C-x-c Reactant Contains A Carbohydrate Group Patents (Class 521/175)
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Patent number: 5194175Abstract: A method for preparation of rigid foam disclosed. The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF.sub.2, up to about 2% by weight of water, and a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms. Related methods and compositions are also disclosed.Type: GrantFiled: April 11, 1991Date of Patent: March 16, 1993Assignee: Foam Supplies, Inc.Inventors: David G. Keske, Mark S. Schulte
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Patent number: 5183830Abstract: A method for the preparation of highly elastic foams of reduced compression hardness and having urethane groups is disclosed, in which the reaction of the polyurethane-forming materials is carried in the presence of 0.01 to 5% by weight, based on the polyol, of a compound, which has at least one polyoxyalkylene group and at least one anionic group in the molecule. The use of fluorocarbons to decrease the compression hardness can reduced appreciably by the use of this compound.Type: GrantFiled: April 15, 1991Date of Patent: February 2, 1993Assignee: Th. Goldschmidt AGInventors: Volker Mohring, Volker Zellmer
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Patent number: 5137934Abstract: This invention relates to alkylene oxide adducts prepared by alkoxylating an initiator, containing polymerized ethylene oxide, with a C.sub.3 or higher alkylene oxide, and polyurethane foams prepared therefrom. The invention offers the advantage of preparing alkylene oxide adducts and polyurethane foams with acceptable properties, where the availability or the possibility of conducting an alkoxylation reaction with ethylene oxide is restricted or not at all feasible.Type: GrantFiled: September 29, 1989Date of Patent: August 11, 1992Assignee: The Dow Chemical CompanyInventors: David J. Williamson, Matthijs van den Engh
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Patent number: 5135961Abstract: Polyol compositions comprising a polyol and a halogenated flame retardant are stabilized for storage and handling by the addition of a stabilizing amount of an amine.Type: GrantFiled: July 27, 1990Date of Patent: August 4, 1992Assignee: Ethyl CorporationInventor: Elbert F. Feske
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Use of polysiloxane polyoxyalkylene block copolymers for the preparation of rigid polyurethane foams
Patent number: 5130344Abstract: A process of preparing rigid polyurethane foams is disclosed, wherein polysiloxane polyoxyalkylene block copolymers which have at least one aminofunctional group of the general formula, ##STR1## which is linked to a silicon atom, are used in an amount of 0.2 to 5% by weight, based on the polyol or the prepolymer having isocyanate groups, to provide polyurethane foams, which otherwise contain closed cells, with at least partially open the cells.Type: GrantFiled: August 30, 1990Date of Patent: July 14, 1992Assignee: Th. Goldschmidt AGInventors: Hans-Joachim Kollmeier, Rolf-Dieter Langenhagen, Helmut Schator, Christian Weitemeyer -
Patent number: 5091438Abstract: A method of producing a rigid urethane foam, which comprises reacting a blend polyol consisting of a polyol having a hydroxyl value of 300 to 450 mg KOH/g as prepared by using an acyclic sugar alcohol of 5 to 6 carbon atoms as an initiator and one or more other polyols, said blend polyol having a sugar alcohol content of 3 to 14 weight % and an average hydroxyl value of 300 to 430 mg KOH/g, with a polyisocyanate using 4.0 to 7.0 weight parts of water based on 100 weight parts of said polyol composition as a blowing agent, can reduce the CFC requirements by 50 to 100 percent as compared with the known production technology for rigid urethane foams and, moreover, the adhesive property of the resulting foam is not inferior to that of the conventional urethane foam.Type: GrantFiled: July 10, 1990Date of Patent: February 25, 1992Assignee: Takeda Chemical Industries, Ltd.Inventors: Yoshihiko Tairaka, Masayoshi Idomoto
