With Nitrogen Containing Reactant Patents (Class 521/163)
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Patent number: 6818675Abstract: A process for preparing a polyurethane foam is provided which comprises reacting a polyisocyanate and an active hydrogen-containing component, including water and an organic polyol, in the presence of a catalytically effective amount of a delayed action amine catalyst system, and optionally an organotin catalyst. The delayed action catalyst is composed of the reaction product of (a) one or more carboxylic acids having hydroxy and/or halo functionality; (b) one or more tertiary amine ureas; and, optionally, (c) a reactant selected from the group consisting of specific reactive tertiary amine(s), specific tertiary amine carbamate(s) and mixture thereof.Type: GrantFiled: August 6, 2002Date of Patent: November 16, 2004Assignee: General Electric CompanyInventors: Hassan El Ghobary, Louis Muller
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Patent number: 6808800Abstract: A rigid polyurethane foam is described which is preferably, while not exclusively, used for manufacturing composite building elements used in buildings or for manufacturing industrial constructions. The foam has a structure consisting of closed cells substantially free therein of optionally halogenated hydrocarbon foaming agents, having an adhesion strength to a supporting substrate, measured according to standards EN 1607, equal to or higher than 0.7 kg/cm2. The polyurethane foam may be obtained starting from at least one polyol and at least one isocyanate compound by using a water-based foaming agent entirely compatible with the strictest environmental requirements, and has good mechanical characteristics, characteristics of dimensional stability, characteristics of adhesion to a supporting substrate and, possibly, characteristics of fire resistance.Type: GrantFiled: March 8, 2001Date of Patent: October 26, 2004Assignee: Sixton Holdings S.A.Inventor: Giampaolo Tomasi
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Publication number: 20040198856Abstract: Rigid foams are made by reacting a polyisocyanate with an isocyanate-reactive composition which includes at least one isocyanate-reactive compound, preferably, an amine-initiated polyol and more preferably, an amine-initiated polyether polyol and a second, different polyol in the presence of a blowing agent composition which includes water and a catalyst composition which includes two different blowing catalysts, preferably, pentamethyldiethylenetriamine and bis(2-dimethylamino-ethyl)ether.Type: ApplicationFiled: April 1, 2003Publication date: October 7, 2004Inventors: Kerry A. Ingold, Raymond A. Yourd
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Patent number: 6800715Abstract: A polyurethane-polymer composition suitable for preparing a lightweight tire support includes at least one isocyanate, at least one polyol, and at least one chain extender. A polyurethane-polymer composition can also include an additive such as a catalyst, a filler, a surfactant, a colorant, and a mold-release agent. A lightweight tire support can be prepared from a polyurethane-polymer composition by, for example, reaction injection molding. Such a tire support desirably has temperature stability and load-bearing capability.Type: GrantFiled: February 7, 2003Date of Patent: October 5, 2004Assignee: Dow Global Technologies Inc.Inventors: Alan K. Schrock, Ralph D. Priester, Jr., Wayne R. Willkom, Robert E. O'Neill, Martin C. Cornell, Christopher P. Christenson
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Publication number: 20040186192Abstract: The subject invention provides a method of forming high resilience slabstock polyurethane foam having random cell structures to produce latex-like feel and characteristics. The method includes the first step of providing an isocyanate-reactive component and an isocyanate component to react with the isocyanate-reactive component. A first nucleation gas is provided under low pressure and is added into at least one of the isocyanate-reactive component and the isocyanate component to produce a first cell structure in the polyurethane foam. A second nucleation gas is provided under low pressure, being different than the first nucleation gas, and is added into at least one of the isocyanate-reactive component and the isocyanate component to produce a second cell structure in the polyurethane foam that is different than the first cell structure.Type: ApplicationFiled: March 19, 2003Publication date: September 23, 2004Applicant: BASF CorporationInventors: Theodore M. Smiecinski, Wassana Apichatachutapan, Todd J. Green, Thomas R. Benevenuti
