With Non -c-x-c- Containing Reactant Patents (Class 521/176)
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Patent number: 5189117Abstract: A polyurethane composition useful as a molding composition is prepared from (1) an adduct derived from the reaction product of a polyepoxide and a single epoxide reactive group-containing compound, or the reaction product of a monoglycidyl ether and an epoxide reactive groups-containing compound, (2) a polyisocyanate, and (3) optionally an isocyanate-reactive compound; wherein at least one of the adduct or polyisocyanate contains a rodlike mesogenic moiety.Type: GrantFiled: August 3, 1990Date of Patent: February 23, 1993Assignee: The Dow Chemical CompanyInventor: Robert E. Hefner, Jr.
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Patent number: 5189068Abstract: A process for the preparation of cellular plastics, preferably hard structural polyurethane foams, by the polyisocyanate polyaddition process involves reactinga) an organic and/or modified organic polyisocyanate withb) at least one high-molecular-weight compound containing at least two reactive hydrogen atoms and, if desired,c) a low-molecular-weight chain extender and/or cross-linking agent,in the presence ofd) a blowing agent from the group comprising tertiary alcohols (di), preferably tertiary butanol, or a mixture of at least one tertiary alcohol (di) and water (dii),e) a catalyst and, if desired,f) assistants and/or additives.Type: GrantFiled: July 20, 1992Date of Patent: February 23, 1993Assignee: BASF AktiengesellschaftInventors: Ralf Boehme, Otto Volkert
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Patent number: 5182310Abstract: The present invention refers to isocyanate-reactive compositions containing hindered phenolic antioxidants having a molecular weight of at least 700. These compositions, when used to prepare flexible polyurethane foams, especially slabstock foam, provide foams which exhibit a significant reduction of scorch.Type: GrantFiled: July 25, 1991Date of Patent: January 26, 1993Assignee: Dow Chemical CompanyInventors: Richard G. Skorpenske, Alan K. Schrock
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Patent number: 5179132Abstract: A pad for an air bag device comprising polyurethane material having elongation ratios of 60% or more at 85.degree. C., and 40% or more at -35.degree. C., respectively. The polyurethane material is obtained through reaction of isocyanate mainly formed of diphenylmethane diisocyanate, polyether type polyol with molecular weight of 3,000-8,000 and the functional group number of 2-2.5, and the diol type cross-linking agent with molecular weight of 110 or less.Type: GrantFiled: October 4, 1991Date of Patent: January 12, 1993Assignee: Toyoda Gosei Co., Ltd.Inventors: Hisashi Mizuno, Masahiro Takimoto
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Patent number: 5171759Abstract: Polymer polyol compositions are provided which are useful for the production of flexible polyurethane foams. The polymer polyol compositions are composed of (1) a high functionality polyol, (2) a subsidiary polyalkylene oxide high in polyoxyethylene content and (3) a stably dispersed polymer. The latter component is formed by in situ polymerization of low molecular weight compounds within components (1) and/or (2) used in making the polymer polyol composition. The polymer polyol compositions provide stable and non-shrinking, free-rise foam at high water levels and over a wider crosslinker and index range permitting increased density and load latitude relative to commercial high resilience polymer polyols. A process for their use and foams and articles prepared therefrom are also provided.Type: GrantFiled: September 4, 1990Date of Patent: December 15, 1992Assignee: Arco Chemical Technology, L.P.Inventor: Stanley L. Hager
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Patent number: 5166183Abstract: The present invention is directed to an integral skin foam prepared by reacting a specific isocyanate, a specific isocyanate reactive component and water as the only blowing agent.Type: GrantFiled: April 16, 1991Date of Patent: November 24, 1992Assignees: Miles Inc., Bayer AGInventors: Sergio Franyutti, Klaus Brecht
