With Non -c-x-c- Containing Reactant Patents (Class 521/176)
-
Patent number: 6706844Abstract: A method for the production of polyurethane products using very low unsaturation polyether polyols prepared in the presence of aluminum phosphonate catalysts is disclosed. Reaction products of the process include various polyurethane products including foams, coatings, adhesives, sealants and elastomers. The aluminum phosphonate catalyst preferably has a general structure of RPO-(OAlR′R″)2, wherein O represents oxygen, P represents pentavalent phosphorous, Al represents aluminum, R comprises a hydrogen, an alkyl group, or an aryl group, and R′ and R″ independently comprise a halide, an alkyl group, an alkoxy group, an aryl group, or an aryloxy group.Type: GrantFiled: December 21, 2001Date of Patent: March 16, 2004Assignee: BASF CorporationInventor: Edward M. Dexheimer
-
Composites comprising a hydrophilic polyester-polyurethane foamed material for vehicle interior trim
Patent number: 6673849Abstract: Composites comprising a polyurethane core and an outer facing layer are described in the present invention. Suitable polyurethane cores are hydrophilic polyester-polyurethane foamed materials which comprise the reaction product of: (a) at least one polyisocyanate, with (b) at least one polyester polyol containing at least two hydroxyl groups and having an average molecular weight within the range from more than 700 to 10,000, and (c) at least one ethoxylated polyether polyol, containing at least two hydroxyl groups, having a molecular weight of at more than 700, a functionality of from 2 to 6, and having a degree of ethoxylation greater than 30% by weight, and (d) optionally, at least one compound containing at least two active hydrogen atoms and having an average molecular weight within the range from 32 to 700, and (e) catalysts, water and/or foaming agents, and (f) optionally, adjuvant substances and additives.Type: GrantFiled: September 14, 2001Date of Patent: January 6, 2004Assignee: Bayer AktiengesellschaftInventors: Klaus-Peter Herzog, Günther Baatz -
Patent number: 6617368Abstract: This invention relates to a process for the preparation of an isotropic rigid foam comprising the step of reacting: (A) an organic polyisocyanate component selected from the group consisting of: (1) a polymethylene poly(phenylisocyanate) and (2) an NCO-terminated prepolymer, and comprising the reaction product of: (a) a polyester comprising the reaction product of (i) pure ortho-phthalic acid or phthalic anhydride and (ii) a glycol and (b) a polymethylene poly(phenylisocyanate); with (B) an isocyanate-reactive component comprising: (1) a liquid OH-terminated prepolymer having a viscosity of more than about 100,000 mPa·s at 25° C.Type: GrantFiled: November 13, 2001Date of Patent: September 9, 2003Assignee: Bayer CorporationInventors: David D. Steppan, Alan D. Bushmire, Edward E. Ball
-
Publication number: 20030134921Abstract: A method for the production of polyurethane products using very low unsaturation polyether polyols prepared in the presence of aluminum phosphonate catalysts is disclosed. Reaction products of the process include various polyurethane products including foams, coatings, adhesives, sealants and elastomers. The aluminum phosphonate catalyst preferably has a general structure of RPO-(OAlR′R″)2, wherein O represents oxygen, P represents pentavalent phosphorous, Al represents aluminum, R comprises a hydrogen, an alkyl group, or an aryl group, and R′ and R″ independently comprise a halide, an alkyl group, an alkoxy group, an aryl group, or an aryloxy group.Type: ApplicationFiled: December 21, 2001Publication date: July 17, 2003Inventor: Edward M. Dexheimer
-
Patent number: 6590057Abstract: The invention provides polyurethane elastomers (PU elastomers), a process for their production using special catalyst mixtures and their use in particular for the manufacture of shoe soles.Type: GrantFiled: August 27, 2002Date of Patent: July 8, 2003Assignee: Bayer AktiengesellschaftInventors: Klaus Brecht, Wolfgang Grimm, Stephan Schleiermacher, Marc Schütze
-
