Nitrogen Reactant Contains A N-(c-c-o)-group Patents (Class 521/167)
-
Patent number: 5049591Abstract: A shape memory polymer foam which takes on a deformed shape and an as-molded shaped, said deformed shape being produced when the polymer foam is compressed at a temperature higher than the glass transition point (Tg) of the polymer and then kept compressed at a temperature lower than the Tg until compression sets, said as-molded shape being produced when the compressed polymer foam is heated again to a temperature higher than the Tg until it recovers its original shape.Type: GrantFiled: September 28, 1989Date of Patent: September 17, 1991Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Shunichi Hayashi, Hiroshi Fujimura
-
Patent number: 5043360Abstract: Substantially water blown flexible polyurethane foams, based on methylene diphenyl isocyanates, having a density ranging from 15-45 kg/m.sup.3. Such foams may be obtained through a process substantially avoiding halocarbon blowing agents, which comprises reacting methylene diphenyl isocyanates with water and 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, while the isocyanate index ranges from 10 to 60, and weight ratio of the isocyanate-reactive compound(s) to water is less than 20.Type: GrantFiled: December 26, 1989Date of Patent: August 27, 1991Assignee: Imperial Chemical Industries PLCInventors: Tu Pham, Louis Muller
-
Patent number: 5041467Abstract: This invention relates to a method of producing particulate polymers. This production method is characterized in that a mixture of an isocyanate compound containing two or more isocyanato groups per molecule and a surfactant containing two or more hydroxyl groups per molecule is emulsified and allowed to cure in a dispersing medium which does not dissolve the isocyanate compound without use of a protective colloid. According to the production method of the invention, there occurs no aggregation of polymer particles during and after the curing reaction.Type: GrantFiled: September 4, 1990Date of Patent: August 20, 1991Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Hironori Kataoka, Kazuhito Jinno, Tokiko Yamashita
-
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
-
Patent number: 5028637Abstract: The present invention is directed to a reactive mixture for use in preparing a flexible polyurethane foam and to the foams produced therefrom. The reactive mixture broadly comprises an isocyanate reactive composition comprising:A) from more than 0 up to 3 parts by weight per 100 parts by weight of components B) and C) of an amine of the formula:H.sub.2 N--R--NH.sub.2where R is a C.sub.3 to C.sub.10 straight or branched alkylene group or a C.sub.4 to C.sub.15 alicyclic group,B) from more than 0 up to 40% by weight of a relatively high molecular weight compound containing at least two aromatically bound primary amine groups, andC) from 60 to less than 100% by weight of one or more polyether polyhydroxyl compounds having hydroxyl functionalities of from 2 to 3 and molecular weights of from about 1000 to about 10,000, the percents by weight of component B) and component C) totalling 100%.Type: GrantFiled: October 6, 1989Date of Patent: July 2, 1991Assignee: Mobay CorporationInventor: Charles M. Milliren
-
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
-
Patent number: 5011647Abstract: Active hydrogen-containing compositions having internal mold release components are used in a process in preparing molded polymeric products. In the process, the active hydrogen-containing composition contains (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.Type: GrantFiled: June 21, 1989Date of Patent: April 30, 1991Assignee: The Dow Chemical CompanyInventors: Louis W. Meyer, Robert Carswell, J. Alan Vanderhider
-
Patent number: 5010117Abstract: Flexible polyurethane foams are prepared from poly(propylene oxide) polymers having low levels of monofunctional impurities. The resulting foam has improved processing characteristics and compression set.Type: GrantFiled: June 16, 1989Date of Patent: April 23, 1991Assignee: Dow Chemical CompanyInventors: Ronald M. Herrington, Robert B. Turner, Roney J. Matijega
-