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Patent number: 5147898Abstract: The present invention is a process for producing a rigid foam by reacting an active hydrogen compound containing an active hydrogen compound containing in its molecular structure a group of a neutralized salt or an alkoxide and a polyisocyanate compound in the presence of a halogenated hydrocarbon blowing agent and an assisting agent such as a catalyst.The active hydrogen compound containing in its molecular structure a group of a neutralized salt or an alkoxide and other active hydrogen compounds are preferably polyols, particularly polyether polyols respectively.The present invention has solved a problem of deterioration of the physical properties, which is problematic in a case where a rigid foam is produced by using a halogenated hydrocarbon blowing agent having hydrogen atoms, and is capable of producing a rigid foam equivalent to a conventional rigid foam obtained by using a halogenated hydrocarbon blowing agent having no hydrogen atoms.Type: GrantFiled: March 11, 1991Date of Patent: September 15, 1992Assignee: Asahi Glass Company Ltd.Inventor: Joichi Saito
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Patent number: 5128381Abstract: Disclosed herein is a polyurethane foam for cushioning materials. The polyurethane foam is formed by reacting a mixture of a polyol component, a polyisocyanate component and other optional components. The polyol component contains a mixed polyol which is composed of a low-hydroxyl-number polyol having a hydroxyl number of 30-80 and a high-hydroxyl-number polyol having a hydroxyl number of 350-600 and has an average hydroxyl number of 120-170. The mixture may additionally contain a plasticizer component containing at least one kind of plasticizer having one active hydrogen atom per molecule.Type: GrantFiled: December 27, 1990Date of Patent: July 7, 1992Assignees: Achilles Corporation, Honda Giken Kogyo Kabushiki KaishaInventors: Kouichi Tane, Katsuya Motojima, Yasumasa Sawachika, Tetsuya Oda, Yoshio Sakaguchi
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Patent number: 5122548Abstract: This invention relates to elastomeric polyisocyanate-based polymers, particularly polyurethane elastomeric polymers, prepared from polyol compositions comprising a polyoxyalkylene polyol having a hydroxyl equivalent weight of from about 800 to about 3000 and containing from 10 to 40 weight percent polymerized ethylene oxide wherein the ethylene oxide is distributed as a plurality of internal polyoxyethylene blocks having a molecular weight of from about 176 to about 600, and a polyoxyethylene cap use of such polyols. Polyols provides for polymers exhibiting desirable physical properties including good abrasion wear resistance.Type: GrantFiled: March 23, 1990Date of Patent: June 16, 1992Assignee: The Dow Chemical CompanyInventors: Rene Broos, Johan A. Thoen, Richard J. Elwell
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Patent number: 5120816Abstract: The strength and integrity of hydrophilic polyurethane resins prepared by reacting a diol component, an organic chain extender and an organic diisocyanate are improved by critical selection of the diol component, the amount of water in the reaction mixture and the mole rations of the reactants. The diol component is at least one of (1) a long chain poly(oxyethylene) glycol of molecular weight above 2500 and (2) a medium chain poly(oxyethylene) glycol or polyester glycol of 250-2500 molecular weight. The chain extender is a difunctional compound having a molecular weight of less than 250. The amount of water in the reaction mixture is 0.5 to 2.5 weight % and the urea content of the resins is from about 13.6 to 33.7 weight %.Type: GrantFiled: July 24, 1990Date of Patent: June 9, 1992Assignee: Tyndale Plains-Hunter Ltd.Inventors: Francis E. Gould, Christian W. Johnston
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Patent number: 5109035Abstract: The present invention is directed to a process of thermoplastically molding a specific foam composition. The composition is formed by reacting an isocyanate and a relatively low molecular weight tri or higher polyol in the presence of a blowing agent.Type: GrantFiled: December 17, 1990Date of Patent: April 28, 1992Assignee: Bayer AktiengesellschaftInventors: Joachim Wagner, Werner Rasshofer, Thomas Elsner, Hans-Albrecht Freitag
