Three Or More Reactants Containing Plural Hydroxyl Groups Patents (Class 252/182.25)
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Patent number: 12012477Abstract: The present invention relates to a hybrid polyurethane-polyhydroxyurethane (PU-PHU) composition obtained by a process comprising the following steps: (i) Reacting at least one isocyanate containing compound, in stoichiometric excess, with at least one isocyanate-reactive compound, resulting in the formation of at least one prepolymer, (ii) Reacting said at least one prepolymer with at least one cyclic carbonate functional group containing compound, leading to the formation of a cyclic carbonate-terminated prepolymer, (iii) Ring-opening reaction of said cyclic carbonate-terminated prepolymer with at least one amine functional group containing compound resulting in said hybrid PU-PHU composition, characterised in that said ring-opening reaction step is carried out above room temperature, preferably above 20° C., more preferably above 25° C.Type: GrantFiled: September 27, 2019Date of Patent: June 18, 2024Inventors: Ya-Mi Chuang, Giulio Martini, Christopher Phanopoulos
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Patent number: 10479862Abstract: This invention relates to novel macromers prepared from amine based polyols, preformed stabilizers prepared from these macromers, and to polymer polyols prepared from the preformed stabilizers. The present invention also relates to processes for preparing these compositions.Type: GrantFiled: December 7, 2017Date of Patent: November 19, 2019Assignee: Covestro LLCInventors: Rick L. Adkins, Anthony R. Loveday
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Patent number: 10259906Abstract: The present invention relates to polyester polyols obtainable or obtained by esterification of 10 to 70 mol % of at least one compound from the group consisting of terephthalic acid (TPA), dimethyl terephthalate (DMT), polyethylene terephthalate (PET), phthalic anhydride (PA), phthalic acid and isophthalic acid, 0.1 to 30 mol % of one or more fatty acids and/or fatty acid derivatives, 10 to 70 mol % of one or more aliphatic or cycloaliphatic diols having 2 to 18 carbon atoms or alkoxylates thereof, 5 to 70 mol % of a polyether polyol prepared by alkoxylating an aromatic starter molecule having a functionality of not less than 2, and of 0 to 70 mol % of a tri- or polyol other than the polyether polyol, all based on the total amount of the components used, wherein the amounts used of the components add up to 100 mol %.Type: GrantFiled: January 27, 2015Date of Patent: April 16, 2019Assignee: BASF SEInventors: Tobias Kaluschke, Gunnar Kampf
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Patent number: 9994701Abstract: Polymer polyols are made by polymerizing an ethylenically unsaturated monomer in a continuous polyol phase. The polymerization is stabilized with a macromer or a pre-formed polymer made by polymerizing or copolymerizing the macromer. The macromer is a random polymer of propylene oxide and ethylene oxide in defined ratios, which also contains polymerization carbon-carbon double or triple bond. Polymer polyols made in the process exhibit little viscosity rise when blended with water. Flexible polyurethane foam made from the polymer polyol exhibits excellent hardness, have good surface characteristics and, when pigmented, exhibit good, uniform coloration.Type: GrantFiled: September 23, 2013Date of Patent: June 12, 2018Assignee: Dow Global Technologies LLCInventors: Ricco B. Borella, Sven Claessens, Jean-Paul Masy, Stijn De Loos
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Patent number: 9868810Abstract: An isocyanate terminated prepolymer has been discovered that has sufficiently low glass transition temperature (Tg), necessary rheological properties and mechanical properties that allows for the making of adhesive compositions useful for bonding substrates into larger structures (e.g., windows in vehicles and buildings) with minimal or no plasticizers. The polyether prepolymer comprises a polyisocyanate reaction product of a polyisocyanate having an isocyanate functionality of greater than 2 and a polyether monol having an average molecular weight (Mw) of 1000 to 2000 g/moles and said prepolymer having: (i) a weight molecular weight average (Mw) of about 2000 to about 30,000 g/mole, (ii) a free isocyanate content of 0.8% to 4% by weight of said prepolymer, and (iii) viscosity of 1000 to 50,000 centipoises.Type: GrantFiled: November 24, 2014Date of Patent: January 16, 2018Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Daniel P. Sophiea, Bindu Krishnan, Laura A. Grier, Caitlin E. Young