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Publication number: 20040180979Abstract: The present invention relates to novel tertiary alkanolamines useful as catalysts for preparing polyurethane foams and as additives to reduce the dynamic surface tension of aqueous solutions.Type: ApplicationFiled: March 10, 2003Publication date: September 16, 2004Inventors: William R. Raymond, Juan Jesus Burdeniuc, Khalil Yacoub
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Patent number: 6767929Abstract: A catalyst for producing a polyurethane, comprising a dialkylaminoalkyl alcohol represented by the formula (I): R1R2N—X—OH (I) wherein each of R1 and R2 is independently an alkyl group having 1 to 4 carbon atoms; and X is a branched alkylene group having 4 to 8 carbon atoms; a process for producing a polyurethane, comprising reacting a polyol component with an isocyanate component in the presence of the above-mentioned catalyst for producing a polyurethane; and a process for producing a polyurethane foam, comprising reacting a polyol component with an isocyanate component in the presence of the above-mentioned catalyst for producing a polyurethane, and a compound having a primary amino group and a tertiary amino group in its molecule, and a blowing agent.Type: GrantFiled: June 17, 2002Date of Patent: July 27, 2004Assignee: Kao CorporationInventors: Atsushi Ishikawa, Mitsuru Sakai, Masayoshi Morii
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Patent number: 6765034Abstract: A flame-resistant and sound- and vibration-insulating member for a vehicle, which is a soft polyurethane foam formed by a reaction between an organic polyisocyanate component and a polyol component, wherein the organic polyisocyanate component includes as a major component a monomeric MDI and further includes a reaction product containing carbodiimide and/or uretone imine groups, the monomeric MDI containing 29-33% of NCO and including 1-45% by weight of 2,4′-diphenylmethane diisocyanate, while the polyol component includes at least 50% by weight of polyol having 2-8 functional groups and a molecular weight of 1000-10000, and wherein the soft polyurethane foam has a density of 40-150 kg/m3, a 50% compressive load of (5-60)×10−2N/mm2, a tensile strength of at least 120 kPa and an elongation of at least 50%, and exhibits flame resistance according to FMVSS-302. A process of manufacturing the flame-resistant and sound- and vibration-insulating member is also disclosed.Type: GrantFiled: July 18, 2002Date of Patent: July 20, 2004Assignee: Tokai Rubber Industries, Ltd.Inventors: Kiyomi Nishida, Toyofumi Shimizu, Takayuki Shimizu, Eiji Motomura, Takuya Matsumoto
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Patent number: 6759363Abstract: Activators with reduced volatility that are liquid at room temperature are obtained as the reaction product of (A) a secondary amine or primary alcohol having at least one tertiary amine group, (B) a polyisocyanate of the diphenylmethane series having a functionality of from 2.5 to 4.0 and an OH-functional reactive component capable of addition to isocyanate. These activators are useful for the production of polyurethane foams having improved emission behavior.Type: GrantFiled: November 9, 2001Date of Patent: July 6, 2004Assignee: Bayer AktiengesellschaftInventors: Peter Haas, Dirk Wegener, Hartwig Grammes
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Patent number: 6740686Abstract: The invention concerns a method for making a polyurethane foam by reacting at least a polyester polyol with at least a polyisocyanate in the presence of a foaming agent and a catalytic agent, such a polyester polyol having been previously obtained by reacting a reactive acid A comprising at least an aliphatic or aromatic polyacid with functionality not less than 2 with at least a polyol P2 with functionality equal to 2 and at least an aliphatic or aromatic polyacid with functionality not less than 2 with at least a polyol P2 with functionality equal to 2 and at least a polyol P3 with functionality not less than 3, being thereafter called AP2P3, wherein the catalytic agent at least partly consists of at least one amine polyester polyol AP2P3, wherein at least part of polyol P3 consists of at least a polyoxyalkylene polyalkanolamine having at least a tertiary amine function, the alkanol radicals of said polyalkanolamine being C1-C6, the alkylene oxide units being C2-C4 and the statistical mean of the number N oType: GrantFiled: November 27, 2000Date of Patent: May 25, 2004Assignee: Crompton CorporationInventors: Denis Ghesquiere, Remy Dumont
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Publication number: 20040029986Abstract: A process for preparing a polyurethane foam is provided which comprises reacting a polyisocyanate and an active hydrogen-containing component, including water and an organic polyol, in the presence of a catalytically effective amount of a delayed action amine catalyst system, and optionally an organotin catalyst.Type: ApplicationFiled: August 6, 2002Publication date: February 12, 2004Applicant: CROMPTON CORPORATIONInventors: Hassan El Ghobary, Louis Muller
