Ingredient Is A Nitrogen Containing Compound Patents (Class 521/128)
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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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Patent number: 5547996Abstract: Reacting carbonyls, such as aldehydes and ketones, with amines produces a ketimine or aldimine and a water byproduct. When the ketimine or aldimine reaction occurs in a polymer composition, the polymer becomes foamed due to the evolution of water. Hence, carbonyl and amine containing compounds may be introduced into a polymeric composition to serve as an in-situ blowing agent. The carbonyl and amine containing compounds may be different polymers which will be combined through a ketimine or aldimine linkage to form a graft co-polymer, they may be small molecular weight additives that are placed in the composition with a polymer that is to be foamed as a byproduct of a ketimine or aldimine reaction of the additives, or they may be a polymer containing a carbonyl or amine moiety and a small molecular weight additive compound that will react with the moiety on the polymer to form a ketimine or aldimine.Type: GrantFiled: July 29, 1994Date of Patent: August 20, 1996Assignee: The Center for Innovative TechnologyInventors: Donald K. Brandom, Jose P. DeSouza, Donald G. Baird, Garth L. Wilkes
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Patent number: 5539008Abstract: Foamable compositions comprise (a) at least one normally liquid, unsaturated perfluorochemical blowing agent compound selected from the group consisting of perfluoroolefin compounds, e.g., perfluoro(4-methylpent-2-ene), perfluoroaromatic compounds, e.g., hexafluorobenzene, and perfluorocycloolefin compounds, e.g., perfluorocyclohexene, the perfluoroolefin compounds optionally containing one or more catenary heteroatoms; and (b) at least one foamable polymer or the precursors of at least one foamable polymer. The compositions are useful in preparing polymeric, e.g., polyurethane, foams.Type: GrantFiled: December 29, 1993Date of Patent: July 23, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Rudolf J. Dams, Richard M. Flynn, Koen Focquet, John G. Owens
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Patent number: 5539005Abstract: Foamable composition comprising a mixture based on polymer resin and a effective quantity, in relation to the said resin, of blowing agent. The blowing agent comprises at least one .alpha.,.beta.-hydroxolated hydrocarbon azide.Application to the production of articles made of synthetic foam.Type: GrantFiled: April 28, 1995Date of Patent: July 23, 1996Assignee: Cray ValleyInventors: Didier Bedel, Chantal Crozat
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Patent number: 5536757Abstract: A flexible polyurethane foam is made by reacting an isocyanate with a polyol in the presence of a foam-forming agent and a fire-retardant additive. The fire-retardant additive comprises melamine and this is used in conjunction with a polyol which is of the polymer-modified polyol kind, i.e. a polyol containing a polymeric substance such as a dispersed alkanolamine/isocyanate polyaddition product.Type: GrantFiled: December 15, 1994Date of Patent: July 16, 1996Assignee: Hickory Springs Manufacturing CompanyInventor: Graham D. Walmsley
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Patent number: 5529739Abstract: The present invention is directed to an improved internal mold release system for the production of high density molded SRIM parts, i.e. molded parts having a density of from 1.3 to 2.0 g/cc. In particular, the process involves reacting a reaction mixture comprising an organic polyisocyanate and at least one organic compound containing isocyanate-reactive hydrogens in the presence of a catalyst and an internal mold release agent in a closed mold. The internal mold release agent is a compound corresponding to the formula: ##STR1## wherein R.sup.2 represents hydrogen, the group R.sup.5 --NH--CO--, or a C.sub.1 to C.sub.24 alkyl or substituted alkyl group, a C.sub.3 to C.sub.24 cycloalkyl or substituted cycloalkyl group, a C.sub.2 to C.sub.24 alkenyl or substituted alkenyl group, or a C.sub.6 to C.sub.24 aryl or substituted aryl group, andwherein R.sup.1, R.sup.3, R.sup.4 and R.sup.5 may be the same or different and represent a C.sub.1 to C.sub.24 alkyl or substituted alkyl group, a C.sub.3 to C.sub.Type: GrantFiled: November 15, 1994Date of Patent: June 25, 1996Assignee: Bayer CorporationInventors: Erik H. Jonsson, Harald Pielartzik, Kristen L. Parks, Randall C. Rains
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Patent number: 5523332Abstract: There is now provided a polyisocyanate-based foam made by reacting an organic polyisocyanate with a polyol solution containing a C.sub.4 -C.sub.7 aliphatic and/or cycloaliphatic hydrocarbon as a blowing agent. The hydrocarbon blowing agent is soluble in the polyol solution having polyols with polyester linkages by using a reacted or unreacted compatibilizing agent represented by the formula: ##STR1## wherein R.sup.1 is preferentially OH, and R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.Type: GrantFiled: September 5, 1995Date of Patent: June 4, 1996Assignee: Basf CorporationInventors: Thomas L. Fishback, Thomas B. Lee