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Patent number: 5093380Abstract: The present invention relates to a polyurethane flexible foam having a resonant frequency of not higher than 3.5 Hz and a method for producing such a polyurethane flexible foam.The polyurethane flexible foam of the present invention is obtained by using at least one member selected from a specific polyoxyalkylene polyol and a polymer-dispersed polyol containing said polyoxyalkylene polyol as the matrix and a polyisocyanate compound as the main reactive materials, and it is a polyurethane flexible foam having a resonant frequency of not higher than 3.5 Hz.Such a polyurethane flexible foam is obtained by using a polyoxyalkylene polyol with both the hydroxyl value (X mgKOH/g) and the total unsaturation degree (Y meq/g) being particularly low, or a polymer-dispersed polyol containing such a polyoxyalkylene polyol as the matrix.Type: GrantFiled: August 15, 1990Date of Patent: March 3, 1992Assignee: Asahi Glass Company, Ltd.Inventors: Hiromitsu Takeyasu, Tsunehisa Sonobe, Yoshiyuki Yamaguchi, Takao Doi
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Patent number: 5082868Abstract: A method for the preparation of rigid polyurethane and/or polyisocyanurate foams is disclosed. The foams are produced by the reaction of at least difunctional polyisocyanates, a polyol with 3 to 8 hydroxyl groups, said polyol having a hydroxyl number of about 150 to 800, catalysts, blowing agents and foam stabilizers, which are devoid of silicon atoms, as well as, optionally, conventional additives such as flame retardants and chain extenders. The foam stabilizers are copolymers of vinyl monomers and allyl- or methallyl polyoxalkylene ethers. The mole ratio of the monomers is 1:1 to 10:1.The foams thus produced exhibit an improved burning behavior, good surface properties and outstanding thermal insulation effects. The stabilizers increase the solubility of the halocarbon blowing agents in the foaming formulation.Type: GrantFiled: July 21, 1989Date of Patent: January 21, 1992Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Jurgen Fock, Volker Mohring
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Patent number: 5077330Abstract: A water reaction synthesis with polyoxyethylene diol, diisocyanate and dibutyltin bis lauryl mercaptide produces a high molecular weight thermoplastic polyurethane-urea linear polymer with surface resistivity 10.sup.11 -10.sup.6 ohm/sq. Thermoplastic and/or elastomeric antistatic compositions containing other melt processable polymers and/or filler, and the polymer exhibit permanent protection. Antistatic protection can be increased when the polymer complexes with a metal salt such as lithium chloride, or lithium acetate.Type: GrantFiled: May 4, 1990Date of Patent: December 31, 1991Assignee: Armstrong World Industries, Inc.Inventors: Wendell A. Ehrhart, Nowaf Halout, Kenneth K. Ko, David A. Smith
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Patent number: 5059634Abstract: A polyurethane composition for use in RIM processes which composition comprises an MDI-polyol prepolymer, an aromatic diamine chain extender and a "cold break"-reducing additive to prevent "cold break" and to increase the flexual modulus of the polymer, which additive comprises triethanol amine or a triethanol amine-ethylene oxide end cap reaction product.Type: GrantFiled: February 9, 1990Date of Patent: October 22, 1991Assignee: Resin Design International Corp.Inventor: Stuart B. Smith
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Patent number: 5059633Abstract: Flexible polyurethane foams having low compressive strength and relatively good tensile strength are prepared by reactinga) a block polyoxypropylenepolyoxyethylenepolyol mixture which has a hydroxyl number of from 14 to 65, contains from 2 to 9% by weight, based on the weight of the polyoxypropylene units, of ethylene oxide units bonded in the terminal position and is prepared by anionic polymerization of the alkylene oxides with an initiator mixture having an average functionality of from 2.3 to 2.8 and consisting of water and glycerol and/or trimethylolpropane, or a mixture of these block polyoxypropylenepolyoxyethylenepolyol mixtures with bi- and/or trifunctional polyoxypropylenepolyoxyethylenepolyols having a hydroxyl number of from 20 to 70, andb) if required, low molecular weight chain extenders withc) organic and/or modified organic polyisocyanates in the presence ofd) catalysts,e) blowing agents, preferably water, and if required,f) assistants and/or additives.Type: GrantFiled: November 28, 1990Date of Patent: October 22, 1991Assignee: BASF AktiengesellschaftInventors: Heinz-Dieter Lutter, Werner Hinz, Walter Decker, Reinhard Leppkes, Erhard Reich, Reinhard Peters, Volker Haase, Michael Lugmayr
