Nitrogen Reactant Contains A C-xh Group Wherein X Is A Chalcogen Atom And Wherein The C Atom Is Not Double-bonded To A Chalcogen Atom Patents (Class 521/164)
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Patent number: 6458860Abstract: Provided herein are catalyst systems useful for providing polyurethane foam products which exhibit low fogging characteristics while possessing favorable overall physical properties when used as interior components of automobiles and other motorized vehicles.Type: GrantFiled: January 7, 2002Date of Patent: October 1, 2002Assignee: Huntsman Petrochemical CorporationInventors: Heiko H. Humbert, Robert Allison Grigsby, Jr.
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Patent number: 6433032Abstract: Process for the preparation of open celled rigid polyurethane or urethane-modified polyisocyanurate foams by reaction of a polyfunctional isocyanate-reactive composition with a polyisocyanate composition comprising a prepolymer of NCO-value 21-30% based on a high molecular weight oxyethylene-containing polyol.Type: GrantFiled: March 30, 1999Date of Patent: August 13, 2002Assignee: Imperial Chemical Industries PLCInventor: Alan James Hamilton
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Patent number: 6410608Abstract: A process for producing a polyurethane foam comprising reacting a polyol component with an isocyanate component in the presence of a catalyst comprising a compound represented by the formula (I): wherein p is an integer of 4 to 8, and a compound having a primary amino group and a tertiary amino group in its molecule, a blowing agent and a surfactant. The polyurethane foam obtained by the process of the present invention can be suitably used for heat insulating materials for construction materials, electric refrigerators, refrigerated warehouses, baths and the like, interior materials for automobiles, and the like.Type: GrantFiled: April 27, 2001Date of Patent: June 25, 2002Assignee: Kao CorporationInventors: Mitsuru Sakai, Atsushi Ishikawa, Masayoshi Morii
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Patent number: 6387972Abstract: An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and a polyfunctional isocyanate-reactive component wherein said reactions are conducted in the presence of catalysts composed of (a) a specific reactive tertiary amine compound selected from the group consisting of bis(dimethylaminopropyl)amino-2-propanol, bis(dimethylaminopropyl)amine, dimethylaminopropyldipropanolamine, bis(dimethylamino)-2-propanol, N,N,N′-trimethyl-N′-hydroxyethyl-bis(aminoethyl)ether and mixtures thereof; and (b) at least one carboxylic acid salt of the specific reactive tertiary amine compound selected from the group consisting of hydroxy-carboxylic acid salts and halo-carboxylic acid salts.Type: GrantFiled: February 15, 2001Date of Patent: May 14, 2002Assignee: Crompton CorporationInventors: Hassan El Ghobary, Louis Muller
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Patent number: 6306920Abstract: Closed cell rigid polyurethane foams are produced by reacting a) a polyol component with b) a polyisocyanate having an NCO content of from about 20 to about 48% by weight.Type: GrantFiled: November 18, 1999Date of Patent: October 23, 2001Assignee: Bayer AktiengesellschaftInventors: Torsten Heinemann, Werner Dietrich, Walter Klän
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Patent number: 6274639Abstract: An improved durable, low density, high build polyurethane coating is disclosed, as well as its method of manufacture. A slow reacting polyisocyanate is combined with a polyol so as to form a uniform mixture with an extremely long pot life. The low viscosity uniform mixture can then be sprayed onto a substrate using a conventional spray gun. A polyurethane catalyst is introduced after formation of the uniform mixture, preferably via a second spray nozzle so that catalyst is externally mixed into the polyisocyanate/polyol spray stream. This is a 100%, or near 100%, solids system so that there is very low volatile organic compound emissions.Type: GrantFiled: April 20, 2000Date of Patent: August 14, 2001Assignee: Lockheed Martin CorporationInventors: James E. Foreman, Douglas R. Dowell, Bobby G. Isler
