Organic Silicon Compound Contains An Ether Group Patents (Class 521/112)
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Patent number: 5605762Abstract: 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 epoxidized ester (b). 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. In another aspect of the invention, the invention provides methods of using the claimed compositions as well as the rigid cellular polyurethane SRIM articles resulting from such processes.Type: GrantFiled: May 24, 1995Date of Patent: February 25, 1997Assignee: BASF CorporationInventors: Richard P. Harrison, Bari W. Brown, Richard C. Rossio, Gladys M. Aviles, Edward M. Dexheimer, David Ho
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Patent number: 5596021Abstract: The present invention relates to a crosslinkable polyester/isocyanate composition suitable for preparing composite manufactured articles endowed with high structural mechanical properties, by means of injection processes, comprising:A--a polyfunctional isocyanate;B--an unsaturated polyester resin, or a vinyl ester resin, or a mixture of both said resins, wherein said resin can contain free hydroxy groups;C--a free-radical polymerization initiator;D--a promoter of decomposition of (C) initiator;E--a catalyst of (A) isocyanate trimerization.Type: GrantFiled: September 15, 1994Date of Patent: January 21, 1997Assignee: Sir Industriale S.p.A.Inventors: Andrea Adembri, Lino Credali, Giovanni Di Drusco
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Patent number: 5594037Abstract: 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 epoxidized ester (b). 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. In another aspect of the invention, the invention provides methods of using the claimed compositions as well as the rigid cellular polyurethane SRIM articles resulting from such processes.Type: GrantFiled: May 24, 1995Date of Patent: January 14, 1997Assignee: BASF CorporationInventors: Richard P. Harrison, Bari W. Brown, Richard C. Rossio, Gladys M. Aviles, Edward M. Dexheimer, David Ho
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Patent number: 5583197Abstract: 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 epoxidized ester (b). 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. In another aspect of the invention, the invention provides methods of using the claimed compositions as well as the rigid cellular polyurethane SRIM articles resulting from such processes.Type: GrantFiled: May 24, 1995Date of Patent: December 10, 1996Assignee: BASF CorporationInventors: Richard P. Harrison, Bari W. Brown, Richard C. Rossio, Gladys M. Aviles, Edward M. Dexheimer, David Ho
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Patent number: 5550169Abstract: A flexible or semi-hard polyurethane foam is prepared from a blend containing a polyhydroxyl compound, an isocyanate, a blowing agent, a catalyst, and a foam stabilizer. A polyolefin polyol is used as the polyhydroxyl compound. A carboxy, epoxy or methacryl-modified organosilicone is used as the foam stabilizer. The resulting polyurethane foam is impermeable to water.Type: GrantFiled: August 19, 1994Date of Patent: August 27, 1996Assignee: Bridgestone CorporationInventors: Tatsuo Yata, Hideya Kinoshita
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Patent number: 5547608Abstract: 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 epoxidized ester (b). 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. In another aspect of the invention, the invention provides methods of using the claimed compositions as well as the rigid cellular polyurethane SRIM articles resulting from such processes.Type: GrantFiled: September 9, 1994Date of Patent: August 20, 1996Assignee: BASF CorporationInventors: Richard P. Harrison, Bari W. Brown, Richard C. Rossio, Gladys M. Aviles, Edward M. Dexheimer, David Ho
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Patent number: 5525640Abstract: It has now been found that the use of inert gases as an auxiliary blowing agent in flexible polyurethane foams places unexpected requirements on the composition of the silicone surfactants used in such foams. Typical silicone polyalkylene oxide polyether copolymer comb-type surfactants containing greater than about 37% ethylene oxide in the pendant polyether chains cause large cells when added inert gas is used as the blowing agent.Type: GrantFiled: September 13, 1995Date of Patent: June 11, 1996Assignee: OSi Specialties, Inc.Inventors: Richard M. Gerkin, Mark E. Harakal, Lee F. Lawler, Glenn A. Miller
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Patent number: 5492939Abstract: Silicone surfactants having a siloxane backbone and polyether pendants having average atomic masses of 2250. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams without splits. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.Type: GrantFiled: April 12, 1995Date of Patent: February 20, 1996Assignee: Dow Corning CorporationInventors: Michael A. Stanga, John H. Frey, Robert F. Hoffman, Robert E. Stevens