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Patent number: 5034425Abstract: A rigid polyurethane foam produced by reacting a special polyol component with an isocyanate component in the presence of a blowing agent containing water in an amount of 2 to 3.5% by weight per 100% by weight of the polyol component is excellent in fluidity with balanced excellent properties.Type: GrantFiled: October 21, 1989Date of Patent: July 23, 1991Assignee: Hitachi, Ltd.Inventors: Kazuyoshi Kuroishi, Reishi Naka, Isao Kobayashi
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Patent number: 5032623Abstract: A method for preparation of rigid foam disclosed. The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF.sub.2, up to about 2% by weight of water, and a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms. Related methods and compositions are also disclosed.Type: GrantFiled: July 24, 1989Date of Patent: July 16, 1991Assignee: Foam Supplies, Inc.Inventors: David G. Keske, Mark S. Schulte
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Patent number: 5001167Abstract: A polyurethane polymer is prepared from a reaction mixture comprising(a) a polyisocyanate component; and(b) an active hydrogen component containing(i) at least about 50 weight percent based on total active hydrogen component of at least one polyether polyol having an average nominal functionality of at least about 3 and containing at least about 50 weight percent oxyethylene units said polyether polyol not being ethylene oxide capped. The polyurethane polymer is a hydrocarbon resistant elastomer suitable for use in environments wherein it is exposed to hydrocarbons.Type: GrantFiled: March 21, 1989Date of Patent: March 19, 1991Assignee: The Dow Chemical CompanyInventors: Eugene P. Wiltz, Jr., Jose V. Saavedra, Gautam D. Rajangam
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Patent number: 4943597Abstract: Rigid closed-cell polyisocyanate-based foams are prepared by the reaction of polyisocyanate with a polyol composition having an average hydroxyl number of about 100 to about 500 and comprising at least one polyether polyol containing four or more active hydrogens and having a hydroxyl number of from about 50 to about 500. The blowing of the foam is essentially with carbon dioxide generated from the reaction of water with polyisocyanate so as to provide foams of the desired density containing at least 40 mole percent carbon dioxide in their cells.Type: GrantFiled: December 7, 1988Date of Patent: July 24, 1990Assignee: The Dow Chemical CompanyInventors: Henri J. M. Grunbauer, Johan A. Thoen, Guido F. Smits
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Patent number: 4929646Abstract: Flexible polyurethane foams are prepared using certain high molecular weight, high functionality poly(oxyethylene) compounds as cell openers and softeners. These high functionality polyether polyols have been found to be very effective in opening the cells of the foam, even when used in making foams based on PIPA polyols, which are notoriously closed-celled. They are also quite effective in softening foams made using MDI-based polyisocyanates.Type: GrantFiled: November 14, 1988Date of Patent: May 29, 1990Assignee: The Dow Chemical CompanyInventors: Jerram B. Nichols, Douglas L. Hunter, Ronald M. Herrington, John F. Serratelli, David G. Carey
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Patent number: 4927861Abstract: The present invention relates to the obtention of a rigid polyurethane compound, cellular or micro-cellular, reinforced or not, having a density ranging from 0.20 to 1.30 g/cm.sup.3 ; the formation of this compound happens through the mixing of a resin composed of a mixture of polyether and polyester polyols aminated or not, having a molecular weight ranging from 100 to 5000, employed at 5 to 100 parts by weight; surfactant based on dimethylpolysiloxane, employed at 0.1 to 5 parts by weight; amine catalysts of the tetramethylethylenediamine and dimethylcyclohexylamine type employed at 0.Type: GrantFiled: February 10, 1989Date of Patent: May 22, 1990Assignee: Brastemp S/AInventors: Sadario O. Souto, Wilson G. De Moura