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Patent number: 5057544Abstract: The present invention relates to an integral skin rigid polyurethane foam having improved compressive strength and flexural strength. This foam is prepared by reacting a polyol resin component with an aromatic isocyanate using water as an auxiliary blowing agent.Type: GrantFiled: November 16, 1990Date of Patent: October 15, 1991Assignee: BASF CorporationInventors: David J. Ho, David C. Krueger
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Patent number: 5057573Abstract: The present invention relates to a urethane polymer composition which contains:an .alpha., .omega.-diol oligomeran isocyanate,a chain extender diol, andan emulsifying agent which is the product of reaction between:(a) an .alpha., .omega.-diol oligomer whose structure is identical or close in polarity to that of the above .alpha., .omega.-diol oligomer,(b) a diisocyanate, and optionally(c) a chain extender of the diol or monoalcohol type, such as a monofunctional polyethylene oxide.It also relates to a process for the preparation of articles from this composition and to the molded articles thus obtained.Type: GrantFiled: January 17, 1990Date of Patent: October 15, 1991Assignee: Societe Industrielle d'Applications Nouvelles de Procedes de Moulages Industriels (SAMI)Inventors: Jean Pierre Pascault, Leon Cuve
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Patent number: 5013766Abstract: The present invention is directed to the discovery that relatively long chain polyols, which are typically used to produce flexible foams, can be used to produced closed cell rigid polyurethane foams.Type: GrantFiled: September 15, 1989Date of Patent: May 7, 1991Assignee: Mobay CorporationInventor: Lotar H. Hanusa
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Patent number: 5010187Abstract: Polyether polyols having an equivalent weight of from about 200 to about 5000 are prepared by the process of this invention. The process uses barium- or strontium-containing alkoxylation catalysts to provide products with reduced unsaturation in comparison to similar products produced with potassium hydroxide catalysis. The use of these catalysts also increases the capping efficiency with ethylene oxide to provide products with a higher primary hydroxyl content for the same weight percentage of ethylene oxide cap.Type: GrantFiled: November 18, 1988Date of Patent: April 23, 1991Assignee: Dow Chemical CompanyInventor: Albert J. Heuvelsland
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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: 4994502Abstract: An integral skin polyurethane steering wheel is prepared by reacting (a) a mixture of a graft polymer dispersion in a polyol or a polyol mixture (b) an organic polyisocyanate selected from the group consisting of an isocyanate prepolymer prepared by reacting 4,4'-diphenylmethane diisocyanate with a mixture of dipropylene glycol and a polyoxypropylene glycol having a molecular weight of about 420, a polymeric polymethylene polyphenylene polyisocyanate containing about 55 weight percent diphenylmethane diisocyanate, a 1:1 mixture of 2,4'and 4,4'-diphenylmethane diisocyanate and mixtures thereof, (c) a blowing agent, (d) a chain extender, and (e) a catalyst, surfactant and optionally flame retardants, fillers U.V. adsorbers and other additives.Type: GrantFiled: July 1, 1987Date of Patent: February 19, 1991Assignee: BASF CorporationInventors: Robert A. Markovs, Eric R. Sattler
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Patent number: 4981880Abstract: Low density flexible molded and slabstock foams are prepared by reacting a polyisocyanate with a polyol composition containing a mono-alcohol. The blowing of the foam is essentially with carbon dioxide generated from the reaction of water with isocyanate, and the reaction catalysts used in the preparation of the foam include a polyisocyanate trimerization catalyst.Type: GrantFiled: January 24, 1990Date of Patent: January 1, 1991Assignee: The Dow Chemical CompanyInventors: Christian M. Lehmann, Michael A. P. Gansow
