Ingredient Contains A Carbon Atom Double Bonded To Oxygen, E.g., Carboxylic Acid, Etc. Patents (Class 521/130)
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Patent number: 6207725Abstract: Process for making rigid polyurethane or urethane-modified polyisocyanurate foams comprising the step of reacting an organic polyisocyanate composition with an isocyanate-reactive composition comprising a polyester polyol in the presence of an amine catalyst characterized in that the pKa of the conjugated ammonium salt of said amine is less than 12.Type: GrantFiled: October 17, 1997Date of Patent: March 27, 2001Assignee: Imperial Chemical Industries PLCInventors: Thomas Heinrich Sieker, Franco Gabrieli
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Patent number: 6197839Abstract: Compact and preferably cellular polyurethane elastomers are prepared by reacting a) relatively high molecular weight polyhydroxyl compounds and if desired, b) low molecular weight chain extenders and/or crosslinkers with c) phenylene 1,4-diisocyanate (p-PDI) and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 3,3′-dimethylbiphenyl diisocyanate, 1,2-diphenylethane diisocyanate and/or aliphatic diisocyanate, having from 4 to 12 carbon atoms and/or cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are advantageously reacted by the prepolymer method, in the presence or absence of d) catalysts, e) blowing agents and f) additives. Isocyanate prepolymers suitable for this purpose are described.Type: GrantFiled: January 11, 1999Date of Patent: March 6, 2001Assignee: BASF AktiengesellschaftInventors: Manfred Genz, Walter Haselhorst, Torsten Jeschke, Ute Bruns, Heinz Bollmann, Michael Strauss, Wolfgang Scholz, Rüdiger Voelkel, Hartmut Peuker, Gerhard Hellmann
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Patent number: 6194475Abstract: The invention relates to the use of metal salts of ricinoleic acid or solutions thereof in water or in organic solvents in producing polyurethane foams.Type: GrantFiled: December 16, 1999Date of Patent: February 27, 2001Assignee: Goldschmidt AGInventors: Tammo Boinowitz, Georg Burkhart, Ralf Hoffmann, Felix Müller, Hans-Heinrich Schlöns, Andreas Weier, Volker Zellmer, Rainer Ziegler
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Patent number: 6169157Abstract: This invention relates to a process for producing polyester-polyurethane compositions, and to the stabilization thereof in relation to hydrolytic ageing phenomena by an active ingredient combination comprising compounds containing carbodiimides with lactone derivatives, to mouldings produced therefrom and to the use thereof for semi-rigid, solid and/or cellular mouldings.Type: GrantFiled: September 13, 1999Date of Patent: January 2, 2001Assignee: Bayer AktiengesellschaftInventors: Erhard Michels, Klaus Pleiss, Hans-Norbert Dick
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Patent number: 6169124Abstract: In a process for producing self-releasing, compact or cellular moldings which comprise polyisocyanate polyaddition products and may contain reinforcing material by reacting a) organic and/or modified organic polyisocyanates with b) at least one compound containing at least two reactive hydrogen atoms and having a molecular weight of from 62 to 10,000 and, if desired, c) chain extenders and/or crosslinkers in the presence of d) internal mold release agents and in the presence of or absence of e) catalysts, f) blowing agents, g) reinforcing materials and h) auxiliaries in an open or closed mold, the internal mold release agents (d) used are diesters and/or monoesters of alkylsuccinic acids and/or diesters and/or monoesters of alkenylsuccinic acids.Type: GrantFiled: May 14, 1999Date of Patent: January 2, 2001Assignee: BASF AktiengesellschaftInventors: Peter Horn, Dietrich Scherzer, Karl H{umlaut over (a)}berle, Ulrich Treuling, Georg Partusch, G{umlaut over (u)}nter T{umlaut over (a)}nny, Axel Kistenmacher
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Patent number: 6153659Abstract: 3-{N-[2-(N',N'-dimethylamino ethoxy)ethyl]-N-methylamino}propionamide is a new compound which is useful as a catalyst in the production of polyurethane foams.Type: GrantFiled: December 7, 1999Date of Patent: November 28, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Richard Van Court Carr, Ning Chen, Mark Leo Listemann, Richard Paul Underwood