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Patent number: 5489617Abstract: The present invention discloses high viscosity surfactants which may be used, when diluted to a viscosity below 2500 cP at 25.degree. C., as surfactants for the production of polyuretahne foam. Specifically, the surfactants of the present invention have the generalized average formula M*D.sub.x D".sub.y M* whereinM* is (CH.sub.3).sub.3 SiO.sub.1/2 or R(CH.sub.3).sub.2 SiO.sub.1/2 ;M" is R(CH.sub.3).sub.2 SiO.sub.1/2 ;D is (CH.sub.3).sub.2 SIO.sub.2/2 ;D" is (CH.sub.3)(R)SiO.sub.2/2 ;x is 81-220, y is 8-40 and D/(D"+M").ltoreq.10;R is a polyether-containing substituent derived from a blend of C.sub.n H.sub.2n -started polyethers selected from two different groups such that the average molecular mass is 1100-1800.Type: GrantFiled: May 8, 1995Date of Patent: February 6, 1996Assignee: OSi Specialties, Inc.Inventors: Glenn A. Miller, David L. Kirchner, Susan B. McVey
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Patent number: 5480916Abstract: High resilience polyurethane foams are produced by reacting a mixture of highly reactive polyols having a weight average molecular weight between about 4800 and 6500 g/mole and containing at least 70% primary hydroxyl groups and optionally fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers. The inventive stabilizers can be used universally in high resilience slabstock foam systems as well as in high resilience molded foam systems and in formulations based on pure TDI, TDI/MDI mixtures as well as on pure MDI in combination with appropriate polyols.Type: GrantFiled: April 28, 1995Date of Patent: January 2, 1996Assignee: Th. Goldschmidt AGInventors: Anette Brune-Fischer, Georg Burkhart, Bernd-Jurgen Klietsch, Volker Zellmer
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Patent number: 5472987Abstract: Surfactants for conventional flexible polyurethane foam may be improved by the addition of a minor amount of an organic acid salt.Type: GrantFiled: June 25, 1991Date of Patent: December 5, 1995Assignee: OSi Specialties, Inc.Inventors: James D. Reedy, Richard T. Robertson
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Patent number: 5401785Abstract: Foamed polyurethanes substantially free from non-uniform density distribution are obtained by dispersing an inert gas with mechanical stirring into a foamed polyurethane-forming composition containing substantially no blowing agent and comprising (1) an organic polyisocyanate component, (2) a polyol component comprising a high molecular weight polyol (A1) and a low molecular weight polyol (A2), (3) a dehydrating agent (B) and optionally organic microballoons, and curing the resulting composition containing therein the inert gas substantially homogeneously distributed. Foamed polyurethanes thus obtained are lightweight and of reduced warpage after processing and are suitable for model materials.Type: GrantFiled: December 27, 1993Date of Patent: March 28, 1995Assignee: Sanyo Chemical Industries, Ltd.Inventors: Yasushi Kumagai, Sukeo Ban, Yuichi Sasatani
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Patent number: 5389692Abstract: A co-polymer composition for coating porous structural material includes a compatible surfactant resulting in a structural inter-bonding between the coating composition and the structural material. The co-polymer composition cured in a layer of unsupported foam has sufficient strength to be used as a substitute for comparably or larger sized layers of re-enforced concrete for conducting fluids while resisting compressive loads. A co-polymer foam composition for coating structural material cures to have an atmosphere-facing surface that is substantially impervious to corrosive substance penetration.Type: GrantFiled: August 25, 1993Date of Patent: February 14, 1995Inventor: Richard L. Bertram
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Patent number: 5362764Abstract: A closed cell, rigid polyisocyanurate foam which comprises the reaction product of a polyisocyanate and a polyol in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent, and (b) a siloxane oxyalkylene copolymer (i) having a molecular weight below about 7500 and an oxyalkylene portion containing greater than 60 weight percent of oxyethylene units and (ii) being prepared by the reaction of an organohydrogensiloxane with a polyoxyalkylene in an essentially solventless system or in the presence of a high boiling point polar polyol.Type: GrantFiled: February 28, 1994Date of Patent: November 8, 1994Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Kenneth G. Trout
