Cellular Polymer Containing An Isocyanurate Structure Patents (Class 521/902)
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Patent number: 11932800Abstract: A composite foam is provided having silica aerogel particles dispersed in a closed cell polymeric foam. The silica aerogel particles are included in a volume fraction between 2 and 60%, and the composite foam has a thermal conductivity of 40 mW/m?K or less and a density of 60 kg/m3 or less. In another embodiment, a composite foam is provided having a perforated closed cell polymeric foam and 2-60% hydrophobic silica aerogel particles by volume with a particle size distribution of 1 to 50 ?m, where the composite foam has a thermal conductivity of 30 mW/m?K or less, a density of 20-45 kg/m3, and an air permeability of 20-40 cubic feet per minute.Type: GrantFiled: August 31, 2020Date of Patent: March 19, 2024Assignee: LUKLA INC.Inventors: Jeffrey Nash, Michael Glenn Markesbery, Rithvik Venna
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Patent number: 11913563Abstract: Disclosed herein is a temperature actuated valve, including a stationary member and a movable member, wherein the stationary member is configured to receive the movable member. A first flow path is defined between an outer surface of the stationary member and an inner surface of a housing and a second flow path defined by and within the movable member. The temperature actuated valve further includes at least one temperature actuated member having a first end seated against a base of the stationary member and a second end seated against a base of the movable member. The temperature actuated valve further includes a bias member having a first end connected to the base of the stationary member and a second end connected to the base of the movable member, the at least one temperature actuated member configured to compress at a first temperature and expand at a second temperature.Type: GrantFiled: December 30, 2021Date of Patent: February 27, 2024Assignee: Applied Materials, Inc.Inventors: Shivaram Chandrashekar, Pallab Karmakar, Amit Sahu, Kumaresan Nagarajan, Giridhar Kamesh
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Patent number: 11718703Abstract: A rigid foam or composition allowing a rigid foam to be obtained made from polyurethane and/or polyisocyanurate. The rigid foam or composition includes polyols selected from polyester polyols and polyether polyols; the polyols include: 5 to 50% of a polyester polyol A by weight relative to the total weight of the polyols; and a polyol B selected from polyester polyols B and polyether polyols B. The polyester polyol A is of general formula Rx-Ry-Z-Ry?-Rx? in which Z is a C3 to C8 alcohol sugar chosen from glycerol, sorbitol, erythritol, xylitol, araditol, ribitol, dulcitol, mannitol and volemitol. Ry and Ry? are diesters of formula —OOC—Cn-COO— in which n is between 2 and 34, and Rx and Rx? are identical or different C2 to C12 monoalcohols.Type: GrantFiled: January 22, 2019Date of Patent: August 8, 2023Assignees: TEREOS STARCH & SWEETENERS BELGIUM, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, SOPREMA, UNIVERSITE DE STRASBOURGInventors: Pierre Etienne Bindschendler, Alexandru Sarbu, Rémi Perrin, Pierre Furtwengler, Luc Avérous, Andréas Redl
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Patent number: 11702499Abstract: A method of making an isocyanurate polymer is disclosed. An isocyanate including at least one of an aromatic isocyanate and an aliphatic isocyanate is provided. A trimerization catalyst including at least one of an amine catalyst, an organometallic compound, and an imidazole compound is provided. A reaction mixture that is substantially free of reactive hydrogen is formed by mixing less than about twenty percent by total weight of said reaction mixture of an epoxide with said isocyanate. The trimerization catalyst is mixed with the reaction mixture. The reaction mixture is cured to produce a polymer composition including a reaction product of two or more isocyanates.Type: GrantFiled: November 22, 2021Date of Patent: July 18, 2023Assignee: TRIMER TECHNOLOGIES LLCInventor: Henry A. Sodano
