Patents Represented by Attorney, Agent or Law Firm Lyndanne M. Whalen
  • Procedure for the controlled production or modification of polymeric products by means of IR-ATR spectroscopy
    Patent number: 6522408
    Abstract: This invention relates to a procedure for the controlled production or for the modification of polymeric products using IR-ATR spectroscopy, wherein the case of a polymerization reaction the extinction is determined of the characteristic IR absorption bands for the monomer used and the resulting polymeric product or in the case of a polymer modification the characteristic IR absorption bands of the starting material used and of the modified polymeric product are determined, the degree of conversion or the degree of modification is calculated from the absorption bands, and when the desired degree of conversion or the desired degree of modification is reached the reaction is stopped by suitable measures.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: February 18, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Brück, Udo Wolf
  • Process for preparing rigid foamed materials containing urethane groups
    Patent number: 6509387
    Abstract: The description relates to production of rigid foamed plastics containing urethane groups, by use of a blowing-agent mixture containing 5 to 50 parts by weight of C3 and/or C4 alkanes and 50 to 95 parts by weight of cyclopentane. There is also a description of use of the thus-produced rigid foamed plastics as composite components or for foam filling of cavities in refrigerator construction.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: January 21, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Werner Dietrich, Norbert Eisen, Gerhard Heilig
  • Integrated method for producing epoxides from olefins
    Patent number: 6504040
    Abstract: The invention relates to an integrated process for the preparation of epoxidised olefins. In the first stage, dilute hydrogen peroxide solutions are prepared from the elements hydrogen and oxygen and are reacted in a subsequent liquid-phase epoxidation with olefin in the presence of titanium silicalite to form epoxidised olefins, and the solvents are returned to the H2O2 process again.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: January 7, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Vogtel, Ernst-Ulrich Dorf, Gerhard Wegener, Markus Weisbeck
  • Process for the preparation of durene diisocyanate
    Patent number: 6486346
    Abstract: Durene diisocyanate is prepared by reacting durene with nitric acid in sulfuric acid, catalytic hydrogenation of the dinitrodurene that is formed, and phosgenation of the resultant durene diamine in a conventional manner. The intermediate products dinitrodurene and durene diamine do not have to be worked up in a complicated manner as solid products, but can be worked up in dissolved form. The intermediate products dinitrodurene and durene diamine do not have to be isolated and purified in a complicated manner. but can be processed directly after preparation. Another advantage of this process is that only a single organic solvent need be used for the overall preparation process. Separation and re-use of spent acid in the conversion of durene with nitric acid also renders the process of the present invention significantly less environmentally harmful than the known processes of the prior art.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: November 26, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Heitkämper, Klaus Jost, Stefan Penninger
  • Method for preparing polyether polyols
    Patent number: 6486361
    Abstract: The invention relates to a process for the preparation of polyether polyols by means of double metal cyanide (DMC) catalysts, in which the induction phase is shortened markedly. By continuous dispensing of an alkylene oxide into the starter-catalyst mixture it is possible to achieve a substantial shortening of the induction phase by comparison with the batch-wise activation.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: November 26, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stephan Ehlers, Jörg Hofmann, Manfred Dietrich, Pramod Gupta, Christian Steinlein, Horst Zwick
  • Compressed, rigid polyurethane foams
    Patent number: 6472449
    Abstract: Compressed polyurethane or polyisocyanurate foams useful as support materials for vacuum insulation units are produced by compressing an open-cell rigid polyurethane or polyisocyanurate to 5-95% of its original volume after 80-200% of the fiber time.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: October 29, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Torsten Heinemann, Karl-Werner Dietrich, Walter Klän
  • Process for preparing polyether polyols
    Patent number: 6469218