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Patent number: 6147133Abstract: A process and a device are described for the continuous production of block foam by the foaming of a mixture which reacts to form polyurethane and which contains carbon dioxide dissolved under pressure, wherein the pressure of the reactive mixture is reduced on passing through a pressure reduction zone in the form of an aperture, and blockage of the aperture is prevented by the relative movement of the aperture-delimiting faces with respect to each other.Type: GrantFiled: November 19, 1998Date of Patent: November 14, 2000Assignees: Hennecke GmbH, Bayer AktiengesellschaftInventors: Hans-Michael Sulzbach, Ferdinand Althausen, Reiner Raffel, Robert Eiben, Wilfried Ebeling
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Patent number: 6147131Abstract: High internal phase emulsions (HIPEs), porous polymeric materials made therefrom, and methods for making and using the same. Specific embodiments of the invention include water-in-oil high internal phase emulsions having at least 70 volume percent of an internal aqueous phase and less than 30 volume percent of an external oil phase wherein the oil phase comprises a vinyl polymerizable monomer and a surfactant effective to stabilize the emulsion. The subject surfactants are oil soluble and preferably include an oxyalkylene component.Type: GrantFiled: November 18, 1998Date of Patent: November 14, 2000Assignee: The Dow Chemical CompanyInventors: Steven W. Mork, Daniel Patrick Green, Gene D. Rose
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Patent number: 6136876Abstract: A method for preparing a flexible polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises an active methylene- or methine-group containing compound.Type: GrantFiled: November 17, 1998Date of Patent: October 24, 2000Assignee: Air Products and ChemicalsInventors: Ingrid Kristine Meier, Michael Louie
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Patent number: 6127442Abstract: A process is described for the continuous production of polyurethane block foam using carbon dioxide which is physically dissolved under pressure as a foaming agent, wherein before the polyol and isocyanate components are mixed the carbon dioxide is dissolved in the polyol component and air or nitrogen is dissolved in the isocyanate component, both components are fed to a mixing chamber in which a pressure prevails which is 70 to 150% of the solution pressure of the CO.sub.2 in the polyol component, the isocyanate component is fed to the mixing chamber at a pressure of at least 30 bar and is injected therein with depressurization down to the mixing chamber pressure, wherein air or nitrogen in an amount of at least 1 g per kg CO.sub.2 is dissolved in the isocyanate component, and after emerging from the mixing chamber the mixture is depressurization to atmospheric pressure.Type: GrantFiled: December 3, 1998Date of Patent: October 3, 2000Assignees: Hennecke GmbH, Bayer AktiengesellschaftInventors: Hans-Michael Sulzbach, Herbert Steilen, Reiner Raffel, Robert Eiben, Wilfried Ebeling
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Patent number: 6114402Abstract: A polyurethane composition to provide a rigid polyurethane foam suitable for use as a core material in a composite laminate and which polyurethane composition includes an additive compound or oligomer-prepolymer having hydroxy groups for reaction with the diisocyanate of the polyurethane or which has been prereacted with a diisocyanate and which contains after the polyurethane reaction ethylenically unsaturated groups, like allyl or acrylic groups, to react with an unsaturated polyester resin. The invention includes the organic additive oligomer-prepolymer and the hybrid polyester-rigid polyurethane laminates.Type: GrantFiled: October 3, 1997Date of Patent: September 5, 2000Assignee: Hehr International Inc.Inventor: Stuart B. Smith
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Patent number: 6086784Abstract: Premixes intended for the preparation of polyurethane or polyisocyanurate foams comprising at least one polyol, at least one hydrofluoroalkane corresponding to the general formula CF.sub.3 --CR.sup.1 R.sup.2 --CF.sub.2 --R.sup.3, where R.sup.1 and R.sup.2 represent, independently, a hydrogen atom or an optionally fluorinated C.sub.1 -C.sub.3 alkyl group and where R.sup.3 represents a hydrogen atom or a methyl group, and at least one stabilizer chosen from nitroalkanee, diketones, alkaline-earth metal salts and brominated compounds.Type: GrantFiled: October 13, 1998Date of Patent: July 11, 2000Assignee: Solvay S.A.Inventors: Pierre Barthelemy, Annie Leroy