Patent number: 5009950Abstract: The present invention is directed to composite structures by thermoplastically shaping an assembly of at least two flat thermoplastically formable plastic materials placed in layers one above the other and optionally at least one upper, lower and/or intermediate layer containing a reinforcing or filler material under such conditions of temperature and pressure that shaping is accompanied by intimate union of the individual layers of the assembly, characterized in that at least one of the flat plastic materials is based on a polyisocyanate polyaddition product having a density of at least 0.8 g/cm.sup.3 which has been prepared by the reaction of(a) aromatic polyisocyanates,(b) compounds having a molecular weight of 1800 to about 12000 and containing a statistical average of at least 2.Type: GrantFiled: March 14, 1989Date of Patent: April 23, 1991Assignee: Bayer AktiengesellschaftInventors: Joachim Wagner, Karl Peltzer, Werner Rasshofer
-
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
-
Patent number: 5008299Abstract: Disclosed are rigid cellular polyurethanes prepared by bringing together under foam forming conditions an aromatic polyisocyanate and a polyhydric combination comprising a major proportion of a crude polyester polyol and minor proportion of a cross-linking polyol. This selection of particular ingredients gives rise to foams having extremely low initial insulation K factor values.Type: GrantFiled: February 20, 1990Date of Patent: April 16, 1991Assignee: The Dow Chemical CompanyInventors: Benjamin W. Tucker, Debkumar Bhattacharjee
-
Patent number: 5008033Abstract: Active hydrogen-containing compositions having internal mold release components for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.Type: GrantFiled: June 12, 1989Date of Patent: April 16, 1991Assignee: The Dow Chemical CompanyInventors: Louis W. Meyer, J. Alan Vanderhider, Robert Carswell
-
Patent number: 5001165Abstract: Polyol blend compositions are provided containing a polyester polyol, especially an aromatic polyester polyol, a compatibilizing block copolymer of ethylene oxide and at least one other alkylene oxide having three or more carbon atoms in the molecule, the block copolymer being terminated by ethylene oxide blocks, and optionally other polyols. The blends are miscible with halohydrocarbon blowing agents such as trichlorofluoromethane and suitable for reaction with polyisocyanates to give polyisocyanurate and polyurethane foams.Type: GrantFiled: May 17, 1989Date of Patent: March 19, 1991Assignee: Sloss Industries CorporationInventors: John S. Canaday, Ernest K. Moss
-
Patent number: 4992484Abstract: This invention relates to crosslinker sytems for polyurethanes and a process for producing such polyurethane products. The polyurethanes are prepared by reacting an organic polyisocyanate with an organic compound having active Zerewitinoff hydrogen atoms, e.g., a polyol with an alkoxylated diethyltoluenediamine crosslinker. Improved properties can be achieved, such as, higher load-bearing at equivalent density; higher tear; and higher elongation.Type: GrantFiled: November 20, 1987Date of Patent: February 12, 1991Assignee: Air Products and Chemicals, Inc.Inventor: Glenn A. Taylor
-
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
-
Patent number: 4957944Abstract: Certain dimethylamino alkyleneoxy isopropanols obtained by propoxylation of dimethylamino alkanols and ethers is used as a catalyst for preparing polyurethane foam.Type: GrantFiled: June 16, 1989Date of Patent: September 18, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Reinhart Schiffauer, Walter Buchmuller
-
Patent number: 4954537Abstract: The present invention is directed to a process for the production of optionally cellular, polyurea elastomer moldings by reacting a reaction mixture containing(I) a polyisocyanate,(II) a polyether having at least two isocyanate-reactive groups and a molecular weight of 1800 to 12,000 in which at least 50% of the isocyanate-reactive groups are primary and/or secondary amino groups,(III) about 5 to 50% by weight, based on the weight of component (II) of a chain extender comprising a sterically hindered aromatic diamine and(IV) about 1 to 20% by weight, based on the weight of components (II) and (III) of an active hydrogen-containing fatty acid ester having a molecular weight of about 500 to 5000 and prepared by reacting an alcohol with an aliphatic, saturated or unsaturated fatty acid, said ester being characterized in that at least one aliphatic acid which contains more than eight carbon atoms is built into the molelcule, said ester further characterized as having an acid number of 0 to 100 and a hydroxyl numbType: GrantFiled: June 8, 1989Date of Patent: September 4, 1990Assignee: Mobay CorporationInventor: Frank Sanns, Jr.