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Publication number: 20030236314Abstract: The present invention relates to polyol compositions which can be used to produce dimensionally stable, low density water-blown rigid foams which have acceptable compressive strengths and acceptable k-factors. In one embodiment of the present invention, the polyol compositions are composed of at least one aromatic amine-initiated polyether polyol and at least one polyether polyol having a functionality greater than or equal to 2.5 in which at least 50% by weight of the polyol composition is aromatic amine-initiated polyether polyol and in which no more than 50% by weight of the polyol composition is polyether polyol having a functionality greater than or equal to 2.5.Type: ApplicationFiled: June 24, 2002Publication date: December 25, 2003Inventors: Karl W. Haider, David D. Steppan, Michael E. McGregor, Kerry A. Ingold, Vincent M. Mautino, Michael A. Dobransky
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Patent number: 6649726Abstract: The two-component type polyurethane composition according to the present invention is obtained from a principal component containing a compound having an isocyanate group and a curing agent containing a compound having active hydrogen, and is characterized in that both the principal component and the curing agent contain substantially no thixotropic agent, the mixture of the principal component and the curing agent has a specific thixotropy-developing time and a specific slump, the active hydrogen compound has a specific flash point, and that the mass change of the two-component type polyurethane composition before/after boiling in boiling water under specific conditions is in a specific range.Type: GrantFiled: August 4, 2000Date of Patent: November 18, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Hisashi Kawanabe, Hiroaki Sakaguchi, Kazuto Usaka, Takashi Abe
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Patent number: 6627671Abstract: Urethane molded products for polishing pad comprise two types of cells having different sizes in urethane molded products formed by mixing and curing an isocyanate-terminated urethane prepolymer and an active hydrogen-containing compound. The molded products may be made by a procedure comprising mixing expanded microballoons or non-expanded, thermally expandable microspheres and water with the isocyanate-terminated urethane prepolymer and active hydrogen-containing compound and curing the mixture.Type: GrantFiled: August 27, 1999Date of Patent: September 30, 2003Assignee: Fuji Spinning Co., Ltd.Inventors: Katushi Kihara, Yoshimi Mochizuki
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Patent number: 6590003Abstract: The invention provides a process for the production of flexible to semi-rigid polyurethane shaped articles with a compacted edge zone of given hardness and a significantly more flexible cell core, so-called integral foams, in which non-combustible mixtures of fluoroalkanes which comprise 1,1,1,3,3-pentafluorobutane (R 365mfc) are employed as physical blowing agents.Type: GrantFiled: June 6, 2002Date of Patent: July 8, 2003Assignee: Bayer AktiengesellschaftInventors: Norbert Eisen, Daniel Seidlitz
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Patent number: 6548616Abstract: A polyurethane-polymer composition suitable for preparing a lightweight tire support includes at least one isocyanate, at least one polyol, and at least one chain extender. A polyurethane-polymer composition can also include an additive such as a catalyst, a filler, a surfactant, a colorant, and a mold-release agent. A lightweight tire support can be prepared from a polyurethane-polymer composition by, for example, reaction injection molding. Such a tire support desirably has temperature stability and load-bearing capability.Type: GrantFiled: December 13, 2000Date of Patent: April 15, 2003Assignee: Dow Global Technologies Inc.Inventors: Alan K. Schrock, Ralph D. Priester, Jr., Wayne R. Willkom, Robert E. O'Neill, Martin C. Cornell, Christopher P. Christenson
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Patent number: 6534555Abstract: Provided are catalyst systems which produce flexible polyurethane polyester foams that are color stable, are lower in odor, and uses less catalysts than current most commonly practiced technology. The use of lower amounts of catalysts with low vapor pressure reduces worker exposure to alkaline corrosive materials, reduces pollution through less pounds of volatile organic chemicals (VOC's) and is less expensive.Type: GrantFiled: September 10, 2001Date of Patent: March 18, 2003Assignee: Huntsman Petrochemical CorporationInventors: Ernest L. Rister, Jr., Robert A. Grigsby, Jr., Robert L. Zimmerman
