactor because neutralization occurs during or after the starter charge of a subsequent batch. The inventive processes allow for the preparation of DMC-catalyzed intermediates and their base-catalyzed EO caps within the same reactor. Polyols produced by the processes of the invention have a high content of primary hydroxyl groups and may be useful for producing polyurethane foams, elastomers, sealants, coatings, adhesives and the like.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: February 28, 2006
    Assignee: Bayer Materialscience LLC
    Inventor: Bryan D. Kaushiva
  • Aqueous 2K PUR systems
    Patent number: 7005470
    Abstract: The invention relates to aqueous two-component polyurethane systems comprising vinyl polymer polyol dispersions modified with reactive diluents, to a process for preparing them and to use as coating materials.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: February 28, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Probst, Martin Melchiors, Gerhard Ruttmann, Thomas Stingl, Hartmut Ottensmann
  • Mineral-reinforced impact-resistant modified polycarbonate blends
    Patent number: 7001944
    Abstract: A mineral-filled, impact-resistant thermoplastic molding composition is disclosed. The composition contains at least one resin selected from the group consisting of polycarbonate and polyester carbonate B) impact resistance modifier, and C) wollastonite having carbon content greater than 0.1% relative to the weight of the wollastonite as determined by elemental analysis. Exhibiting high modulus of elasticity and a good toughness, in particular also at low temperatures, the composition is suitable for car body external applications.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: February 21, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Marc Vathauer, Andreas Seidel, Detlev Joachimi, Dieter Wittmann
  • Polyamines comprising urea groups, method for their production, and their use as hardeners for epoxide resins
    Patent number: 7001972
    Abstract: The present invention provides polyamines which contain urea groups, a process for the preparation thereof and their use to produce adhesives, sealants, embedding compounds, moulded items or coatings.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: February 21, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jörg Tillack, Lutz Schmalstieg, Wolfgang Puetz, Gerhard Ruttmann
  • Process for suppressing the foaming of an aqueous system
    Patent number: 7001634
    Abstract: The present invention relates to a process for suppressing the foaming of an aqueous system which involves combining water and at least one defoamer composition which has a hydroxyl equivalent molecular weight of at least 4000 Da and a cloud point less than or equal to 30° C. in 1% aqueous solution. The high hydroxyl equivalent molecular weight defoamers of the present invention exhibit excellent defoaming properties at a low cloud point. Additionally, defoamers of the present invention exhibit defoaming properties which are better than those of defoamers having the same cloud point which are based on polyoxyalkylene copolymers prepared in the presence of potassium hydroxide. The superior defoaming properties of the defoamers of the present invention are particularly useful in the manufacture or processing of food items.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: February 21, 2006
    Assignee: Bayer Materialscience LLC
    Inventor: Edward P. Browne
  • Polyether urethanes containing one reactive silane group and their use in moisture-curable polyether urethanes
    Patent number: 6998459
    Abstract: The present invention relates to a polyether urethane containing one reactive silane group and one or more polyether segments having a number average molecular weight of 1000 to 15,000, wherein the reactive silane groups are incorporated by the reaction of an isocyanate group with a compound corresponding to the formula wherein X represents identical or different organic groups which are inert to isocyanate groups below 100° C., provided that at least two of these groups are alkoxy or acyloxy groups, Y represents a linear or branched alkylene group containing 1 to 8 carbon atoms and R1 represents an organic group which is inert to isocyanate groups at a temperature of 100° C. or less.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: February 14, 2006
    Assignee: Bayer MaterialScience LLC
    Inventors: Richard R. Roesler, Derek L. Crawford, Kurt C. Frisch, Dinesh Pethiyagoda, Karsten Danielmeier
  • Flame retardant, thermoplastic polycarbonate molding compositions
    Patent number: 6995212