Patent number: 6572791Abstract: There is disclosed an elastic member constituted of polyurethane foam obtained by agitationally mixing with water, a urethane prepolymer synthesized from a polyol and a polyisocyanate, characterized by simultaneously employing as polyols, a (A) polymer polyol synthesized from a polyether polyol as a basis, comprising at least 70% by weight of oxypropylene moiety; and a (B) hydrophilic polyether polyol comprising at least 50% by weight of oxyethylene moiety, or simultaneously employing as polyols, the component (A), the component (B) and a (C) polyether polyol comprising at least 70% by weight of oxypropylene moiety. The above elastic member is simultaneously imparted with excellent characteristics such as low hardness, fine cells, low residual compressive strain, high strength and the like. The polyurethane foam which constitutes the elastic member can be produced by free foaming.Type: GrantFiled: December 7, 2000Date of Patent: June 3, 2003Assignee: Bridgestone CorporationInventors: Junji Sakata, Hirotaka Yamazaki, Tadashi Nakajima, Takahiro Kawagoe
-
Patent number: 6569913Abstract: Novel isocyanate-terminated prepolymers and a process for making flexible polyurethane foams thereof. The prepolymers are made from polyether polyols having a high equivalent weight.Type: GrantFiled: April 28, 2000Date of Patent: May 27, 2003Assignee: Imperial Chemical Industries PLCInventors: Eric Huygens, Pierre Gilbert Henri Jean Chaffanjon, Shpresa Kotaji, Peter Frans Eugeen Maria Stroobants
-
Patent number: 6569352Abstract: Disclosed are polyester-ether polyols and their use in urethane prepolymers, urethane foams and non-foam urethane coatings, adhesives, sealants and/or elastomers. Methods for producing such polyester-ether polyols are disclosed, along with methods for producing urethane prepolymers. The polyester-ether polyols of the instant invention are preferably the reaction product of phthalic anhydride, diethylene glycol, and propylene oxide. These polyester-ether polyols are useful as either the primary polyol in urethane compositions or in combination with conventional auxiliary polyester- and/or polyether-based polyols. The polyester-ether polyols impart greatly improved solubility and compatibility to mixtures of either polyether and/or polyester polyols. The polyester-ether polyols of the instant invention are desirably of lower viscosity than their precursor intermediate polyester polyols and are generally soluble in either polyester- and/or polyether-based polyols.Type: GrantFiled: October 25, 1999Date of Patent: May 27, 2003Assignee: Stepan CompanyInventors: Douglas K. Hillshafer, George Magnus
-
Patent number: 6521676Abstract: Safety clothing is produced by molding polyether-based plastic-forming compositions. Particularly preferred articles of safety clothing produced by this process are safety shoe soles.Type: GrantFiled: May 17, 1999Date of Patent: February 18, 2003Assignee: Bayer AktiengesellschaftInventors: Klaus Brecht, Hans-Detlef Arntz, Bernhard John
-
Patent number: 6495611Abstract: The polyisocyanate polyaddition products comprise hydrophobic compounds plus at least one further compound selected from the group consisting of: (i) organic, cyclic compounds having a molecular weight of from 200 to 3000 g/mol, (ii) salts of metals of transition groups I, II and/or VIII, (iii) organic and/or inorganic acid anhydrides, (iv) cyclic sulfonic esters and/or sulfones, (v) lactones, lactams and/or cyclic esters and/or (vi) &agr;,&bgr;-unsaturated carboxylic acids, &agr;,&bgr;-unsaturated carboxylic acid derivatives, &agr;,&bgr;-unsaturated ketones and/or &agr;,&bgr;-unsaturated aldehydes.Type: GrantFiled: January 24, 2001Date of Patent: December 17, 2002Assignee: BASF AktiengesellschaftInventors: Andreas Arlt, Sarbananda Chakrabarti, Martin Kreyenschmidt, Dieter Rodewald
-
Patent number: 6461536Abstract: A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an oxyethylated fatty acid or fatty alcohol compatibilizing agent having an HLB of from about 7 to about 12. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.Type: GrantFiled: February 5, 1999Date of Patent: October 8, 2002Assignee: BASF CorporationInventors: Joe C. Wilson, Jimmy L. Patterson, James S. Dailey, Walter R. White, III, Robert E. Riley
-