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Patent number: 5519068Abstract: There is provided a method of producing an open cell rigid polyurethane foam which comprises reacting a specified polyol mixture by use of water as the substantially sole blowing agent without the use of a volatile hlorofluorocarbon as a blowing agent. There is provided a further method of producing an open cell rigid polyurethane foam particularly suitable for use as a shock absorbing material which comprises reacting a specified polyol/monool mixture. Water is used in an amount of 0.5-5.5 parts by weight in relation to 100 parts by weight of the polyol mixture or polyol/monool mixture used.Type: GrantFiled: April 26, 1994Date of Patent: May 21, 1996Assignee: Takeda Chemical Industries, Ltd.Inventors: Kazuo Okada, Yoshihiko Tairaka
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Patent number: 5514725Abstract: 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: June 7, 1995Date of Patent: May 7, 1996Assignee: Jiffy Foam, Inc.Inventor: Samuel L. Rader
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Patent number: 5514722Abstract: The present invention is directed to an underlayment composition for an artificial playing surface comprised of a butadiene rubber, such as polybutadiene or styrene-butadiene that is commercially available as recycled polycord tires that have been granulized. An inorganic-base moisture-retaining agent such as vermiculite or perlite is also included in the composition in addition to a binder comprised of a mixture of isocyanate polyurethane and an inorganic acid. The present invention also provides a method of making the present composition. The method comprises the steps of mixing thoroughly granulized particles of butadiene rubber in a mixing container, mixing an inorganic-based moisture-retaining component with the butadiene rubber, mixing an acid having a pH.ltoreq.3 with the butadiene rubber and the inorganic-based moisture-retaining component, and mixing an isocyanate polyurethane with the butadiene rubber, the inorganic-based moisture-retaining component and the acid.Type: GrantFiled: August 12, 1994Date of Patent: May 7, 1996Assignee: Presidential Sports Systems, Inc.Inventor: Joseph W. Di Geronimo
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Patent number: 5512602Abstract: A process for the preparation of polyurethane foams, preferably semirigid polyurethane foams, having an improved foam structure involves reactinga) organic and/or modified organic polyisocyanates withb) polyhydroxyl compounds containing at least 2 reactive hydrogen atoms andc) crosslinking agents which comprise at least one polyoxyalkylene-polyol having a mean functionality of from 3 to 8 and a hydroxyl number of from 200 to 1300 ppm and a content of alkali metal ions of from 150 to 1200 ppm,in the presence ofd) blowing agents,e) if desired catalysts,f) inorganic and/or organic acids as additives andg) if desired auxiliaries.Type: GrantFiled: March 11, 1994Date of Patent: April 30, 1996Assignee: BASF AktiengesellschaftInventors: Peter Horn, Werner Hinz, Ludwig Jung
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Patent number: 5506278Abstract: A flexible polyurethane foam is made by reacting an isocyanate with a polyol in the presence of a foam-forming agent and a fire-retardant additive. The fire-retardant additive comprises melamine and this is used in conjunction with a polyol which is of the polymer-modified polyol kind, i.e. a polyol containing a polymeric substance such as a dispersed alkanolamine/isocyanate polyaddition product.Type: GrantFiled: December 15, 1994Date of Patent: April 9, 1996Assignee: Hickory Springs Manufacturing CompanyInventor: Graham D. Walmsley
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Patent number: 5504125Abstract: There is now provided a polyisocyanate-based foam made by reacting an organic polyisocyanate with a polyol solution containing a C.sub.4 -C.sub.7 aliphatic and/or cycloaliphatic hydrocarbon as a blowing agent. The hydrocarbon blowing agent is soluble in the polyol solution having polyols with polyester linkages by using a reacted or unreacted compatibilizing agent represented by the formula: ##STR1## wherein R.sup.1 is preferentially OH, and R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.Type: GrantFiled: September 5, 1995Date of Patent: April 2, 1996Assignee: BASF CorporationInventors: Thomas L. Fishback, Thomas B. Lee
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Patent number: 5502150Abstract: The present invention is directed to polyurethane moldings produced via the RIM process. These polyurethane moldings have excellent reactivity, demold properties (at a 30s demold), and good elongation and tear strength, and comprise the reaction product of an HDI prepolymer having an NCO content of 5 to 25%, a functionality of less than 2.3, and a monomer content of less than 10%, with an isocyanate-reactive component comprising b1) at least one relatively high molecular weight organic compound containing at least about two isocyanate-reactive hydroxyl groups; b2) at least one relatively low molecular weight organic compound selected from the group consisting of diols, aminoalcohols, and mixtures thereof; and b3) at least one relatively low molecular weight hydroxyl-based crosslinking compound containing no more than one aliphatic amine hydrogen atoms capable of reacting with isocyanate groups; in the presence of at least one catalyst.Type: GrantFiled: June 29, 1994Date of Patent: March 26, 1996Assignee: Bayer CorporationInventors: David D. Steppan, Ronald A. Cageao, Neil H. Nodelman, William E. Slack, Frank Sanns, Jr.