    Abstract: The invention is directed to a process for preparing a polyether polyol by the polyaddition of an alkylene oxide on to a starter compound containing active hydrogen atoms under basic catalysis in the presence of phosphonium cations.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: October 22, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ornulf Rexin, Rolf Mülhaupt
  • Open-cell rigid polyurethane foams
    Patent number: 6444720
    Abstract: Open-cell rigid foams containing urethane and/or isocyanurate and/or urea groups are produced with a long-chain polyether polyol having low double bond content.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: September 3, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bert Klesczewski, Jörg Hofmann, Pramod Gupta
  • Stable isocyanate formulations
    Patent number: 6433218
    Abstract: The pot life of an isocyanate formulation is controlled by including a chain extender having (a) at least two secondary amine groups, (b) no primary amine groups, and (c) a reactivity low enough that the chain extender will not react sufficiently with isocyanate groups present in the isocyanate formulation to increase the viscosity of the isocyanate formulation to more than 2000 mPa·s within 5 seconds in the isocyanate formulation.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: August 13, 2002
    Assignee: Bayer Corporation
    Inventors: Rick L. Adkins, William E. Slack, Edward P. Squiller
  • Substituted phenyl uracils
    Patent number: 6432879
    Abstract: The invention relates to novel substituted phenyluracils of the general formula (I) in which the radicals n, Q, R1 to R6 are each as defined in the description, and to processes for this preparation and to their use as herbicides.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: August 13, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Andree, Mark Wilhelm Drewes, Markus Dollinger, Ingo Wetcholowsky, Randy Allen Myers
  • Co-initiated polyols useful for the production of rigid polyurethane foams
    Patent number: 6423759
    Abstract: A co-initiated polyether polyol is produced by suspending a solid polyhydroxyl compound in an amine-initiated polyol, heating the suspension and alkoxylating the heated suspension. These co-initiated polyether polyols are particularly useful for the production of polyurethanes.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: July 23, 2002
    Assignee: Bayer Corporation
    Inventors: Steven L. Schilling, Herman P. Doerge, Edward E. Ball, Keith J. Headley
  • Plasticizers for bowling ball coverstocks
    Patent number: 6407201
    Abstract: The present invention provides a plasticizer compound having the general formula: in which n=1 to 3, R represents a C2-C8 straight or branched aliphatic hydrocarbon chain or C6-C10 aromatic or cycloaliphatic group, and R′ and R″ are each independently a branched oxyalkylene chain represented by the chemical formula C8H16O and by the chemical structures: The present invention is also directed to a coverstock formulation comprising the above-plasticizer compound.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: June 18, 2002
    Assignee: Bayer Corporation
    Inventors: Ronald P. Taylor, Jeffrey A. Dodge, Hartmut Nefzger
  • Process for purifying organic isocyanates, the organic isocyanates so purified and their use
    Patent number: 6395925
    Abstract: The invention provides a new process for purifying organic isocyanates or isocyanate mixtures by mixing the isocyanates or isocyanate mixtures to be purified with at least one alcohol and/or thiol or a mixture of alcohols and/or thiols, heating the resultant mixture and simultaneously or subsequently degassing the mixture and/or working up the mixture by distillation and/or extraction.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: May 28, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Dieter Mager, Reinhard Halpaap
  • Low density microcellular elastomers based on isocyanate-terminated prepolymers
    Patent number: 6395798
    Abstract: Low density microcellular polyurethane foams suitable for athletic shoe midsoles and other applications are prepared by diol chain extension of 12 to 16% free NCO isocyanate-terminated prepolymers prepared by reacting an excess of di- or polyisocyanate with one or more high molecular weight, high functionality polyoxypropylene diols preferably employing water as a reactive blowing agent. The microcellular elastomers exhibit increased hardness despite the higher molecular weight of the polyoxypropylene diol and further exhibit greater tear resistance, lower compression set, and markedly lower shrinkage.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: May 28, 2002
    Assignee: Bayer Antwerp, N.V.