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Publication number: 20030004220Abstract: A catalyst for producing a polyurethane, comprising a dialkylaminoalkyl alcohol represented by the formula (I):Type: ApplicationFiled: June 17, 2002Publication date: January 2, 2003Inventors: Atsushi Ishikawa, Mitsuru Sakai, Masayoshi Morii
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Patent number: 6495722Abstract: Provided herein are polyurethane foams which may be prepared by spray techniques. The foams of the invention are prepared using conventional isocyanates and a novel Mannich condensate polyol having a hydroxy number in the range of 250-340 and a viscosity of 3500 cps or less, and wherein the Mannich condensate polyol is derived from nonylphenol, formaldehyde, an alkanolamine, and propylene oxide as the sole alkoxylating agent. Polyurethane foams prepared according to the invention possess superior physical properties over sprayed polyurethane foams prepared using Mannich condensate polyols which are made using mixtures of propylene oxide and ethylene oxide.Type: GrantFiled: September 17, 2001Date of Patent: December 17, 2002Assignee: Huntsman Petrochemical CorporationInventors: Robert L. Zimmerman, Marshall P. Devine, Patrick L. Weaver
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Patent number: 6458860Abstract: Provided herein are catalyst systems useful for providing polyurethane foam products which exhibit low fogging characteristics while possessing favorable overall physical properties when used as interior components of automobiles and other motorized vehicles.Type: GrantFiled: January 7, 2002Date of Patent: October 1, 2002Assignee: Huntsman Petrochemical CorporationInventors: Heiko H. Humbert, Robert Allison Grigsby, Jr.
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Patent number: 6455606Abstract: A polyurethane foam which is obtained by reacting an addition-polymerizable active hydrogen component comprising a compound having a group containing active hydrogen and an addition-polymerizable functional group or comprising both this compound and a compound containing at least 2.5 groups (on the average) containing active hydrogen and not containing addition-polymerizable functional groups with an organic polyisocyanate in the presence or absence of at least one auxiliary selected from the group consisting of foaming agents and additives to polymerize the addition-polymerizable functional group and simultaneously form a polyurethane, and which has a structure in which the chains formed by the addition polymerization have been cross-linked to the polyurethane chains. The polyurethane foam is useful as a rigid polyurethane foam excellent in hardness, dimensional stability, etc. and usable as a heat insulator, shock-absorbing material, synthetic wood, etc.Type: GrantFiled: October 1, 1999Date of Patent: September 24, 2002Assignee: Sanyo Chemical Industries, Ltd.Inventors: Motonao Kaku, Yasushi Kumagai, Toru Nakanishi, Tatsuroh Yanagi, Tsuyoshi Tomosada, Kunikiyo Yoshio, Hajime Akiyama, Sadao Kubota, Jiro Ryugo, Yuichi Sasatani
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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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Publication number: 20020115812Abstract: A flame retardant composition that is composed of red phosphorus and melamine or a derivative thereof in amounts satisfying a specified ratio for use in the production of polyurethanes. The polyurethanes produced with this flame retardant composition are particularly useful in the production of rail vehicles.Type: ApplicationFiled: May 18, 1999Publication date: August 22, 2002Inventors: GEZA AVAR, THOMAS MUNZMAY, ANDREAS RUCKES, INGO ZAPPEL
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Patent number: 6433032Abstract: Process for the preparation of open celled rigid polyurethane or urethane-modified polyisocyanurate foams by reaction of a polyfunctional isocyanate-reactive composition with a polyisocyanate composition comprising a prepolymer of NCO-value 21-30% based on a high molecular weight oxyethylene-containing polyol.Type: GrantFiled: March 30, 1999Date of Patent: August 13, 2002Assignee: Imperial Chemical Industries PLCInventor: Alan James Hamilton