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Patent number: 8916620Abstract: A method for improving the thermal stability of polyurethane-modified polyisocyanurate (PU-PIR) foams is provided. Moreover, a process for producing the PU-PIR foams exhibiting improved thermal stability is provided. The foams have incorporated therein a high molecular weight ammonium polyphosphate (APP). APP is employed as a partial or complete substitute for flame retardants conventionally employed in PU-PIR foams. The foams of the invention exhibit excellent and improved thermal stability characteristics as compared to foams to which no APP has been added.Type: GrantFiled: August 21, 2012Date of Patent: December 23, 2014Assignee: Stepan CompanyInventors: Warren A. Kaplan, Angelo R. Gabbianelli, David J. Norberg
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Patent number: 8481606Abstract: The invention relates to the production and use of polyester polyols, formed from at least one carboxylic acid anhydride and ethylene glycol, wherein a specialized reaction control substantially suppresses the formation of 1,4-dioxane from diethylene glycol.Type: GrantFiled: October 24, 2009Date of Patent: July 9, 2013Assignee: Bayer MaterialScience AGInventors: Hartmut Nefzger, Erika Bauer, Johannes Van de Braak, Jürgen Schloβmacher
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Patent number: 8106106Abstract: A method for producing polyisocyanurate insulation foams, the method comprising contacting an A-side stream of reactants that includes an isocyanate with a B-side stream of reactants that include a polyol and a blowing agent, where the blowing agent includes isopentane and n-pentane in a substantial absence of cyclopentane.Type: GrantFiled: September 24, 2010Date of Patent: January 31, 2012Assignee: Firestone Building Products Company, LLCInventor: John B. Letts
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Patent number: 7612120Abstract: A method for producing polyisocyanurate insulation foams, the method comprising contacting an A-side stream of reactants that includes an isocyanate with a B-side stream of reactants that include a polyol and a blowing agent, where the blowing agent includes isopentane and n-pentane in a substantial absence of cyclopentane.Type: GrantFiled: August 13, 2003Date of Patent: November 3, 2009Inventor: John B. Letts
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Patent number: 7473716Abstract: Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.Type: GrantFiled: February 21, 2003Date of Patent: January 6, 2009Assignee: Honeywell International Inc.Inventors: Hilde Lund, legal representative, Robert Christian Parker, Ian Robert Shankland, Earl August Eugene Lund
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Patent number: 7205374Abstract: A method of preparing an adhesive, the method comprising combining an isocyanate, a polyhydroxyl phenol-containing compound, a polyol, and a trimerization catalyst.Type: GrantFiled: October 10, 2003Date of Patent: April 17, 2007Assignee: BFS Diversified Products, LLCInventors: John W. Fieldhouse, Joseph J. Kalwara, Edward G. Kane, John B. Letts
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Patent number: 7160930Abstract: A composition and a method for producing primarily water blown polyurethane foams is provided. The composition uses isocyanate ratios greater than conventional foam system to provide a water blown polyurethane foam suitable for a wide variety of applications including spray roofing, insulation, etc. The preferred composition for preparing a polyurethane foam comprises an isocyanate component and a polyol component, wherein the polyol component preferably comprises a combination of Mannich polyol, polyester polyol, and polyether polyol. Preferably, the composition includes water to act as a blowing agent and a metal salt catalyst to assist in the reaction. Preferably, the isocyanate index is between about 1.2 and about 2.0. Additional catalysts, surfactants, flame retardants, and blowing agents may also be used depending upon the desired finished product.Type: GrantFiled: July 14, 2004Date of Patent: January 9, 2007Assignee: Baysystems North America LLCInventors: Thomas A. Sparks, Philip D. Harkins, Ray J. Anderson
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Patent number: 6586488Abstract: Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.Type: GrantFiled: June 10, 1997Date of Patent: July 1, 2003Assignee: AlliedSignal Inc.Inventor: Ian Robert Shankland