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Patent number: 6248801Abstract: A method for making flexible polyurethane foam in which a polyisocyanate is reacted with a polyol in the presence of a urethane catalyst, a blowing agent, optionally a silicone surfactant cell stabilizer, and a cell opening additive. The cell opening additive comprises an active methylene or methine compound which also contains a tertiary amine. Preferred cell opening additives are 2-cyano-N-[3-(dimethylamino)-propyl]acetamide and (NC)CH2C(O)OCH2CH2N(CH3)CH2CH2OCH2CH2N(CH3)2.Type: GrantFiled: November 12, 1999Date of Patent: June 19, 2001Assignee: Air Products and Chemicals, Inc.Inventor: Ingrid Kristine Meier
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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: 6103776Abstract: Phenolic amides, useful as stabilizers for organic materials such as polyols and polyurethanes, possess the general formula ##STR1## wherein n is 0 to 3, R.sub.1 is alkyl of from 1 to about 6 carbon atoms, R.sub.2 is hydrogen or alkyl of from 1 to about 6 carbon atoms, R.sub.3 is hydrogen or hydrocarbyl of up to about 20 carbon atoms, optionally containing one or more heterocyclic groups, R.sub.4 is hydrocarbyl of up to about 20 carbon atoms, optionally containing one or more heterocyclic groups, or R.sub.3 and R.sub.4 together with the nitrogen atom to which they are bonded are joined together to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms.Type: GrantFiled: January 26, 1999Date of Patent: August 15, 2000Assignee: Uniroyal Chemical Company, Inc.Inventors: Robert G. Rowland, John R. Baranski
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Patent number: 6093342Abstract: A homogeneous, demixing-stable polyol component comprising at least two relatively high molecular weight compounds containing at least two reactive hydrogen atoms and, if desired, low molecular weight chain extenders and/or crosslinkers and also, if desired, blowing agents, catalysts and further auxiliaries and/or additives is prepared by adding at least one amine and at least one organic and/or modified organic isocyanate to this component.This polyol component is useful for producing polyurethanes, in particular compact and foamed polyurethanes.Type: GrantFiled: February 17, 1998Date of Patent: July 25, 2000Assignee: BASF AktiengesellschaftInventors: Peter Falke, Regina Hendreich, Marita Schuster, Bernd Zaschke
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Patent number: 6084001Abstract: An improved durable, low density, high build polyurethane coating is disclosed, as well as its method of manufacture. A slow reacting polyisocyanate is combined with a polyol so as to form a uniform mixture with an extremely long pot life. The low viscosity uniform mixture can then be sprayed onto a substrate using a conventional spray gun. A polyurethane catalyst is introduced after formation of the uniform mixture, preferably via a second spray nozzle so that catalyst is externally mixed into the polyisocyanate/polyol spray stream. This is a 100%, or near 100%, solids system so that there is very low volatile organic compound emissions.Type: GrantFiled: April 25, 1996Date of Patent: July 4, 2000Assignee: Lockheed Martin CorporationInventors: James E. Foreman, Douglas R. Dowell, Bobby G. Isler
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Patent number: 6077927Abstract: A method of providing for manufacturing a colored polymer resin having the steps of:(a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene) substituent comprising from 2 to 200 alkylene oxide residues, bonded to each end of the disazo chromophore, the poly(oxyalkylene) substituent having a nucleophilic terminal group which is capable of reacting with at least a portion of the monomers;(b) providing conditions under which the monomers and disazo colorant polymerize to form a colored polymer resin.Type: GrantFiled: October 23, 1998Date of Patent: June 20, 2000Assignee: Milliken & CompanyInventors: Eric B. Stephens, Mark E. Ragsdale, David J. Moody
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Patent number: 6063308Abstract: A process for preparing a homogeneous polyol component which is stable to separation and consists of at least one compound of relatively high molecular weight having at least two reactive hydrogen atoms and low-molecular-weight chain extenders and/or crosslinkers and, if desired, of blowing agents, catalysts and other auxiliaries and/or additives comprises the addition to this component of at least one amine and at least one organic and/or modified organic isocyanate; the invention also provides the corresponding polyol component which is stable to separation.The use of this polyol component for preparing PUR, in particular compact or foamed PUR, is also described.Type: GrantFiled: February 17, 1998Date of Patent: May 16, 2000Assignee: BASF AktiengesellschaftInventors: Peter Falke, Regina Hendreich, Ralf Fritz, Inge Rotermund