    Abstract: A flame-retardant thermoplastic molding composition is disclosed. The composition contains aromatic polycarbonate resin and sufficient amounts of poly(tetrafluoroethylene) and sulfo-modified polyester, that are effective to impart to the composition flame resistance that in accordance with UL-94 standard is rated V-0 at 1/16? thick specimens.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: February 7, 2006
    Assignee: Bayer MaterialScience LLC
    Inventors: James Y. J. Chung, Winfried G. Paul
  • Process for tinting plastic articles
    Patent number: 6994735
    Abstract: A process for tinting a molded article is disclosed. The process entails applying by spraying or by flow coating a hot, dye-solution onto at least a portion of the surface of a molded article to obtain a tinted article and washing the tinted article. In addition to the dissolved dye, the dye solution that is substantially free of particulate matter contains an aqueous solution of a carrier and an optional emulsifier. The article is one molded of a thermoplastic molding composition. In an embodiment of the invention, the dye solution is prepared by filtering a hot aqueous solution through a bag filter that contains a dye to obtain a hot, dye-solution. In a further embodiment, activated carbon is used to purify the dye solution to obtain a dye-free aqueous solution.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: February 7, 2006
    Assignee: Bayer Materialscience LLC
    Inventors: Robert A. Pyles, David M. Derikart, Rick L. Archey, Michael Nikolakopoulos
  • Catalysts which are based on organic-inorganic hybrid materials containing noble metals and titanium and which are used for selectively oxidizing hydrocarbons
    Patent number: 6995113
    Abstract: The present invention relates to noble metal-containing catalysts which are composed of at least one organic/inorganic hybrid material which is composed of at least one titanium component and at least one Si—H group. The catalysts of the present invention have increased activity compared to known catalysts.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: February 7, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Markus Weisbeck, Gerhard Wegener, Georg Wiessmeier, Peter Vogtel
  • Capacitor powder
    Patent number: 6992881
    Abstract: Disclosed herein are capacitors having an anode based on niobium and a barrier layer based on niobium pentoxide, at least the barrier layer having a content of vanadium and process for their preparation and use.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: January 31, 2006
    Assignee: H. C. Starck GmbH
    Inventors: Karlheinz Reichert, Christoph Schnitter
  • Process for the production of 1,5-dinitronaphthalene
    Patent number: 6992230
    Abstract: The invention is directed to a process for the production of 1,5-dinitronaphthalene wherein naphthalene is nitrated by nitric acid in the absence of sulfuric acid at temperatures of from 30 to 80° C., wherein the nitric acid has a concentration of from 72 to 87 wt.-%, the reaction mixture obtained is filtered at temperatures of from 5 to 20° C. and the solid precipitate obtained is washed with water, and 1,5-dinitronaphthalene is isolated from the washed precipitate by washing with acetone.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: January 31, 2006
    Assignee: Bayer MaterialScience AG
    Inventors: Hans-Peter Schal, Vera Yakovlevna Popkova, Boris Mikhaylovitch Laskin, Alexander Sergeevitch Malin, Sofia Borisovna Volkova
  • Polymeric allophanates of diphenylmethane diisocyanate, perpolymers of these polymeric allophanates, and processes for the preparation of the polymeric allophanates and the prepolymers thereof
    Patent number: 6991746
    Abstract: The present invention relates to a new high functionality MDI. In particular, this invention relates to polymeric allophanates based on diphenylmethane diisocyanate having an NCO group content of 12 to 30%, prepolymers thereof, and processes for the production of these compositions. The prepolymers are stable liquids having NCO group contents of about 10 to about 28%.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: January 31, 2006
    Assignee: Bayer MaterialScience LLC
    Inventors: William E. Slack, Hersel T. Kemp, II, William E. Miller
  • Process for the preparation of quaternary salt phenolate solutions
    Patent number: 6992222
    Abstract: The preparation of quaternary salt phenolate solutions is disclosed. The preparation entails mixing an aqueous hydroxide-containing solution with an organic phase that contains phenol and quaternary salt, distilling off the water and precipitating and filtering off the resulting salt.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: January 31, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Claus-Peter Reisinger, Sven Michael Hansen, Peter Fischer