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Patent number: 4977195Abstract: An elastomer which is the reaction product of:(a) at least one organic polyisocyanate;(b) at least one compound containing a plurality of isocyanate-reactive groups and having a molecular weight greater than 600, and(c) at least one chain extender having a molecular weight not exceeding 600,wherein at least one of components (a) and (b) is or includes a compound having a molecular weight greater than 600 and at least two reactive sites, at least one of which sites contains at least two isocyanate or isocyanate-reactive groups which are separated one from another by a chain of from 2 to 30 atoms and from the reactive groups in other reactive sites by a chain of more than 30 atoms.Type: GrantFiled: September 28, 1988Date of Patent: December 11, 1990Assignee: Imperial Chemical Industries PLCInventor: Herbert R. Gillis
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Patent number: 4970243Abstract: This invention relates to a process for the production of elastic, open-cell flexible slabstock polyurethane foams comprising reacting at an isocyanate index less than about 80 one or more polyisocyanates selected from the group tolylene diisocyanates, hexamethylene diisocyanate, and isophorone diisocyanate, with compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight of about 400 to about 10,000, in the presence of water as blowing agent in a quantity of about 5 to about 15 parts by weight for every 100 parts by weight of the isocyanate-reactive compound. The process may optionally include chain-extending and crosslinking agents containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight of about 32 to about 399, and may optionally be carried out in the presence of other blowing agents, catalysts, auxiliaries, and additives.Type: GrantFiled: June 6, 1989Date of Patent: November 13, 1990Assignee: Bayer AktiengesellschaftInventors: Gundolf Jacobs, Peter Haas, Hans-Walter Illger, Hans-Joachim Kogelnik, Klaus-Dieter Wolf
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Patent number: 4957654Abstract: Disclosed is a storage stable blend of a long chain polyol and a short chain diol wherein the diol is present in an amount whereby the diol and polyol form an incompatible blend. The blend is rendered storage stable by the addition of a compatibilizing amount of a phenol.Type: GrantFiled: August 8, 1988Date of Patent: September 18, 1990Inventor: Timothy A. Tufts
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Patent number: 4950694Abstract: A process for making low density and optionally low resilience, soft, flexible polyurethane slabstock foam having a substantially open cell structure without crushing, without requiring auxiliary inert blowing agents, by reacting under a condition which permits the foam to rise freely, a conventional hydroxyl-containing polyether polyol with a polyisocyanate at an isocyanate index of between about 60 and 95 in the presence of a foam processing aid comprising a low equivalent weight crosslinking agent and/or extending agent and, as needed, a cell opening agent.Type: GrantFiled: June 29, 1989Date of Patent: August 21, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventor: Stanley L. Hager
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Patent number: 4950695Abstract: Improved, flexible, open-celled polyurethane foams of reduced firmness, but with densities comparable to those of standard foams, are described. The foams are formed in situ from the reaction of isocyanate, one or more blowing agents including water, a foam stabilizer, polyether polyols or polyester polyols or a mixture of these polyols, and monofunctional materials chemically analogous to the polyols, in the presence of a catalyst. The monofunctional materials can be alcohols, polyesters, or polyethers. Useful monofunctional alcohols have carbon chain lengths of at least 3, and preferably from 8 to 20. Useful monofunctional polyesters have molecular weights from 300 to 2000, and preferably from 300 to 800. Useful monofunctional polyethers, which are derived from the reaction of a monofunctional alcohol with propylene oxide and/or ethylene oxide, have molecular weights from 100 to 3000, and preferably from 200 to 1800.Type: GrantFiled: March 6, 1989Date of Patent: August 21, 1990Assignee: PMC, Inc.Inventor: Herman Stone
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Patent number: 4923904Abstract: A process for producing a polyurethane foam from a foam raw material containing polyols, organic isocyanates, catalysts and blowing agents, which comprises using as the polyols a high-molecular weight polyol having a hydroxyl number lower than 100 and a low-molecular weight polyol having a hydroxyl number higher than 200 which are mixed at a ratio of 4:6 to 6:4 (by weight), and also using as the catalysts a tertiary amine alone. Polyurethane forms having good buckling performance can be obtained by the process and they are expected to be useful as a packaging material, shock-absorbing material, heat-insulating material, and so on.Type: GrantFiled: December 22, 1988Date of Patent: May 8, 1990Assignee: Bridgestone CorporationInventors: Hajime Hasegawa, Taiji Koga, Atsuo Takei, Toru Okuyama