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Patent number: 5321051Abstract: Polysiloxane-polyoxyalkylene block copolymers, which are intended for the production of polyurethane foams, are prepared. The foams obtained have an improved, finer cell structure and the collapse of the foams is reduced. It is essential for the invention that a mixture of polyoxyalkylene groups is present in the polysiloxane-polyoxyalkylene block copolymers. Further particulars are laid down for selecting the different polyoxyalkylene groups with regard to the respective molecular weights and the ratio of polyoxyalkylene groups to one another.Type: GrantFiled: October 29, 1993Date of Patent: June 14, 1994Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier, Volker Zellmer
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Patent number: 5312845Abstract: In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane or polyurethaneurea elastomer by reaction injection molding, the improvement which comprises a mold release composition consisting essentially of (1) the reaction product of a mixture of a carboxylic acid, a tertiary amine, and a reactive epoxide and (2) a carboxy functional siloxane.Type: GrantFiled: December 16, 1992Date of Patent: May 17, 1994Assignee: Air Products and Chemicals, Inc.Inventor: John E. Dewhurst
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Patent number: 5308880Abstract: An active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane, polyurethaneurea and/or polyurea elastomer by reaction injection molding, which B-side composition comprises an acidic mold release composition, diethyltoluenediamine chain extender and, as a catalyst, a diorganotin dicarboxylate in which the carboxylate contains at least one alpha halogen atom.Type: GrantFiled: May 20, 1993Date of Patent: May 3, 1994Assignee: Air Products and Chemicals, Inc.Inventors: John E. Dewhurst, James D. Nichols, Ann C. L. Savoca
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Patent number: 5308881Abstract: A closed cell, rigid polyisocyanurate foam which comprises the reaction product of a polyisocyanate and a polyol in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent, and (b) a siloxane oxyalkylene copolymer (i) having a molecular weight below about 7500 and an oxyalkylene portion containing greater than 60 weight percent of oxyethylene units and (ii) being prepared by the reaction of an organohydrogensiloxane with a polyoxyalkylene in an essentially solventless system or in the presence of a high boiling point polar polyol.Type: GrantFiled: October 25, 1993Date of Patent: May 3, 1994Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Kenneth G. Trout
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Patent number: 5306737Abstract: Polysiloxane-polyoxyalkylene block copolymers having different polyoxyalkylene blocks in the average molecule are prepared. The mixture of the polyoxyalkylene blocks consists of at least one polyoxyalkylene group A and at least one polyoxyalkylene group B and/or at least one polyoxyalkylene group C, each polyoxyalkylene group A having an average molecular weight of 600 to 5,500 and consisting of 20 to 90% by weight of oxyethylene units and 80 to 10% by weight of oxypropylene units, polyoxyalkylene group B having an average molecular weight of 500 to 5,000 and consisting of 2 to 19% by weight of oxyethylene units and 98 to 81% by weight of oxypropylene units, polyoxyalkylene group C having an average molecular weight of 1,500 to 4,500 and consisting of oxypropylene units. Up to 20% by weight of the oxypropylene units is replaceable by oxybutylene units and the molar ratio of polyoxyalkylene groups A to the sum of the polyoxyalkylene groups B and C is 1:4 to 4:1.Type: GrantFiled: August 26, 1993Date of Patent: April 26, 1994Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier, Volker Zellmer
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Patent number: 5270427Abstract: The invention disclosed herein deals with acyloxy endblocked polyethers having improved hydrolytic stability. This invention also deals with polysiloxane-polyoxyalkylene copolymers having improved hydrolytic stability and, with compositions which include the polysiloxane-polyoxyalkylene copolymers in the presence of water, and to methods for use of the polysiloxane-polyoxyalkylene copolymers to prepare polyurethane foams.Type: GrantFiled: November 6, 1992Date of Patent: December 14, 1993Assignee: Dow Corning CorporationInventor: Andrew H. Ward
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Patent number: 5266234Abstract: The invention pertains to a water blown integral skin polyurethane foam having a skin with good abrasion resistance. The foam is manufactured by employing as a polyol composition a polyol having a functionality of from 1.75 to 2.65 and a molecular weight of from 1500 to 5000 along with a surfactant and water as a blowing agent. The particular surfactant is a particular siloxane or an ethylene oxide adduct of octylphenol.Type: GrantFiled: May 11, 1993Date of Patent: November 30, 1993Assignee: BASF CorporationInventors: David J. Ho, David B. McCulloch