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Patent number: 6080800Abstract: A method for preparing a flexible or semi-flexible polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opening additive characterized in that the cell opening additive comprises an aqueous dispersion of particles comprising a wax substance and optionally an emulsifier, at least 35% of the particles having a size of 0.2 to 5 microns and a melting point which ranges from 0 to 55.degree. C. below the maximum foam exotherm temperature.Type: GrantFiled: March 29, 1999Date of Patent: June 27, 2000Assignee: Air Products and Chemicals, Inc.Inventors: John Herbert Frey, Allen Robert Arnold, Jr., Timothy Charles Boyer, Kevin Rodney Lassila
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Patent number: 6057376Abstract: Stable high internal phase water-in-oil emulsions containing polymerizable vinyl monomers, crosslinking monomers and initiators are obtained, useful in producing low density porous crosslinked polymeric materials by using a surfactant system containing (a) an anionic surfactant, the anionic surfactant having an oil soluble tail and an anionic functional group and (b) one or more quatemary salts having one or more hydrocarbon groups having greater than or equal to 8 carbon atoms. A water-in-oil emulsion can be formed with lower surfactant concentration than sorbitan fatty acid ester alone and improved surfactant performance at elevated temperatures is obtained.Type: GrantFiled: July 21, 1997Date of Patent: May 2, 2000Assignee: Shell Oil CompanyInventors: Ronald Marshall Bass, Thomas Fairchild Brownscombe
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Patent number: 6057378Abstract: A process for improving the thermal insulation properties of articles such as jackets or slabs made of open cells polymeric foam material is disclosed. A viscous solution is prepared, capable of coating the inner walls of the passages interconnecting the cells. Particles of a size less than the minimum diametrical length of the passages are mixed with the solution. The article is soaked with the mixed solution, squeezed and dried, so that the particles dispersed within the passages partly block the flow of air between adjacent cells.Type: GrantFiled: May 13, 1997Date of Patent: May 2, 2000Assignee: Isoltherm A.P. Ltd.Inventors: Alexander Perstnev, Samuel Perstnev
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Patent number: 6054499Abstract: A prepolymer composition for producing polyurethane insulating foams from pressure tanks which consists of a prepolymer component with at least one PU prepolymer with a content of NCO groups of 4 to 20 wt % and usual additives, as well as a propellant component, with a content of 0.01 to 2 wt %, based on the prepolymer component, of polybutadiene.Type: GrantFiled: October 16, 1995Date of Patent: April 25, 2000Assignee: Rathor AGInventors: Mathias Pauls, Rene Schumacher
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Patent number: 6051622Abstract: Molded polyurethane seating foams exhibiting low resonant frequencies and low ball rebound are produced by reacting an isocyanate-terminated prepolymer prepared from a polyol component comprising in major part one or more low intrinsic unsaturation substantially polyoxypropylene polyols and/or polymer polyols with a blowing/chain extending stream comprising water and optionally amines and alkanolamines.Type: GrantFiled: September 17, 1998Date of Patent: April 18, 2000Assignee: Arco Chemical Technology, L.P.Inventors: Mark R. Kinkelaar, Andrew M. Thompson, Daniel P. Krisher
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Patent number: 6043290Abstract: A method for preparing a polyurethane flexible foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises the reaction product of a C1-C20 hydrocarbyl group-containing organic acid anhydride and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, optionally reacted in the presence of a tertiary amine urethane catalyst.Type: GrantFiled: June 22, 1999Date of Patent: March 28, 2000Assignee: Air Products and Chemicals, Inc.Inventor: Robert G. Petrella
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Patent number: 6034145Abstract: Use of a mixture of at least two different polyoxyethylene polyether monols to solubilise hydrocarbon blowing agents in polyol compositions for rigid polyurethane foams.Type: GrantFiled: March 17, 1998Date of Patent: March 7, 2000Assignee: Imperial Chemical Industries PLCInventors: Philip Cornet, Rik De Vos, Maria Vittoria Franco
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Patent number: 6034148Abstract: Polyurethane foams formed at elevated pressure using a graft polyol, or mixture of polyols to form a polyol system, having a low functionality and a high solids content, exhibit superior dynamic shock cushioning characteristics (energy absorption) as illustrated by the drop curves of deceleration versus static load. The foam-forming ingredients are mixed together and foamed under controlled pressures in the range of 1.2 to 1.5 bar, preferably 1.3 to 1.4 bar. The polyol preferably has a functionality in the range of about 2.0 to 2.5, a hydroxyl number in the range of about 50 to 90, a solids content above about 35%, preferably about 50 to 55%.Type: GrantFiled: December 31, 1997Date of Patent: March 7, 2000Assignee: Foamex L.P.Inventors: David J. Kelly, Beat Niederoest