-
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
-
Patent number: 4946872Abstract: A liquid prepolymer composition is disclosed which contains free isocyanate groups which is the reaction product of a stoichiometric excess of a polyisocyanate and an active hydrogen-containing compound which contains an internal rigid polyaromatic grouping. Polyurethane and/or polyurea polymers made from these prepolymer compositions are also disclosed.Type: GrantFiled: March 30, 1989Date of Patent: August 7, 1990Assignee: The Dow Chemical CompanyInventors: Oomman P. Thomas, Earl E. Burt, III, Richard D. Peffley
-
Patent number: 4945120Abstract: The present invention is directed to the production of free-rise polyurethane foams using sterically hindered diamines of the formula (e) ##STR1## and/or ##STR2## in which R.sup.1 and R.sup.2 may be the same or different and represent C.sub.1 -C.sub.4 -alkyl andR.sup.3 and R.sup.4 may again be the same or different and represent H or CH.sub.3, is added to said reaction mixture.Type: GrantFiled: May 23, 1989Date of Patent: July 31, 1990Inventors: Richard Kopp, Gunter Oertel, Eckehard Weigand, Rolf Wiedermann
-
Patent number: 4943649Abstract: Alkoxylated polyols are prepared by dispersing a nitrogen-containing material, such as urea, into a dispersing media comprised of a polyether or polyester polyol and a chemical moiety capable of being alkoxylated, such as a carbohydrate, i.e. whey permeate or sucrose, lactose, etc., and reacting the resultant dispersion with a C.sub.2 -C.sub.6 epoxide to form an alkoxylated polyol having a hydroxyl number below about 600. In certain embodiments, up to about 25% by weight of a urea material can be incorporated within the alkoxylated polyol for improved flame retardancy in the polyurethane/polyisocyanate/polyisocyanurate foams produced therefrom.Type: GrantFiled: November 1, 1988Date of Patent: July 24, 1990Assignee: Polylactane, Inc.Inventors: George Magnus, Brian Kelley
-
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
-
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
-
Patent number: 4923903Abstract: Air is mechanically entrained in a dyed or colored, aqueous solution comprising surfactant, poly(oxyalkylene) polyisocyanate prepolymer and the reaction product of said prepolymer and one or more isocyanate-reactive dyes, the poly(oxyalkylene) portion of said prepolymer containing sufficient oxyethylene units to render the prepolymer and the reaction product water-soluble and hydrophilic, to form a dyed or colored, fluid, aqueous air foam which is sprayed or otherwise applied to exposed surface of a substrate, e.g. a sanitary landfill, the applied foam gelling or increasing in viscosity, due to the polymerization, e.g.Type: GrantFiled: January 24, 1989Date of Patent: May 8, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Roger R. Alm, Richard M. Stern
-
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
-
Patent number: 4910231Abstract: Substantially water blown flexible polyurethane foams, based on methylene diphenyl isocyanates, having a density ranging from 15-45 kg/m.sup.3.Such foams may be obtained through a process substantially avoiding halocarbon blowing agents, which comprises reacting methylene diphenyl isocyanates with water and 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, while the isocyanate index ranges from 10 to 60, and weight ratio of the isocyanate-reactive compound(s) to water is less than 20.Type: GrantFiled: September 21, 1988Date of Patent: March 20, 1990Assignee: Imperial Chemical Industries PLCInventors: Tu Pham, Louis Muller
-
Patent number: 4904705Abstract: Polyurea foams are prepared by the reaction of N-(polyoxyalkyl)-N-(alkyl)amines with organic isocyanates in the presence of a suitable catalyst.Type: GrantFiled: March 31, 1988Date of Patent: February 27, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Richard M. Gerkin, Michael W. Jorgenson