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Patent number: 4916168Abstract: Flexible polyurethane foam based on methylene diphenyl isocyanates and isocyanate-reactive compounds selected from polyols and polyamines, for which the ratio of the density expressed in kg/m.sup.3 to the compression hardness at 40% compression, expressed in kPa, has a value of at least 20.Such foams may be obtained through a process which comprises reacting methylene diphenyl isocyanates with one or more isocyanate-reactive compounds selected from polyols and polyamines with a functionality of 2-4 and an average equivalent weight ranging from 750-5000 and from 0 to 5 parts by weight of water per 100 parts of polyols and/or polyamine, optionally together with additives conventional in the art, and optionally together with blowing agents other than water, whereas the isocyanate index ranges from 10 to 60.Type: GrantFiled: September 21, 1988Date of Patent: April 10, 1990Assignee: Imperial Chemical Industries PLCInventors: Tu Pham, Louis Muller
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Patent number: 4883825Abstract: A process for the manufacture of low density flexible polymethane foam via a catalyzed reaction of a highly reactive, high ethylene oxide, high functionality polyol, a hydrophilic polyhydric compound, water and polyisocyanates.Type: GrantFiled: December 30, 1987Date of Patent: November 28, 1989Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Paul M. Westfall, Frank E. Critchfield, William A. Gill
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Patent number: 4839393Abstract: Polyurethane foams based on reactive polyols and polyisocyanates containing a filler are modified with an organofunctional silane containing a hydrolyzable group and an ethylenically unsaturated linkage. The polyurethane foams have improved physical properties including improved stability, compression set, tear resistance, elongation, and tensile strength.Type: GrantFiled: July 8, 1988Date of Patent: June 13, 1989Assignee: Wm. T. Burnett & Co., Inc.Inventors: Michael S. Buchanan, Gregory B. Davis, Walter V. V. Greenhouse
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Patent number: 4826885Abstract: Disclosed is the compatibilizing of an incompatible blend of a long-chain polyether polyol and a short chain diol by providing that the polyether polyol comprises at least two polyoxypropylene triols, one of which has a molecular weight of between about 2,000 and 8,000, the second of which has a molecular weight of between about 300 and 900. The blend is fluid and substantially devoid of polyoxyethylene polyol content.Type: GrantFiled: May 11, 1988Date of Patent: May 2, 1989Assignee: Ashland Oil, Inc.Inventor: Chung-Chieh Tsai
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Patent number: 4810543Abstract: The coefficient of friction of surfaces of articles, wherein the surface comprises a hydrophilic polyurethane polymer, is reduced by treating the surface with a mixture of concentrated sulfuric acid and a low molecular weight organic polyhydroxy compound, and removing excess treating mixture. Typical low friction articles produced thereby are boat hulls having drag resistant coatings, conduits having low friction linings, and cannula or body implants having slippery surfaces.Type: GrantFiled: October 17, 1986Date of Patent: March 7, 1989Assignee: Tyndale Plains-Hunter Ltd.Inventors: Francis E. Gould, Charles K. Kliment, George E. Seems
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Patent number: 4798851Abstract: The invention relates to a process for the preparation of elastic, noncellular or cellular polyurethane molded articles or polyurethane-polyurea molded articles through reactions of(a) an organic polyisocyanate,(b) a polyester polyol having a hydroxyl number of from about 25 to 100 and an acid number of less than 2, prepared through the polycondensation of organic dicarboxylic acids with at least one polyoxytetramethylene glycol having a molecular weight of from about 162 to 600, or a mixture comprised of the said polyoxytetramethylene glycols with aliphatic diols and/or polyoxyalkylene glycols having a molecular weight of from about 106 to 1000,(c) a chain extending agent in the presence of(d) a catalyst and, optionally,(e) a blowing agent,(f) an auxiliary agent and/or additive.Type: GrantFiled: April 9, 1987Date of Patent: January 17, 1989Assignee: BASF AktiengesellschaftInventors: Frank Werner, Joachim Streu, Herbert Mueller