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Patent number: 9757885Abstract: The present invention relates to a process for producing composite profiles comprising at least two metal shells which are joined by struts comprising a thermoplastic material and a core comprising rigid polyurethane foam, which comprises introduction of the starting components of the rigid polyurethane foam into a hollow space formed by the metal shells, with the rigid polyurethane foam being formed, and subsequent application of a surface coating to the outer surface of the composite profile by means of a powder coating or baking enamel, where the rigid polyurethane foam is obtained by reaction of the following components: A) at least one polyisocyanate, B) at least one polyfunctional compound which is reactive toward isocyanates, C) one or more blowing agents comprising at least formic acid, D) optionally one or more flame retardants, E) optionally one or more catalysts and F) optionally further auxiliaries or additives, wherein the starting components of the rigid polyurethane foam do not comprise anyType: GrantFiled: September 24, 2013Date of Patent: September 12, 2017Assignee: BASF SEInventors: Michael Koesters, Gianpaolo Tomasi, Lars Schoen, Ludwig Windeler
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Patent number: 9598605Abstract: A method minimizes emissions while spraying a mixture of a resin composition and a polyisocyanate onto a surface. The resin composition has a hydroxyl content of at least 400 mg KOH/g and includes a blowing agent that is a liquid under pressure, a first polyol, at least one additional polyol other than the first polyol, and optionally a catalyst, surfactant, and water. The mixture is sprayed onto the surface to form a polyurethane foam having a closed cell content of at least 90 percent. The mixture is also sprayed through a spray nozzle at a spray angle corresponding to a control spray angle of from 15 to 125 degrees measured at a pressure of from 10 to 40 psi using water as a standard. The step of spraying produces less than 50 parts of the polyisocyanate per one billion parts of air according to OSHA Method 47.Type: GrantFiled: August 1, 2014Date of Patent: March 21, 2017Assignee: BASF SEInventor: Joseph Ogonowski
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Publication number: 20150076400Abstract: This invention relates to novel polyol blends, a process for the production of foam with very low resistance to air flow from certain polyol blends and to the resultant foams produced from certain polyol blends. The polyol blends comprise one or more monofunctional polyethers having a hydroxyl number of less than 28; one or more polyether polyols having a hydroxyl number of 20 to 240 and containing at least 50% of copolymerized oxyethylene; one or more polyether polyols having a hydroxyl number of 47 to 300 and containing from 5 to 40% of copolymerized oxyethylene; and optionally, one or more polyether polyols having a hydroxyl number of 10 to 45. This process of the invention comprises reacting one or more polyisocyanates, with an isocyanate-reactive component in the presence of at least one catalyst, at least one surfactant and at least one blowing agent.Type: ApplicationFiled: November 20, 2014Publication date: March 19, 2015Inventors: Stanley L. Hager, Bruce Britt, Susan McVey, Micah Moore, Peter Uthe, Jack Reese
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Patent number: 8728345Abstract: The present invention relates to stable, zero or low VOC epoxy-containing polysiloxane oligomer compositions that provide for a high degree of chemical resistance to compositions containing organic resins, while at the same time, maintaining or improving the flexibility of these organic resin-containing compositions, to processes for preparing epoxy-containing polysiloxane oligomer compositions, and to uses in coatings, sealants, adhesives, and composites containing the same.Type: GrantFiled: December 19, 2011Date of Patent: May 20, 2014Assignee: Momentive Performance Materials Inc.Inventors: Narayana Padmanabha Iyer, Lesley Hwang, Vikram Kumar, Christian Geismann, Constantine Kondos, Shiu-Chin Su