Patent number: 6451430Abstract: A composite polyurethane foam structure and method of preparing the composite structure, which structure includes a semirigid-rigid polyurethane foam layer having bonded, free, unreacted, ethylenically unsaturated groups like allyl or acrylic groups. The structure includes a cured, unsaturated resin composition layer which is chemically bonded to one or both surfaces of the polyurethane foam layer through the polymerization of the allyl or acrylic group in the foam surface with the polyester resin composition.Type: GrantFiled: January 8, 1999Date of Patent: September 17, 2002Assignee: Hehr International Inc.Inventor: Stuart B. Smith
-
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
-
Patent number: 6420443Abstract: A process for preparing hydrocarbon blown rigid polyurethane foam using a novel compatibilizing agent. The compatibilizing agent is an alkoxylate adduct of a triglyceride with a hydroxyl value of about 100 or less. The triglyceride adduct has an ethylene oxide content of at least 40% by weight thereof. These adducts may be used alone or in mixture with other compatibilizers. The compatibilizers increase the stability of rigid foam formulation emulsions containing greatly increased hydrocarbon blowing agent levels while showing little or no adverse affect to physical properties of foams prepared therewith.Type: GrantFiled: September 9, 1999Date of Patent: July 16, 2002Assignee: Crompton CorporationInventors: R. Christopher Clark, Brian L. Hilker
-
Patent number: 6420445Abstract: Elastomers with improved physical properties, particularly hardness, resilience, tear strength, and compression set, may be prepared by the chain extension or moisture cure of isocyanate-terminated prepolymers prepared from a polyol component comprising a high molecular weight, low unsaturation polyoxypropylene diol and a low molecular weight diol. The elastomers are useful for applications such as rollers and other applications for which these physical properties are important.Type: GrantFiled: January 19, 2000Date of Patent: July 16, 2002Assignee: Bayer Antwerp N.V.Inventors: Nigel Barksby, Bruce D. Lawrey, Susan M. Clift
-
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
-
Patent number: 6395798Abstract: Low density microcellular polyurethane foams suitable for athletic shoe midsoles and other applications are prepared by diol chain extension of 12 to 16% free NCO isocyanate-terminated prepolymers prepared by reacting an excess of di- or polyisocyanate with one or more high molecular weight, high functionality polyoxypropylene diols preferably employing water as a reactive blowing agent. The microcellular elastomers exhibit increased hardness despite the higher molecular weight of the polyoxypropylene diol and further exhibit greater tear resistance, lower compression set, and markedly lower shrinkage.Type: GrantFiled: December 21, 1995Date of Patent: May 28, 2002Assignee: Bayer Antwerp, N.V.Inventor: Usama E. Younes
-
Publication number: 20020010224Abstract: A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an oxyethylated fatty acid or fatty alcohol compatibilizing agent having an HLB of from about 7 to about 12. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.Type: ApplicationFiled: February 5, 1999Publication date: January 24, 2002Inventors: JOE C. WILSON, JIMMY L. PATTERSON, JAMES S. DAILEY, WALTER R. WHITE
-
Patent number: 6291538Abstract: A process for preparing a polyurethane foam comprising, reacting a polyol composition comprising a polyol component containing a polyoxypropylene-based polyol having an unsaturation degree of not more than 0.06 meq/g, a catalyst and water with a polyisocyanate compound. The polyurethane foam can be suitably used as shoe soles and the like.Type: GrantFiled: October 21, 1999Date of Patent: September 18, 2001Assignee: Kao CorporationInventors: Makoto Okubo, Takayuki Nomura, Kenichi Suzuki
-