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Patent number: 6034147Abstract: A process for the manufacture of polyurethane foam comprising the steps of (i) mixing at a reaction index of 40 to 400: (a) a polyisocyanate blend comprising at least one polyisocyanate and optionally, additives and fillers; (b) a polyol blend comprising isocyanate reactive components and optionally, water, additional blowing agents, catalysts, surfactants, fillers and other additives; wherein either or both said polyisocyanate blend or said polyol blend contain between 0.3 to about 20 wt. % CO.sub.2 based on the total weight of said polyisocyanate blend and said polyol blend; (ii) introducing and uniformly mixing in liquid form of CO.sub.2 as a blowing agent into either or both said polyisocyanate blend or said polyol blend and maintaining said CO.sub.2 in said liquid form. The present invention also relates to an apparatus, which performs the above-mentioned process.Type: GrantFiled: June 30, 1998Date of Patent: March 7, 2000Assignee: Bayer CorporationInventors: David A. Radovich, David D. Steppan, Keith G. Spitler, James D. Shoup
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Patent number: 6031013Abstract: In a process for producing foams based on polyisocyanate polyaddition products by reacting isocyanates with compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000 in the presence of blowing agents, catalysts and, if desired, chain extenders and/or crosslinkers having a molecular weight of <400, auxiliaries and/or additives, use is made of isocyanates having isocyanurate and/or biuret structures, at least one compound which is reactive toward isocyanates, has a molecular weight of from 400 to 8000 and contains at least 50% primary hydroxyl groups, as catalysts at least one tertiary amine and at least one metal salt plus from 0.5 to 5.3% by weight of water, based on the weight of the compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000, and the reaction is carried out at >40.degree. C.Type: GrantFiled: October 21, 1998Date of Patent: February 29, 2000Assignee: BASF AktiengesellschaftInventors: Dietrich Scherzer, Ulrich Treuling, Jurgen Mertes, Rolf Illguth
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Patent number: 6020387Abstract: A low density polymer composition including a polymer component capable of being cured, a low density filler in an amount sufficient to reduce the density of the polymer and a thixotrope present in a sufficient amount to impart a sufficient viscosity and to inhibit separation of the filler from the polymer until after the polymer is cured. The resulting lightweight, filled polymer composition is a strong electrical insulator, has low shrinkage, a low coefficient of thermal expansion, low cured density and a soft filler that does not harden the polymer. Methods of preparing and using the low density polymer compositions are also disclosed.Type: GrantFiled: September 22, 1997Date of Patent: February 1, 2000Assignee: Caschem, Inc.Inventors: William J. Downey, Christopher Andreola, Paul R. Lydigsen, Wayne E. Wright
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Patent number: 6020392Abstract: A method for making a polyurea microcellular elastomeric foam by reacting an organic polyisocyanate with a di-(aminobenzoate) ester of an oligomeric polyol in the presence of a blowing agent and, optionally, urethane catalyst and cell stabilizing agent.Type: GrantFiled: September 4, 1998Date of Patent: February 1, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Sandra Ann Kushner, John William Miller, James Douglas Tobias
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Patent number: 6020389Abstract: The present invention pertains to a process for foaming mixtures of bifunctionally-ending di-organopolysiloxanes and acyloxsilane cross-linking agents, involving the addition to the mixture of sufficient quantities of an ammonium, amino, sodium or potassiumn hydrocarbonate.Type: GrantFiled: April 10, 1998Date of Patent: February 1, 2000Assignee: Heidelberger Bauchemie GmbHInventor: Rudolf Hoheneder
