Abstract: A method of forming a polyol includes the steps of reacting an initiator with an alkylene oxide, and optionally carbon dioxide, in the presence of a double metal cyanide catalyst and a sterically hindered chain transfer agent capable of protonating the growing polyol polymer. The presence of the chain transfer agent reduces the polydispersity of the resultant polyol.
Type:
Grant
Filed:
March 31, 2003
Date of Patent:
March 30, 2004
Assignee:
BASF Corporation
Inventors:
Werner Hinz, Jacob Wildeson, Edward Michael Dexheimer, Raymond Neff
Abstract: Polyols initiated with a first initiator having a relatively high functionality averaging greater than eight and comprising a range of species of different functionality, and optionally a second initiator, having low functionality, i.e. a two to eight nominal functionality initiator molecule. Another aspect of the invention is a process for making the polyol. The invention is also directed to a process for producing polyurethane foam by reacting the polyol of the invention with isocyanates, and the foam produced thereby.
Abstract: A method for the production of polyurethane products using very low unsaturation polyether polyols prepared in the presence of aluminum phosphonate catalysts is disclosed. Reaction products of the process include various polyurethane products including foams, coatings, adhesives, sealants and elastomers. The aluminum phosphonate catalyst preferably has a general structure of RPO-(OAlR′R″)2, wherein O represents oxygen, P represents pentavalent phosphorous, Al represents aluminum, R comprises a hydrogen, an alkyl group, or an aryl group, and R′ and R″ independently comprise a halide, an alkyl group, an alkoxy group, an aryl group, or an aryloxy group.
Abstract: The invention relates to an oil pan module (21) for internal combustion engines (1) and to a process for making such a part by injection molding. The oil pan module (21) is fastened to the housing (2) of the internal combustion engine (1) and holds the lubricating oil supply (7). Integrated with oil pan module (21) are parts (8, 9, 12) of the oil circulation system. Oil pan module (21) consists of a polyamide-based thermoplastic material reinforced with glass fibers and/or mineral matter.
Type:
Grant
Filed:
April 26, 2000
Date of Patent:
March 16, 2004
Assignee:
BASF Corporation
Inventors:
Walter Rau, Scott Schlicker, Ray Ballou, Eric Sattler, Douglas Shearin
Abstract: The invention provides composite components constructed of a layer i) comprising short fiber reinforced PU and having a paintable surface, and a layer ii) comprising long fiber reinforced polyurethane, and also provides a process for producing them, and provides for their use as exterior bodywork parts.
Type:
Grant
Filed:
April 10, 2002
Date of Patent:
February 24, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Georg Partusch, Michael Bauer, Michael Fader, Jörg Pöltl, Markus Templin, Ralf Fritz, Jürgen Schneider, Astrid Weidemann
Abstract: A process for preparing multimetal cyanide compounds by reacting a metal salt with a cyanometalate compound comprises the steps
a) precipitation of the multimetal cyanide compound by reaction of a metal salt with a cyanometalate compound and
b) recrystallization of the multimetal cyanide compound precipitated in step a).
Type:
Grant
Filed:
August 20, 2002
Date of Patent:
February 10, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Georg Heinrich Grosch, Dirk Franke, Manfred Munzinger, Kathrin Harre, Eva Baum, Michael Stösser
Abstract: Polyetherpolyols are prepared by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst by a process which is carried out in a vertical upright cylindrical reactor comprising a jet nozzle which is arranged in the upper reactor region and is directed downward and via which the starting materials and the reaction mixture are fed in, and comprising a take-off, preferably in the lower reactor region, via which the reaction mixture is fed back to the jet nozzle in an external circulation by means of a pump via an equilibration container, comprising a concentric guide tube which extends over the total length of the reactor, except for the reactor ends, and comprising a heat exchanger integrated in the annular space.
Type:
Grant
Filed:
July 5, 2002
Date of Patent:
January 6, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Thomas Ostrowski, Kathrin Harre, Peter Zehner, Jörn Müller, Dieter Stützer, Georg Heinrich Grosch, Jürgen Winkler, Stephan Bauer
Abstract: A process for working up distillation residues from the synthesis of tolylene diisocyanate by reaction of the distillation residues with water comprises reacting the TDI distillation residues with water in a continuous or semicontinuous process in a backmixed reactor in the presence of hydrolysate.
Type:
Grant
Filed:
December 14, 2000
Date of Patent:
January 6, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Hans Volkmar Schwarz, Markus Maurer, Michael Sander, Eckhard Ströfer, Rene Leuthold, Burghard Hantel, Siegfried Richter, Jörg Therre
Abstract: A process for the preparation of polyetherpolyols by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst is proposed, the reaction being carried out in a stirred kettle reactor and the reaction mixture being circulated via an external heat exchanger by means of a pump.