-
Patent number: 4904707Abstract: The present invention is directed to a novel polyol composition and the use thereof in the preparation of a rigid polyurethane foam. More particularly the polyol composition is a blend of specific amounts of two polyols, one based on ortho-toluene diamine and the other based on a non-ortho-toluene diamine.Type: GrantFiled: December 21, 1988Date of Patent: February 27, 1990Assignee: Mobay CorporationInventor: Soheila R. Lunney
-
Patent number: 4883826Abstract: Mannich polyols of low viscosity and reduced reactivity are prepared by condensing a phenolic compound with formaldehyde and a mixture of diethanolamine and at least one other alkanol amine. The condensation product is the alkoxylated to form a polyol which is particularly useful in preparing rigid polyurethane foam.Type: GrantFiled: July 27, 1988Date of Patent: November 28, 1989Assignee: The Dow Chemical CompanyInventors: J. E. Marugg, Michael A. P. Gansow, J. A. Thoen
-
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
-
Patent number: 4876292Abstract: The present invention is directed to a reactive mixture for use in preparing a flexible polyurethane foam and to the foams produced therefrom. The reactive mixture broadly comprises(A) from more than 0 up to 3 parts by weight per 100 parts by weight of components (B) and (C) of an amine of the formula:H.sub.2 N--R--NH.sub.2where R is a C.sub.4 to C.sub.10 straight or branched alkylene group, or a C.sub.4 to C.sub.15 alicyclic group,(B) from 0 to 30% by weight of a polyoxyalkylene polyamine having a molecular weight of from about 400 to about 5000 and containing from 2 to 3 primary amino groups, and(C) from 700 to 100% by weight of one or more polyether polyhydroxyl compounds having hydroxyl functionalities from about 2 to 3 and molecular weights of from about 1000 to about 10,000, the percents of components (B) and (C) totalling 100%.Type: GrantFiled: October 6, 1988Date of Patent: October 24, 1989Assignee: Mobay CorporationInventor: Charles M. Milliren
-
Patent number: 4876019Abstract: Internal mold release compositions for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.Type: GrantFiled: January 12, 1984Date of Patent: October 24, 1989Assignee: The Dow Chemical CompanyInventors: Louis W. Meyer, James A. Vanderhider, Robert Carswell
-
Patent number: 4874797Abstract: The present invention is directed to novel polyhydroxyalkyl oligoureas prepared by condensing urea derivatives with polyamides. The present invention is further directed to polyether polyols prepared by alkoxylating these polyhydroxyalkyl oligoureas. Finally, the present invention is directed to the use of both the polyhydroxyalkyl oligoureas and the polyethers prepared therefrom for use in the production of polyurethanes, particularly rigid foams.Type: GrantFiled: October 1, 1986Date of Patent: October 17, 1989Assignee: Bayer AktiengesellschaftInventors: Peter Haas, Claus-Dieter Sommerfeld, Hans-Ulrich Weber
-
Patent number: 4868223Abstract: Disclosed are active hydrogen compositions comprising: (A) a polyether polyol having a functionality of at least about three; (B) an amine-based polyol having an equivalent weight less than about 250 and derived from the addition of at least two moles of butylene oxide to a nitrogen containing compound having at least two active hydrogen atoms; optionally (C) an active hydrogen containing extender of equivalent weight up to about 200; and optionally (D) a low equivalent weight cross-linking polyol other than (B) above.Also dislcosed are the molded polyurethanes produced from the above compositions and, particularly high strength mat molded reaction injection molded parts.Type: GrantFiled: November 9, 1988Date of Patent: September 19, 1989Assignee: The Dow Chemical CompanyInventors: Donald L. Nelson, Douglas P. Waszeciak, Douglas K. Hillshafer
-