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Patent number: 5244613Abstract: It has been found that the use of specific expanded organic microspheres greatly improve the RIM process by (i) significantly enhancing the blowing action of air and/or nitrogen, (ii) providing for uniform density of the molded part, (iii) allowing for the reduction of internal mold pressures, (iv) substantially eliminating surface defects, (v) allowing for a significant reduction in density in the molded product, (vi) allowing for a substantial increase in the amount of air and/or nitrogen that can be dissolved in the isocyanate-reactive component, and (vii) significantly reducing shrinkage in the molded part.Type: GrantFiled: January 21, 1993Date of Patent: September 14, 1993Assignee: Miles Inc.Inventors: Michael F. Hurley, Terry D. Seagraves
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Patent number: 5216041Abstract: The invention relates to energy absorbing, water blown, rigid polyurethane foams. The foams of the present invention are low density, predominantly open-celled foams which exhibit a relatively constant consistency of compressive strength over deflection. Such foams are suitable as light weight alternatives in traditional energy absorbing applications.Type: GrantFiled: June 4, 1992Date of Patent: June 1, 1993Assignee: BASF CorporationInventors: Richard C. Rossio, Mark A. Easterle, Michael L. Jackson
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Patent number: 5211873Abstract: A blowing agent emulsion comprising a blowing agent mixture, such that the mixture comprises (1) one or more low boiling, hydrochlorocarbons, (2) one or more low boiling chlorine-free perfluorinated compound, and (3) optionally, one or more low boiling, hydrochlorofluorocarbons, one or more low boiling, hydrofluorocarbons, one or more low boiling hydrocarbons, or mixtures thereof; a foamable polymerizable reaction mixture, and a fluorochemical surfactant, optionally, a silicone surfactant, and a catalyst; a foamed plastic; and a process for making thereof.Type: GrantFiled: July 21, 1992Date of Patent: May 18, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Rudolf J. Dams, Richard M. Flynn, Koen Focquet, John G. Owens
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Patent number: 5198474Abstract: Siloxane-polyether copolymer surfactants for manufacture of high resiliency polyurethane foam which are capped with t-butyl groups on the ends of the polyether blocks, polyurethane foam compositions containing such surfactants, a method for making polyurethane foam using such surfactants, and polyurethane foam made the method are disclosed and claimed. The t-butyl-capped surfactants afford improved surfactant potencies and foam breathabilities relative to the commonly-employed methyl-capped surfactants.Type: GrantFiled: June 30, 1992Date of Patent: March 30, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: John A. Kilgour
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Patent number: 5194452Abstract: The invention disclosed herein deals with acyloxy endblocked polyethers having improved hydrolytic stability. This invention also deals with polysiloxane-polyoxyalkylene copolymers having improved hydrolytic stability and, with compositions which include the polysiloxane-polyoxyalkylene copolymers in the presence of water, and to methods for use of the polysiloxane-polyoxyalkylene copolymers to prepare polyurethane foams.Type: GrantFiled: May 26, 1992Date of Patent: March 16, 1993Assignee: Dow Corning CorporationInventor: Andrew H. Ward
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Patent number: 5192812Abstract: Compositions including silicone surfactants of the type used in manufacturing urethane foams and certain siloxane-oxyalkylene copolymers which act as cell openers when employed in combination with silicone surfactants in urethane foam manufacture are disclosed and claimed, as are urethane foam compositions including such cell operers, a method of preparing urethane foams using such cell operers, and urethane foams prepared by the method.Type: GrantFiled: February 12, 1991Date of Patent: March 9, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: David D. Farris, James D. Reedy, Raymond L. Cobb
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Patent number: 5187204Abstract: The invention relates to water blown, low density, energy absorbing rigid polyurethane foam articles which exhibit minimal springback or hysteresis characteristics. The articles produced from the foams of the present invention maintain a constant crush strength of material up to about 70% deflection and are useful in appropriate automotive applications such as side impact bolsters.Type: GrantFiled: December 27, 1990Date of Patent: February 16, 1993Assignee: BASF CorporationInventors: Michael L. Jackson, Mark A. Easterle
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Patent number: 5169872Abstract: What is disclosed is a process for obtaining polyurethane foams having enhanced benefits. The invention disclosed herein provides a system flowability of the reacting foam mixture to give foams with an insulating capablity equal to the foams that are provided by chlorofluorocarbon blown system, while doing away with the chlorofluorocarbons.Type: GrantFiled: May 11, 1992Date of Patent: December 8, 1992Assignee: Dow Corning CorporationInventors: Lenin J. Petroff, James D. Thornsberry