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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: 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: 5488073Abstract: An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.Type: GrantFiled: June 1, 1995Date of Patent: January 30, 1996Assignee: Bayer CorporationInventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
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Patent number: 5484819Abstract: The present invention encompasses an improved process for preparing polymethylene polyphenyl polyisocyanate comprising reacting phosgene with polymethylene polyphenyl polyamine, the improvement wherein the polymethylene polyphenyl polyamine is acidified prior to phosgenation.Type: GrantFiled: October 13, 1994Date of Patent: January 16, 1996Assignee: Bayer CorporationInventors: Jeffrey S. Bolton, Ramon Kalyanaraman, Steven L. Schilling, Clarence D. Blue
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Patent number: 5484818Abstract: Polyisocyanate based organic aerogels having pore sizes less than 100 nm, densities in the range 10 to 800 kg/m.sup.3 and surface areas in the range 10 to 1500 m.sup.2 /g are provided.Type: GrantFiled: July 22, 1994Date of Patent: January 16, 1996Assignee: Imperial Chemical Industries PLCInventors: Rik De Vos, Guy L. J. G. Biesmans
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Patent number: 5482979Abstract: Compounds containing ester groups and tertiary amino groups and optionally hydroxyl groups are made by reacting optionally hydroxyfunctional acetoacetic acid esters of monofunctional or polyfunctional alcohols (particularly polyfunctional polyether polyols) with primary/tertiary polyamines (particularly diamines). These compounds are useful as optionally incorporable catalysts for the isocyanate addition reaction in the production of polyurethane foams by the isocyanate polyaddition process.Type: GrantFiled: June 8, 1994Date of Patent: January 9, 1996Assignee: Bayer AktiengesellschaftInventors: Josef Sanders, Ulrich Liman, Klaus Konig
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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
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Patent number: 5478867Abstract: A novel microporous isocyanate-based xerogel composition is disclosed. The composition can be prepared by a method comprising (1) (1) admixing (a) a polyisocyanate component, (b) a substantially unreactive solvent, and, optionally, (c) a polymerization catalyst, water, an active-hydrogen compound or a mixture thereof, provided that (c) is included wherein (b) does not also function to catalyze polymerization; under reaction conditions sufficient to form a gel; and (2) removing the solvent under non-supercritical conditions sufficient to form a microporous xerogel composition. The compositions can be readily evacuated for use in thermal insulative applications such as vacuum panels, for uses such as appliance insulation, which show superior K-factor values when compared with, for example, conventional rigid polyurethane open-cell foams as used in similar applications.Type: GrantFiled: June 29, 1994Date of Patent: December 26, 1995Assignee: The Dow Chemical CompanyInventor: Ricky L. Tabor
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Patent number: 5472989Abstract: An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.Type: GrantFiled: March 24, 1995Date of Patent: December 5, 1995Assignee: Bayer CorporationInventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
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Patent number: 5470890Abstract: Flexible foam resistant to both photochemical and oxidative degradation result from the use of bis(N-alkylaminocyclohexyl)methanes as curing agents for polyisocyanates or polyisocyanate prepolymers. The chain extenders may be used alone or in combination with other polyamines and with polyols. Where the polyisocyanate or polyisocyanate prepolymer is also aliphatic there is outstanding resistance to yellowing.Type: GrantFiled: June 17, 1994Date of Patent: November 28, 1995Assignee: UOPInventors: David W. House, Ray V. Scott, Jr., Mark J. Gattuso
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Patent number: 5470889Abstract: 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 tertiary amine, and (iii) a quaternary ammonium carboxylate salt, wherein the mole ratio of carboxylate metal salt: tertiary amine is a value less 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: February 10, 1995Date of Patent: November 28, 1995Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Kenneth G. Trout