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Patent number: 4789690Abstract: A polyurethane foam is the reaction product of at least one polyol and at least one polyisocyanate in the presence of at least one blowing agent. The polyol contains a polymer polyol dispersion prepared by reacting an epoxy resin with an epoxy hardener in the presence of a liquid polyol.Type: GrantFiled: March 30, 1987Date of Patent: December 6, 1988Assignee: The Dow Chemical CompanyInventors: Olga Milovanovic-Lerik, Hanno R. van der Wal, Ulrich Tribelhorn
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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: 4749807Abstract: There are described vinyl ether terminated ester oligomers which cure or polymerize particularly rapidly, especially by cationic polymerization which is radiation induced in the presence of an onium salt. The oligomeric units arise most often from the reaction of a dicarboxylic acid with a diol, although esters with triols and higher polyhydric polyols also are useful, especially where an extensively cross-linked product is desired. The carboxyl-terminated oligomeric esters are esterified with vinyl ether terminated alcohols which can be thought of as the adducts of alkynes and polyols, especially diols.Type: GrantFiled: February 17, 1987Date of Patent: June 7, 1988Assignee: Allied-Signal Inc.Inventors: Stephen C. Lapin, Stephen A. Munk
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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: 4727095Abstract: Thermoformable rigid foams are made by reacting an organic polyisocyanate with a polyol component. The polyol component includes at least one organic polyhydroxyl compound having a hydroxyl number of from 28 to 1200, a foaming agent, a catalyst and a compound which masks isocyanate groups. Preferred isocyanate masking compounds are .epsilon.-caprolactam and nonyl phenol. The foam thus obtained may then be molded and crosslinked by heating it to a temperature of from 150.degree. to 190.degree. C. These foams are particularly useful as interior trim for motor vehicles.Type: GrantFiled: March 18, 1987Date of Patent: February 23, 1988Assignee: Bayer AktiengesellschaftInventors: Eberhard Konig, Uwe F. Gronemeier, Karl-Josef Kraft
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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: 4717738Abstract: Polyurethane resins having high rigidity and improved physical properties, such as mechanical strengths and heat resistance are obtained by reacting a polyisocyanate with a polyol component comprising a pendant hydroxyl-containing polymer polyol, of high polymer content, derived from a polyol and a mixture comprising a hydroxyl-containing monomer and an unsaturated nitrile, or a combination of said polymer polyol with an epoxy-containing polymer polyol.Type: GrantFiled: December 18, 1985Date of Patent: January 5, 1988Assignee: Sanyo Chemical Industries, Ltd.Inventors: Masao Fukuda, Koji Kumata
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Patent number: 4703069Abstract: This invention relates to polyether polyols having an average hydroxyl value in the range of 100 to 250 mgKOH/g, which are alkoxylated derivatives of a polyhydric alcohol being a mixture of compounds according to formula (I) or/and (II) ##STR1## wherein R.sup.1 is H, CH.sub.3 or OCH.sub.3,R.sup.2 is H, CH.sub.2 OH or CH.sub.2 C(CH.sub.2 OH).sub.3, andR.sup.3 and R.sup.4 areH, CH.sub.2 OH or CH.sub.2 OCH.sub.3.Type: GrantFiled: June 27, 1986Date of Patent: October 27, 1987Assignee: Imperial Chemical Industries plcInventors: James P. Brown, Ronald N. May, David Randall
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Patent number: 4692477Abstract: Rigid polyisocyanurate foams are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol, the polyol comprising a sufficient proportion of at least one polyoxyalkylene polyol having (i) terminal oxypropylene oxide blocks, (ii) a molecular weight of from about 300 to 3000, and (iii) an average hydroxyl functionality of from about 2 to 5 to form a foamed polyisocyanurate whose gel time is greater than about 70 seconds and friability is less than about 20 percent, as measured by the ASTM C-421 friability test. Laminates of such foams exhibit a high degree of fire resistance, low foam friability and good facer adhesion.Type: GrantFiled: May 15, 1986Date of Patent: September 8, 1987Assignee: The Celotex CorporationInventor: Charles E. Jacobina