Patent number: 4845133Abstract: Flexible polyurethane foams are prepared by reacting a polyisocyanate with certain amine-terminated compounds. The amine terminated compounds are characterized in having at least 30 percent of their active hydrogen-containing groups in the form of primary aromatic, Lewis acid-blocked primary aliphatic and/or secondary aromatic or aliphatic amine groups. The resulting foams exhibit excellent physical properties, even in the absence of a cross-linker compound.Type: GrantFiled: March 21, 1988Date of Patent: July 4, 1989Assignee: The Dow Chemical CompanyInventors: Ralph D. Priester, Jr., Richard D. Peffley, Ronald M. Herrington
-
Patent number: 4820810Abstract: Catalytic quantities of urea are used in the alkoxylation of aqueous sucrose to prepare low color polyols useful in rigid polyurethane foams.Type: GrantFiled: October 30, 1986Date of Patent: April 11, 1989Assignee: ARCO Chemical Technology, Inc.Inventors: Howard P. Klein, Michael E. Brennan
-
Patent number: 4808636Abstract: A process for producing a shaped article of a non-cellular or microcellular polyurethane elastomer by reaction injection molding by using a high molecular weight active hydrogen compound component (A), a chain extender component (B) and a polyisocyanate compound component (C) as starting materials,wherein(I) the high molecular weight active hydrogen compound component (A) comprises(1) at least one polyoxyalkylene polyol (a-1) having an average molecular weight per hydroxyl group of from 800 to 4000 and an average number of hydroxyl groups per molecule of from 2 to 8 and containing at least 5% by weight of oxyethylene groups at the terminal portions of its molecules,(2) a high molecular weight amine (a-2) having from 2 to 8 active hydrogen-containing groups, and optionally(3) a high molecular weight polyol (a-3) other than the polyalkylene polyol (a-1), and(II) the chain extender component (B) comprises(1) a low molecular weight polyol (b-1) having from 2 to 4 hydroxyl groups and a molecular weight of at mostType: GrantFiled: April 22, 1988Date of Patent: February 28, 1989Assignee: Asahi Glass Company Ltd.Inventors: Joichi Saito, Hiroshi Wada, Shigehito Shibata, Takashi Watabe, Kiyoshi Tanabe, Nobuaki Kunii
-
Patent number: 4806572Abstract: A makeup remover pad is provided which comprises a resilient, open-celled hydrophilic foam matrix, wherein said matrix integrally incorporates an aqueous phase incorporating about 25-75% water, about 15-70% of a water-insoluble emollient oil, and an amount of surfactant effective to stabilize the aqueous phase so that it is released from the foam matrix as a homogeneous emulsion when the pad is applied to skin.Type: GrantFiled: May 4, 1987Date of Patent: February 21, 1989Assignee: Creative Products Resource Asociates, Ltd.Inventor: George W. Kellett
-
Patent number: 4797429Abstract: New Mannich bases of the formula ##STR1## wherein each of R.sup.1 and R.sup.2, independently, represents a hydroxyalkyl radical, and to oxyalkylation derivatives of the formula ##STR2## wherein each of a, b and c represents zero or a positive integer, their sum being in the range from 3 to 8, and wherein each A radical represents independently a propylene or ethylene radical. The compounds according to the invention are useful for the manufacture of rigid polyurethane foams.Type: GrantFiled: March 11, 1987Date of Patent: January 10, 1989Assignee: Imperial Chemical Industries PLCInventor: David Thorpe
-
Patent number: 4791230Abstract: A series of hydroxy-terminated amides has been discovered. They are of the formulae:R--[NHCO(CH.sub.2).sub.z OH].sub.2andR--[NHCO(CH.sub.2 OCH.sub.2 OCH.sub.2 CH.sub.2 OH)].sub.2wherein:R is a polyoxyethylene radical of 1 to 9 mers which is optionally capped at both ends with 1 or 2 propylene oxide mers, and z is 3 or 5.The amides are water soluble and cold acetone insoluble. They are useful in flexible polyurethane foams.Type: GrantFiled: March 30, 1988Date of Patent: December 13, 1988Assignee: Texaco Chemical CompanyInventors: Jiang-Jen Lin, George P. Speranza