Patent number: 6268402Abstract: A process for producing a rigid foam based on isocyanate comprises reacting an organic and/or modified organic polyisocyanate with a polyol composition and, optionally, a relatively low molecular weight chain extender or crosslinker in the presence of a catalyst, and, optionally, further auxiliaries and/or additives, wherein the polyol composition comprises a phthalic anhydride-initiated polyester polyol, a blowing agent comprising C4-C6 hydrocarbon, and a fatty acid or fatty alcohol ethoxylate compatibilizing agent. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.Type: GrantFiled: February 5, 1999Date of Patent: July 31, 2001Assignee: BASF CorporationInventors: Joe C. Wilson, Jimmy L. Patterson, James S. Dailey, Walter R. White, III, Robert E. Riley
-
Publication number: 20010004647Abstract: This invention relates to flame-laminable polyurethane block foams having high peel strength, a process for their production and the use thereof for textile lamination.Type: ApplicationFiled: December 7, 2000Publication date: June 21, 2001Inventors: Peter Haas, Matth?auml;us Gossner, Klaus-Peter Herzog
-
Patent number: 6245826Abstract: An isocyanate-based rigid foam comprising the reaction product of an organic and/or modified organic polyisocyanate, a resin blend and, optionally, a relatively low molecular weight chain extender or crosslinker in the presence of a catalyst, and, optionally, further auxiliaries and/or additives, wherein the resin blend comprises a phthalic anhydride-initiated polyester polyol, a blowing agent comprising a C4-C6 hydrocarbon, and a fatty acid or fatty alcohol ethoxylate compatibilizing agent. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.Type: GrantFiled: February 5, 1999Date of Patent: June 12, 2001Assignee: BASF CorporationInventors: Joe C. Wilson, Jimmy L. Patterson, James S. Dailey, Walter R. White, III, Robert E. Riley
-
Patent number: 6245825Abstract: Process for preparing a flexible foam by reacting a polyisocyanate having a high 4,4′-MDI content and a polyol having a high EO content in the presence of a foaming agent.Type: GrantFiled: July 2, 1996Date of Patent: June 12, 2001Assignee: Imperial Chemical Industries PLCInventor: Geert Bleys
-
Patent number: 6211257Abstract: Disclosed are methods and compositions for preparing polyurethane foams using emulsified polyol mixture comprising (a) a polyol formulation comprising a polyester polyol having an OH value of from about 150 to 350; and (b) a cell opening agent.Type: GrantFiled: May 15, 2000Date of Patent: April 3, 2001Assignee: Stepan CompanyInventors: Warren Kaplan, Paul Neill
-
Patent number: 6156864Abstract: Propylene oxide is added to an active hydrogen compound in the presence of an alkali metal hydroxide catalyst in an amount of from 0.05 to 0.5 mole per mole of the active hydrogen compound at a reaction temperature of from 60 to 98.degree. C. at a reaction pressure less than or equal to 4 kg/cm.sup.2 to prepare a polyoxyalkylene polyol which has a hydroxyl value of from 10 to 35 mg KOH/g, a monool content less than or equal to 15 mol %, a Head-to-Tail bond selectivity greater than or equal to 96 percent, and low viscosity. A polymer polyol is prepared by polymerizing an ethylenically unsaturated monomer in the polyoxyalkylene polyol. A flexible polyurethane foam is prepared by reacting the polyoxyalkylene polyol or the polymer polyol with an organic polyisocyanate compound in the presence of a foaming agent, a catalyst, a surfactant, a crosslinking agent and other additives.Type: GrantFiled: October 30, 1997Date of Patent: December 5, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Kazuhiko Ohkubo, Tomoki Tsutsui, Yoshitsugu Sakaki, Tamotsu Kunihiro, Ariko Nishikawa, Tsukuru Izukawa
-
Patent number: 6136878Abstract: The present invention relates to very fine cell flexible polyurethane foams having at least 87 pores per linear inch (as measured by pressure drop techniques) wherein at least 65% of the isocyanate equivalents of said polyurethane are obtained from MDI. The invention also relates to processes for preparing the very fine cell polyurethane foams.Type: GrantFiled: February 18, 1997Date of Patent: October 24, 2000Assignee: Foamex, L.P.Inventors: Sharon A. Free, David J. Kelly, Rocco P. Triolo, Robert A. Volz, deceased
-
