Patents Represented by Attorney, Agent or Law Firm Lyndanne M. Whalen
  • Rigid foams with improved insulation and physical properties
    Patent number: 5539006
    Abstract: Rigid polyurethane foams are produced by reacting an organic polyisocyanate with a sucrose-based polyether polyol in the presence of a catalyst and a blowing agent selected from hydrogen-containing chlorofluorocarbons, hydrogen-containing fluorocarbons, hydrocarbons and mixtures thereof. These foams are characterized by good demold and insulation properties.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: July 23, 1996
    Assignee: Bayer Corporation
    Inventors: Herman P. Doerge, Edward E. Ball, Steven L. Schilling, Edward P. Squiller
  • Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and 2-methyl butane and the use thereof in the production of foams
    Patent number: 5532283
    Abstract: Azeotropic compositions made up of from about 64 to about 80% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 20 to about 36% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: July 2, 1996
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Eric F. Boonstra, Herman P. Doerge
  • Ether-linked amine-terminated polyesters and a process for their production
    Patent number: 5525683
    Abstract: Ether-linked amine-terminated polyesters are produced by reacting (1) a polyester polyol in which substantially all of the hydroxyl groups have been replaced with good leaving groups with (2) an aminoalcohol and/or aminothiol and (3) a deprotonating agent. The aminopolyesters obtained by this process are characterized by excellent reactivities over a wide range of molecular weights and functionalities.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: June 11, 1996
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Rick L. Adkins, William E. Slack, Rudolf Sundermann
  • Process for the production of diisocyanates
    Patent number: 5516935
    Abstract: Diisocyanates are produced by gas-phase phosgenation of aliphatic diamines having two primary amino groups in the 1,2- or 1,3-position to one another or by cycloaliphatic diamines having two primary amino groups in the 1,2- or 1,3-position to one another.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: May 14, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eric Bischof, Peter Briedenbach, Jurgen Dahmer, Andreas Flink, Attila Molnar, Herbert Stutz
  • Mixed blocked isocyanate prepolymers, a process for their production and their use for the production of flexible epoxy resin systems
    Patent number: 5510432
    Abstract: Isocyanate prepolymers based on an aromatic diisocyanate and a polyether polyol in which at least 95% of the isocyanate groups are blocked by blocking agents selected fromA) about 50 to about 97 equivalent % of a phenol or substituted phenol,B) about 30 to about 50 equivalent % of a pyrazole or a substituted pyrazole andC) 0 to about 10 equivalent % of a blocking agent different from A) and B).These blocked isocyanate prepolymers are particularly useful for the production of flexible epoxy resin systems.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: April 23, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lutz Schmalstieg, Rainer Rettig, Eberhard Konig
  • Ether-linked amine-terminated polyethers and a process for their production
    Patent number: 5510535
    Abstract: Ether-linked amine-terminated polyethers are produced by reacting (1) a polyether polyol in which substantially all of the hydroxyl groups have been replaced with good leaving groups with (2) an aminoalcohol and/or aminothiol and (3) a deprotonating agent. The aminopolyethers obtained by this process are characterized by low viscosities and excellent reactivities over a wide range of molecular weights and functionalities.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: April 23, 1996
    Assignee: Bayer Corporation
    Inventors: Rick L. Adkins, William E. Slack
  • Pest control device
    Patent number: 5502919
    Abstract: A device composed of a housing assembly having a passage or channels which form a passage when the housing assembly is in its closed position. The inner surface of the passage is treated with an appropriate insecticide in powder, dust or slurry form which will adhere to the passage wall surface. The passage of the housing assembly has an outer diameter of at least about 0.6 cm. The passage is dark. In a preferred embodiment, the passageway is arcuate and the passage walls are scored or ridged.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: April 2, 1996
    Assignee: Bayer Corporation
    Inventor: John A. Ciarletta
  • Process for the production of dialkyl pyrimidylphosphates
    Patent number: 5502190
    Abstract: O,O-dialkyl pyrimidylphosphates are made by reacting an O,O-dialkyl phosphorohalothioate with a 5-hydroxypyrimidine in the presence of an imidazole phase transfer catalyst, an aromatic solvent and an alkali metal hydroxide at a pH of from about 8 to about 12 and a temperature of up to about 70.degree. C. The products of this process are obtained in high yield. These compounds are useful as pesticides and insecticides.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: March 26, 1996
    Assignee: Bayer Corporation
    Inventors: Daniel M. Wasleski, David T. Erdman, Peter E. Newallis
  • Bloom-free thermoplastic polyurethane compositions
    Patent number: 5491211
    Abstract: Blooming in certain thermoplastic polyurethane products is substantially or completely eliminated by including a chain terminator. More specifically, at least one hydroxy functional polyester polyol having a molecular weight of at least 500 and a hydroxyl functionality of at least 2, a chain extender and an organic diisocyanate are combined with a chain terminator. The chain terminator which is preferably a monofunctional compound that is reactive with an isocyanate. These reactants are used in amounts such that the of NCO/H index of the formulation is at or near 100.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: February 13, 1996
    Assignee: Bayer Corporation
    Inventors: James N. Rieck, Joseph M. Jupa
  • Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and N-pentane and the use thereof in the production of foams
    Patent number: 5488073
    Abstract: An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: January 30, 1996
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Process for preparing polyamines for lighter color polyisocyanate based foam
    Patent number: 5484819