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Patent number: 4902816Abstract: Polyols containing polyether and polyester moieties, based on phthalic acid are described. A phthalic acid derivative is reacted with a polyether polyol to give the novel polyols which are useful not only in polyisocyanurate foams, but also polyurethane foams as well. The phthalic acid derivative may be phthalic acid, phthalic anhydride and an ester of phthalic acid, for example. The polyester polyol is made from an initiator selected from the group consisting of alkanolamines, alkyleneamines, arylamines, sucrose, glycerin, sorbitol, .alpha.-methylglucoside, .beta.-methylglucoside, and mixtures thereof. The polyester polyol may be made by alkoxylating the initiators.Type: GrantFiled: March 28, 1988Date of Patent: February 20, 1990Assignee: ARCO Chemical Technology, Inc.Inventor: Kenneth G. McDaniel
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Patent number: 4877879Abstract: In an improved process for the preparation of polyether compositions, amine-initiated, alkaline catalyzed polyethers are neutralized with a substantial excess of formic acid that neutralizes the catalyst and stabilizes the resultant composition. This is particularly advantageous where tertiary nitrogen is found in the amine initiator or in the polyether that results.Type: GrantFiled: January 4, 1988Date of Patent: October 31, 1989Assignee: Dow Chemical (Nederland) B.V.Inventor: Michael A. P. Gansow
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Patent number: 4863976Abstract: Flexible polyurethane foams are prepared using certain high molecular weight, high functionality poly(oxyethylene) compounds as cell openers and softeners. These high functionality polyether polyols have been found to be very effective in opening the cells of the foam, even when used in making foams based on PIPA polyols, which are notoriously closed-celled. They are also quite effective in softening foams made using MDI-based polyisocyanates.Type: GrantFiled: April 26, 1988Date of Patent: September 5, 1989Assignee: Dow Chemical CompanyInventors: Jerram B. Nichols, Ronald M. Herrington, Douglas L. Hunter, John F. Serratelli, David G. Carey
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Patent number: 4782099Abstract: Flexible polyurethane foams having increased compression hardness are produced by reacting an organic polyisocyanate with a mixture of polyols in the presence of a blowing agent and optionally known additives such as catalysts, emulsifiers, etc. The mixture of polyols is (1) 75-95 wt % polyether polyol with terminal OH groups having a functionality of from 2 to 4 and an OH number of from 25 to 60 and (2) 5-25 wt % polyether polyol having a functionality of at least six and an OH number of from 150 to 200 which is the reaction product of an alcohol having a functionality of at least six and propylene oxide which has been modified to contain 5-50 wt % terminal ethylene oxide groups. These foams are useful in furniture applications.Type: GrantFiled: August 21, 1987Date of Patent: November 1, 1988Assignee: Bayer AktiengesellschaftInventors: Manfred Dietrich, Hans-Walter Illger, Peter Vogtel
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Patent number: 4752626Abstract: This invention generally relates to a high resilience urethane foam (HR foam) having low compression set at a wide range of isocyanate index for use in small void filling in integrated foam parts.The small voids formed in the molding process of integrated foam parts can be filled without penetration of foaming liquids into existing foam cells. In addition, resulting foams have very low compression set values at a wide range of isocyanate index.The foaming system of the present invention is composed of two components, i.e., thixotropic polyisocyanate component and thixotropic polyol component. Their thixotropicity is obtained by adding benzal sorbitol into respective components. The polyisocyanate is selected from organic polyisocyanates and the polyol component is prepared by mixing a polyol blend composed of a polyolefinic polyol and a polyoxyalkylene polyol in a weight ratio between 95/5 to 50/50, a blowing agent, a surfactant and a catalyst.Type: GrantFiled: August 27, 1987Date of Patent: June 21, 1988Assignee: General Motors CorporationInventors: Robert J. Hoye, Vabilisetti S. Murty, Kaneyoshi Ashida, Chin-Jui Chang