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Patent number: 5470501Abstract: There is now provided a polyisocyanate-based foam made by an organic polyisocyanate with a polyol solution containing a C.sub.4 -C.sub.7 aliphatic and/or cycloaliphatic hydrocarbon as a blowing agent. The hydrocarbon blowing agent is soluble in the polyol solution having polyols with polyester linkages by using a reacted or unreacted compatibilizing agent represented by the formula: ##STR1## wherein R.sup.1 is preferentially OH, and R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.Type: GrantFiled: May 8, 1995Date of Patent: November 28, 1995Assignee: BASF CorporationInventors: Thomas L. Fishback, Thomas B. Lee
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Patent number: 5464880Abstract: A process for the CFC-free production of cellular polyurethane molded parts/articles with solid surfaces by reacting a reaction mixture of per se known starting materials in sealed molds, to yield polyurethane foams. Carbamates obtainable from aliphatic aminoalcohols and carbon dioxide are used as blowing agents, optionally in conjunction with other blowing agents. The process is suitable for producing foam coverings on steering wheels, spoilers and protective upholstery in car interiors, and for producing soles of shoes or shoe components.Type: GrantFiled: October 31, 1994Date of Patent: November 7, 1995Assignee: Bayer AktiengesellschaftInventors: Hans G. Weber, Peter Haas, Erhard Michels, Christian Weber, Klaus Brecht
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Patent number: 5464882Abstract: The invention relates to a method for inhibiting the degradation by dehydrohalogenation of hydrochlorofluorocarbons, such as for example the mixture of 123 and 123a, used as foaming agents during the formation reaction of foamed polyurethanes or polyisocyanurates starting from polyols and polyisocyanates. Prior to the reaction starting, a little amount of a stabilizing substance selected from the group consisting of nitromethane, nitroethane and 1-nitropropane is added to the reaction medium.Type: GrantFiled: June 15, 1994Date of Patent: November 7, 1995Assignee: Ausimont S.p.A.Inventors: Giampiero Basile, Ezio Musso, Claudio Tonelli, Sauro Girolomoni
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Patent number: 5461084Abstract: Rigid polyurethane foams are produced by reacting an organic polyisocyanate with an amine-based polyether polyol in the presence of a catalyst, a hydrogen-containing fluorocarbon and a minor amount of water. These foams are characterized by K-factors which are about 0.135 BTU-in./hr.ft..sup.2 .degree.F. or less.Type: GrantFiled: March 23, 1995Date of Patent: October 24, 1995Assignee: Bayer CorporationInventor: Herman P. Doerge
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Patent number: 5461083Abstract: A foamed plastic manufactured by foaming a mixture of a resin and a volatile polymerizable foaming agent, wherein the pressure in the foams of the foamed plastic is less than atmospheric pressure, is disclosed. Further, a foamed plastic manufactured by hermetically sealing with an airtight film and foaming a mixture of a resin and a volatile polymerizable foaming agent, wherein the pressure in a gap region between the airtight film and the foamed plastic and the pressure in the foams of the foamed plastic are less than atmospheric pressure is disclosed. Further, a method of manufacturing foamed plastic comprising foaming a mixture of a volatile polymerizable foaming agent and a resin, and irradiating the foamed plastic with an energy beam.Type: GrantFiled: July 16, 1992Date of Patent: October 24, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Kazufumi Ogawa
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Patent number: 5455283Abstract: There is now provided a closed cell rigid polyisocyanate based foam blowing with a C.sub.1 -C.sub.4 hydrofluorocarbon and water as blowing agents, which possesses a uniform density gradient varying by not more than 10 percent. There is also now provided a froth foaming mixture having good flow by employing a hydroxy terminated polyol which is pH neutral and a tertiary amine ether blow catalyst in an amount of 0.5 weight percent or more, using water and a C.sub.1 -C.sub.4 hydrofluorocarbon having a boiling point of 300.degree. K. or less as co-blowing agents.There is also provided a polyol composition having an average OH number of less than 400 and an average functionality of greater than 4, which when reacted with the isocyanate in the presence of a C.sub.1 -C.sub.4 hydrofluorocarbon, yields a rigid closed cell polyisocyanate based dimensionally stable foam.Type: GrantFiled: April 11, 1995Date of Patent: October 3, 1995Assignee: BASF CorporationInventors: Todd J. Green, John R. Tucker