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Patent number: 6433033Abstract: The high-durability flexible polyurethane cold cure molded foam of the invention has an overall density of not less than 35 kg/m3 and not more than 45 kg/m3 and a wet heat compression set of not more than 15%, and preferably has a hardness change ratio, as determined in a repeated compression test, of not more than 15%. This foam can be obtained by the process of the invention. The process of the invention is a process for producing a flexible polyurethane cold cure molded foam obtained from a polyol and/or a polymer polyol containing dispersed polymer microparticles obtained by radical polymerizing a compound having an unsaturated bond in the polyol, water, a catalyst and a polyisocyanate, wherein the polyol is a polyol synthesized by the use of a catalyst containing at least one compound selected from the group consisting of a compound having a nitrogen-phosphorus double bond, cesium hydroxide and rubidium hydroxide.Type: GrantFiled: February 10, 2000Date of Patent: August 13, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Masahiro Isobe, Kazuhiko Ohkubo, Seijiro Sakai
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Patent number: 6420446Abstract: Polyurethanes synthesized from sorbitol-branched polyester made by esterification of a diacid (or anhydride thereof diol, and sorbitol (or mixtures of same with other polyols).Type: GrantFiled: March 27, 2000Date of Patent: July 16, 2002Assignee: CK WitcoInventor: Wally Liyuan Chang
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Patent number: 6387972Abstract: An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and a polyfunctional isocyanate-reactive component wherein said reactions are conducted in the presence of catalysts composed of (a) a specific reactive tertiary amine compound selected from the group consisting of bis(dimethylaminopropyl)amino-2-propanol, bis(dimethylaminopropyl)amine, dimethylaminopropyldipropanolamine, bis(dimethylamino)-2-propanol, N,N,N′-trimethyl-N′-hydroxyethyl-bis(aminoethyl)ether and mixtures thereof; and (b) at least one carboxylic acid salt of the specific reactive tertiary amine compound selected from the group consisting of hydroxy-carboxylic acid salts and halo-carboxylic acid salts.Type: GrantFiled: February 15, 2001Date of Patent: May 14, 2002Assignee: Crompton CorporationInventors: Hassan El Ghobary, Louis Muller
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Publication number: 20020052425Abstract: A polyurethane foam which is obtained by reacting an addition-polymerizable active hydrogen component comprising a compound having a group containing active hydrogen and an addition-polymerizable functional group or comprising both this compound and a compound containing at least 2.5 groups (on the average) containing active hydrogen and not containing addition-polymerizable functional groups with an organic polyisocyanate in the presence or absence of at least one auxiliary selected from the group consisting of foaming agents and additives to polymerize the addition-polymerizable functional group and simultaneously form a polyurethane, and which has a structure in which the chains formed by the addition polymerization have been cross-linked to the polyurethane chains. The polyurethane foam is useful as a rigid polyurethane foam excellent in hardness, dimensional stability, etc. and usable as a heat insulator, shock-absorbing material, synthetic wood, etc.Type: ApplicationFiled: October 1, 1999Publication date: May 2, 2002Inventors: MOTONAO KAKU, YASUSHI KUMAGAI, TORU NAKANISHI, TATSUROH YANAGI, TSUYOSHI TOMOSADA, KUNIKIYO YOSHIO, HAJIME AKIYAMA, SADAO KUBOTA, JIRO RYUGO, YUICHI SASATANI
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Patent number: 6380274Abstract: A composition having the formula: wherein R is a linear alkyl, branched alkyl, cycloalkyl, polycyclic alkyl, alkylaminoalkyl, or alkyloxyalkyl group having 1 to 20 carbon atoms and at least one primary, secondary, or tertiary amino functional group. The composition is effective as a catalyst in the production of polyurethanes.Type: GrantFiled: August 8, 2001Date of Patent: April 30, 2002Assignee: Air Products and Chemicals, Inc.Inventors: Ning Chen, Richard Paul Underwood, Mark Leo Listemann
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Patent number: 6362302Abstract: A method of producing three dimensional polyurethane shapes by spray molding a quasi-gel like polymer precursor composition that is first mixed and then sprayed by a spray gun. The spray coating of quasi-gel polymer precursor composition subsequently cures to form a molded polyurethane polymer shape. Such artificial three dimensional shapes may include rocks, rock walls or faces, tree stumps or limbs, animals, architectural features or settings in which a certain visual appearance is desired.Type: GrantFiled: November 29, 1999Date of Patent: March 26, 2002Inventor: Carl E. Boddie