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Patent number: 5167884Abstract: The invention relates to energy absorbing, water blown, rigid polyurethane foams. The foams of the present invention are low density, predominantly open celled foams which exhibit a relatively constant consistency of compressive strength over deflection. Such foams are suitable as light weight alternatives in traditional energy absorbing applications.Type: GrantFiled: March 23, 1992Date of Patent: December 1, 1992Assignee: BASF CorporationInventors: Richard C. Rossio, Mark A. Easterle, Michael L. Jackson
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Patent number: 5162384Abstract: A blowing agent emulsion comprising at least one low boiling, perfluorinated, N-aliphatic, cyclic 1,3-, or 1,4-aminoether blowing agent, a foamable polymerizable reaction mixture, and a fluorochemical surfactant, optionally, a silicone surfactant, and optionally, a catalyst; a foamed plastic, and a process for making thereof.Type: GrantFiled: September 13, 1991Date of Patent: November 10, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: John G. Owens, Koen Focquet, Richard M. Flynn, Rudolf J. Danis
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Patent number: 5153232Abstract: A polyurea elastomer foam is disclosed. Specifically, the polyurea foam of this invention includes an (A) component including an isocyanate and a (B) component including (1) a primary amine terminated polyoxyalkylene polyol, (2) a chain extender, (3) water employed as the sole blowing agent and (4) a surfactant employed as a foam stabilizer. The polyurea foam of this invention is characterized as a rigid, closed cell foam.Type: GrantFiled: February 8, 1991Date of Patent: October 6, 1992Assignee: Texaco Inc.Inventor: Dudley J. Primeaux, II
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Patent number: 5145879Abstract: Silicone surfactants having a siloxane backbone and a mixture of high and low atomic mass oxyalkylene pendant groups, these polyether pendants having average atomic masses of 1500-6000 and 300-750 respectively. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams having relatively constant breathability. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.Type: GrantFiled: December 31, 1990Date of Patent: September 8, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Richard A. Budnik, Charles H. Blevins, II, Gerald J. Murphy, Wojciech Grabowski, Raymond L. Cobb
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Patent number: 5143941Abstract: The invention relates to energy absorbing, water blown, rigid polyurethane foams. The foams of the present invention are low density, predominantly open celled foams which exhibit a relatively constant consistency of compressive strength over deflection. Such foams are suitable as light weight alternatives in traditional energy absorbing applications.Type: GrantFiled: November 21, 1991Date of Patent: September 1, 1992Assignee: BASF CorporationInventors: Richard C. Rossio, Mark A. Easterle, Jackson
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Use of polysiloxane polyoxyalkylene block copolymers for the preparation of rigid polyurethane foams
Patent number: 5130344Abstract: A process of preparing rigid polyurethane foams is disclosed, wherein polysiloxane polyoxyalkylene block copolymers which have at least one aminofunctional group of the general formula, ##STR1## which is linked to a silicon atom, are used in an amount of 0.2 to 5% by weight, based on the polyol or the prepolymer having isocyanate groups, to provide polyurethane foams, which otherwise contain closed cells, with at least partially open the cells.Type: GrantFiled: August 30, 1990Date of Patent: July 14, 1992Assignee: Th. Goldschmidt AGInventors: Hans-Joachim Kollmeier, Rolf-Dieter Langenhagen, Helmut Schator, Christian Weitemeyer -
Patent number: 5126379Abstract: Novel esters containing bonded fluorocarbon and oxypropylenealkylether groups and of the formula ##STR1## where Rf is straight-chain or branched, partially fluorinated or perfluorinated alkyl of 2 to 10 carbon atoms, partially fluorinated or perfluorinated cycloalkyl of 4 to 8 carbon atoms,perfluorophenyl orperfluoroalkylphenyl where the perfluoroalkyl radical is of 1 to 6 carbon atoms,R is straight-chain or branched alkyl of 1 to 4 carbon atoms andn is an integer from 2 to 70,blowing agent-containing emulsions which have a long shelf life and contain at least one partially fluorinated or perfluorinated (cyclo)aliphatic hydrocarbon of 3 to 8 carbon atoms and/or sulfur hexafluoride, at least one unmodified or modified organic polyisocyanate or a relatively high molecular weight reactive hydrogen compound and at least one of the abovementioned carboxylic or carbamic esters, and the use of these emulsions for the preparation of cellular plastics by the polyisocyanate polyaddition method.Type: GrantFiled: December 18, 1990Date of Patent: June 30, 1992Assignee: BASF AktiengesellschaftInventors: Otto Volkert, Werner Hinz