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Patent number: 6541530Abstract: A urethane-modified polyisocyanurate foam obtained by reacting (A) a polyisocyanate compound component, (B) a polyol component, containing a modified phenolic resin obtained by adding 20 to 100 parts by weight of a polyhydric alcohol or its alkylene oxide adduct to 100 parts by weight of a benzylic ether type phenolic resin and heating under a reduced pressure, in an amount of at least 3 wt % to the total resin component, (C) water and (D) a foam stabilizer comprising a mixture of at least 2 silicone type surfactants having different surface tensions wherein a surfactant having a higher surface tension has a surface tension of higher than 22 dyne/cm and a surfactant having a lower surface tension has a surface tension of at most 22 dyne/cm, in the presence of (E) a urethane-forming catalyst and/or a trimerization catalyst.Type: GrantFiled: November 27, 2001Date of Patent: April 1, 2003Assignee: Hodogaya Chemical Co., Ltd.Inventors: Tsuyoshi Sato, Tsutomu Nakamura
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Patent number: 6455605Abstract: The invention relates to a foamable composition comprising at least two parts. The first part comprises a polyol, a thixotropic gelling agent, a blowing agent, a urethane reaction catalyst and a isocyanurate reaction catalyst. The second part comprises at least one isocyanate. A foam mass can be prepared by combining the first part polyol component with the second part isocyanate component. The composition is foamable under water and exhibits, upon foaming under water, substantially the same wet foam density and dry foam density. The invention also relates to a method of repairing or reinforcing structural members having defects such as spike holes left after spike removal from railroad ties during road bed maintenance or repair by means of the foamable composition.Type: GrantFiled: April 24, 2001Date of Patent: September 24, 2002Assignee: H. B. Fuller Licensing & Financing Inc.Inventors: Albert M. Giorgini, James A. Hagquist
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Patent number: 6423757Abstract: The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: CxFyHz, wherein x is 3, 4, 5, or 6 and y and z are each independently 1 or a positive whole number such that the result of y/(y+z) is greater than 0.67.Type: GrantFiled: August 31, 1998Date of Patent: July 23, 2002Assignee: Electric Power Research Institute, Inc.Inventors: David P. Wilson, Rajiv R. Singh, Rajat S. Basu, Ellen L. Swan, David Nalewajek
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Publication number: 20010014703Abstract: Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foams comprising the step of reacting an organic polyisocyanate with a polyfunctional isocyanate-reactive component in the presence of a blowing agent mixture comprising from 50 to 90% by weight of cyclopentane and from 10 to 50% by weight of a mixture comprising isopentane and/or n-pentane and isobutane and/or n-butane wherein the weight ratio of isopentane and/or n-pentane over isobutane and/or n-butane is between 5/95 and 95/5.Type: ApplicationFiled: February 22, 1999Publication date: August 16, 2001Inventors: RIK DE VOS, WALTER BAZZO, GUY LEON JEAN GHISLAIN BIESMANS, LUC FERDINAND LEON COLMAN
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Publication number: 20010003758Abstract: Rigid isocyanurate-modified polyurethane foams of index 180 to 380 made from a combination of aliphatic and aromatic polyester polyols.Type: ApplicationFiled: June 10, 1997Publication date: June 14, 2001Inventors: VITTORIO BONAPERSONA, CRISTINA JAVARONE, FRANCO MAGNANI
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Patent number: 6156814Abstract: The use of 3-[3-(dimethylamino)propyl]-propionamide (Formula I) and 3,3'-{[3-(dimethylamino)propyl]imino}bis-propanamide (Formula II) as catalysts in the production of polyurethanes.Type: GrantFiled: March 26, 1999Date of Patent: December 5, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Ning Chen, Richard Van Court Carr, Mark Leo Listemann, Richard Paul Underwood
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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: 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: 5847014Abstract: The present invention is directed to an isocyanate reactive mixture comprising from about 17 to about 85% by weight of one or more non-filled polyether polyols having a hydroxyl functionality of from 1.5 to 3 and molecular weights of from 1,500 to 8,000; from about 12 to about 80% by weight of one or more non-tertiary amine containing polyether polyols having a hydroxyl functionality of from 3 to 8 and a molecular weight of from 150 to 1,000; from about 0 to about 4% by weight of one or more primary or secondary diamines or amino alcohols and from 3 to about 12% by weight of water. The invention is also directed to a water-blown, energy absorbing foams made from the isocyanate reactive mixture.Type: GrantFiled: April 15, 1997Date of Patent: December 8, 1998Assignee: Bayer CorporationInventors: Neil H. Nodelman, David D. Steppan, Mark A. Davolio, David F. Sounik, Alan D. Bushmire