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Patent number: 4689357Abstract: A vibration isolator composed of a low foam urethane elastomer having urethane bonds and a bulk density of 0.4-0.75 g/cm.sup.3 which is prepared from the starting foamable liquid of urethane elastomer composed substantially of(a) a polyether polyol having an average number of functional groups of 2.5-4.5 and a number average molecular weight of 2000-3500,(b) a vinyl monomer-grafted polyol having an average number of functional groups of 2.5-4.0 and the graft ratio is 4-20% by weight,(c) a liquid polybutadiene polyol having hydroxyl terminal group(s), an average number of functional groups of 2.0-3.0 and a number average molecular weight of 2000-7000,(d) an organic polyisocyanate,(e) a chain extender(f) a blowing agent, and(g) a urethanation catalyst,in such ratios that the NCO index is within the range of 90-110, and the concentration of the chain extender, based on the total amount of the five components of (a), (b), (c), (d) and (e), is 0.3.times.10.sup.-3 to 1.5.times.10.sup.-3 mol/g.Type: GrantFiled: June 6, 1985Date of Patent: August 25, 1987Assignee: Nisshin Spinning Co., Ltd.Inventors: Tatsuya Hongu, Toshio Suzuki, Yoshihiko Ogawa, Takeshi Itoh
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Patent number: 4687788Abstract: Urethane elastomers are prepared which have a percent linear dimensional change after being immersed in water of not greater than 0.80%.Type: GrantFiled: November 25, 1983Date of Patent: August 18, 1987Assignee: The Dow Chemical CompanyInventors: Douglas K. Hillshafer, Robert B. Turner
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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: 4673696Abstract: Disclosed is a storage stable blend of a long chain polyol and a short chain diol wherein the diol is present in an amount whereby the diol and polyol form an incompatible blend. The blend is rendered storage stable by the addition of a compatibilizing amount of an ethylenically unsaturated esterol. Alternatively, the compatibilizing agent comprises an adduct of the ethylenically unsaturated esterol and a polyol, e.g. glycol. The storage stable blends find utility in making rigid, tough RIM parts.Type: GrantFiled: July 3, 1986Date of Patent: June 16, 1987Assignee: Ashland Oil, Inc.Inventor: Chung-Chieh Tsai
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Patent number: 4661529Abstract: Isocyanate-derived foams are prepared from an isocyanate, catalyst, blowing agent, foam stabilizing surfactant and at least two active hydrogen-containing compounds wherein one of the active hydrogen-containing compounds is an alkylene oxide polymer having an equivalent of at least 300 and being composed of at least about 10 weight percent, based on a total weight of the polymerized alkylene oxide in the polymer, of a polymerized ethylene oxide.Type: GrantFiled: December 16, 1985Date of Patent: April 28, 1987Assignee: The Dow Chemical CompanyInventors: E. Kuhn, J. Den Boer, J. Thoen
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Patent number: RE33748Abstract: A process for the preparation of homogeneous and cellular polyurethane plastics by the reaction of(a) organic polyisocyanates;(b) compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having molecular weights of from 400 to 10,000;(c) chain extenders, and, optionally, additional(d) short-chained compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having a molar mass of from 32 to 400, as well as, optionally,(e) catalysts, blowing agents and other known additives,is described, which is characterized in that 1,4-3,6-dianhydro-hexites, preferably 1,4-3,6-dianhydro-D-sorbitol and/or 1,4-3,6-dianhydro-D-mannitol, optionally mixed with lower molecular weight compounds, preferably with polyols having a molecular weight of from 62 to 400, particularly preferably butane diol-1,4 are used as the chain extenders. The new chain extenders produce high quality elastomers and foams.Type: GrantFiled: May 10, 1985Date of Patent: November 19, 1991Assignee: Bayer AktiengesellschaftInventors: Holger Meyborg, Kuno Wagner, James M. Barnes, Herbert Salzburg