Patent number: 6130309Abstract: An improved polyurethane is prepared by reacting a diol, an organic diisocyanate and a carboxylic acid with a critical selection of the amount of water in the reaction mixture. The polyurethane has improved adhesion, hydrophilicty and strength. The polymer has improved feel, and washability. Solutions of the polymer have low viscosity in aqueous solutions.Type: GrantFiled: September 20, 1996Date of Patent: October 10, 2000Assignee: Tyndale Plains-Hunter, Ltd.Inventors: Murray H. Reich, Ken Nelson
-
Patent number: 6127443Abstract: Energy absorbing rigid polyurethane foams have both high energy absorbing efficiency as well as exceptional recovery after deformation, allowing their use in visible energy absorbing structures, particularly in the transportation vehicle industry. The foams are prepared by reaction of one or more di- or polyisocyanates with a polyol component containing both high and low molecular weight polyols, and optionally chain extenders, crosslinkers, and other additives, wherein at least one polyol is a polymer polyol such that the total vinyl polymer solids content of the foam is greater than 15 weight percent.Type: GrantFiled: November 6, 1998Date of Patent: October 3, 2000Assignee: Bayer Antwerp N.V.Inventors: Mark J. Perry, James L. Lambach, Frank E. Critchfield
-
Patent number: 6114402Abstract: A polyurethane composition to provide a rigid polyurethane foam suitable for use as a core material in a composite laminate and which polyurethane composition includes an additive compound or oligomer-prepolymer having hydroxy groups for reaction with the diisocyanate of the polyurethane or which has been prereacted with a diisocyanate and which contains after the polyurethane reaction ethylenically unsaturated groups, like allyl or acrylic groups, to react with an unsaturated polyester resin. The invention includes the organic additive oligomer-prepolymer and the hybrid polyester-rigid polyurethane laminates.Type: GrantFiled: October 3, 1997Date of Patent: September 5, 2000Assignee: Hehr International Inc.Inventor: Stuart B. Smith
-
Patent number: 6100309Abstract: A present invention relates to a process for preparing elastic, flexible slabstock foams by reacting polyisocyanates with at least one polyol having a molecular weight from 2,000 to 10,000, having a functionality of 2 to 4, which have at least two hydrogen atoms capable of reacting with said polyisocyanates; at least one polyol having a molecular weight from 400 to 4,000, having a functionality of 4 to 8 and having at least four hydrogen atoms capable of reacting with isocyanates; water and optionally, organic blowing agents; stabilizers; activators; additives and auxiliary agents; optionally, low molecular weight cross-linking agents with a molecular weight of 32 to 399; and liquid CO.sub.2, which is used as an additional blowing agent, and is decompressed in a decompression chamber containing fine-meshed gratings upstream of the discharge point to the conveyer belt.Type: GrantFiled: May 20, 1997Date of Patent: August 8, 2000Assignee: Bayer AktiengesellschaftInventors: Hans-Walter Illger, Peter Haas, Robert Eiben
-
Patent number: 6066681Abstract: Disclosed are methods and compositions for preparing polyurethane foams using emulsified polyol mixture comprising: (a) a polyol formulation comprising a polyester polyol having an OH value of from about 150 to 350; and (b) a cell opening agent.Type: GrantFiled: April 14, 1998Date of Patent: May 23, 2000Assignee: Stepan CompanyInventors: Warren Kaplan, Paul Neill
-
Patent number: 6031010Abstract: The present invention relates to a process for preparing a flexible polyurethane foam from the reaction of a polyisocyanate composition prepared from the reaction of an excess of organic polyisocyanate and a polyether polyol having a high ethylene oxide content and an isocyanate reactive composition comprising a chain extending agent and a combination of a polyether polyol having a high ethylene oxide content and a random copolymer having a high ethylene oxide content, and the product prepared therefrom.Type: GrantFiled: August 11, 1997Date of Patent: February 29, 2000Assignee: Imperial Chemical Industries PLCInventor: Nai Wen Lin
-