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Patent number: 4743629Abstract: Partition membranes which are permeable to blood electrolytes fabricated from crosslinked polyetherurethane compositions having from 20 to 50% hard segments. The membranes absorb from 50 to 120% of their dry weight of water and have electrolyte diffusion constants of up to 1.times.10.sup.-6 cm.sup.2 /sec. The membranes are included in electrochemical, fiber optic and solid state blood electrolyte sensors to provide blood compatible surfaces and to ensure that blood components deleterious to analysis of electrolyte in the blood remain separated from the sensing elements.Type: GrantFiled: July 2, 1987Date of Patent: May 10, 1988Assignee: Becton, Dickinson and CompanyInventors: Mutlu Karakelle, Richard J. Zdrahala
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Patent number: 4742089Abstract: Rigid polyurethane foams produced by reacting a polyol component having a special composition with an isocyanate component in the presence of a blowing agent, a reaction catalyst and a foam stabilizer with a mold release time of as short as 5.5 minutes or less, have remarkably low thermal conductivity of 12.5.times.10.sup.-3 Kcal/m.hr..degree.C. or less and a low density and are suitable as heat insulating materials for refrigerators and the like.Type: GrantFiled: August 12, 1987Date of Patent: May 3, 1988Assignee: Hitachi, Ltd.Inventors: Reishi Naka, Kazuyoshi Kuroishi
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Patent number: 4722946Abstract: A non-liquid, energy-absorbing polyurethane is derived from the process which comprises reacting a mixture of linear and branched polyols, a polyisocyanate and, optionally, a blowing agent, under polyurethane-forming conditions at an isocyanate index of from about 65 to about 85.Type: GrantFiled: July 3, 1986Date of Patent: February 2, 1988Assignee: Polymer Dynamics (Delaware), Ltd.Inventor: Fritz Hostettler
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Patent number: 4699932Abstract: The present invention relates generally to open-cell polyurethane foams and, more specifically, to such foams which are halogenated-hydrocarbon blown and are essentially urea-free, together with a composition and method for the fabrication thereof.Type: GrantFiled: September 12, 1986Date of Patent: October 13, 1987Assignee: Olin CorporationInventors: Stephen Fuzesi, Gail H. Clarke
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Patent number: 4680214Abstract: There is disclosed a polyurethane foam of the rigid type having three different types of polyol components capable of having suspended therein fillers and reinforcing fibers. The foam is made into boards and the like and has continuous fiber glass strands or yarn disposed longitudinally in or adjacent the surface skin of the foam. The strands or yarn are parallel and close together and are flattened out in the foam-forming process so that the surfaces have a continuous fiber glass implant longitudinally and substantially so transversely.Type: GrantFiled: March 12, 1986Date of Patent: July 14, 1987Assignee: Polymetrics CorporationInventors: Kurt C. Frisch, Kaneyoshi Ashida
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Patent number: 4661532Abstract: Hydrophobic polyurethane compositions can be used to repair or fill-in surface defects in structural components. The hydrophobic composition can be packaged in two parts, a hydrophobic polyol part and a isocyanate part wherein the polyol part comprises a polyol and a coal tar or pitch composition and the isocyanate part comprises a reactive isocyanate compound. The parts of the composition can be mixed and applied to surface defects of structural members such as railroad ties and can rapidly form a hard, permanent, strongly bonded repair.Type: GrantFiled: June 25, 1985Date of Patent: April 28, 1987Assignee: H. B. Fuller CompanyInventor: Sandra K. Morin
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Patent number: 4642320Abstract: Reaction injection molded polyurethanes prepared from a composition comprising (A) a relatively high molecular weight polyol, (B) a chain extender and (C) an aliphatic polyisocyanate or polyisothiocyanate are improved by replacing a portion of the relatively high molecular weight polyol with an aminated or partially aminated polyoxyalkylene material.Type: GrantFiled: June 19, 1985Date of Patent: February 10, 1987Assignee: The Dow Chemical CompanyInventors: Robert B. Turner, Richard D. Peffley, James A. Vanderhider