    Abstract: The present invention encompasses an improved process for preparing polymethylene polyphenyl polyisocyanate comprising reacting phosgene with polymethylene polyphenyl polyamine, the improvement wherein the polymethylene polyphenyl polyamine is acidified prior to phosgenation.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: January 16, 1996
    Assignee: Bayer Corporation
    Inventors: Jeffrey S. Bolton, Ramon Kalyanaraman, Steven L. Schilling, Clarence D. Blue
  • Compounds containing tertiary amino groups, a process for their production and their use as catalysts
    Patent number: 5482979
    Abstract: Compounds containing ester groups and tertiary amino groups and optionally hydroxyl groups are made by reacting optionally hydroxyfunctional acetoacetic acid esters of monofunctional or polyfunctional alcohols (particularly polyfunctional polyether polyols) with primary/tertiary polyamines (particularly diamines). These compounds are useful as optionally incorporable catalysts for the isocyanate addition reaction in the production of polyurethane foams by the isocyanate polyaddition process.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: January 9, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Josef Sanders, Ulrich Liman, Klaus Konig
  • Process for conditioning and stabilizing polyols
    Patent number: 5476892
    Abstract: Polyols are conditioned and stabilized by mixing them at 0 to 150.degree. C. with from about 0.0001 to about 1% by weight, based on the quantity of polyol, of a silylated acid corresponding to the formula:X--[Si(CH.sub.3).sub.3 ].sub.nin whichX represents a neutral acid residue obtained by removal of the acidic hydrogen atoms from an n-basic acid having a maximum pKa value of 3, provided that the n-basic acid is not a hydrohalic acid andn represents an integer of from 1 to 3.The resultant polyol is characterized by good color and activity properties. The stabilized polyols are particularly useful in the production of polyurethanes, particularly polyurethane foams.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: December 19, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans J. Scholl, Hartmut Nefzger, Helmut Reiff, Bernd Quiring
  • Aezotropic compositions of 1,1,1,4,4,4-hexafluorobutane and n-pentane and the use thereof in the production of foams
    Patent number: 5472989
    Abstract: An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: December 5, 1995
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Process for the production of S,S,S-tributylphosphorotrithioate
    Patent number: 5466852
    Abstract: S,S,S-tributylphosphorotrithioite is oxidized with a perborate or percarbonate at a pH of from about 6 to about 12 and at a temperature of from about 40.degree. to about 65.degree. C. Sodium perborate is a particularly preferred oxidizing agent. The product S,S,S-tributylphosphorotrithioate may be recovered by simple phase separation.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: November 14, 1995
    Assignee: Bayer Corporation
    Inventors: Vidyanatha A. Prasad, Peter E. Newallis
  • Foam-forming mixtures with decreased decomposition of hydrohalocarbon blowing agents
    Patent number: 5464560
    Abstract: An organic acid having at least two carboxylic acid groups, no tertiary amino groups and a pK.sub.a of up to 3.1 is added to an HCFC blowing agent or to a composition, preferably an isocyanate-reactive composition, in which an HCFC blowing agent is present to reduce decomposition of the HCFC blowing agent. The resultant compositions are useful in the production of polyisocyanurate, polyurethane and/or polyurea foams.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: November 7, 1995
    Assignee: Bayer Corporation
    Inventors: Steven L. Schilling, Robert P. Yeater, Phil M. Soland, John F. Szabat, Harold R. Parsons
  • Rigid foams with improved insulation and physical properties
    Patent number: 5461084
    Abstract: Rigid polyurethane foams are produced by reacting an organic polyisocyanate with an amine-based polyether polyol in the presence of a catalyst, a hydrogen-containing fluorocarbon and a minor amount of water. These foams are characterized by K-factors which are about 0.135 BTU-in./hr.ft..sup.2 .degree.F. or less.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: October 24, 1995
    Assignee: Bayer Corporation
    Inventor: Herman P. Doerge
  • Core discoloration preventing agents in the production of isocyanate-based foams
    Patent number: 5459171
    Abstract: Compounds of the general formula ##STR1## in which n represents an integer from 2 to 6, preferably 2 or 3,m represents an integer from 1 to 6, preferably 1 to 3,R represents --C(CH.sub.3).sub.3 andX represents hydrogen or the group ##STR2## are used as core discoloration preventing agents in a process for the production of isocyanate-based foams.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: October 17, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Haas, Sven Meyer-Ahrens, Gundolf Jacobs
  • Process for the production of molded parts and fillings made of rigid and flexible polyurethane foams using differential activator concentrations
    Patent number: 5454994
    Abstract: Molded parts and fillings of rigid and flexible polyurethane foams and rigid polyurethane foams with isocyanurate structures are made from a polyol and isocyanate in the presence of an activator, water, a blowing agent and optionally other additives. Imperfections in the foam are avoided by raising the amount of activator with time during the production of the reaction mixture in such a way that the friability time occurs simultaneously throughout the contents of the mold.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: October 3, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventor: Christoph Vogel
  • Process for the production of 1-amino-1-methyl-3(4)-cyanocyclohexane
    Patent number: 5449811
    Abstract: A new process for the production of 1-amino-1-methyl-3(4)-cyanocyclohexane (AMCC), an intermediate for the manufacture of 1-isocyanato-1-methyl-3(4)-isocyanatomethylcyclohexane. In this process, 4(5)-cyano-1-methylcyclohexene is reacted with excess hydrogen cyanide in the presence of aqueous sulfuric acid to form 1-formamido-1-methyl-3(4)-cyanocyclohexane which is then selectively hydrolyzed in an acidic medium to form AMCC.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: September 12, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventor: Dieter Arlt