Patent number: 6022903Abstract: Microcellular polyurethane elastomers having sharply reduced or virtually no urea linkages may be prepared without resort to organic physical blowing agents by frothing a frothable mixture containing isocyanate reactive polyols and chain extenders, and a frothable isocyanate component. The isocyanate component is derived by reacting a stoichiometric excess of a di- or polyisocyanate with a polyol component containing an ultra-low unsaturation polyol. The froth-produced elastomers surprisingly exhibit greatly improved tear strengths, compression set, and other physical properties as compared to all water-blown microcellular elastomers of the same density.Type: GrantFiled: July 9, 1998Date of Patent: February 8, 2000Assignee: Arco Chemical Technology L.P.Inventors: Usama E. Younes, Gary L. Allen, Nigel Barksby
-
Patent number: 5916994Abstract: Propylene oxide is added to an active hydrogen compound in the presence of an alkali metal hydroxide catalyst in an amount of from 0.05 to 0.5 mole per mole of the active hydrogen compound at a reaction temperature of from 60 to 98.degree. C. at a reaction pressure less than or equal to 4 kg/cm.sup.2 to prepare a polyoxyalkylene polyol which has a hydroxyl value of from 10 to 35 mg KOH/g, a monool content less than or equal to 15 mol %, a Head-to-Tail bond selectivity greater than or equal to 96 percent, and low viscosity. A polymer polyol is prepared by polymerizing an ethylenically unsaturated monomer in the polyoxyalkylene polyol. A flexible polyurethane foam is prepared by reacting the polyoxyalkylene polyol or the polymer polyol with an organic polyisocyanate compound in the presence of a foaming agent, a catalyst, a surfactant, a crosslinking agent and other additives.Type: GrantFiled: October 30, 1997Date of Patent: June 29, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Tsukuru Izukawa, Tamotsu Kunihiro, Ariko Nishikawa
-
Patent number: 5891928Abstract: A flexible, flame-bondable polyurethane-polyether block foam is prepared by a process in which at least one diol is added to the block foam.Type: GrantFiled: August 25, 1998Date of Patent: April 6, 1999Assignee: BASF AktiengesellschaftInventors: Sarbananda Chakrabarti, Klaus Wagner
-
Patent number: 5889068Abstract: This invention relates to molded articles comprising micro cellular polyurethane foams, preferably integral skin foams. These exhibit improved properties and are particularly suitable for soling systems in footwear. The present invention also relates to a process for the production of these molded articles. These molded articles comprise the reaction product of (A) an isocyanate comprising a stable, liquid MDI based prepolymer containing an allophanate-modified MDI, with (B) an isocyanate reactive component, in the presence of (C) at least one blowing agent.Type: GrantFiled: July 24, 1997Date of Patent: March 30, 1999Assignee: Bayer CorporationInventors: Edmund J. Madaj, William E. Slack
-
Patent number: 5874484Abstract: The present invention relates to a mixture of polyols for use in the preparation of polyurethane foam comprising:(i) 80-99% by weight of at least one polyether polyol and/or at least one polyester polyol; and(ii) 1-20% by weight of at least one polyolefin polyol.The invention further relates to a process for preparing polyurethane foams, using the said mixture of polyols; to polyurethane foams obtainable by such process; and to articles and composites containing the said polyurethane foams.Type: GrantFiled: October 23, 1997Date of Patent: February 23, 1999Assignee: Shell Oil CompanyInventors: Veerle Maria Rafaela Dirckx, Eric-Jack Gerard, Hans Ferdinand Vermeire
-
Patent number: 5874485Abstract: This invention relates to flexible foams and flexible molded foams prepared from an isocyanate component comprising an allophanate-modified diphenylmethane diisocyanate. The present invention also relates to processes for the production of these flexible foams and flexible molded foams.Type: GrantFiled: November 10, 1997Date of Patent: February 23, 1999Assignee: Bayer CorporationInventors: Charles M. Milliren, Sanjeev Madan, William E. Slack, Ronald Zibert, Richard A. Riccitelli, William E. Miller
-