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Patent number: 6355700Abstract: An insulated structure is formed by injection of a foamed thermal-insulating material created by foaming into a space between a plastic board and metal plate with a disposition of copper pipes. A non-halogenated organophosphorus compound having a molecular weight over 150 as an additive with an OH group as a functional group is mixed with the raw materials of the foamed thermal-insulating material including polyol, a foam stabilizer, a catalyst, a foaming agent having at least one component of hydrocarbon, and an organic polyisocyanates. By adding a non-halogenated organophosphorus compound, which has a molecular weight over 150 as an additive with an OH group as a functional group, the burning rate of the foamed thermal-insulating material becomes the same as that of the foamed thermal-insulating material which uses CFC11 as a foaming agent.Type: GrantFiled: April 29, 1999Date of Patent: March 12, 2002Assignee: Matsushita Refrigeration CompanyInventors: Kazutaka Uekado, Yoshiyuki Tsuda, Hideo Nakamoto, Tomohisa Tenra
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Publication number: 20020025990Abstract: The present invention provides a flexible polyurethane foam having good resistance to wet heat aging and resistance to ozone deterioration and a speaker edge having an excellent waterproofness comprising such a flexible polyurethane foam. As a polyol, a polyol component obtained by mixing a polyester polyol having an excellent compatibility with polyether polyol such as adipate of a long-chain alkylene glycol having at least 5 carbon atoms with a foaming agent, a catalyst, a foam stabilizer, etc. is reacted with a polyisocyanate to obtain a flexible polyurethane foam having good resistance to wet heat aging and resistance to ozone deterioration. Further, the incorporation of a specific aromatic secondary amine compound, a monofunctionally-terminated compound and an ultraviolet absorbent in the foam composition makes it possible to obtain a flexible foam having better resistance to ozone deterioration and weather resistance.Type: ApplicationFiled: August 17, 2001Publication date: February 28, 2002Applicant: INOAC CORPORATIONInventors: Naoshi Fujita, Minoru Suzuki, Kenichi Katoh, Satoshi Kondo
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Patent number: 6346559Abstract: A polyurethane foam and associated production process, in particular flexible to semi-hard block foams or soft molded foams, using polyesters or polyethers as polyols. A carbamate, or a mixture of carbamates, is used simultaneously as propellant and as catalyst, wherein the carbamate or the carbamates have the general Formula I wherein: R1 and R2 represent the same or different alkyl radicals, R3 and R4 represent the same or different radicals and denote hydrogen or alkyl radicals, R5 denotes hydrogen, an alkanol radical, a polyether monool radical or the alkyl radical, characterized by X and n represents 2 or 3.Type: GrantFiled: November 3, 2000Date of Patent: February 12, 2002Assignee: Otto Bock Schaumstoffwerke GmbH & Co. KGInventors: Karl-Heinz Thiele, Peter Gansen
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Publication number: 20010051666Abstract: The invention relates to thermally expandable microspheres comprising a thermoplastic polymer shell and a propellant entrapped therein, wherein said polymer shell is made of a homo- or co-polymer from ethylenically unsaturated monomers comprising more than 85 wt % of nitrile containing monomers and said propellant comprises at least 50 wt % of isooctane. The invention further relates to preparation and use of expandable microspheres, a composition comprising expandable microspheres and articles comprising foamed material containing expanded microspheres.Type: ApplicationFiled: April 25, 2001Publication date: December 13, 2001Inventors: Anna Kron, Peter Sjogren, Odd Bjerke
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Patent number: 6316513Abstract: A process for the production of rigid polyurethane foams having low thermal conductivity is described.Type: GrantFiled: March 8, 1999Date of Patent: November 13, 2001Assignee: Bayer AktiengesellschaftInventors: Dennis McCullough, Torsten Heinemann, Norbert Eisen, Walter Klän
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Publication number: 20010036973Abstract: The invention relates to a halogen-free, flame-retardant rigid polyurethane foam, wherein a combination of oxalkylated alkylphosphonic acids and ammonium polyphosphate is present as flame retardant, and to a process for its production.Type: ApplicationFiled: March 27, 2001Publication date: November 1, 2001Applicant: Clariant GmbHInventors: Anne Witte, Wilfried Krieger