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Patent number: 5124368Abstract: It has been discovered that a particular polyurethane formulation may be used to prepare "pour-in-place" (PIP) polyurethane foam articles where the formulation is injected into a mold bearing an exterior covering such as a fabric without the foaming liquid striking through the layer. The formulation employs a hydrophilic polyhydric compound to help the reactivity balance that minimizes penetration of the exterior covering while also stabilizing the rising foam against shear collapse without excessively tightening the foam. Contrary to the conventional expectation that the hydrophilic polyhydric compound would cause strike through problems since it delays the initial reaction time, it has been found to have the noted stabilizing effect. A preferred hydrophilic polyhydric compound is glycerine. A preferred isocyanate for the formulation is tolylene diisocyanate (TDI), in contrast to diphenylmethane diisocyanate (MDI) heretofore used in PIP foams.Type: GrantFiled: July 29, 1991Date of Patent: June 23, 1992Assignee: ARCO Chemical Technology, L.P.Inventors: William A. Gill, Siusun K. Leung
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Patent number: 5120770Abstract: A process for the production of an open cell polyurethane foam comprises the mixing of the following components at ambient temperatures in a mixing zone: a diisocyanate having a functionality of at least about 2.0, at least one hydrogen donor, at least one surfactant which is effective in forming an open cell polyurethane foam, at least one catalyst, and a blowing agent comprising a gas having a boiling point below approximately -100.degree. F. at atmospheric pressure which preferably comprises carbon dioxide. In addition, the mixture may also optionally contain water. The mixture is subjected to a pressure in said mixing zone which is sufficient to maintain the blowing agent in the liquid state at ambient temperatures. After mixing, the mixture is ejected from the mixing zone to atmospheric pressure, thereby completely and instantaneously vaporizing the blowing agent to provide expansion of the mixture. The resultant foam is then cured at ambient temperatures.Type: GrantFiled: November 29, 1989Date of Patent: June 9, 1992Inventors: Earl N. Doyle, Scott Carson
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Patent number: 5112877Abstract: Polyisocyanate composition comprising an organo clay and a cyclic alkylene carbonate. The composition is useful for wood-binding, preparing polyurethanes and rigid and flexible polyurethane foams.Type: GrantFiled: September 20, 1989Date of Patent: May 12, 1992Assignee: Imperial Chemical Industries PLCInventors: Martin C. Barker, James P. Brown, Anthony Cunningham, David Randall
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Patent number: 5104907Abstract: A process for producing a high resilience polyurethane foam by reacting a polyol with a polyisocyanate in the presence of a catalyst, a blowing agent, and a foam stabilizer; said polyisocyanate containing at least diphenylmethane diisocyanate and/or a mixture of diphenylmethane diisocyanate with a derivative thereof, the blowing agent being water, or water and a halogenated hydrocarbon in amounts of not less than 2 parts by weight of water and not more than 20 parts by weight of the halogenated hydrocarbon based on 100 parts by weight of the polyol, and the catalyst being at least one selected from the compounds represented by the formula (I) below: ##STR1## where R.sup.1 is alkyl having 1 to 4 carbons, dimethylaminopropyl, benzyl, vinyl, or hydroxyalkyl having 1 to 3 carbons; R.sup.2 is hydrogen, alkyl having 1 to 4 carbons, alkyl, benzyl or phenyl; and R.sup.3 and R.sup.4 are independently hydrogen, alkyl having 1 to 4 carbons, or hydroxymethyl.Type: GrantFiled: July 30, 1990Date of Patent: April 14, 1992Assignee: Tosoh CorporationInventors: Hiroyuki Yoshimura, Shuichi Okuzono, Shoji Arai
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Patent number: 5102918Abstract: A modified organic polyisocyanate is prepared in such a manner that a trimerization catalyst, an organic phosphite estr, and a surfactant, and optionally a ferrocene compound are added to an organic isocyanate and/or a partially urethanized organic polyisocyanate to cause isocyanuration in an extent that not more than 20% by weight of entire isocyanate groups are isocyanurated; and a stopper is added, if necessary.Type: GrantFiled: January 9, 1991Date of Patent: April 7, 1992Assignee: Nippon Polyurethane Industry Co., Ltd.Inventor: Kiyoshi Moriya