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Publication number: 20130310474Abstract: A polyurethane foam is prepared by combining a polyether triol with a hydroxyl value of from 25 to 30 and a molecular weight from 5000 to 7000 g/mol; a polyether diol with a hydroxyl value of from 25 to 30 and a molecular weight from 3000 to less than 5000 g/mol; a chain extender mixture including 1,4-butanediol and at least one of monoethylene glycol, hexanediol, neopentyl glycol, and isomers thereof; a copolymer polyether polyol having a styrene acrylonitrile solids content of at least 38 wt % and an average hydroxyl number of at least 23; an isocyanate component; and a blowing agent. It is particularly suitable for shoe sole applications, where it exhibits improvement in slip resistance under wet conditions when compared with some other polyether-polyurethane formulations.Type: ApplicationFiled: January 23, 2012Publication date: November 21, 2013Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Silvia Scussolin, Andrea Benvenuti
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Publication number: 20130248759Abstract: A bioresin composition is used to form a rigid polyurethane article that includes a first and a second biopolyol and is substantially free of aprotic solvents that chemically decompose in the presence of water. The first biopolyol includes a natural oil component. The second biopolyol includes the reaction product of a natural carbohydrate and an alkylene oxide. The rigid polyurethane foam article includes the reaction product of the bioresin composition and an isocyanate which are reacted in the presence of a chemical blowing agent.Type: ApplicationFiled: May 21, 2013Publication date: September 26, 2013Inventors: Christopher M. Tanguay, Patrick J. Watters, John P. Erickson, Eric W. Banks
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Patent number: 8323525Abstract: A resin containing a liquid pigment dispersion is disclosed. The dispersion comprises a pigment dispersed in a blend of two or more active hydrogen-containing materials that together have a freezing point that is room temperature or below. The pigment remains dispersed in the blend, even if the dispersion is subjected to freezing and thawing. A curative blend comprising at least two active hydrogen-containing materials, which is liquid at room temperature, is also disclosed. The dispersions and curative blends of the present invention can be solvent-free. Resins and prepolymers comprising the curative blends of the invention, either pigmented or unpigmented, are also disclosed.Type: GrantFiled: December 21, 2011Date of Patent: December 4, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Kelly J. Gasper, Constantine A. Kondos
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Patent number: 8318823Abstract: The invention relates to a polyether polyol composition for the preparation of polyurethane foams, comprising: (a) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 65 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 40 to 80%, based on the total number of primary and secondary hydroxyl groups, having a PO content of from 45 to 55% by weight and an EO content of from 40 to 55% by weight; (b) a dispersion of a polymer in a polyether polyol, wherein the OH number of the dispersion is within a range of from 10 to 30 mg of KOH/g and the polyether polyol has a hydroxyl functionality of 3, a proportion of primary hydroxyl groups within a range of from 70 to 90%, based on the total number of primary and secondary hydroxyl groups, a PO content of from 70 to 90% by weight and an EO content of from 10 to 30% by weight; (c) a polyether polyol having a hydroxyl functionality of 3, an OH number within a range of from 220 to 290 mg of KOH/g aType: GrantFiled: December 9, 2008Date of Patent: November 27, 2012Assignee: Bayer MaterialScience AGInventors: Sebastien Triouleyre, Sven Meyer-Ahrens, Alice Mosbach-Rosenberger
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Patent number: 8242228Abstract: The present invention is a low haze thermoplastic polyurethane (TPU) prepared from a chain extender mixture that includes an acyclic diol and a mixture of 1,3- and 1,4-cyclohexanedimethanol. The TPU elastomers exhibit good optical clarity, particularly when formed into relatively thick injection molded parts.Type: GrantFiled: December 3, 2007Date of Patent: August 14, 2012Inventors: John M. Cox, Francisco Lerma, Mark F. Sonnenschein