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Patent number: 6303669Abstract: The present invention provides a flexible polyurethane foam having good resistance to wet heat aging and resistance to ozone deterioration and a speaker edge having an excellent waterproofness comprising such a flexible polyurethane foam. As a polyol, a polyol component obtained by mixing a polyester polyol having an excellent compatibility with polyether polyol such as adipate of a long-chain alkylene glycol having at least 5 carbon atoms with a foaming agent, a catalyst, a foam stabilizer, etc. is reacted with a polyisocyanate to obtain a flexible polyurethane foam having good resistance to wet heat aging and resistance to ozone deterioration. Further, the incorporation of a specific aromatic secondary amine compound, a monofunctionally-terminated compound and an ultraviolet absorbent in the foam composition makes it possible to obtain a flexible foam having better resistance to ozone deterioration and weather resistance.Type: GrantFiled: April 30, 1997Date of Patent: October 16, 2001Assignee: Inoac CorporationInventors: Naoshi Fujita, Minoru Suzuki, Kenichi Katoh, Satoshi Kondo
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Patent number: 6288133Abstract: This invention relates to a foamable composition comprising at least two parts. More specifically, the first part comprises at least one polyol, at least one gelling agent, and at least one blowing agent wherein the first part comprises an effective amount of hydrophobic ingredients and a second part comprising at least one isocyanate. A foam mass can be prepared by a method of combining a polyol component with an isocyanate component substantially free of urethane prepolymer and applying the mixture to a void or substrate. The invention also relates to methods of using certain polyurethane compositions in the repair of surface defects or for the reinforcement of structural members such as spike holes left after spike removal from railroad ties during road bed maintenance or repair. This invention further relates to a method of foaming certain polyurethane compositions in the presence of water.Type: GrantFiled: September 4, 1998Date of Patent: September 11, 2001Assignee: H. B. Fuller Licensing & Financing Inc.Inventor: James A. Hagquist
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Patent number: 6274639Abstract: An improved durable, low density, high build polyurethane coating is disclosed, as well as its method of manufacture. A slow reacting polyisocyanate is combined with a polyol so as to form a uniform mixture with an extremely long pot life. The low viscosity uniform mixture can then be sprayed onto a substrate using a conventional spray gun. A polyurethane catalyst is introduced after formation of the uniform mixture, preferably via a second spray nozzle so that catalyst is externally mixed into the polyisocyanate/polyol spray stream. This is a 100%, or near 100%, solids system so that there is very low volatile organic compound emissions.Type: GrantFiled: April 20, 2000Date of Patent: August 14, 2001Assignee: Lockheed Martin CorporationInventors: James E. Foreman, Douglas R. Dowell, Bobby G. Isler
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Patent number: 6248801Abstract: A method for making flexible polyurethane foam in which a polyisocyanate is reacted with a polyol in the presence of a urethane catalyst, a blowing agent, optionally a silicone surfactant cell stabilizer, and a cell opening additive. The cell opening additive comprises an active methylene or methine compound which also contains a tertiary amine. Preferred cell opening additives are 2-cyano-N-[3-(dimethylamino)-propyl]acetamide and (NC)CH2C(O)OCH2CH2N(CH3)CH2CH2OCH2CH2N(CH3)2.Type: GrantFiled: November 12, 1999Date of Patent: June 19, 2001Assignee: Air Products and Chemicals, Inc.Inventor: Ingrid Kristine Meier
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Patent number: 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: 6153659Abstract: 3-{N-[2-(N',N'-dimethylamino ethoxy)ethyl]-N-methylamino}propionamide is a new compound which is useful as a catalyst in the production of polyurethane foams.Type: GrantFiled: December 7, 1999Date of Patent: November 28, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Richard Van Court Carr, Ning Chen, Mark Leo Listemann, Richard Paul Underwood
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Patent number: 6136879Abstract: A soft polyurethane foam which has a rebound resilience percentage of not higher than 30% and whose temperature dependency of a compression force deflection that is represented by a difference between a 25%-compression force deflection value at -20.degree. C. and a 25%-compression force deflection value at +20.degree. C. is not larger than 0.030 kg/cm.sup.2.Type: GrantFiled: October 23, 1998Date of Patent: October 24, 2000Assignees: Tokai Rubber Industries, Ltd., Mitsui Chemicals, Inc.Inventors: Kiyomi Nishida, Shuichi Takahashi, Kunio Sasaoka, Masashi Obata