Patent number: 5821275Abstract: This invention relates to flexible foams and flexible molded foams prepared from an isocyanate blend comprising an allophanate modified MDI, a polyether polyol, and a polymethylene poly(phenyl isocyanate). The present invention also relates to processes for the production of these flexible foams and flexible molded foams.Type: GrantFiled: November 10, 1997Date of Patent: October 13, 1998Assignee: Bayer CorporationInventors: Sanjeev Madan, William E. Slack, Jay M. Capelli
-
Patent number: 5798533Abstract: A polyol composition is provided which when reacted with and organic isocyanate, has good flow characteristics and makes an all water blown rigid polyurethane foam having good dimensional stability at low core densities of 1.1 pcf to 2.0 pcf. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less, an average functionality of 3.1 or greater, and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and an equivalent weight of greater than 130. The polyol composition also has water as the blowing agent, and further contains a blow catalyst, a delayed action gel catalyst, and preferably a cure catalyst and a surfactant.Type: GrantFiled: April 21, 1995Date of Patent: August 25, 1998Assignee: BASF CorporationInventors: Thomas L. Fishback, Curtis J. Reichel, Thomas B. Lee
-
Patent number: 5770635Abstract: A polyol composition is provided which when reacted with an organic isocyanate, has good flow characteristics and makes a rigid polyurethane foam having good dimensional stability at low densities. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and a viscosity of 5,000 cp or less at 25.degree. C. The polyol composition also has formic acid or a mixture of formic acid and water as blowing agents, and further contains a delayed action blow catalyst and a delayed action gel catalyst.Type: GrantFiled: December 15, 1995Date of Patent: June 23, 1998Assignee: BASF CorporationInventors: Thomas B. Lee, Thomas L. Fishback, Curtis J. Reichel
-
Patent number: 5739253Abstract: This invention relates to a process for the production of polyurethane/urea elastomers from a reaction injection molding process of a reaction mixture on the presence of a catalyst via the one-shot process. The isocyanate component of this invention is a prepolymer based on a cycloaliphatic diisocyanate, and having an NCO content of 12-27%, an average isocyanate functionality of less than 2.3, a monomer content of greater than about 25% by weight, and containing urethane or urea groups. The isocyanate-reactive blend comprises a high molecular weight polyether polyol and a low molecular weight chain extender wherein the equivalent ratio of hydroxyl groups to amine groups of the chain extender is from 1:2 to 20:1. This invention also relates to the polyurethane/urea molded article produced by the above process.Type: GrantFiled: June 4, 1996Date of Patent: April 14, 1998Assignee: Bayer CorporationInventors: Neil H. Nodelman, David D. Steppan
-
Patent number: 5736587Abstract: The present invention is directed to a process for the preparation of a molded product. The method requires the introduction of a polyurethane foam forming reaction mixture into a mold. The present invention is directed to the use of a metal carboxylate salt of an amino acid as a catalyst for the reaction.Type: GrantFiled: May 30, 1995Date of Patent: April 7, 1998Assignee: Bayer CorporationInventors: Craig M. Sungail, Kenneth R. Riddle
-
Patent number: 5731398Abstract: A black colorant composition useful for coloring polyurethanes is provided having a red benzothiazole azo colorant which, when combined with a complementary blue and yellow colorant, exhibits low flairing.Type: GrantFiled: May 31, 1996Date of Patent: March 24, 1998Assignee: Milliken Research CorporationInventors: Mark Edward Ragsdale, David Jesse Moody, Eric B. Stephens
-
Patent number: 5730896Abstract: A method the preparation of rigid foams by reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promoter characterised in that the isocyanate-reactive material comprises at least one isocyanate-reactive cyclic carbonate or isocyanate-reactive cyclic urea, the reaction being performed in the presence of an inert insoluble organic liquid which is present as the dispersed phase of an emulsion or a microemulsion, and in the presence of a metal salt catalyst.Type: GrantFiled: June 7, 1995Date of Patent: March 24, 1998Assignee: Imperial Chemical Industries PLCInventors: Herbert Russell Gillis, Dirk Stanssens, Rik De Vos, Aaldrik Roelf Postema, David Randall