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Patent number: 6040349Abstract: A process for producing rigid polyurethane foams with reduced density by reactinga) organic and/or modified organic polyisocyanates withb) at least one higher-molecular-weight compound having at least two reactive hydrogen atoms and, if desired,c) low-molecular-weight chain extenders and/or crosslinkers in the presence ofd) blowing agents,e) catalysts and, if desired,f) other auxiliaries and/or additives,is described, which comprises using, as blowing agent (d), a mixture of cyclopentane with at least one compound which is homogeneously miscible with cyclopentane selected from the class consisting of the alkanes and/or alkenes having 3 or 4 carbon atoms in the molecule and with the carbon dioxide produced from water and isocyanate, and using, as higher-molecular-weight compound (b) having at least two reactive hydrogen atoms, polyethers which contain aromatics and nitrogen.The use of the rigid foams produced in this way as insulating material is also described.Type: GrantFiled: March 11, 1998Date of Patent: March 21, 2000Assignee: BASF AktiegesellschaftInventors: Gottfried Knorr, Udo Rotermund, Eva Baum, Holger Seifert, Werner Wiegmann
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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: 6005016Abstract: The present invention is directed to a rigid, molded foam produced by reacting: a) one or more organic polyisocyanates, with b) a polyol blend comprising i) 100 parts by weight of a mixture comprising: 1) from 30 to 80 parts by weight of one or more polyethers having hydroxy functionalities of 2 or 3 and molecular weights of from about 1,000 to about 8,000, the polyethers further being characterized as containing no nitrogen atoms and not being filled polyethers, 2) from 10 to 50 parts by weight of one or more adducts of toluene diamine and an alkylene oxide, the adduct having a molecular weight of from about 350 to about 700, 3) from 0 to 15 parts by weight of one or more di- or trialkanol amines, with the amounts of components 1), 2) and 3) totaling 100 parts, and c) from about 0.1 to about 4 parts by weight per 100 parts by weight of component b) of a silicone cell-opening surfactant and d) from 1 to 7 parts by weight of water, and e) from 0.Type: GrantFiled: October 6, 1998Date of Patent: December 21, 1999Assignee: Bayer CorporationInventors: Neil H. Nodelman, David D. Steppan, John W. Jenny, Peter Gansen
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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: 5981612Abstract: The flameproofed, rigid, isocyanate-based foams, in particular rigid polyurethane and polyisocyanurate foams, are produced by reactinga) organic and/or modified organic polyisocyanates withb) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired,c) low-molecular-weight chain extenders and/or crosslinking agents, in the presence ofd) blowing agents,e) catalysts,f) flameproofing agents, and, if desired,g) further auxiliaries and/or additives,wherein the flameproofing agent is a combination of at least one liquid flameproofing agent which is reactive toward isocyanates and at least one solid flameproofing agent.Type: GrantFiled: October 29, 1997Date of Patent: November 9, 1999Assignee: BASF AktiengesellschaftInventors: Uwe Keppeler, Werner Hinz, Michael Reichelt
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Patent number: 5889071Abstract: A process for the preparation of polyurethane foams by reacting a polyisocyanate composition with an isocyanate-reactive composition under foam-forming conditions, wherein the isocyanate-reactive composition comprises a monofunctional alcohol and an isocyanate-reactive cyclic urea.Type: GrantFiled: July 21, 1997Date of Patent: March 30, 1999Assignee: Imperial Chemical Industries PLCInventors: Guy Jean Leon Biesmans, Els Jeanne Francine Van Isterdael