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Patent number: 4642319Abstract: The preparation of isocyanurate foams from a recycled polyethylene terephthalate polyol modified with aromatic amino polyols, sucrose polyols, ethoxylated alphamethyl glucosides, alkoxylated glycerine or alkoxylated sorbitol is disclosed. These modified foams exhibit improved fluorocarbon solubility. The foams may be used for building roofing and sheathing applications.Type: GrantFiled: January 22, 1986Date of Patent: February 10, 1987Assignee: Texaco Inc.Inventor: Kenneth G. McDaniel
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Patent number: 4585807Abstract: The invention relates to rigid polyurethane foams prepared by reacting a polyether polyol other than one derived from ethylenediamine, an alkylene oxide adduct of ethylenediamine, catalyst, surfactant, and blowing agent, and an organic polyisocyanate. The compositions are useful for producing insulation panels.Type: GrantFiled: January 14, 1985Date of Patent: April 29, 1986Assignee: BASF CorporationInventor: Donald L. Christman
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Patent number: 4575520Abstract: Rigid, closed-cell, flame-resistant polyurethane foams are produced by reacting a polyol mixture with a polyphenyl-polymethylene-polyisocyanate in the present of a catalyst system. The polyol mixture includes: (1) from 25 to 43 wt % flame proofing agent, (2) from 5 to 50 wt % sucrose polyether having an OH number of from 350 to 550, (3) from 0 to 30 wt % amine initiated polyethers having an OH number of from 400 to 800, (4) from 0 to 30 wt % other polyether or polyester having an OH number of from 150 to 600, (5) from 4 to 13 wt % glycerol, (6) from 0.5 to 3 wt % silicone stabilizer and (7) from 0.05 to 1.5 wt % water. The catalyst system is made up of at least two components selected from tertiary amines, alkali metal carboxylates, quaternary ammonium carboxylates and organic tin compounds. The reactants are employed in quantities such that the NCO to OH equivalent ratio is from 1.07 to 1.45 (the isocyanate-index is from 1.07 to 1.45).Type: GrantFiled: January 16, 1985Date of Patent: March 11, 1986Assignee: Bayer AktiengesellschaftInventors: Manfred Kapps, Rolf Wiedermann, Norbert Adam, Eckehard Weigand
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Patent number: 4564645Abstract: Liquid dianhydrohexitol mixtures are prepared from diacylation products of hexitols and compounds such as organic carboxylic acids, carboxylic acid anhydrides, carboxylic acid halides, ketene and carbonic acid ester derivatives. More specifically, such diacylation products are simultaneously dehydrated and isomerized by subjecting them to a temperature of at least 130.degree. C. in the presence of a strong acid to yield diacylated dianhydro-hexitol isomer mixtures. These isomer mixtures are then converted to dianhydro-hexitol isomer mixtures by hydrolysis or transesterification. Suitable strong acids include proton acids, Lewis acids and heterogeneous acid catalysts (e.g., ion exchange resins). The mixtures of the present invention are characterized by a minimal tendency towards crystallization. These mixtures are particularly useful as chain extending agents in the production of polyurethanes.Type: GrantFiled: January 7, 1985Date of Patent: January 14, 1986Assignee: Bayer AktiengesellschaftInventors: Herbert Salzburg, Manfred Hajek, Holger Meyborg
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Patent number: 4546120Abstract: Compositions containing an organic polyisocyanate and a fatty polyol are provided. The fatty polyols may be derived from an epoxidized fatty alcohol that has been reacted with a polyfunctional-hydroxy compound. The compositions are preferably salt-free and are useful in preparing a variety polyurethane materials.Type: GrantFiled: March 26, 1985Date of Patent: October 8, 1985Assignee: Henkel CorporationInventors: Dwight E. Peerman, Edward DiDomenico, Kurt C. Frisch, Alfred Meffert
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Patent number: 4530941Abstract: Reaction injection molded polyurethanes prepared from a composition comprising (A) a relatively high molecular weight polyol, (B) a chain extender and (C) a polyisocyanate or polyisothiocyanate are improved by replacing a portion of the relatively high molecular weight polyol with an aminated or partially aminated polyoxyalkylene material.Type: GrantFiled: November 2, 1983Date of Patent: July 23, 1985Assignee: The Dow Chemical CompanyInventors: Robert B. Turner, Richard D. Peffley, James A. Vanderhider