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Patent number: 5844014Abstract: Disclosed is a compressed, evacuated, open-cell polymer foam, the foam having an open cell content of about 70 percent or more prior to compression, the foam having a thickness of about 40 to about 90 percent of the initial thickness of the foam prior to compression, the foam having an absolute cell gas pressure of about 10 torr or less in its open cells, the foam having a density of about 16 to about 250 kilograms per cubic meter. Further disclosed is an evacuated insulation panel employing the foam.Type: GrantFiled: March 31, 1997Date of Patent: December 1, 1998Assignee: The Dow Chemical CompanyInventor: Bruce A. Malone
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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: 5824711Abstract: 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 the compound represented by the following formula I or II, or any blend of I and II.Type: GrantFiled: May 6, 1997Date of Patent: October 20, 1998Assignee: Air Products and Chemicals, Inc.Inventors: Michael John Kimock, Mark Leo Listemann
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Patent number: 5800729Abstract: The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: C.sub.x F.sub.y H.sub.z, wherein x is 3, 4, 5, or 6 and y and z are each independently 1 or a positive whole number such that the result of y/(y+z) is greater than 0.67.Type: GrantFiled: July 25, 1996Date of Patent: September 1, 1998Assignee: Electric Power ResearchInventors: David P. Wilson, Rajiv R. Singh, Rajat S. Basu, Ellen L. Swan, David Nalewajek
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Patent number: 5760097Abstract: The present invention relates to porous crosslinked polymeric microbeads having cavities joined by interconnecting pores wherein at least some of the cavities at the interior of each microbead communicate with the surface of the microbead. The present invention also relates to a process for producing a porous, crosslinked polymeric microbead as well as the product of this process. This process involves combining an oil phase with an aqueous discontinuous phase to form an emulsion, adding the emulsion to an aqueous suspension medium to form an oil-in-water suspension of dispersed emulsion droplets, and polymerizing the emulsion droplets to form microbeads. At least 10% of the microbeads produced in accordance with the present invention are substantially spherical or substantially ellipsoidal or a combination of the two.Type: GrantFiled: April 10, 1996Date of Patent: June 2, 1998Assignee: Biopore CorporationInventors: Nai-Hong Li, James R. Benson, Naotaka Kitagawa
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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: 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: 5684057Abstract: 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; andc) an aromatic polyester polyol having an hydroxyl number of 200 meq. polyol/g KOH or more.The blowing agent is selected from the group consisting of cyclopentane, HFC's, HCFC's, and mixtures thereof in an amount of 5.0 weight percent or more based on the weight of the polyol composition. Preferably, the blowing agent is soluble in the polyol composition without sacrificing, and advantageously improving, the thermal insulation and dimensional stability of the resulting polyurethane foam.Type: GrantFiled: November 26, 1996Date of Patent: November 4, 1997Assignee: BASF CorporationInventors: Walter R. White, III, James A. Mullins, Thomas B. Lee, Keith McLellan, Ronald J. Wierzbicki
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Patent number: 5679718Abstract: Disclosed is an evacuated and unevacuated microcellular foam containing an infrared attenuating agent (IAA). The evacuated foam has an average cell size of about 70 micrometers or less. The unevacuated foam has an average cell size of 1.0 micrometers or less. The IAA provide a greater proportional reduction in foam thermal conductivity in these foams than in foams of larger cell size. Further disclosed is a method of using the foams.Type: GrantFiled: June 2, 1995Date of Patent: October 21, 1997Assignee: The Dow Chemical CompanyInventors: Kyung W. Suh, Michio Yamada, Creston D. Shmidt, Daniel D. Imeokparia