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Patent number: 5874483Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of a compound having the following formula I: ##STR1## where R.sup.1 is hydrogen or a C1-C4 linear or branched alkyl, hydroxyalkyl or aminoalkyl group;R.sup.2 is hydrogen or a C1-C6 linear or branched alkyl, hydroxyalkyl or aminoalkyl group; andR.sup.3 and R.sup.4 are independently hydrogen or a C1-C10 linear or branched alkyl, hydroxyalkyl or aminoalkyl group which may contain ether functionality.Type: GrantFiled: September 27, 1995Date of Patent: February 23, 1999Assignee: Air Products and Chemicals, Inc.Inventors: Ann Coates Lescher Savoca, Richard Paul Underwood, Richard Van Court Carr, James Stephen Emerick, Mark Leo Listemann
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Patent number: 5874485Abstract: This invention relates to flexible foams and flexible molded foams prepared from an isocyanate component comprising an allophanate-modified diphenylmethane diisocyanate. The present invention also relates to processes for the production of these flexible foams and flexible molded foams.Type: GrantFiled: November 10, 1997Date of Patent: February 23, 1999Assignee: Bayer CorporationInventors: Charles M. Milliren, Sanjeev Madan, William E. Slack, Ronald Zibert, Richard A. Riccitelli, William E. Miller
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Patent number: 5874021Abstract: It is to provide a method for producing a low-fuming rigid polyurethane foam, which is superior in initial activity at low temperature and requires a small amount of a stock liquid.A method for producing a rigid polyurethane foam, which comprises mixing (a) a polyisocyanate component with a polyol component comprising (b) a polyol mixture, (c) a catalyst and (d) a blowing agent, then foaming the mixture;wherein the polyisocyanate component (a) is polymethylenepolyphenyl polyisocyanate or a modified material thereof, the polyol mixture (b) comprises (b-1) an aromatic polyester polyol and (b-2) an aromatic polyether polyol; the catalyst (c) is at least one metallic catalyst; and the blowing agent (d) is an adduct of a primary or secondary amine compound with carbon dioxide.Type: GrantFiled: January 14, 1998Date of Patent: February 23, 1999Assignee: Sumitomo Bayer Urethane Ltd.Inventors: Yasuo Inazawa, Kei Odani
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Patent number: 5872156Abstract: It is to provide a method for producing a low-fuming rigid polyurethane foam, which is superior in initial activity at low temperature and requires a small amount of a stock liquid.A method for producing a rigid polyurethane foam, which comprises mixing (a) a polyisocyanate component with a polyol component comprising (b) a polyol mixture, (c) a catalyst and (d) a blowing agent, then foaming the mixture;wherein the polyisocyanate component (a) is polymethylenepolyphenyl polyisocyanate or a modified material thereof; the polyol mixture (b) comprises (b-1) an aromatic polyester polyol and (b-2) an aromatic polyether polyol; the catalyst (c) is at least one metallic catalyst; and the blowing agent (d) is an adduct of a primary or secondary amine compound with carbon dioxide.Type: GrantFiled: August 13, 1998Date of Patent: February 16, 1999Assignee: Sumitomo Bayer Urethane Ltd.Inventors: Yasuo Inazawa, Kei Odani
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Patent number: 5854296Abstract: Azeotropic compositions made up of from about 60 to about 78% by weight of 1,1,1,3,3-pentafluoropropane and from about 22 to about 40% by weight of tetramethylsilane have been found to be particularly useful as blowing agents for the production of polyurethane foams.Type: GrantFiled: September 19, 1997Date of Patent: December 29, 1998Assignee: Bayer CorporationInventors: Joachim Werner, Scott A. Kane, Charles E. Mortimer, Herman P. Doerge, Eric F. Boonstra
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Patent number: 5840779Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which result in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and at least one catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is less volatile than N,N-dimethylcyclohexylamine or the catalyst is a tertiary amine having at least one isocyanate-reactive functionality selected from the group consisting of --OH and --NH-- and the catalyst results in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol and especially during use of the foam samples at a temperature of at least about 54.degree. C.Type: GrantFiled: June 7, 1995Date of Patent: November 24, 1998Assignee: AlliedSignal Inc.Inventors: Robert Christian Parker, Timothy Rech Demmin