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Patent number: 5451612Abstract: A process and a polymerization mixture for making integral skin polyurethane wherein Component A containing an isocyanate source is combined with Component B containing a polyol source mixture which includes a blowing agent and a polyurethane catalyst. The blowing agent comprises a carbonate source, and optionally water, an alum source and/or an acid source. The mixture is placed in a mold and the mold is closed. The isocyanate source and polyol source react and the carbonate source decomposes to produce carbon dioxide gas to form an integral skin polyurethane in the closed mold.Type: GrantFiled: August 17, 1993Date of Patent: September 19, 1995Inventor: Louis F. Cenegy
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Patent number: 5447921Abstract: A thermosetting unsaturated polyester-polyurethane hybrid foam resin composition is made without significant blistering by using a 2-component catalyst system--one which initiates at room temperature and one which initiates at a temperature of at least 75.degree. C. and has a one-hour half-life temperature of at least 90.degree. C.; the composition has a room temperature stability of at least thirty days.Type: GrantFiled: March 24, 1995Date of Patent: September 5, 1995Assignee: Aristech Chemical CorporationInventors: Keith A. Borden, David S. Jensen, Robert E. Anderson
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Patent number: 5444098Abstract: The invention relates to a process for producing a mainly closed cell phenolic foam by curing a foam system comprising at least a phenolic resin and a blowing agent. This curing is effected in the presence of an either or not alkylated morpholine which is fluorated whether completely or not and which corresponds to the following general structural formula:C.sub.n H.sub.x F.sub.y NOwherein:N.gtoreq.4x=2n+1-yy=2n+1-x.In this way, it is possible to obtain a phenolic foam having good insulation properties even if use is made of a blowing agent which is substantially free of CFC's or if the foam temperature is allowed to rise during the curing upto above 85.degree. C. to obtain a better curing.Type: GrantFiled: January 14, 1994Date of Patent: August 22, 1995Assignee: RecticelInventors: Bart Wallaeys, Peter Spanhove
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Patent number: 5436278Abstract: The present invention provides:a melamine resin foam obtained by foaming a resin composition comprising a melamine/formaldehyde condensate, a blowing agent and an isocyanate,a process for producing the above melamine resin foam, which comprises foaming a resin composition comprising a melamine/formaldehyde condensate, a blowing agent and an isocyanate, anda melamine/formaldehyde condensate used in the production of the above melamine resin foam, which is obtained by reacting melamine and formaldehyde in the presence of a silane coupling agent.The melamine resin foam of the present invention is free from the problems of the prior art, has solved the problem of fragility without impairing the good flame retardancy and low thermal conductivity inherently possessed by melamine resin foams, and causes no danger during the production.Type: GrantFiled: December 7, 1994Date of Patent: July 25, 1995Assignee: Nisshinbo Industries, Inc.Inventors: Yasuo Imashiro, Shun Hasegawa, Tatsuya Okutani
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Patent number: 5432207Abstract: A process for the manufacture of a foamed product in which a reactive phenolic resin is mixed with urea and an isocyanate, and this mixture is then mixed with an acid catalyst. The phenolic resin polymerizes, thereby liberating water and formaldehyde. The water reacts with the isocyanate to liberate carbon dioxide and the formaldehyde reacts with the urea. As the phenolic resin polymerizes, it traps the carbon dioxide in bubbles, thereby forming a foamed product.Type: GrantFiled: October 25, 1994Date of Patent: July 11, 1995Assignee: Jiffy Foam, Inc.Inventor: Samuel L. Rader
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Patent number: 5416130Abstract: A process for the production of polyurethane foams, in particular for the production of composite articles by back-foaming a plastics film as covering layer by the reaction ofa) one or more polyisocyanates withb) a polyol component which is free from salt groups in the presence ofc) at least one blowing agent,d) alkali metal carboxylates ande) from 0.01 to 30% by weight, based upon the weight of component b), of one or more organic compounds which are different from components a) through d), which are free from tertiary amino groups, metal and phosphorus and which have a dipole moment above 2.0 Debye.Type: GrantFiled: March 4, 1994Date of Patent: May 16, 1995Assignee: Bayer AktiengesellschaftInventors: Ulrich Liman, Heinz Eickhaus, Gerd Steinert
