Patents Represented by Attorney, Agent or Law Firm Fernando A. Borrego
  • Patent number: 6613714
    Abstract: In multimetal cyanide complexes, more than 30% by weight of the primary particles have a platelet-like habit, i.e. the length and width of the primary particles is at least three times the thickness of the particles.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: September 2, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Kathrin Harre, Jörg Erbes, Reinhard Lorenz, Stephan Bauer, Thomas Ostrowski, Eva Baum, Dieter Junge
  • Patent number: 6593268
    Abstract: Improved methods for synthesizing double metal cyanide (DMC) catalysts are disclosed. These methods combine an aqueous solution of a first metal salt, such as ZnCl2, with an aqueous solution of a second metal salt, such as CoCl2, and with an aqueous solution of an alkali metal cyanide, such as KCN, in different manners to synthesize DMC catalysts, such as Zn3[Co(CN)6]2.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: July 15, 2003
    Assignee: BASF Corporation
    Inventors: Edward Michael Dexheimer, Georg Heinrich Grosch
  • Patent number: 6586485
    Abstract: In a process for producing flexible polyurethane foams by the reaction known per se of polyisocyanates with compounds containing at least two hydrogen atoms which react with isocyanate, the reaction is carried out in the presence of cyclic or heterocyclic compounds containing at least one reactive hydrogen atom.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: July 1, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Bruchmann, Heinz-Dieter Lutter
  • Patent number: 6586486
    Abstract: Low-density hydrophilic flexible polyurethane foams are prepared by reacting organic and/or modified organic polyisocyanates (a) with a polyetherol mixture (b) and, if required, further compounds (c) having hydrogen atoms reactive toward isocyanates, in the presence of water and/or other blowing agents (d), catalysts (e) and, if required, further assistants and additives (f), by a process in which the polyetherol mixture (b) consists of b1) at least one difunctional or polyfunctional polyetherol based on propylene oxide and/or butylene oxide and ethylene oxide, having an ethylene oxide content of more than 40% by weight, based on the total amount of alkylene oxide used, an OH number of from 20 to 120 mg KOH/g and a proportion of primary OH groups of more than 20% and b2) at least one difunctional or polyfunctional polyetherol based on propylene oxide and/or butylene oxide and, if required, ethylene oxide, the ethylene oxide content being not more than 40% by weight, and having an OH number of more than 25 m
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: July 1, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Falke, Heinz-Dieter Lutter, Michael J. Pcolinski
  • Patent number: 6583192
    Abstract: Flexible polyurethane foams are prepared by reacting organic and/or modified organic polyisocyanates (a) with a polyetherol mixture (b) and, if required, further compounds (c) having hydrogen atoms reactive toward isocyanates, in the presence of water and/or other blowing agents (d), catalysts (e) and, if required, further assistants and additives (f), by a process in which the polyetherol mixture (b) consists of b1) at least one polyetherol which is at least difunctional, has an OH number of from 20 to 100 mg KOH/g and is based on propylene oxide and/or butylene oxide and ethylene oxide, having an ethylene oxide content of more than 40% by weight, based on the total amount of alkylene oxide used, and, if required, further polyetherols which are at least difunctional, are based on propylene oxide and/or butylene oxide and ethylene oxide and have an OH number of from 20 to 160 mg KOH/g and b2) at least one difunctional to hexafunctional polyetherol based on propylene oxide and/or butylene oxide and having an
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: June 24, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Falke, Heinz-Jürgen Schröder, Lothar Baum
  • Patent number: 6576788
    Abstract: In a process for preparing mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced content of chlorinated by-products and a reduced iodine color number by two-stage reaction of the corresponding mixtures of diphenylmethanediamines and polyphenylpolymethylenepolyamines with phosgene in the presence of at least one inert organic solvent at elevated temperature, separation of the excess phosgene and solvent after the phosgenation is complete and thermal treatment of the reaction product, the mass ratios of phosgene to hydrogen chloride in the residence time apparatus of the second stage of the phosgenation are at the same time 10-30:1 in the liquid phase and 1-10:1 in the gas phase.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: June 10, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Penzel, Volker Scharr, Dieter Starosta, Hilmar Boesel, Eckhard Ströfer, Joachim Pfeffinger, Frank Poplow, Jürgen Dosch, Hans Volkmar Schwarz, Fritz Näumann, Peter van den Abeel, Jan Jacobs, Filip Nevejans, Willy van Pee