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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: 5786405Abstract: Clear, amine-initiated polyether polyols are made by epoxidizing an amine in the presence of an alkali metal hydroxide catalyst. After the desired degree of epoxidation has been achieved, a hydroxy-carboxylic acid is added to the epoxidized mixture in an amount sufficient to neutralize any remaining alkali metal hydroxide. The polyols produced in this manner are particularly useful for the production of polyurethane and apolyisocyanurate foams.Type: GrantFiled: November 1, 1996Date of Patent: July 28, 1998Assignee: Bayer CorporationInventors: Steven L. Schilling, Herman P. Doerge, Lotar H. Hanusa
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Patent number: 5776992Abstract: The invention relates to a halogen-free, flame retardant rigid polyurethane foam based on polyether-polyols and polyisocyanates, which comprises, as the polyol component, mixtures of nitrogen-free and nitrogen-containing polyether-polyols and, as the flameproofing agent, ammonium polyphosphate.Type: GrantFiled: August 11, 1997Date of Patent: July 7, 1998Assignee: Hoechst AktiengesellschaftInventors: Siegfried Jung, Horst Staendeke
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Patent number: 5710232Abstract: Compounds having the formulaH--A--(BA).sub.n --OHwhereinn is 1-20;A is ##STR1## B is ##STR2## R.sub.1 is alkyl having 1-6 carbon atoms; R.sub.2 is an alkylene having 1-6 carbon atoms, alkenylene having 2-6 carbon atoms, cyclo-alkylene or cycloalkenylene having 5-8 carbon atoms or phenylene having 6-10 carbon atoms;a is 1-6; andb is 2-6.These compounds are useful for making polyurethanes.Type: GrantFiled: February 15, 1996Date of Patent: January 20, 1998Assignee: Imperial Chemical Industries PLCInventors: Steve Carter, Christopher Phanopoulos
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Patent number: 5710191Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition comprising at least one compound of either of the following formulas IA and IB: ##STR1## where R is hydrogen, methyl or hydroxymethyl. The preferred catalysts comprise 3-hydroxymethyl quinuclidine, 3-methyl-3-hydroxymethyl quinuclidine and 4-hydroxymethyl quinuclidine.Type: GrantFiled: May 21, 1996Date of Patent: January 20, 1998Assignee: Air Products and Chemicals, Inc.Inventors: Mark Leo Listemann, Kristen Elaine Minnich, Brian Eugene Farrell, Lisa Ann Mercando, Michael John Kimock, James Dudley Nichols
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Patent number: 5703136Abstract: A method for the preparation of rigid foams by reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promoter characterized in that the isocyanate-reactive material comprises at least one isocyanate-reactive cyclic carbonate or isocyanate-reactive cyclic urea, the reaction being performed in the presence of an inert insoluble organic liquid which is present as the disperse phase of an emulsion or a microemulsion, and in the presence of a metal salt catalyst.Type: GrantFiled: March 19, 1993Date of Patent: December 30, 1997Assignee: Imperial Chemical Industries plcInventors: Herbert Russell Gillis, Dirk Stanssens, Rik De Vos, Aaldrik Roelf Postema, David Randall
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Patent number: 5700847Abstract: Isocyanate-terminated-prepolymers prepared from polyoxyalkylene polyether polyols having low unsaturation are suitable for producing polyurethane molded foam having exceptional physical properties. Preferably, the foams are all water blown, and process well. The foams are noted for concomitant increases in both tensile strength and elongation as well as displaying excellent wet set and other properties.Type: GrantFiled: December 4, 1995Date of Patent: December 23, 1997Assignee: Arco Chemical Technology, L.P.Inventor: Andrew M. Thompson
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Patent number: 5693682Abstract: A polyurethane foam essentially free of organic carbon-based blowing agent, the polyurethane foam comprising a foam core having a density of from about 5 to about 45 pounds per cubic foot and an integral skin consisting of substantially non-cellular, non-porous polyurethane. The presence of the integral skin is characterized by a compression force deflection index of at least about 1.20, the compression force deflection index being defined as the ratio of (i) the compression force deflection orthogonal to a cross-section of the foam to (ii) the compression force deflection of the foam core, the compression force deflection measured according to ASTM 3574C. In a preferred embodiment, the present polyurethane foam is further characterized by a flexural modulus index of at about 1.60. In another preferred embodiment, the present invention is characterized by a density index of at least about 1.60.Type: GrantFiled: February 20, 1996Date of Patent: December 2, 1997Assignee: Woodbridge Foam CorporationInventors: Edward T. Kuczynski, William M. Bayko