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Patent number: 4528112Abstract: Novel polyether polyols made by alkoxylating a mixture of initiators are described. The initiator mixture is made up of about 60 to 90 wt. % of a partially alkoxylated trifunctional initiator and 10 to 40 wt. % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8. Preferably, the alkylene oxide component to be reacted with the initiator mixture is a blend of ethylene oxide and propylene oxide. Flexible polyurethane foams made from these polyether polyols have improved load bearing properties as compared with those made from prior art polyols.Type: GrantFiled: July 26, 1983Date of Patent: July 9, 1985Assignee: Texaco Inc.Inventors: George P. Speranza, Michael Cuscurida
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Patent number: 4521572Abstract: Novel modified polyether polyols made by first optionally alkoxylating, subsequent reaction with epoxy resins and final alkoxylation of mixtures of initiators is described. The initiator mixture is made up of about 60 to 90 wt. % of a partially alkoxylated trifunctional initiator and 10 to 40 wt. % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8. Preferably, the alkylene oxide component is a blend of ethylene oxide and propylene oxide, and the resulting modified polyol molecules have 0.25 to 2.5 wt. % internally located epoxy resin. Flexible polyurethane foams made from these polyether polyols have improved load bearing properties as compared with those made from prior art polyols.Type: GrantFiled: February 22, 1984Date of Patent: June 4, 1985Assignee: Texaco Inc.Inventors: Michael Cuscurida, Bruce W. Peterson
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Patent number: 4520139Abstract: Gel forming polysaccharides such as pectin react with polyisocyanates to form useful polyurethane foams.Type: GrantFiled: July 26, 1984Date of Patent: May 28, 1985Assignees: Patrick James Crehan, Richard J. FrickeInventor: Richard B. Kennedy
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Patent number: 4518720Abstract: Flexible polyurethane foams having improved properties and made from modified polyether polyols are described. The polyether polyols are modified with adducts of epoxy resins, such as the diglycidyl ether of Bisphenol A, and diamines, such a polyoxypropylenediamine. The resulting modified polyether polyols have a molecular weight of from about 2,000 to 7,000. The mole ratio of epoxy equivalents to amine equivalents in the adduct ranges from about 2/1 to 10/1.Type: GrantFiled: June 11, 1984Date of Patent: May 21, 1985Assignee: Texaco Inc.Inventors: Michael Cuscurida, Harold G. Waddill, Bruce W. Peterson
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Patent number: 4490490Abstract: Enhanced load-bearing properties for flexible polyurethane foam can be achieved by employing a hydroxyl compound-modified benzyl ether-containing resole polyol as part of the polyol component (5 to 25 weight percent based on polyol) in the preparation of the foam.Type: GrantFiled: May 24, 1983Date of Patent: December 25, 1984Assignee: BASF Wyandotte CorporationInventors: John T. Patton, Jr., Thirumurti Narayan, Louis H. Dumas
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Patent number: 4487816Abstract: A sprayable, modified polyisocyanurate solid or foam composition, with fast reaction times and excellent fire properties and capable of being sprayed in a one-to-one, fixed-volume spray system, is prepared by the reaction of a low-functionality MDI, with a polyol composition comprising a methoxy polyethylene glycol and a methyl glucoside polyol, the reaction carried out in the presence of a trimerization catalyst, to provide a sprayable polyisocyanurate composition particularly useful for spraying upright and overhead surfaces, due to the fast reaction time and rapid cure.Type: GrantFiled: January 4, 1984Date of Patent: December 11, 1984Assignee: Thermocell Development, Ltd.Inventor: Stuart B. Smith