-
Patent number: 4785026Abstract: Polymer polyols with high polymer or solids content made by the reaction of alkanolamines with polyisocyanates in a dispersing media of polymer polyols created from vinyl monomers in a conventional manner. The equivalents of alkanolamine to equivalents of polyisocyanate ranges from about 1/1 to 5/1 to give novel polymer polyols with solid contents from about 25% to up to 50%. Polyurethane foams made employing the novel polymer polyols of the present invention have higher load bearing properties, and provide a good balance between the load bearing properties and the open cell content of the foam to provide a stable foam, as compared with those employing only conventional polymer polyols.Type: GrantFiled: November 24, 1987Date of Patent: November 15, 1988Assignee: ARCO Chemical CompanyInventors: Ernest L. Yeakey, Michael Cuscurida
-
Patent number: 4780485Abstract: A highly flame retardant and substantially non-combustible polyisocyanurate foam having low friability and no bursting characteristics and method for preparing the same. The method includes the step of reacting an isocyanate having an average isocyanate equivalent weight between about 135 and 145 with a polyether polyol having a hydroxyl number between about 300 and about 600 and a hydroxyl functionality of at least 3. The compounds are combined in amounts to provide NCO/OH equivalent ratio between about 10 and about 50 and are reacted in the presence of a chlorofluorocarbon blowing agent and a catalyst having the general formula: ##STR1## wherein R is a hydrocarbon having between about 1 and about 2 carbon atoms, R' is an alcohol radical having between about 2 and about 3 carbon atoms, and R" is selected from the group consisting of hydrogen and an alkane group having between 1 and 8 carbon atoms.Type: GrantFiled: July 2, 1987Date of Patent: October 25, 1988Assignee: Harry A. FischerInventor: Kaneyoshi Ashida
-
Patent number: 4774264Abstract: Elastic molded articles having a closed surface layer are made from polyurea elastomers by the reaction injection molding technique. These polyurea elastomers are prepared from a polyisocyanate in which all of the isocyanate groups are aromatically bound, a polyether and a diamine. The polyether has at least two isocyanate-reactive groups and a molecular weight from 1800 to 12,000. At least 50% of the isocyanate-reactive groups in the polyether are primary and/or secondary amino groups. The diamine has a molecular weight from 108 to 400 and primary and/or secondary aromatically bound amino groups. Known auxiliary agents and additives may also be employed.Type: GrantFiled: April 18, 1986Date of Patent: September 27, 1988Assignee: Bayer AktiengesellschaftInventors: Christian Weber, Hans Wirtz, Klaus Seel
-
Patent number: 4774263Abstract: Elastic molded articles having a closed surface layer are made from polyurea elastomers by the reaction injection molding technique. These polyurea elastomers are prepared from a polyisocyanate in which all of the isocyanate groups are aromatically bound, a polyether and a diamine. The polyether has at least two isocyanate-reactive groups and a molecular weight from 1800 to 12,000. At least 50% of the isocyanate-reactive groups in the polyether are pjrimary and/or secondary amino groups. The diamine has a molecular weight from 108 to 400 and primary and/or secondary aromatically bound amino groups. Known auxiliary agents and additives may also be employed.Type: GrantFiled: November 22, 1982Date of Patent: September 27, 1988Assignee: Bayer AktiengesellschaftInventors: Christian Weber, Hans Wirtz, Klaus Seel
-