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Patent number: 5677358Abstract: Azeotrope-like compositions of 1, 1, 1, 3, 3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.Type: GrantFiled: October 7, 1996Date of Patent: October 14, 1997Assignee: AlliedSignal Inc.Inventors: Earl August Eugene Lund, deceased, Robert Christian Parker, Ian Robert Shankland
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Patent number: 5677359Abstract: 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; andc) an aromatic polyester polyol having an hydroxyl number of 200 meq. polyol/g KOH or more.The blowing agent is selected from the group consisting of cyclopentane, HFC's, HCFC's, and mixtures thereof in an amount of 5.0 weight percent or more based on the weight of the polyol composition. Preferably, the blowing agent is soluble in the polyol composition without sacrificing, and advantageously improving, the thermal insulation and dimensional stability of the resulting polyurethane foam.Type: GrantFiled: November 26, 1996Date of Patent: October 14, 1997Assignee: BASF CorporationInventors: Walter R. White, III, James A. Mullins, Thomas B. Lee, Keith McLellan, Ronald J. Wierzbicki
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Patent number: 5646196Abstract: Polyfluoroalkanes are used as propellants in sprayable compositions or in the the preparation of plastic foams and in the electrical industry as cleansing and degreasing agents.Type: GrantFiled: January 26, 1996Date of Patent: July 8, 1997Assignee: Bayer AktiengesellschaftInventors: Claus-Dieter Sommerfeld, Wilhelm Lamberts, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele
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Patent number: 5645928Abstract: Heat insulation panels made from plates and the modified polyisocyanurate foams provided by a reaction of a polyisocyanate with a polyol composition mixture comprising a polyol, water, a trimerization catalyst, a carbodiimide catalyst, and an aromatic compound used as a chain extender. An amount of the aromatic compound used in the preparation is 0.5 to 10.0% by weight with respect to a total weight of the polyisocyanate and the polyol mixture.Type: GrantFiled: June 22, 1995Date of Patent: July 8, 1997Assignees: Daido Steel Sheet Corporation, Nisshinbo IndustriesInventors: Morihiro Matsumoto, Noboru Yoshida, Kiyotake Morimoto, Satoshi Nakamura
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Patent number: 5627220Abstract: A process of the preparation of the modified polyisocyanurate foams provided by a reaction of a polyisocyanate with a polyol composition mixture comprising a polyol, water, a trimerization catalyst, a carbodiimide catalyst, and an aromatic compound used as a chain extender. An amount of the aromatic compound used in the preparation is 0.5 to 10.0% by weight with respect to a total weight of the polyisocyanate and the polyol mixture.Type: GrantFiled: June 22, 1995Date of Patent: May 6, 1997Assignees: Daido Steel Sheet Corporation, Nisshinbo Industries, Inc.Inventors: Morihiro Matsumoto, Noboru Yoshida, Kiyotake Morimoto, Satoshi Nakamura
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Patent number: 5624970Abstract: Polyfluoroalkanes are used as propellants in sprayable compositions or in the preparation of plastic foams and in the electrical industry as cleansing and degreasing agents.Type: GrantFiled: January 26, 1996Date of Patent: April 29, 1997Assignee: Bayer AktiengesellschaftInventors: Claus-Dieter Sommerfeld, Wilhelm Lamberts, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele
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Patent number: 5562857Abstract: Azeotropic compositions made up of from about 65 to about 81% by weight of 1,1,1,3,3-pentafluoropropane and from about 19 to about 35% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.Type: GrantFiled: December 22, 1995Date of Patent: October 8, 1996Assignee: Bayer CorporationInventors: Joachim Werner, Scott A. Kane, Charles E. Mortimer, Herman P. Doerge, Eric F. Boonstra
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Patent number: 5563180Abstract: Rigid, closed cell polyisocyanurate foams are prepared by reacting together a polyisocyanate and a polyester polyol or a mixture of a polyester polyol and at least one other isocyanate-reactive compound in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent and (b) a catalyst mixture comprising (i) a carboxylate salt of an alkali metal or an alkaline earth metal or mixtures thereof, (ii) a quaternary ammonium carboxylate salt, and (iii) optionally a tertiary amine, wherein the mole ratio of carboxylate metal salt: tertiary amine is a value greater than about 2:1, and the total moles of quaternary ammonium carboxylate salt are less than the combined moles of the carboxylate metal salt and the tertiary amine.Type: GrantFiled: July 10, 1995Date of Patent: October 8, 1996Assignee: The Celotex CorporationInventors: Michael J. Skowronski, Kenneth G. Trout