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Patent number: 6130267Abstract: The invention provides a fire retardant composition comprising a dispersion of a solid fire retardant such as melamine, ammonium polyphosphate or guanidine carbonate in a liquid organic polyisocyanate which contains dispersed polymer particles. The preferred content of solid fire retardant is from 10 to 100% by weight and the preferred content of polymer particles is from 2 to 30% by weight. The compositions of the invention are suitable for the preparation of flexible and rigid polyurethane foams.Type: GrantFiled: July 13, 1992Date of Patent: October 10, 2000Assignee: Imperial Chemical Industries PLCInventors: Ernst Otto Dueber, Louis Muller
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Patent number: 6084001Abstract: An improved durable, low density, high build polyurethane coating is disclosed, as well as its method of manufacture. A slow reacting polyisocyanate is combined with a polyol so as to form a uniform mixture with an extremely long pot life. The low viscosity uniform mixture can then be sprayed onto a substrate using a conventional spray gun. A polyurethane catalyst is introduced after formation of the uniform mixture, preferably via a second spray nozzle so that catalyst is externally mixed into the polyisocyanate/polyol spray stream. This is a 100%, or near 100%, solids system so that there is very low volatile organic compound emissions.Type: GrantFiled: April 25, 1996Date of Patent: July 4, 2000Assignee: Lockheed Martin CorporationInventors: James E. Foreman, Douglas R. Dowell, Bobby G. Isler
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Patent number: 6063824Abstract: A microcellular PU elastomer having improved dynamic-mechanical properties and based on an isocyanate component consisting essentially of 4,4'-MDI and also further customary constituents has, after heating at from 100 to 120.degree. C. for from 8 to 24 hours, a melting range of from 130.degree. C. as the minimum lower limit to 230.degree. C. as a minimum upper limit, measured by differential scanning calorimetry (DSC) at a heating rate of 20.degree. C./min, and a urea content of from 14 to 18% by weight.A process is also provided for preparing such a microcellular PU elastomer having improved dynamic mechanical properties. The microcellular PU elastomers can be used for producing damping elements.Type: GrantFiled: November 18, 1998Date of Patent: May 16, 2000Assignee: BASF AktiengesellschaftInventors: Ruediger Krech, Udo Rotermund, Heinz Bollmann, Renate Hempel, Wolfgang Scholz, Manfred Genz
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Patent number: 6060531Abstract: The invention relates to a process for the production of polyurethane foams by reactinga) at least one organic polyisocyanate withb) at least one polyalkylene-polyol (b1) having a hydroxyl number of from 30 to 500, obtainable by alkoxylation of at least one initiator molecule from the group consisting of N,N'-bis(3-aminopropyl)ethylenediamine, tripropylenetetramine and tetrapropylenepentamine using at least one alkylene oxide, preferably ethylene oxide and/or 1,2-propylene oxide, or mixtures of the polyoxyalkylene polyols (b1) and other polyhydroxyl compounds having a functionality of from 2 to 8 and a hydroxyl number of from 15 to 500, andc) if desired, chain extenders and/or crosslinking agents,in the presence ofd) blowing agents and, if desired,e) catalysts andf) additives,and to the novel polyoxyalkylene-polyols (b1) which can be used for this purpose.Type: GrantFiled: September 25, 1998Date of Patent: May 9, 2000Assignee: BASF AktiengesellschaftInventors: Peter Horn, Ludwig Jung, Harald Larbig, Rolf Lebkucher, Gerhard Lehr
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Patent number: 6037496Abstract: 3-{N-[2-(N',N'-dimethylamino ethoxy)ethyl]-N-methylamino}propionamide is a new compound which is useful as a catalyst in the production of polyurethane foams.Type: GrantFiled: March 26, 1999Date of Patent: March 14, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Richard Van Court Carr, Ning Chen, Mark Leo Listemann, Richard Paul Underwood
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Patent number: 6020392Abstract: A method for making a polyurea microcellular elastomeric foam by reacting an organic polyisocyanate with a di-(aminobenzoate) ester of an oligomeric polyol in the presence of a blowing agent and, optionally, urethane catalyst and cell stabilizing agent.Type: GrantFiled: September 4, 1998Date of Patent: February 1, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Sandra Ann Kushner, John William Miller, James Douglas Tobias
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Patent number: 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