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Publication number: 20120172470Abstract: Polyether polyols are initiated 1,3- and/or 1,4-bis(aminomethyl)cyclohexane) and with either or both of a methylene bis(cyclohexylamine) compound and a cyclohexanediamine compound. The polyols are useful in making rigid polyurethane foams, especially foams for pour-in-place applications, where they give a good combination of low k-factor and short demold times.Type: ApplicationFiled: September 21, 2010Publication date: July 5, 2012Inventors: Timothy A. Morley, Francois M. Casati, Adrian J. Birch, Phillip S. Athey, Hans Kramer
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Patent number: 8183302Abstract: The present invention relates to polyether polyol compositions containing renewable raw materials, a process for preparing visco-elastic polyurethane foams using such compositions, correspondingly prepared visco-elastic foam materials, and the use thereof.Type: GrantFiled: February 23, 2009Date of Patent: May 22, 2012Assignee: Bayer MaterialScience AGInventors: Bert Klesczewski, Sebastien Triouleyre, Matthäus Gossner, Sven Meyer-Ahrens, Alice Mosbach-Rosenberger
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Publication number: 20120028024Abstract: The present invention discloses a structure comprising a plurality of three dimensional cells, wherein each cell comprises exterior walls defining an interior void wherein the walls comprise a plurality of struts and windows, the struts forming borders for the plurality of windows, wherein the struts have a plurality of pores. The present invention further discloses a viscoelastic foam having a ratio of elastic modulus (E?) at 20° C. to 25% compression force deflection (CFD) of 25 to 125.Type: ApplicationFiled: July 15, 2009Publication date: February 2, 2012Applicant: Dow Global Technologies inc.Inventors: Bernard Obi, Alan K. Schrock, Rogelio R. Gamboa, Asjad Shafi, Kaoru Aou
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Patent number: 8097183Abstract: A liquid pigment dispersion is disclosed. The dispersion comprises a pigment dispersed in a blend of two or more active hydrogen-containing materials that together have a freezing point that is room temperature or below. The pigment remains dispersed in the blend, even if the dispersion is subjected to freezing and thawing. A curative blend comprising at least two active hydrogen-containing materials, which is liquid at room temperature, is also disclosed. The dispersions and curative blends of the present invention can be solvent-free. Resins and prepolymers comprising the curative blends of the invention, either pigmented or unpigmented, are also disclosed.Type: GrantFiled: March 1, 2010Date of Patent: January 17, 2012Assignee: PPG Industries Ohio, IncInventors: Kelly J. Gasper, Constantine A. Kondos
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Patent number: 7947756Abstract: Process for making a slabstock, visco-elastic, flexible, polyurethane foam which process comprises reacting a polyisocyanate and a polyol at an index of 60-95 and using a blowing agent, wherein 5-50 and preferably 10-40% by weight of the polyol used is castor oil. The foams and a polyol composition are claimed as well.Type: GrantFiled: June 12, 2007Date of Patent: May 24, 2011Assignee: Huntsman International LLCInventors: Kris Andries, Johan Antoine Stefaan Macken
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Patent number: 7828991Abstract: This invention relates to novel polyether polyols which are prepared by alkoxylation of renewable resource materials, and particularly cashew nutshell liquid (CNSL), and to a process for the preparation of these novel polyether polyols. This invention also relates to flexible polyurethane foams prepared from these long chain polyether polyols, and to a process for the production of these flexible polyurethane foams.Type: GrantFiled: December 8, 2006Date of Patent: November 9, 2010Assignee: Bayer MaterialScience LLCInventors: Jack R. Reese, Micah N. Moore, Don S. Wardius, Stanley L. Hager