  • Patent number: 6563007
    Abstract: Polyetherols based on solid initiator substances and liquid, hydroxyl-containing coinitiators are prepared by a catalyzed addition reaction of alkylene oxides by a process in which the initiator combination contains diols carrying ethoxy structures, the ratio of the average number of hydroxyl groups per mole of initiator combination to the number of ethoxy structures in the polyetherol being from 1:0.2 to 1:1.8 and the ratio of the amounts by weight of the diols carrying ethoxy structures to the average molecular weight of the polyetherol being from 1:2 to 1:15. The polyetherols prepared by this process are used for the preparation of PUR, in particular, rigid PUR foams.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: May 13, 2003
    Assignee: BASF Atiengesellschaft
    Inventors: Stefan Dinsch, Jürgen Winkler, Gottfried Knorr, Michael Reichelt, Gerd Höppner, Peter von Malotki
  • Patent number: 6559229
    Abstract: The blends comprise (a) thermoplastic polyurethane having a Shore hardness of from 60 A to 50 D and (b) ethylene-propylene (EPM) rubbers and/or modified ethylene-propylene (EPM) rubbers, where the weight ratio of (a):(b) is from 3:1 to 999:1.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: May 6, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Ines Brüning, Andreas Chlosta, Günter Scholz
  • Patent number: 6548714
    Abstract: A process for preparing polyetherols by ring-opening polymerization of alkylene oxides onto H-functional initiator molecules comprises at least one process step a) in which a compound of the formula (I) M′aM″b(OH)cOd* Ae*Lf  (I), is applied to a solid inert support or incorporated in the latter or molded to form a shaped body is used as catalyst, and at least one process step b) in which a multimetal cyanide compound of the formula (II) M1a[M2(CN)b(A)c]d·fM1gXn·h(H20) eL  (II) is applied to a solid, inert support or incorporated in the latter or molded to form a shaped body or in powder or paste form is used as catalyst.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: April 15, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Harald Larbig, Reinhard Lorenz, Dieter Junge, Kathrin Harre
  • Patent number: 6538075
    Abstract: The invention relates to thermoplastic polyurethane with a Shore hardness of 45A to 80A, a tensile strength, according to DIN 53504, higher than 5 Mpa, a tear strength, according to DIN 53515 higher than 30 N/mm and an abrasion according to DIN 53516 of less than 250 mm3.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: March 25, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruediger Krech, Juergen Mueller, Norbert Pohlmann, Paul Sellig, Rolf Steinberger
  • Patent number: 6534556
    Abstract: A formulated resin composition for producing a closed cell rigid polyisocyanate based foam is disclosed. The formulated resin composition for use in a polyurethane froth spraying system includes a hydrofluorocarbon blowing agent, a Mannich polyol, at least one additional polyol, a catalyst system, and a surfactant. The formulated resin composition has a hydroxyl content of at least 400 mg KOH/g and a polyurethane foam produced utilizing the formulated resin composition has a closed cell content of at least 90 percent. The formulated resin composition exhibits a zero ozone depleting potential and produces a polyurethane foam that cures faster than conventional sprayed polyurethane foams.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: March 18, 2003
    Assignee: BASF Corporation
    Inventors: Chris Lacarte, Greg Gardin, Thomas Harris
  • Patent number: 6495652
    Abstract: Prepolymers which contain isocyanate groups, have an NCO content of at least 30.0% by weight and can be prepared by reacting an isocyanate mixture consisting predominantly of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates and having a proportion of two-ring isomers of not more than 74% by weight with at least 4-functional polyols or a mixture of polyols having a mean functionality of at least 4, where the polyols or polyol mixtures have a hydroxyl number of from 200 to 1650 mg KOH/g and a number average molecular weight of less than 1100 g/mol.