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Patent number: 5693686Abstract: A polyisocyanate having an acid value of at least 0.01% HCl is used to produce polyisocyanate, polyisocyanurate and polyurethane urea foams with an HCFC blowing agent. The use of such a polyisocyanate is advantageous because the polyisocyanate does not cause significant decomposition of the HCFC blowing agent.Type: GrantFiled: February 10, 1994Date of Patent: December 2, 1997Assignee: Bayer CorporationInventors: John F. Szabat, Charles E. Mortimer, Joseph M. Sutej, Jeanne L. Beaumont, Steven L. Schilling, Harold R. Parsons, Robert P. Yeater
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Patent number: 5688834Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which result in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and at least one catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is less volatile than N,N-dimethylcyclohexylamine or the catalyst is a tertiary amine having at least one isocyanate-reactive functionality selected from the group consisting of --OH and --NH-- and the catalyst results in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol and especially during use of the foam samples at a temperature of at least about 54.degree. C.Type: GrantFiled: October 15, 1991Date of Patent: November 18, 1997Assignee: AlliedSignal, Inc.Inventors: Robert Christian Parker, Timothy Rech Demmin
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Patent number: 5681915Abstract: The use of polyol derivatives with at least two alcoholic hydroxy groups and at least one fatty acid residue per molecule obtainable by reacting a starting polyol with a fatty acid or a fatty acid derivative, which can be obtained by using as a starting polyol diethanolamine, triethanolamine, diisopropanolamine, triisopropanolamine, dibutanolamine, and reaction products of ethylene oxide and/or propylene oxide with ethanolamine, isopropanolamine, butanolamine, or primary or secondary, aliphatic or aromatic amines, as internal lubricants and/or polyol with internal lubricant properties in the production of molded polyurethane parts is described. In this manner a much more uniform distribution of the internal mold lubricant and thus an increase in the ductility of the reaction mixture can be achieved, and even crosslinked polyurethane profiles can be produced by extrusion.Type: GrantFiled: September 27, 1995Date of Patent: October 28, 1997Inventors: Josef Lechner, Karl Lechner
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Patent number: 5654345Abstract: The invention forms in situ carbon dioxide blown closed cell insulating foams in which blowing is achieved by the evolution of carbon dioxide resulting from partial hydrolysis of polyisocyanate (methyl diphenyl diisocyanate) by water in the resole. The invention uses no additional blowing agent. The reaction is fast and the resulting product has small, closed cells that exhibit long term thermal performance.Type: GrantFiled: July 12, 1995Date of Patent: August 5, 1997Assignee: Owens-Corning Fiberglas Technology, Inc.Inventors: Vyacheslav S. Grinshpun, Byron Jeffrey Hulls
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Patent number: 5618854Abstract: Disclosed is an active hydrogen-containing composition suitable for the production of flexible polyurethane foam when reacted with a polyisocyanate, said composition comprising,(a) a polyol having an average functionality of about 2.0 to about 4.0, and an equivalent weight in the range of from about 500 to about 5000;(b) from about 0.5 to about 5 parts, per 100 parts by weight of component (a), of a crosslinker selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, methylene bis(o-chloroaniline) and mixtures thereof; and(c) from about 0.3 to about 15 parts per 100 parts by weight of component (a), of a compound having at least 3 hydroxyl groups, at least two of which are secondary hydroxyl groups; and an equivalent weight of less than about 500;as well as flexible polyurethane foams prepared therefrom.Type: GrantFiled: February 16, 1995Date of Patent: April 8, 1997Assignee: The Dow Chemical CompanyInventors: Richard G. Skorpenske, Alan K. Schrock