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Patent number: 6013691Abstract: The present invention discloses a foam frothing alternative for blowing or frothing single component foams using gases which are incapable of being liquified within the limits of DOT aerosol cans, referred to herein as non-liquefiable gases. In this invention, it is demonstrated that non-liquefiable gases such as CO.sub.2 and N.sub.2 O can be used to provide foams using conventional single component foam chemical raw materials. The present invention provides an adhesive/sealant, expanded by a non-liquefiable gas propelled from a container initially and expanded by a blowing agent consisting primarily or exclusively of a non-liquefiable gas and formulated from a moisture curable polyurethane prepolymer using a low molecular weight isocyanate of two or more functionality. In one or more variations, the compositions of the present invention contain solubility enhancers for non-liquefiable gases such as CO.sub.Type: GrantFiled: May 21, 1996Date of Patent: January 11, 2000Assignee: Insta-Foam Products, Inc.Inventors: Robert Braun, Jess Garcia, Dawn Kissack, Gina Pietrzyk, Deborah Schutter
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Patent number: 6001890Abstract: Process for making open celled (semi-) rigid polyurethane foams using as cell opening agent a fatty acid or a fatty acid amine or a fatty acid amide or a fatty acid ester.Type: GrantFiled: April 27, 1998Date of Patent: December 14, 1999Assignee: Imperial Chemical Industries PLCInventor: James Alan Hamilton
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Patent number: 5998494Abstract: Process for the preparation of rigid open celled polyurethane foams comprising the step of reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promotor which is an isocyanate-reactive cyclic carbonate or cyclic urea, and in the presence of an aminoalcohol catalyst.Type: GrantFiled: May 27, 1998Date of Patent: December 7, 1999Assignee: Imperial Chemical Industries PLCInventor: Alan James Hamilton
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Patent number: 5990184Abstract: Process for making polyisocyanate based aerogels by trimerisation of an organic polyisocyanate in an organic solvent in the presence of a (co)polymer containing an isocyanate-reactive group, gellation and supercritically drying of the obtained sol-gel.Type: GrantFiled: March 31, 1998Date of Patent: November 23, 1999Assignee: Imperial Chemical Industries PLCInventor: Guy Leon Jean Ghislain Biesmans
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Patent number: 5977194Abstract: High internal phase emulsions having an internal aqueous phase of greater than 70 percent by volume and an external oil phase comprising a vinyl polymerizable monomer contain a surfactant capable of chemically binding to the polymerizable monomer. Polymeric foams having a high internal phase emulsion stabilizing surfactant chemically bound to the polymeric material and a liquid capacity of from about 70 to 99 percent of its saturated volume can be prepared from such emulsions.Type: GrantFiled: November 15, 1995Date of Patent: November 2, 1999Assignee: The Dow Chemical CompanyInventors: Steven W. Mork, Gene D. Rose
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Patent number: 5977198Abstract: This invention relates to a process for the production of resilient, flexible polyurethane foams. This process comprises reactingA) polyisocyanates or polyisocyanate prepolymers,B) compounds having at least two isocyanate-reactive hydrogen atoms and a molecular weight of 500 to 18000,C) optionally, compounds having at least two isocyanate-reactive hydrogen atoms and a molecular weight from 32 to 499,D) water,E) optionally, blowing agents,F) activators, stabilizers and other per se known additives, andG) one or more crosslinking agents,wherein component B) comprisesB)i) at least one polyether polyol having of a functionality of 4 to 8 preferably of 4.5 to 8, more preferably of 5 to 7, andB)ii) at least one polyol containing a filler from the group of PUD-, SAN- or PIPA-modified polyols of a functionality of 2.Type: GrantFiled: June 12, 1998Date of Patent: November 2, 1999Assignee: Bayer AktiengesellschaftInventors: Hans Hettel, Peter Haas
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Patent number: 5945461Abstract: Foamed in place polymer compositions are made from monomer-in-polymer solutions containing free radical polymerization catalysts and foaming agents.Type: GrantFiled: March 21, 1991Date of Patent: August 31, 1999Assignee: Illinois Tool Works Inc.Inventors: Donald E. Gosiewski, Paul C. Briggs