Type:
Grant
Filed:
August 20, 2002
Date of Patent:
December 16, 2003
Assignee:
BASF Aktiengesellschaft
Inventors:
Thomas Ostrowski, Kathrin Harre, Georg Heinrich Grosch, Gerd Höppner, Peter de Vocht, Dirk Leys, Jürgen Winkler, Stephan Bauer
Abstract: Highly resilient polyurethane foams are prepared by reacting
a) polyisocyanates with
b) compounds having at least two hydrogen atoms reactive with isocyanate groups,
by a process in which a mixture containing, based in each case on the weight of the mixture,
b1) from 5 to 75% by weight of at least one polymer polyol and
b2) from 25 to 95% by weight of a mixture containing, based in each case on the weight of the mixture b2),
b2i) from 70 to 98% by weight of at least one polyether alcohol having a molecular weight of from 3 500 to 6 500 g/mol, a functionality of less than or equal to 3 and an ethylene oxide content of from 8 to 20% by weight, based on the weight of the polyether alcohol, and
b2ii) from 2 to 30% by weight of at least one polyether alcohol having a molecular weight of from greater than 4 000 to 7 000 g/mol, a functionality of from 4 to 8 and an ethylene oxide content of from 5 to 15% by weight, based on the weight of the polyether alcohol,
is used as compounds b) having two hydrogen atom
Type:
Grant
Filed:
June 4, 2002
Date of Patent:
December 9, 2003
Assignee:
BASF Aktiengesellschaft
Inventors:
Andreas Arlt, Klaus Wagner, Volker Varenkamp
Abstract: In a process for preparing polyether alcohols by catalytic addition of at least two alkylene oxides onto H-functional initiator substances, at least one multimetal cyanide compound is used as catalyst and the addition of the alkylene oxides onto the initiator substance includes incorporation of at least one oxyalkylene block during whose formation at least two alkylene oxides are metered in together and the ratio of the alkylene oxides to one another in the mixture is changed during the joint introduction.
Type:
Grant
Filed:
May 21, 2002
Date of Patent:
November 25, 2003
Assignee:
BASF Aktiengesellschaft
Inventors:
Kathrin Harre, Gerd Höppner, Georg Heinrich Grosch, Stephan Bauer, Jürgen Winkler, Els Paredis, Reinhard Lorenz, Inge Rotermund
Abstract: The aromatic polyurethane elastomers of the present invention are particularly suited for methods of making objects in a mold cavity. The objects generally include an elastomeric layer formed from an aromatic polyurethane and a foam layer which is subsequently applied to the elastomer. The aromatic elastomer of the present invention lends itself to being precoated with an in-mold coating or being painted after demolding the resulting part.
Type:
Grant
Filed:
June 18, 2002
Date of Patent:
November 18, 2003
Assignee:
BASF Corporation
Inventors:
Richard P. Harrison, Joseph Ogonowski, Jon P. Pavlinac, L. Patrick Chang
Abstract: A method is disclosed for preparing compression molded or pressed lignocellulosic articles. The method involves forming a binder resin by combining a polyisocyanate component with a synergist component of a C1 to C4 N-alkyl pyrrolidone, gamma-butyrolactone, or mixtures thereof. A resinated lignocellulosic mixture is formed by combining the binder resin with lignocellulosic particles having a moisture content of from 2 to 15 weight percent. The compression molded or pressed lignocellulosic article is formed by compressing the resinated lignocellulosic mixture.
Abstract: An anti-lumping agent for use with expandable polystyrene beads is disclosed. The expandable polystyrene beads comprise a styrene or styrene derivative polymer in combination with a blowing agent. Typical blowing agents are C3-C6 hydrocarbons, with pentane being especially preferred. The anti-lumping agents include block copolymers formed from blocks of ethylene oxide and propylene oxide. Preferably, the copolymers have a number average molecular weight of from about 4,000 to 15,000, and a hydrophilic-lipophilic balance number of from about 16 to 29. The anti-lumping agents significantly reduce the lumping potential of the expandable polystyrene beads, especially when they are expanded to low densities of from about 1.5 to 0.75 lbs. per cubic foot, and more preferably to densities of from about 1.2 to 0.85.
Type:
Grant
Filed:
September 18, 2002
Date of Patent:
November 11, 2003
Assignee:
BASF Corporation
Inventors:
Ronald Gabbard, Bernhard Schmied, Eric R. Weisenbach, Robert D. Ober
Abstract: Reticulated 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 further assistants and additives (f), by a process in which the polyetherol mixture (b) comprises
b1) at least one difunctional or polyfunctional polyetherol having an OH number of from 20 to 150 mg KOH/g, based on propylene oxide and/or butylene oxide and ethylene oxide and having an ethylene oxide content of more than 40% by weight, based on the total amount of alkylene oxide used, (b1.
Type:
Grant
Filed:
January 15, 2002
Date of Patent:
October 28, 2003
Assignee:
BASF Aktiengesellschaft
Inventors:
Peter Falke, Heinz-Dieter Lutter, Michael J. Pcolinski
Abstract: A composite structure including a polyurea show surface, or top layer, and a polyurethane backing layer is disclosed. Preferably, the show surface of the composite structure is substantially free of volatile organic compounds and is aliphatic such that it is ultraviolet light stable. Specifically, the show surface is the reaction product of an aliphatic polyisocyanate or aliphatic polyisocyanate blend, and of a resin component which is a polyamine. The resin component reacts with the aliphatic polyisocyanate to form a polyurea. The show surface has a Shore D hardness of 70. Like the show surface, the polyurethane backing layer of the composite structure is substantially free of volatile organic compounds. This backing layer is the reaction product of a second polyisocyanate component, such as polymeric diphenylmethane diisocyanate, and of a second-layer resin component, which comprises a polyol having a functionality of at least three.
Type:
Grant
Filed:
August 31, 2001
Date of Patent:
September 9, 2003
Assignee:
BASF Corporation
Inventors:
Stephen Rickner, Joseph Jibrail, Jose Camba, Carlos Velasco, Jr., Calvin Peeler, Michael May
Abstract: The invention relates to a bearing unit (1) for receiving add-on parts and vehicle components on supporting parts of vehicles. The bearing unit (1) comprises at least one elastically deformable elastomeric component (3, 13) which is supported on a support (9). The support (9) has received elastomeric spring components (3, 13; 17, 18, 19, 20), not connected to one another.
Type:
Grant
Filed:
May 15, 2001
Date of Patent:
September 2, 2003
Assignee:
BASF Atiengesellschaft
Inventors:
Thomas Burlage, Martin Hoerauf, Frank Friedrich, Jan Wucherpfennig
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
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
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