Patent number: 4764543Abstract: Microcellular foamed or reaction injection molded polyurethane/polyurea elastomers are prepared by reacting an aliphatically bound polyisocyanate, a primary or secondary amine terminated polymer, and an aliphatic diamine chain extender represented by the formulas: ##STR1## wherein A is represented by the group ##STR2## each R, R.sub.1 and R.sub.2 are independently hydrogen or an alkyl group having from 1 to about 4 carbon atoms, x has a value from zero to about 4; y has a value of 1 or 2; z has a value of zero or 1; and when y is 2, z is zero and the sum of y and z is 2 and ##STR3## wherein R is H or alkyl of 1 to 4 carbon atoms and A and A' are NH.sub.2 or H with the provisos that in each ring either A or A' is NH.sub.2, not both and when A or A' is NH.sub.2 then the R attached to that carbon atom is H.Type: GrantFiled: August 3, 1987Date of Patent: August 16, 1988Assignee: The Dow Chemical CompanyInventor: Michael R. Savina
-
Patent number: 4760100Abstract: The preparation of isocyanurate foams from a recycled polyethylene terephthalate polyol modified with alkoxylated amines and alkoxylated amides is disclosed. These modified foams exhibit improved fluorocarbon solubility, and do not cause the resultant polyols to be monofunctional, but rather difunctional. The foams may be used for building, roofing and sheathing applications.Type: GrantFiled: October 26, 1987Date of Patent: July 26, 1988Assignee: Arco Chemical CompanyInventor: Kenneth G. McDaniel
-
Patent number: 4757096Abstract: A process for the manufacture of a polyurethane froth foam is provided. The process, which comprises contacting a polyurethane forming formulation with an inert gas under conditions which produce a froth, uses a formulation which contains either (1) an aromatic amine having the formula ##STR1## wherein the R groups are independently selected from hydrogen or alkyl groups and the R.sup.1 and R.sup.2 groups are independently selected from hydrogen or hydroxyalkyl groups or (2) an alkoxylated bisphenol A. Optionally a second additive which is a linear glycol can also be used. The polyurethane froth foams produced are thermoformable while exhibiting good shape retention at ambient temperature.Type: GrantFiled: November 12, 1987Date of Patent: July 12, 1988Assignee: BP Chemicals LimitedInventors: Paul R. Berthevas, Alain F. Fanget
-
Patent number: 4757097Abstract: Oligoesters having hydroxyl groups and an OH number of from 200 to 600 mg KOH/g are made by reacting a cyclic dicarboxylic acid anhydride in which no halogen is present with a polyfunctional alcohol or dialkanolamine in a molar ratio of from 1:0.5 to 1:1.5 at a temperature of from 50.degree. to 150.degree. C. to form the corresponding dicarboxylic acid semiester and/or semiamide. This semiester and/or semiamide is then alkoxylated with ethylene oxide and/or propylene oxide in the presence of a catalyst at 80.degree. to 150.degree. C. The equivalent ratio of acid groups to alkylene oxide groups is from 1:0.8 to 1:1.7. The catalysts are reaction products of alkoxides with at least 3 C-atoms with ammonia, piperidine, piperazine and/or C.sub.2 -C.sub.6 aliphatic, polyamines, preferably diamines in which all of the NH-functional groups have been alkoxylated. The resultant oligoester may then be reacted with a polyisocyanate optionally in the presence of known additives, such as blowing agents and catalysts.Type: GrantFiled: June 23, 1987Date of Patent: July 12, 1988Assignee: Bayer AktiengesellschaftInventors: Manfred Dietrich, Manfred Kapps, Klaus Konig, Roland Nast
-
Patent number: 4745136Abstract: A solution or colloidal dispersion of a polymer of an ethylenically unsaturated steroid derivative in an active hydrogen-containing compound is claimed. The polymer provides improved physical properties to a polyurethane made by reacting the solution or dispersion with an polyisocyanate.Type: GrantFiled: July 14, 1987Date of Patent: May 17, 1988Assignee: The Dow Chemical CompanyInventors: Oomman P. Thomas, Robert B. Turner
-
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