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Patent number: 5942553Abstract: The disclosed invention relates to polyisocyanate based aerogels and their method of preparation. The aerogels are produced by mixing an organic polyisocyanate, carbon black and catalyst in a solvent. The invention advantageously enables preparation of filled polyisocyanate based organic aerogels of lower density than aerogels which do not include a filler.Type: GrantFiled: November 20, 1997Date of Patent: August 24, 1999Assignee: Imperial Chemical Industries PLCInventors: Guy Leon Biesmans, Andy Mertens
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Patent number: 5939463Abstract: A blowing agent for foaming polystyrene consisting essentially of at least one low permeability volatile organic compound, at least one low volatility non-volatile organic compound and, optionally, at least one high volatility non-volatile organic compound. In one embodiment, the low permeability volatile organic compound is selected from the group consisting of isopentane and isobutane, the low volatility non-volatile organic compound is acetone and the high volatility non-volatile organic compound is carbon dioxide. The blowing agent of the present invention may be used to foam a polystyrene foam structure. The blowing agent is directed to achieving low fugitive volatile organic compounds (VOC) emissions.Type: GrantFiled: October 1, 1997Date of Patent: August 17, 1999Assignee: Tenneco PackagingInventors: Wen Pao Wu, Gary A. Francis
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Patent number: 5889286Abstract: Premixes intended for the preparation of polyurethane or polyisocyanurate foams comprising at least one polyol, at least one hydrofluoroalkane corresponding to the general formula CF.sub.3 --CR.sup.1 R.sup.2 --CF.sub.2 --R.sup.3, where R.sup.1 and R.sup.2 represent, independently, a hydrogen atom or an optionally fluorinated C.sub.1 -C.sub.3 alkyl group and where R.sup.3 represents a hydrogen atom or a methyl group, and at least one stabilizer chosen from nitroalkanes, diketones, alkaline-earth metal salts and brominated compounds.Type: GrantFiled: September 23, 1996Date of Patent: March 30, 1999Assignee: Solvay (Societe Anonyme)Inventors: Pierre Barthelemy, Annie Leroy
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Patent number: 5883143Abstract: A method and device are described for the production of foams from two-component reactive mixtures using carbon dioxide as expanding agent, by mixing at least one of the reactive components with carbon dioxide under pressure. That mixture is then mixed with the other reactive component(s) to form a foamable reactive mixture, which is expanded and cured to form the final product. The foamable reactive mixture is expanded to ambient pressure through at least one fine-meshed screen (21a, 21b, 21c).Type: GrantFiled: June 18, 1998Date of Patent: March 16, 1999Assignees: Bayer Aktiengesellschaft, Maschinenfabrik Hennecke GmbHInventors: Robert Eiben, Wilfried Ebeling, Hans-Michael Sulzbach, Reiner Raffel
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Patent number: 5869545Abstract: Preparation of polyisocyanate-based aerogels in the presence of polyfunctional isocyanatge-reactive compounds having an average nominal hydroxyl functionality 2 to 4 and number average molecular weight 50 to 5000, especially linear glycols containing from 2 to 30 carbon atoms.Type: GrantFiled: February 18, 1998Date of Patent: February 9, 1999Assignee: Inperial Chemical Industries PLCInventors: Guy Leon Biesmans, David Randall, Els Van Isterdael
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Patent number: 5869546Abstract: Mixtures leading to hard polyurethane foamed materials, which mixtures are preferably present in a pressure vessel, containa) prepolymers containing isocyanate groups, obtainable by the reaction of polyisocyanates containing isocyanurate groups and optionally urethane groups with compounds having at least two hydrogen atoms which are reactive to isocyanates and having a molecular weight of 62 to 10,000, wherein the content of monomeric polyisocyanate in the prepolymer is less than 2 weight %,b) auxiliary process materials and additives known in the art, andc) foaming agents having a boiling point less than 0.degree. C./760 mm Hg.Type: GrantFiled: September 20, 1996Date of Patent: February 9, 1999Assignee: Bayer AktiengesellschaftInventors: Peter Gruss, Manfred Kapps, Peter Vehlewald, Rainer Rettig
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Patent number: 5866626Abstract: A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate; (b) a polyol; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate and the polyol; and (d) a blowing agent comprised at least partially from a high purity cyclopentane product, wherein the high purity cyclopentane product is about 95% or greater pure cyclopentane, and, optionally, (e) water and/or (f) liquid flame retardant.Type: GrantFiled: November 25, 1996Date of Patent: February 2, 1999Assignee: Exxon Chemical Patents Inc.Inventors: Robert H. Blanpied, James Darryl Thornsberry, Steven E. Silverberg, James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Tronze-I Dennis Wu