    Inventor: Usama E. Younes
  • Raney nickel catalysts, a method for producing said raney nickel catalysts and the use of the same for hydrogenating organic compounds
    Patent number: 6395934
    Abstract: Raney nickel catalysts obtainable by a process in which the melt of an alloy comprising 50 to 94 wt. % aluminum, 10 to 50 wt. % nickel, 0 to 20 wt. % iron, 0 to 15 wt. % cerium, cerium mixed metal, vanadium, niobium, tantalum, chromium, molybdenum or manganese and, optionally, further glass-forming elements is allowed to solidify rapidly with a cooling rate of >104 K/s and the rapidly solidified alloy is then subjected to a treatment with organic or inorganic bases are described. A process for the preparation of the Raney nickel catalysts mentioned and their use in the hydrogenation of organic compounds, in particular aromatic nitro compounds, are furthermore described.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: May 28, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Wegener, Eckart Waldau, Bernd Pennemann, Bodo Temme, Hans Warlimont, Uta Kühn
  • Method for reducing the chlorine content of low molecular weight isocyanates
    Patent number: 6391161
    Abstract: An organic isocyanate or mixture of isocyanates is treated with at least one high molecular weight ester of phosphoric acid corresponding to a specified formula to remove chlorine compounds. The isocyanates which are purified in this manner are useful for the production of coatings, polyurethane moldings and chemical intermediates.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: May 21, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Dieter Mager, Reinhard Halpaap, Martin Brahm, Eric Hoffman
  • Viscoelastic polyurethane foams
    Patent number: 6391935
    Abstract: Viscoelastic foams and a process for making them are disclosed. The foams are produced with a unique isocyanate-reactive mixture that includes a low equivalent weight polyol and from about 15 to about 70 wt. % of a polyester or polyoxyalkylene monol having a number average equivalent weight greater than about 1000. The monol is the key to formulating excellent viscoelastic foams over a broad range of processing conditions and isocyanate indices. A “reactive” monol gives TDI-based viscoelastic foams with improved “hand feel” and reduced levels of residual toluenediamines.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: May 21, 2002
    Assignee: Bayer Antwerp, N.V.
    Inventors: Stanley L. Hager, Veril C. Jividen, Sebastien P. Triouleyre, Faouzi Joulak
  • Pressure resistant and heat-stable insulating coatings for hollow bodies, and a method for producing the same
    Patent number: 6387447
    Abstract: A process for the production of insulating coatings containing polyurethane groups and/or polyisocyanurate groups for hollow bodies by reaction of a) a polyisocyanate component with b) compounds which contain at least two hydrogen atoms which are active towards isocyanates and c) catalysts, optionally in the presence of d) further auxiliary substances and additives, characterised in that organic or mineral hollow microbeads having an average particle size in the range from 5 to 200 &mgr;m and a density in the range from 0.1 to 0.8 g/cm3 are added to at least one of components a) to d), is described. The use of these insulating coatings for pipes employed in the offshore sector is furthermore described.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: May 14, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Grimm, Udo Post, Elke von Seggern, Denis Bouvier
  • Azeotropic compositions of perfluorohexane and hydrocarbons having 5 carbon atoms and the use thereof in the production of foams
    Patent number: 6372705
    Abstract: Azeotropic compositions made up of (a) from about 26 to about 72% by weight perfluorohexane and (b) one compound selected from (1) about 36 to about 74% by weight 2-methyl butane or (2) about 28 to about 53% by weight n-pentane in which the sum of the weight percent (a) and weight percent (b) is 100 percent may be used as blowing agents in the production of polyurethane/polyurea foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: April 16, 2002
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Process for opening a container with a push and twist cap and apparatus useful therefor
    Patent number: 6363816
    Abstract: Closed containers with safety caps having a push and twist opening system are opened by compressing the container between the cap gripping means and the base of the apparatus described more fully herein, rotating the base in a clockwise direction, discontinuing contact of the cap gripping means with the safety cap, and lifting the safety cap from the vessel portion of the container.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: April 2, 2002
    Inventors: Thomas P. Corcoran, Gregory J. Musso, Nicholas W. Fiore, Kunal K. Chawla