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Patent number: 4487854Abstract: The invention relates to polyols prepared by reacting ethylene oxide with an initiator followed by additional alkylene oxide. The ethylene oxide blocks at the initiator ranges from 1 to 30 weight percent based on the weight of the polyol. Polyurethane foams prepared from these polyols exhibit good air flow and improved load bearing properties.Type: GrantFiled: December 27, 1983Date of Patent: December 11, 1984Assignee: BASF Wyandotte CorporationInventor: Robert J. Hartman
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Patent number: 4469824Abstract: Terephthalic esters may be made to remain in a liquid form by reacting recycled or scrap polyethylene terephthalate (PET) with diethylene glycol and one or more oxyalkylene glycols and stripping out some of the ethylene glycol present. The mole ratio of glycols to scrap PET should also be greater than 1.2:1. This process keeps any diesters from separating out of the solution as solids. These liquid terephthalic esters are useful as polyol extenders in rigid polyurethane foams and as the sole polyol component in polyisocyanurate foams.Type: GrantFiled: November 18, 1983Date of Patent: September 4, 1984Assignee: Texaco, Inc.Inventors: Robert A. Grigsby, Jr., George P. Speranza, Michael E. Brennan
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Patent number: 4451588Abstract: High load bearing flexible polyurethane foams are made using novel polyether polyols which may be made by alkoxylating a mixture of initiators. The initiator mixture is made up of about 60 to 90 wt. % of a partially alkoxylated trifunctional initiator and 10 to 40 wt. % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8. Preferably, the alkylene oxide component to be reacted with the initiator mixture is a blend of ethylene oxide and propylene oxide.Type: GrantFiled: July 26, 1983Date of Patent: May 29, 1984Assignee: Texaco Inc.Inventors: George P. Speranza, Michael Cuscurida, Bruce W. Peterson
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Patent number: 4438226Abstract: The invention is a polyurethane comprising the reaction product of(a) a 1,4-lactone of 3,6-anhydropentahydroxyhexanoic acid; and(b) an organic polyisocyanate.The polyurethanes of this invention are useful in coatings, compression moldings, control release systems, films, foams and the like.Type: GrantFiled: April 22, 1983Date of Patent: March 20, 1984Assignee: The Dow Chemical CompanyInventors: Stoil K. Dirlikov, Connie J. Schneider
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Patent number: 4430490Abstract: Polyether polyols and their method of preparation are disclosed. The polyether polyols are prepared by reacting polyhydric alcohols with an alkylene oxide in the presence of an alkaline catalyst. The reaction mixture is then treated with a hydroxy-carboxylic acid so as to neutralize the alkaline catalyst and form a clear reaction mixture without otherwise removing the alkaline catalyst. The polyether polyols are useful for the production of polyurethane foams.Type: GrantFiled: August 10, 1982Date of Patent: February 7, 1984Assignee: PPG Industries, Inc.Inventor: Herman P. Doerge
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Patent number: 4417998Abstract: Polyurethane foams which may be rendered flame resistant by the addition of flame retardants are produced by reaction between a carbohydrate, a polyisocyanate and water in the presence of a suitable surfactant and polyurethane forming catalyst.Type: GrantFiled: May 20, 1983Date of Patent: November 29, 1983Assignees: Patrick James Crehan, Richard J. FrickeInventor: Richard B. Kennedy
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Patent number: 4393015Abstract: A process for producing urethane-modified polyisocyanurate foams in which a poly(oxyalkylene-oxyethylene)polyether polyol is used as a modifying agent having the number of functional groups and the molecular weight in specific ranges with the equivalent ratio of NCO/OH being in a specific range and containing a specific quantity of ethylene oxide. The use of this modifying agent provides urethane-modified polyisocyanurate foams exhibiting excellent fire resistance and adhesion to an object surface.Type: GrantFiled: January 5, 1982Date of Patent: July 12, 1983Assignee: Bridgestone Tire Co., Ltd.Inventors: Hiroshi Kaneda, Katsuhiko Arai, Akira Suzuki, Takashi Ohashi