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Patent number: 5859078Abstract: A polyurethane or polyisocyanurate foam is derived from a mixture comprising a crude isocyanate component and a polyol component which contains all or some of the following products in a homogeneous mixture: polyols, catalysts, surfactants, water, flame-retardants, expanding agents, fillers, dyes and pigments, in which the expanding agents comprise a pentane component associated with a dialkanolamide derived from fatty or oily substances of vegetable origin.Type: GrantFiled: March 24, 1997Date of Patent: January 12, 1999Assignee: Ediltec S.r.l.Inventor: Claudio Chittolini
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Patent number: 5847018Abstract: A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate; (b) a polyol; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate and the polyol; and (d) a blowing agent comprised at least partially from a high purity cyclopentane product, wherein the high purity cyclopentane product is about 95% or greater pure cyclopentane, and, optionally, (e) water and/or (f) liquid flame retardant.Type: GrantFiled: July 22, 1997Date of Patent: December 8, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Robert H. Blanpied, James Darryl Thornsberry, Steven E. Silverberg, James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Tronze-I Dennis Wu
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Patent number: 5844013Abstract: Hydrophilic polyurethane gel foams are obtainable from a polyurethane gel defined in the description, from a water-absorbing material and from a non-aqueous foaming agent and can be used in medicine, in particular for the management of deep wounds and wound cavities. Wound dressings are obtainable with a polyurethane sheet as backing and a polyurethane gel foam composed of a polyurethane gel defined in the description, of a water-absorbing material and of a non-aqueous foaming agent.Type: GrantFiled: May 30, 1995Date of Patent: December 1, 1998Assignee: Beiersdorf AGInventors: Jochen Kenndoff, Vadim Lenuck, Gunther Sachau
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Patent number: 5844012Abstract: A method for producing water-blown molded flexible polyurethane foam which comprises reacting and foaming in one step in a mold a reaction mixture comprising a polyol, an organic polyisocyanate, a urethane catalyst composition and water and a trimerization catalyst which is a quaternary ammonium salt or an alkali metal or alkaline earth metal salt of a Bronsted acid having a pKa of >1, characterized in that the trimerization catalyst is present in an amount from about 0.005 to 0.04 gram milliequivalents per 100 grams of polyol. The preferred trimerization catalyst is an alkali metal N-(2-hydroxyphenyl)methyl glycinate, especially an alkali metal N-(2-hydroxy-5-nonylphenyl)methyl-N-methyl glycinate.Type: GrantFiled: August 1, 1997Date of Patent: December 1, 1998Assignee: Air Products and Chemicals, Inc.Inventors: Robert Gabriel Petrella, John Joseph Koch, Thomas William Bodnar
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Patent number: 5834579Abstract: Tertiary amines having carbonate and urethane groups and optionally hydroxyl groups are produced by reacting a) a polyhydric alcohol and b) a primary-tertiary diamine with c) a carbonic acid derivative selected from the group consisting of optionally cyclic carbonates, urea, phosgene and bis-chlorocarbonates of alcohols of the same type as those used as component a). This reaction may be carried out in one or two steps. The tertiary amines produced by this process are useful as catalysts, which may optionally be incorporated into an isocyanate-reactive material, in the isocyanate addition reaction for the production of polyurethane plastics. These tertiary amines are particularly useful for the production of foam backed plastic films.Type: GrantFiled: June 16, 1997Date of Patent: November 10, 1998Assignee: Bayer AktiengesellschaftInventors: Klaus Konig, Ulrich Liman, Josef Sanders
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Patent number: 5834527Abstract: A process for the manufacture of polyurethane foam moldings is described wherein carbon dioxide physically dissolved under pressure is used as the blowing agent and a pressure is maintained in the mold cavity during the introduction of the polyurethane reactive mixture so as to prevent the complete release of the dissolved carbon dioxide.Type: GrantFiled: July 8, 1996Date of Patent: November 10, 1998Assignee: Maschinenfabrik Hennecke GmbHInventor: Hans-Michael Sulzbach