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Patent number: 5616677Abstract: This invention discloses an aliphatic spray polyurea elastomer comprising an (A) component that includes an aliphatic isocyanate and a (B) component that includes (1) an amine-terminated polyoxyalkylene polyol and (2) a cycloaliphatic diamine chain extender, wherein between about 20% to about 80% of the primary amines have been converted into secondary amines.Type: GrantFiled: December 27, 1995Date of Patent: April 1, 1997Assignee: Huntsman Petrochemical CorporationInventors: Dudley J. Primeaux, II, Robert L. Zimmerman
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Patent number: 5616626Abstract: Provided is a composition for making a foam including a reactive phenolic resin, urea, and an isocyanate. Also provided is a method for making the foam and a foam made from the composition.Type: GrantFiled: December 12, 1995Date of Patent: April 1, 1997Assignee: Jiffy Foam, Inc.Inventor: Samuel L. Rader
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Patent number: 5616628Abstract: Polyurethanes and/or polyurethane ureas which are optionally cellular are produced by the process of the present invention. This process consists of reacting at least one polyisocyanate with a specific reaction mixture. This reaction mixture containsA) non-basic compounds having a molecular weight of 62 to 10,000 and containing at least two hydroxyl groups;andB) at least one component selected from:B)1) basic polyhydroxyl compoundsandB)2) acids or the salts thereof;andC) at least one component selected from:C)1) fatty acidsandC)2) the salts of the fatty acids.The reaction occurs at temperatures of from 0.degree. to 150.degree. C., and component A) is used as an at least 50 wt. % aqueous solution.Type: GrantFiled: March 13, 1996Date of Patent: April 1, 1997Assignee: Bayer AktiengesellschaftInventors: Wulf von Bonin, Hanns-Peter Muller, Manfred Kapps
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Patent number: 5602190Abstract: Rigid polyurethane foams are prepared by the reaction of1) polyisocyanates with2) compounds of a molecular weight of from 150 to 1500, having at least two hydrogen atoms active towards isocyanates and which one tertiary nitrogen atom in the molecule, in the presence of3) hydrofluoroalkanes as foaming agents as well as optionally in the presence of4) other auxiliary substances and additives known per se.Type: GrantFiled: January 27, 1995Date of Patent: February 11, 1997Assignees: Bayer Aktiengesellschaft, Bayer CorporationInventors: Wilhelm Lamberts, Norbert Eisen, James Thompson-Colon
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Patent number: 5578656Abstract: A method for the preparation of cellular polymeric products which comprises reacting an organic polyisocyanate with an isocyanate-reactive composition, characterised in that the isocyanate-reactive composition comprises a blowing promoter which is a cyclic urea compound having at least one isocyanate-reactive substituent.Type: GrantFiled: June 24, 1994Date of Patent: November 26, 1996Assignee: Imperial Chemical Industries PLCInventors: Herbert R. Gillis, Aaldrik R. Postema, Dirk Stanssens
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Patent number: 5532283Abstract: 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: GrantFiled: March 24, 1995Date of Patent: July 2, 1996Assignee: Bayer CorporationInventors: Joachim Werner, Scott A. Kane, Eric F. Boonstra, Herman P. Doerge
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Patent number: 5530035Abstract: Closed cell polyurethane foams, useful as thermal insulation for refrigerators and the like, are prepared by blending a polyisocyanate, a polyol and a suspension of at least one solid alkaline reagent, preferably sodium hydroxide, in an inert carrier liquid having a suitable viscosity. Preferred carrier liquids include polyepoxides and polyoxyalkylenediamines. The alkaline reagent reacts with and removes the carbon dioxide employed as a blowing agent, thus decreasing the thermal conductivity of the foam.Type: GrantFiled: June 15, 1994Date of Patent: June 25, 1996Assignee: General Electric CompanyInventors: Monica A. Ferrero-Heredia, James Day, George L. Gaines, Jr.