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Patent number: 5405884Abstract: 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 tertiary amine, and (iii) a quaternary ammonium carboxylate salt, wherein the mole ratio of carboxylate metal salt: tertiary amine is a value less 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: April 8, 1994Date of Patent: April 11, 1995Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Kenneth G. Trout
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Patent number: 5405886Abstract: The present invention is directed to an isocyanate reactive mixture and the flexible polyurethane foam produced therefrom. The reactive mixture contains specific filled polyols, water, a catalyst for the reaction between an isocyanate group and a hydroxyl group, and a specific N-hydroxyalkyl quaternary ammonium salt. The isocyanate used is toluene diisocyanate.Type: GrantFiled: May 5, 1994Date of Patent: April 11, 1995Assignee: Miles Inc.Inventors: Charles M. Milliren, James R. Gricar
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Patent number: 5389696Abstract: The present invention is directed to an improved internal mold release system for the production of low density molded foam parts. The process comprises reacting a reaction mixture of an isocyanate and at least one organic compound containing isocyanate-reactive hydrogens in the presence of a blowing agent, a catalyst, a surfactant, an IMR, and, optionally, a reinforcing agent, in a closed mold. The IMR comprises:a) mixed esters comprising the reaction product of i) aliphatic dicarboxylic acids, ii) aliphatic polyols, and iii) monocarboxylic acids with 12 to 30 carbon atoms in the molecule. The IMR may additionally comprise b) and/or c) wherein:b) represents a compound comprising the reaction product of i) N,N-dimethylpropylene diamine with ii) a compound selected from the group consisting of tall oil, C.sub.8-20 monofunctional carboxylic acids, and mixtures of C.sub.Type: GrantFiled: July 14, 1994Date of Patent: February 14, 1995Assignee: Miles Inc.Inventors: Michael P. Dempsey, Gene Symosko, Merle W. Lesko, Ronald L. Zacour
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Patent number: 5385953Abstract: A microcellular polyurethane composite material comprising desiccated rubber particles embedded in a microcellular matrix of polyurethane. Rubber particles derived from tires and other sources are combined with a desiccant to remove moisture present in the particles. The resulting desiccated rubber particles and desiccant are mixed with a polyol, polyisocyanate, catalyst, and blowing agent to form a precursor blend which is cured to produce a microcellular polyurethane composite. The resulting microcellular rubber-polyurethane composite may be used for tires, shoe and boot soles, surface coatings, and other applications requiring a material which is structurally strong and wear resistant. The desiccated rubber particles may be premixed with the polyol and/or added simultaneously with the polyol, polyisocyanate, catalyst, and blowing agent during composite molding.Type: GrantFiled: October 18, 1993Date of Patent: January 31, 1995Assignee: Urethane Technologies, Inc.Inventor: Thomas R. McClellan
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Patent number: 5371057Abstract: A method for producing a modified polyisocyanurate foam by reacting an organic polyisocyanate, polyol and water in the presence of a trimerizing catalyst composed of a certain hydroxyalkyl quaternary ammonium compound, and a carbodiimidizing catalyst composed of a certain phosphorene oxide. The method enables production of low density modified polyisocyanurate foams with ease and rapidly without using volatile blowing agents such as CFC, HCFC, HFC and methylene chloride.Type: GrantFiled: April 8, 1994Date of Patent: December 6, 1994Assignee: Nisshinbo Industries, Inc.Inventors: Kiyotake Morimoto, Satoshi Nakamura
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Patent number: 5366662Abstract: Compositions comprising at least one hydrofluoroalkane and at least one stabilizing agent chosen from quinones and compounds containing a nitroso group, added in an amount sufficient to stabilize the hydrofluoroalkanes. These compositions can especially be used in premixtures for polyurethane foams.Type: GrantFiled: September 23, 1993Date of Patent: November 22, 1994Assignee: Solvay (Societe Anonyme)Inventors: Pierre Barthelemy, Annie Leroy