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Patent number: 5807958Abstract: Alkaline metal and alkaline earth metal salts of alkyl and alkenyl succinic acids as catalysts for the manufacture of polyurethanes and/or polyureas are provided. Said catalysts are particularly suitable for manufacturing foams of said polymers and have a favorable influence on the cell structures of said materials.Type: GrantFiled: August 1, 1997Date of Patent: September 15, 1998Assignee: Air Products and Chemicals, Inc.Inventors: Klaus Diblitz, Peter Finmans
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Patent number: 5801210Abstract: A process for the manufacture of polyurethane foam comprising the steps of (i) mixing at a reaction index of 40 to 400: (a) a polyisocyanate blend comprising at least one polyisocyanate and optionally, additives and fillers; (b) a polyol blend comprising isocyanate reactive components and optionally, water, additional blowing agents, catalysts, surfactants, fillers and other additives; wherein either or both said polyisocyanate blend or said polyol blend contain between 0.3 to about 20 wt. % CO.sub.2 based on the total weight of said polyisocyanate blend and said polyol blend; (ii) introducing and uniformly mixing in liquid form of CO.sub.2 as a blowing agent into either or both said polyisocyanate blend or said polyol blend and maintaining said CO.sub.2 in said liquid form. The present invention also relates to an apparatus, which performs the above-mentioned process.Type: GrantFiled: October 29, 1997Date of Patent: September 1, 1998Assignee: Bayer CorporationInventors: David A. Radovich, David D. Steppan, Keith G. Spitler, James D. Shoup
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Patent number: 5801209Abstract: Disclosed are foamable EPDM compositions comprising EPDM, a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115 cc/100 g and a blowing agent which are advantageous for use in applications where UHF microwave curing is utilized and for replacing foamable EPDM compositions incorporating similar amounts of conventional blends of carbon blacks. Also disclosed are foamed, cured EPDM compositions comprising: EPDM and a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115 cc/100 g which have advantageously lower sponge density and lower sponge compression set than EPDM compositions incorporating similar amounts of conventional low reinforcing carbon blacks. Further disclosed is a process for producing the foamed, cured EPDM compositions of the present invention. Additionally disclosed is use of the foamed, cured EPDM compositions of the present invention as weatherstripping.Type: GrantFiled: August 15, 1997Date of Patent: September 1, 1998Assignee: Cabot CorporationInventors: Bin Chung, Bruce E. Mackay, Ivan Zlatko Podobnik
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Patent number: 5798533Abstract: A polyol composition is provided which when reacted with and organic isocyanate, has good flow characteristics and makes an all water blown rigid polyurethane foam having good dimensional stability at low core densities of 1.1 pcf to 2.0 pcf. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less, an average functionality of 3.1 or greater, and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and an equivalent weight of greater than 130. The polyol composition also has water as the blowing agent, and further contains a blow catalyst, a delayed action gel catalyst, and preferably a cure catalyst and a surfactant.Type: GrantFiled: April 21, 1995Date of Patent: August 25, 1998Assignee: BASF CorporationInventors: Thomas L. Fishback, Curtis J. Reichel, Thomas B. Lee
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Patent number: 5792801Abstract: A thermal insulating foamed material is a polyurethane foam having closed cells, and produced by mixing, agitating and foaming a polyol, a polyisocyanate, a foam stabilizer, a catalyst, a blowing agent and a carbon dioxide adsorbent. The carbon dioxide adsorbent is produced by mixing and granulating powders of at least one member of alkali metal hydroxides and alkaline-earth metal hydroxides and organic or inorganic powders having a water absorbing property and soaked with water in advance, and formed by a resin film, such as a methacrylic acid ester, which is permeable to carbon dioxide but hardly permeable to water.Type: GrantFiled: January 22, 1996Date of Patent: August 11, 1998Assignee: Matsushita Refrigeration CompanyInventors: Yoshiyuki Tsuda, Kazutaka Uekado, Hideo Nakamoto, Tomohisa Tenra, Tsukasa Takushima