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Patent number: 5098936Abstract: This invention relates to an impact resistant material composed of polyether-based micro-cellular polyurethane foam:more particularly, however, this invention relates to the impact resistant polyurethane foam having a new physical property, and a methods of foamed polyurethane as set forth hereunder, demonstrating a remarkable impact resistance effect and recovery force as well and furthermore, making it possible to control the specific gravity of molding in manufacture:mixing the prepolymer containing residual isocyanate or isocyanate monomer with resin consisting of ether-type polyol, plasticizer, and organic siloxane and casting this mixture for the preparation of foamed molding.Type: GrantFiled: October 1, 1990Date of Patent: March 24, 1992Assignee: Dong Sung Chemical Ind. Co., Ltd.Inventors: Jin S. Choi, Jae M. Lee, Hyeong S. Kim
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Patent number: 5093376Abstract: A method is disclosed for the preparation of flexible polyester polyurethane foam by reaction of at least difunctional polyesterols with at least difunctional organic isocyanates in the presence of catalysts and a stabilizer mixture of organic and organosilicon compounds, water, optionally blowing agents and optionally conventional additives, wherein the stabilizer mixture used comprisesa) a (meth)allyl polyoxyalkylene ether polymer or its copolymer with vinyl monomers andb) a polyoxyethylene-polysiloxane block copolymer,in a ratio by weight of a:b of 1:9 to 9:1. The polyester foam obtained are open celled to a high degree and have an excellent die-cuttability.Type: GrantFiled: July 18, 1990Date of Patent: March 3, 1992Assignee: Th. Goldschmidt AGInventors: Volker Mohring, Volker Zellmer, Georg Burkhart, Jurgen Fock, Hans-Heinrich Schlons
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Patent number: 5070112Abstract: A process for making flexible polyurethane foam, employing a silicone surfactant composition containing 5-20 wt % of a defined low molecular weight silicone surfactant and 95-80 wt % of a defined high molecular weight silicone surfactant. Use of the claimed mixture of surfactants provides product foams having improved breathability relative to foams produced using high molecular weight silicone surfactant alone.Type: GrantFiled: November 13, 1990Date of Patent: December 3, 1991Assignee: Union Carbide Chemicals and Plastics Technology CorporationInventor: Wojciech Grabowski
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Patent number: 5041468Abstract: Novel siloxane-polyether polymers are provided containing cyclic siloxanes which are useful in silicone surfactants for foam polyurethane foam applications. The novel polymers are prepared by reacting a polyhydridosiloxane polymer with a cyclic polysiloxane containing a vinyl group and with an allyl started polyoxyalkylene polymer in the presence of a platinum catalyst. The resulting polymeric products are highly potent and impart flat breathability profiles to foams when used as surfactants in their preparation.Type: GrantFiled: May 23, 1989Date of Patent: August 20, 1991Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Richard A. Budnik, Gerald J. Murphy
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Patent number: 4999383Abstract: Flame-retardant polyurethane products are produced by mixing a basic salt-forming compound with an acidic salt-forming compound containing boron compounds in a polyol and/or a polyisocyanate, then reacting the polyol and polyisocyanate.The flame-retardant polyurethane products may be used for thermal and sound insulation, as a coating agent, as an adhesive, for caulking, for cushioning and for molding useful objects.Type: GrantFiled: July 17, 1989Date of Patent: March 12, 1991Inventor: David H. Blount
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Patent number: 4892891Abstract: Foam compositions with improved physical characteristics are from urethane prepolymers in the presence of various modifying agents. Blowing agents employed in the presence of surfactants make it possible to obtain either open or closed cell structures, and the degree of foam stiffness may be desirably controlled with polyols, as well as with polymeric polymethylene polyphenylisocyanates. Suitable modifying agents include asphalts, portland cement, epichlorohydrin, other epoxidized compounds, additional polymers, and various other materials.Type: GrantFiled: December 2, 1988Date of Patent: January 9, 1990Assignee: Syn-Coat EnterprisesInventor: Donald S. Close
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Patent number: 4883832Abstract: Fluid polymer/polyol dispersions are prepared from novel polyether polyols.Type: GrantFiled: June 24, 1987Date of Patent: November 28, 1989Assignee: BP Chemicals LimitedInventors: Rudolpha C. Cloetens, Werner A. Lidy, Huy P. Thanh
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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: 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