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Patent number: 4383078Abstract: Alkali metal polyhydroxy lignin-cellulose polymer is produced by reacting an organic polyhydroxy compound with broken-down alkali metal lignin-cellulose polymer. The alkali metal polyhydroxy lignin-cellulose polymer will react with polyisocyanate to produce foam products which may be used for thermal or sound insulation.Type: GrantFiled: August 24, 1981Date of Patent: May 10, 1983Inventor: David H. Blount
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Patent number: 4374934Abstract: A select, low density semi-flexible foam polymer composition is prepared from a very select reaction mixture which is characterized by a foaming agent which consists essentially of water and is substantially free of fluorinated hydrocarbon compounds, and a relatively low reaction mixture NCO/OH index of from about 20 to about 70. The foam polymer composition is particularly useful in packaging fragile or shock-sensitive objects.Type: GrantFiled: March 30, 1981Date of Patent: February 22, 1983Assignee: Olin CorporationInventor: Robert J. Raynor
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Patent number: 4358619Abstract: The instant invention relates to an improved process for the production of formose from formaldehyde. The improvement resides in using relatively small quanities of basic lead compounds as catalysts for the condensation reaction of the formaldehyde and, at the same time, for controlling the pH-value. By following this technique, organic or inorganic bases which, hitherto, have normally been used for this purpose are no longer needed.Type: GrantFiled: February 22, 1979Date of Patent: November 9, 1982Assignee: Bayer AktiengesellschaftInventors: Ingo Stemmler, Hanns P. Muller, Kuno Wagner
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Patent number: 4341875Abstract: A two-part liquid composition capable of being mixed with a foaming agent and placed in a reaction injection molding apparatus to form a microcellular composition, which when cured yields a urethane product having improved flexural modulus properties. The composition is comprised of a part "A" which is comprised of an organic isocyanate, and a part "B" which is comprised of a base polyol, a catalyst, and a chain extending agent mixture comprised of a glycol and at least one high functionality supplemental polyol.Type: GrantFiled: December 5, 1979Date of Patent: July 27, 1982Assignee: Olin CorporationInventors: Robert L. Visger, Mark A. Plano
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Patent number: 4336340Abstract: Small particles of cellulose-containing plants are mixed with an alkali metal hydroxide, then heated to 150.degree. C. to 220.degree. C. while agitating, thereby producing a broken-down lignin-cellulose polymer which is then reacted with a substituted organic compound to produce an organic broken-down lignin-cellulose polymer.Type: GrantFiled: November 17, 1980Date of Patent: June 22, 1982Inventor: David H. Blount
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Patent number: 4317752Abstract: This invention relates to a process for preparing polyisocyanate lignin-cellulose plastics by reaction of a lignin-cellulose polymer with a compound having at least two isocyanate groups to produce a lignin-cellulose polyisocyanate prepolymer. The prepolymer is then reacted with an organic compound to produce a polyisocyanate cellulose plastic.Type: GrantFiled: September 8, 1980Date of Patent: March 2, 1982Inventor: David H. Blount
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Patent number: RE33290Abstract: Rigid polyurethane foams produced by reacting a polyol component having a special composition with an isocyanate component in the presence of a blowing agent, a reaction catalyst and a foam stabilizer with a mold release time of as short as 5.5 minutes or less, have remarkably low thermal conductivity of 12.5.times.10.sup.-3 Kcal/m.hr..degree.C. or less and a low density and are suitable as heat insulating materials for refrigerators and the like.Type: GrantFiled: January 19, 1989Date of Patent: August 7, 1990Assignee: Hitachi, Ltd.Inventors: Reishi Naka, Kazuyoshi Kuroishi