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Patent number: 5356943Abstract: RIGID FOAMS, in particular, polyisocyanurate and polyurethene foams having improved fire and surface properties can be prepared by reacting a polymethylene polyphenyl polyisocyanate composition with a polyfunctional active hydrogen compound under foam-forming conditions, the polyisocyanate composition containing not more than 20% by weight of dyisocyanates and not more than 20% by weight of polyisocyanates containing more than 5 isocyanate groups per molecule.Type: GrantFiled: September 29, 1989Date of Patent: October 18, 1994Assignee: Imperial Chemical Industries PLCInventors: Ernst O. Dueber, Berend Eling
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Patent number: 5352710Abstract: A cellular, foamed-polymer product is disclosed, which is constituted by a mixture comprising: at least one isocyanate, at least one anhydride, at least one vinylidene compound, poly-(vinyl chloride), at least one foaming agent, a heat stabilizer, calcium stearate and zinc stearate.The product production scraps and processing wastes and residues are not riskful for health and environment, and can be disposed of as "waste similar to solid municipal waste".Type: GrantFiled: May 15, 1992Date of Patent: October 4, 1994Assignee: Prima S.p.A.Inventor: Leone Lauri
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Patent number: 5346928Abstract: A process is provided for the preparation of rigid forms which comprises the step of reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promotor being an isocyanate-reactive cyclic compound of formula: ##STR1## wherein Y is O or NR.sup.1 wherein each R.sup.1 independently is a lower alkyl radical of C.sub.1 -C.sub.6 or a lower alkyl radical substituted with an isocyanate-reactive group;each R independently is hydrogen, a lower alkyl radical of C.sub.1 -C.sub.6 or (CH.sub.2).sub.m --X wherein X is an isocyanate-reactive group which is OH or NH.sub.2 and m is 0, 1 or 2; andn is 1 or 2;with the proviso that at least one of R.sup.Type: GrantFiled: September 9, 1993Date of Patent: September 13, 1994Assignee: Imperial Chemical Industries PLCInventors: Rik De Vos, N. Washington Keane
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Patent number: 5344853Abstract: Polyol mixtures containing a mixture of internal mold release agents which are storage stable are made up of (a) from about 55 to about 95% by weight of a polyol mixture of (1) 30-70% by weight of at least one polyol with an OH value of more than 700 and (2) from about 30 to about 70% by weight of at least one polyol with an OH value of 700 or less than 700 and (b) from about 5 to about 45% by weight of a mixture of internal mold release agents made up of (1) from about 60 to about 95% by weight of at least one salt-like release agent and (2) from about 5 to about 40% by weight of at least one non-salt-like release agent containing an amide NH function or a urethane NH function. Known auxiliaries and additives may optionally be included. These polyol mixtures are useful in the production of rigid, semirigid and flexible polyurethane materials, particularly molded polyurethanes.Type: GrantFiled: July 12, 1993Date of Patent: September 6, 1994Assignee: Bayer AktiengesellschaftInventors: Ulrich Knipp, Wulf von Bonin, Alfred Neuhaus
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Patent number: 5342856Abstract: The use of solutions of zinc carboxylates having 8 to 24 carbon atoms in aliphatic polyamines having molecular weights of from 131 to 500 having a total of 2 or 3 primary, secondary and/or tertiary amine nitrogen atoms as additives for the formation of a compact surface in the production of molded foams having a maximum gross density of 500 kg/m.sup.3 from organic polyisocyanates, polyether polyols, chain lengthening agents, water and optionally other auxiliary agents and additives.Type: GrantFiled: July 2, 1992Date of Patent: August 30, 1994Assignee: Bayer AktiengesellschaftInventors: Christian Weber, Hartwig Grammes
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Patent number: 5338478Abstract: A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a diarylamine, a sterically hindered phenol and a pentaerythritol diphosphite.Type: GrantFiled: July 27, 1993Date of Patent: August 16, 1994Assignee: Uniroyal Chemical Company, Inc.Inventors: Lawrence B. Barry, Mark C. Richardson
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Patent number: 5331017Abstract: Blowing agents of tetrazoles and their derivatives which have a melting point over 200.degree. C. and are used to manufacture the high quality foaming thermoplastic synthetic resin moldings, especially engineering or superengineering plastic moldings and said blowing agents generate no harmful gases and do not cause the deterioration of the thermoplastic synthetic resin moldings.Type: GrantFiled: June 18, 1993Date of Patent: July 19, 1994Assignee: Toyo Kasei Kogyo Company, LimitedInventors: Atsuhiro Onishi, Koichi Matsunami, Masanao Ebara, Hiroaki Tanaka