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Patent number: 5561171Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which are capable of decreasing the 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 catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol.Type: GrantFiled: November 23, 1994Date of Patent: October 1, 1996Assignee: AlliedSignal, Inc.Inventors: Timothy R. Demmin, Robert C. Parker, Richard E. Eibeck, Gary M. Knopeck, Donna M. Ruszaj
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Patent number: 5550168Abstract: A modified polyisocyanurate foam is produced by reacting an organic polyisocyanate, a polyol and water in the presence of three catalyst, i.e. two particular trimerization catalysts and a carbodiimidation catalyst. There can be produced, without using any evaporating type blowing agent, a modified polyisocyanurate foam which is suitably used for continuous production of laminate boards, siding boards, insulation boards, etc.Type: GrantFiled: June 20, 1994Date of Patent: August 27, 1996Assignee: Nisshinbo Industries, Inc.Inventors: Satoshi Nakamura, Hirokatsu Shirahata
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Polymer foams with inherent nonflammability and thermal stability and methods of preparation thereof
Patent number: 5514726Abstract: Polymeric foams with novel chemical compositions are prepared by the condensation of specially-synthesized precursors, which contain (in addition to carbon and hydrogen) one or more of the following elements: oxygen, fluorine, nitrogen (in structures with stable chemical bonds), silicon, boron, phosphorus (in high oxidation states), and certain metals (and/or their oxides and hydroxides). Upon mixing in the proper proportions and/or heating these precursors react rapidly to generate polymeric networks, consisting of heterocyclic crosslink centers, connected with heterochain segments; hydrogen is largely eliminated or replaced by fluorine. These structures possess inherent nonflammability and high thermoxidative stability. Foaming is effected by the gaseous by-products of the condensation reactions, as well as by the addition of foaming agents. The resulting foam products can be formulated to have a wide range of densities and flexibilities.Type: GrantFiled: September 15, 1992Date of Patent: May 7, 1996Inventors: Gus Nichols, C. D. Armeniades -
Hydroxy and amino functional pyrrolizidine catalyst compositions for the production of polyurethanes
Patent number: 5512603Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, cell stabilizer and a catalyst composition consisting essentially of a pyrrolizidine of the formula: ##STR1## where R.sub.1 and R.sub.2 independently are --H, --OH, ##STR2## or --NR.sub.4 R.sub.5, R.sub.3 is hydrogen, a C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl, or C.sub.7 -C.sub.11 arylalkyl group, andR.sub.4 and R.sub.5 independently represent H, a C.sub.1 -C.sub.12 alkyl group, C.sub.5 -C.sub.10 cycloalkyl, C.sub.6 -C.sub.10 aryl, or C.sub.7 -C.sub.11 arylalkyl group, provided that at least R.sub.1 or R.sub.2 is not hydrogen.Type: GrantFiled: February 22, 1994Date of Patent: April 30, 1996Assignee: Air Products and Chemicals, Inc.Inventors: Richard V. C. Carr, Kevin R. Lassila, Mark L. Listemann, Lisa A. Mercando, Kristen E. Minnich, Ann C. L. Savoca, Amy L. Wressell -
Patent number: 5496866Abstract: Polyfluoroalkanes are used as propellants in sprayable compositions or in the the preparation of plastic foams and in the electrical industry as cleansing and degreasing agents.Type: GrantFiled: January 24, 1990Date of Patent: March 5, 1996Assignee: Bayer AktiengesellschaftInventors: Claus-Dieter Sommerfeld, Wilhelm Lamberts, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele
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Patent number: 5496867Abstract: Polyfluoroalkanes are used as propellants in sprayable compositions or in the the preparation of plastic foams and in the electrical industry as cleansing and degreasing agents.Type: GrantFiled: November 30, 1992Date of Patent: March 5, 1996Assignee: Bayer AktiengesellschaftInventors: Calus-Dieter Sommerfeld, Wilhelm Lamberts, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele