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Patent number: 5525641Abstract: There is now provided a method for making a polyisocyanate based rigid closed cell foam made by reacting an organic isocyanate with a polyol composition made up of at least:a) an aromatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq polyol/g KOH or more;b) an aliphatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq polyol/g KOH or more in an amount of 10 weight percent or less based on the weight of the polyol composition; andc) cyclopentane,wherein the cyclopentane is dissolved in the polyol composition. The organic isocyanate and the polyol composition are reacted at an isocyanate index ranging from 80 to less than 150, and throughout this isocyanate index range, the resulting foam has a substantially constant k-factor and is dimensionally stable.Type: GrantFiled: November 1, 1995Date of Patent: June 11, 1996Assignee: BASF CorporationInventors: Walter R. White, III, James A. Mullins
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Patent number: 5523334Abstract: There is now provided a polyisocyanate based rigid closed cell foam made by reacting an organic isocyanate with a polyol composition in the presence of a blowing agent, where the polyol composition contains at least:a) an aromatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq polyol/g KOH or more;b) an aliphatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq polyol/g KOH or more;and the blowing agent is at least cyclopentane in an amount of 7 weight percent or more based on the weight of the polyol composition; and further, the cyclopentane blowing agent is soluble in the polyol composition, and the amount of the aliphatic amine initiated polyoxyalkylene polyether polyol is 10 weight percent or less based on the weight of the polyol composition.Type: GrantFiled: November 1, 1995Date of Patent: June 4, 1996Assignee: BASF CorporationInventors: Walter R. White, III, James A. Mullins
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Patent number: 5494942Abstract: Rigid polyurethane foam and laminate articles comprising a facing material and the said polyurethane foam are prepared by contacting under reaction conditions a urethane-modified polyisocyanate with a polyahl in the presence of a blowing agent comprising water. The urethane-modified polyisocyanate has an isocyanate content of from about 10 to about 29 weight percent and is obtained by reacting a polymethylene polyphenylisocyanate with a polyether polyol having a molecular weight of at least 2000 and an oxyethylene content of at least 35 weight percent. Use of this polyisocyanate provides for enhanced adhesion of the resulting foam, especialIy when it is an all-water blown foam, to facing materials such as metal.Type: GrantFiled: December 27, 1993Date of Patent: February 27, 1996Assignee: The Dow Chemical CompanyInventors: Andreas Ottens, Peter Keller, Ulrich Muller
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Patent number: 5489618Abstract: A process for preparing a polyurethane foam according to the one-shot foaming process by reactions between a polyisocyanate and an active hydrogen-containing component including water and an organic polyol wherein said reactions are conducted in the presence of a salt of a tertiary amine and a carboxylic acid having hydroxyl functionality.Type: GrantFiled: November 29, 1993Date of Patent: February 6, 1996Assignee: OSi Specialties, Inc.Inventor: Richard M. Gerkin
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Patent number: 5478494Abstract: A polyol composition is provided which when reacted with an organic isocyanate, has good flow characteristics and makes a rigid polyurethane foam having good dimensional stability at low densities. The polyol compostion has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less 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 a viscosity of 5,000 cp or less at 25.degree. C. The polyol composition also has formic acid or a mixture of formic acid and water as blowing agents, and further contains a delayed action blow catalyst and a delayed action gel catalyst.Type: GrantFiled: September 22, 1993Date of Patent: December 26, 1995Assignee: BASF CorporationInventors: Thomas B. Lee, Thomas L. Fishback, Curtis J. Reichel, Donald L. Christman