    Type: Grant
    Filed: October 9, 2000
    Date of Patent: December 17, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Reichelt, Udo Rotermund, Renate Hempel, Peter Falke, Peter von Malotki, Holger Seifert
  • Patent number: 6489503
    Abstract: The present invention provides a liquid methylene bis(phenylisocyanate) composition including a high concentration of methylene bis(phenylisocyanate) which has an improved storage stability. The invention further provides a method of making the liquid methylene bis(phenylisocyanate) compositions of the present invention.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: December 3, 2002
    Assignee: BASF Corporation
    Inventors: Thirumurti Narayan, Anthony Lunato, Jon S. Speier, David D. Peters, Cynthia Loop, Filip Nevejans
  • Patent number: 6482893
    Abstract: Styrene copolymer compositions, especially ASA compositions, exhibit improved weatherability and color retention performance when processed according to the invention. Disclosed herein is a method of improving the weatherability and color retention performance of styrene copolymer compositions and exterior siding incorporating such styrene copolymer compositions. More specifically, a method is disclosed comprising improving the weatherability and color retention of styrene copolymer compositions, especially ASA compositions, which is advantageous with respect to cost and ease of manufacturing. Composite articles are also disclosed incorporating the foregoing improved styrene copolymer compositions as an exterior layer.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: November 19, 2002
    Assignee: BASF Corporation
    Inventors: Gary J. Kogowski, Heiner Goerrissen, Graham Edmund McKee
  • Patent number: 6476091
    Abstract: The present invention discloses a polyol resin composition containing a polyether polyol blend, a polyester polyol, and a hydrocarbon blowing agent. The polyether polyol blend has at least a diamine initiated polyol, a propylene oxide polyol, and a polyethylene terephthalate initiated polyol having a functionality of from 2.3 to 3.0. The polyester polyol is preferably a phthalic anhydride initiated polyester polyol. The blowing agent is a C4-C6 hydrocarbon. Also disclosed is a method of producing a polyurethane foam combining the above mentioned polyol resin and an isocyanate component.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 5, 2002
    Assignee: BASF Corporation
    Inventors: Walter R. White, III, Robert E. Riley, Jimmy L. Patterson, James A. Mullins
  • Patent number: 6472446
    Abstract: The present invention discloses a phase stable polyol blend composition containing a sucrose and dipropylene glycol co-initiated propylene oxide polyether polyol, a polyester polyol, a compatibilizing agent and a hydrocarbon blowing agent. The polyester polyol is preferably a phthalic anhydride-initiated polyester polyol. The compatibilizing agent is a butanol-initiated propylene oxide polyether surfactant.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: October 29, 2002
    Assignee: BASF Corporation
    Inventors: Robert E. Riley, Walter R. White, III, Jim Patterson
  • Patent number: 6469121
    Abstract: A method for the preparation of a storage stable organic polyisocyanate having allophanate linkages prepared by reacting a urethane containing organic polyisocyanate with a reactive hydroxyl compound in the presence of a liquid organic titanium oxide, or zirconium oxide, or hafnium oxide catalyst that is fully miscible in the reactive hydroxyl compound is disclosed. After completion of the allophanate reaction, the catalyst is deactivated by the use of a strong inorganic acid, organic acid, organic chloroformate or acid chloride.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: October 22, 2002
    Assignee: BASF Corporation
    Inventors: Jon Speier, Thirumurti Narayan, Nikolay Lebedinski
  • Patent number: 6464820
    Abstract: A method for preparing compression molded or pressed lignocellulosic articles is disclosed. The method involves forming a binder resin by combining a polyisocyanate component with a parting agent and preferably a synergist. The parting agent is the reaction product of an isocyanate compound and an isocyanate-reactive compound of the general structure R—(ao)n—Y where: R is a hydrophobic group containing alkyl, alkaryl, polyaryl, or siloxane moieties; (ao) is an alkylene oxide or mixture of alkylene oxides; n is from 1 to 25; and Y represents a monofunctional isocyanate-reactive group. A resinated lignocellulosic mixture is formed by combining the binder resin with lignocellulosic particles. Then a compression molded or pressed lignocellulosic article is formed by compressing the resinated lignocellulosic mixture at an elevated temperature and under pressure.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: October 15, 2002
    Assignee: BASF Corporation
    Inventors: Donald C. Mente, Li-Mei Lu, David D. Peters, Joe C. Wilson, Anthony G. Schaefer
  • Patent number: 6465596
    Abstract: In a process for preparing linear oligourethanes and polyurethanes by reacting 1 mole of a) diisocyanate with 1 mole of b) a compound having two groups which are reactive toward isocyanates, the functional groups of a) and/or b) have differing reactivities toward the functional groups of the other reactant and the reaction conditions are selected so that in each case only particular functional groups of a) and b) react with one another.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: October 15, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Bruchmann, Thomas Servay, Ulrich Treuling
  • Patent number: 6461536
    Abstract: A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an oxyethylated fatty acid or fatty alcohol compatibilizing agent having an HLB of from about 7 to about 12. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: October 8, 2002
    Assignee: BASF Corporation
    Inventors: Joe C. Wilson, Jimmy L. Patterson, James S. Dailey, Walter R. White, III, Robert E. Riley