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Patent number: 5491174Abstract: Novel catalyst compositions comprising complexes of tin(IV) salts and amine compounds are used to prepare polyurethanes, polyureas, polycarbodiimides and polyisocyanurates. The complexes, which preferably employ primary amines, allow delay of gelation until they dissociate under certain reaction conditions. The complexes can be prepared neat or in situ in an active hydrogen containing formulation component. The complexes serve to delay gelation of the formulation because they can be prepared to be relatively stable to moisture and will predictably dissociate upon heating, either as a result of the exothermic nature of the reaction being catalyzed or with application of an external heat source. The catalyst compositions are particularly useful for preparation of carpet underlay and in other applications requiring significant delay prior to gelation.Type: GrantFiled: April 7, 1995Date of Patent: February 13, 1996Assignee: The Dow Chemical CompanyInventors: Laura A. Grier, Paul L. Neill, Ralph D. Priester, Larry W. Mobley, Kenneth W. Skaggs, Robert B. Turner
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Patent number: 5472988Abstract: A process for producing polyisocyanurate foam which comprises reacting an organic polyisocyanate with a polyol and water in the presence of a halogen-free aliphatic phosphoric ester having a molecular weight of 140 to 270 and a trimerization catalyst. Polyisocyanurate foams having good adhesion to membrane such as paper, iron, aluminium, plywood and the like can be obtained without use of an volatile blowing agent such as CFCs, HCFCs and HFCs and even at low density according to the present process.Type: GrantFiled: August 9, 1994Date of Patent: December 5, 1995Assignee: Nisshinbo Industries, Inc.Inventors: Satoshi Nakamura, Hirokatsu Shirahata
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Patent number: 5459171Abstract: Compounds of the general formula ##STR1## in which n represents an integer from 2 to 6, preferably 2 or 3,m represents an integer from 1 to 6, preferably 1 to 3,R represents --C(CH.sub.3).sub.3 andX represents hydrogen or the group ##STR2## are used as core discoloration preventing agents in a process for the production of isocyanate-based foams.Type: GrantFiled: December 15, 1994Date of Patent: October 17, 1995Assignee: Bayer AktiengesellschaftInventors: Peter Haas, Sven Meyer-Ahrens, Gundolf Jacobs
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Patent number: 5457138Abstract: A method of producing an open cell rigid polyurethane foam which comprises reacting a polymethylene polyphenylisocyanate prepolymer with a polyol at an NCO/OH equivalent ratio of 1.3 to 3.0 by use of a blowing agent substantially comprising water in the presence of a catalyst, a foam stabilizer and a cell opening agent.Type: GrantFiled: December 11, 1992Date of Patent: October 10, 1995Assignee: Takeda Chemical Industries, Ltd.Inventors: Kiyohiro Yuge, Hitoshi Muramatsu
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Patent number: 5405885Abstract: The invention is a rigid polyurethane foam to which a base stock lubricating oil made of at least 55 weight percent paraffinic carbons and less than 10 weight percent aromatic carbons has been added as a hydrophobic agent protecting the polyurethane foam from reacting with environmental moisture. The foam is useful for deposit in railroad spike holes or any structural member having a cavity and where moisture within or on the cavity would otherwise react with the isocyanate to produce an uncontrollable foaming mass.Type: GrantFiled: April 22, 1992Date of Patent: April 11, 1995Assignee: BASF CorporationInventors: Agus Sampara, Rob Hutchings, Tom Harris, Karl Dondorff, Kerry Bowman
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Patent number: RE38201Abstract: The use of 3-[3-(dimethylamino)propyl]-propionamide (Formula I) and 3,3′-{[3-(dimethylamino)propyl]imino}bis-propanamide (Formula II) as catalysts in the production of polyurethanes. The use of 3-{[3-(dimethylamino)propyl]amino}-propionamide (Formula I) and 3,3′-{[3-(dimethylamino)propyl]imino}bis-propanamide (Formula II) as catalysts in the production of polyurethanes.Type: GrantFiled: March 22, 2002Date of Patent: July 22, 2003Assignee: Air Products and Chemicals, Inc.Inventors: Ning Chen, Richard Van Court Carr, Mark Leo Listemann, Richard Paul Underwood