-
Patent number: 5728745Abstract: Elastomers exhibiting decreased demold times and improved green strength are prepared by reacting a di- or polyisocyanate with a monodisperse polyoxypropylene diol having ultra-low unsaturation, and preferably prepared by the double metal cyanide.t-butyl alcohol catalyzed polymerization of propylene oxide. Further improved demold times and elevated elastomer physical properties are made possible bythe use of multidisperse polyoxyalkylene polyether polyol blends having an overall unsaturation of less than 0.010 meq/g and a polydispersity of about 1.4 or greater.Type: GrantFiled: December 19, 1996Date of Patent: March 17, 1998Assignee: Arco Chemical Technology, L.P.Inventors: Gary L. Allen, Nigel Barksby, Stephen D. Seneker, Usama E. Younes
-
Patent number: 5710230Abstract: This invention relates to a process for the production of polyurethane/urea moldings from a reaction injection molding process by processing the reaction mixture consisting of a diisocyanate and an isocyanate-reactive component via the one-shot process at an isocyanate index of about 80 to 130. The diisocyanate is an unmodified cycloaliphatic diisocyanate. The isocyanate-reactive component consists of 1) at least one polyol having functional groups which are hydroxyl groups, amine groups, or mixtures of hydroxyl groups and amine groups such that the equivalent ratio of hydroxyl groups to amine groups is from 0:1 to 1:1, and 2) at least one chain extender which is selected from diols, triols, primary aliphatic amines, secondary aliphatic amines, aminoalcohols and mixtures thereof. The equivalent ratio of hydroxyl groups to amine groups in the chain extender component is from 1:2 to 10:1.Type: GrantFiled: June 4, 1996Date of Patent: January 20, 1998Assignees: Bayer Corporation, Bayer AktiengesellschaftInventors: David D. Steppan, Neil H. Nodelman, Eduard Mayer, A. Donald Meltzer, Albert Magnotta
-
Patent number: 5700847Abstract: Isocyanate-terminated-prepolymers prepared from polyoxyalkylene polyether polyols having low unsaturation are suitable for producing polyurethane molded foam having exceptional physical properties. Preferably, the foams are all water blown, and process well. The foams are noted for concomitant increases in both tensile strength and elongation as well as displaying excellent wet set and other properties.Type: GrantFiled: December 4, 1995Date of Patent: December 23, 1997Assignee: Arco Chemical Technology, L.P.Inventor: Andrew M. Thompson
-
Patent number: 5700869Abstract: The invention provides polyurethane components and compositions capable of providing internal mold release properties in SRIM applications. The polyol composition of the invention has an isocyanate reactive polyol (A) having a number average molecular weight from 100 to about 10,000 and an effective amount of internal mold release composition (B) having a silicon-containing polymer (a) and an at least diester functional compound (b) which is the reaction product of (i) an aromatic carboxylic acid, and (ii) alcohols having from 2 to 30 carbons. The invention further provides an SRIM polyurethane composition useful in the preparation of molded polyurethane articles having internal mold release properties, the composition comprising an isocyanate component (I) and the isocyanate reactive polyol composition (component (II)) disclosed above.Type: GrantFiled: December 14, 1995Date of Patent: December 23, 1997Assignee: BASF CorporationInventor: James Turnbach
-
Patent number: 5698609Abstract: An open-celled polyurethane foam is provided having a density of 1.5 to 5.0 pcf, a G value of 30 to 80 over a static load range of 1.0 to 2.0 psi based on a 2.0 inch thickness and a 24 inch drop height and, an airflow in the range of 0.05 to 0.5 scfm, 25% as compressive strength of 4.Type: GrantFiled: November 14, 1996Date of Patent: December 16, 1997Assignee: Imperial Chemical Industries PlcInventors: Robert John Lockwood, Brian Fogg