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Patent number: 7393465Abstract: A process for preparing hydrophobic polyols that includes reacting A) a mixture having an OH content of from 180 to 300 mg KOH/g, a viscosity at 23° C. of from 5000 to 20 000 mPas and an OH functionality of from 2.8 to 4.5 including from 5 to 20 wt. % of 3-pentadecadienylphenol, from 5 to 10 wt. % of 3-pentadecadienyl-recorcinol and from 1 to 5 wt. % of 2-methyl 3-pentadecadienylrecorcinol; with B) alkylene oxides (AO) with addition of the AO monomers onto the AO-reactive groups of component A); the ratio of the amounts of A) to B) being from 1:9 to 9:1; where the hydrophobic polyols have an OH number of from 140 to 220 mg KOH/g and a viscosity at 23° C. of from 1000 to 4000 mPas. The hydrophobic polyols can be used in polyurethane systems, in coatings, adhesive bonds, sealants or moulding compounds, which can be used to coat substrates.Type: GrantFiled: February 24, 2005Date of Patent: July 1, 2008Assignee: Bayer MaterialScience AGInventors: Meike Niesten, Jack Reese, Joachim Simon, Gerhard Ruttmann
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Patent number: 7094357Abstract: A compatibilizing agent is described for a mixture of (1) a polyester polyol containing units derived from at least one aliphatic dicarboxylic acid (A) having n carbon atoms (10?n?20) and at least one aliphatic diol having k carbon atoms (2?k?12) and (2) a polyester polyol containing units derived from at least one aliphatic dicarboxylic acid (B) having m carbon atoms (2?m?9) and at least one aliphatic diol having k carbon atoms (2?k?12), the compatibilizing agent containing a polyester polyol which contains units derived from at least one aliphatic dicarboxylic acid (A) having n carbon atoms (10?n?20), at least one aliphatic dicarboxylic acid (B) having m carbon atoms (2?m?9), and at least one aliphatic diol having k carbon atoms (2?k?12) and in which the ratio of ingredient (A) to ingredient (B) used is from 90:10 to 10:90 in terms of molar ratio (provided that n-m?4).Type: GrantFiled: December 16, 2002Date of Patent: August 22, 2006Assignee: UBE Industries, Ltd.Inventors: Hideki Ichihashi, Yukio Kaneko
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Patent number: 6946497Abstract: Process for preparing a visco-elastic polyurethane foam by reacting a polyisocyanate composition with a polyol composition comprising b1) an EO-rich polyol; b2) a polyol with an EO content between 20-50% and a primary hydroxy content of at least 50%; b3) a polyol with an EO content between 10-20% and a primary hydroxy content of at least 50%; and b4) a polyoxyalkyleneglycol. Further provided is a polyol composition.Type: GrantFiled: October 27, 2003Date of Patent: September 20, 2005Assignee: Huntsman International LLCInventor: Jianming Yu
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Patent number: 6861495Abstract: This invention relates to rapid drying lacquers that are particularly useful for automotive OEM refinish applications. The lacquer includes a novel highly branched copolyester polyol. This invention is also directed to a process for producing coatings from the rapid drying lacquers. These lacquers are especially useful in providing for chip and humidity resistant coatings having improved adhesion.Type: GrantFiled: February 19, 2003Date of Patent: March 1, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert John Barsotti, Carl Brent Douglas, Renee Jeanne Kelly, Lech Wilczek
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Patent number: 6830705Abstract: The invention relates to liquid stable MDI prepolymers and curative systems which are suitable for room temperature casting and which yield high performance low-shrinkage urethane elastomers upon room-temperature curing, the prepolymer and curative components, the elastomers themselves, and separately packaged prepolymer component and its complementary curative component provided as a single unit or kit.Type: GrantFiled: June 14, 2000Date of Patent: December 14, 2004Assignee: AZON USA Inc.Inventors: Gerard Scott Freeland, James E. Doyle
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Polyurethane elastomers having improved physical properties and a process for the production thereof
Patent number: 6824703Abstract: A polyol composition having a number average molecular weight of from about 1,000 to about 3,000 Daltons is made up of (1) at least 60% by weight of a low monol polyoxypropylene polyol having a number average molecular weight of from about 2,000 to 12,000 Da and a degree of unsaturation less than or equal to 0.02 meq/g and (2) no more than 40% by weight of a polyol having a number average molecular weight of from about 400 to about 1,000 Da and a polydispersity index greater than 1.1. This polyol composition is reacted with a diisocyanate, a polyisocyanate, an isocyanate-terminated prepolymer or an isocyanate-terminated quasi-prepolymer to produce polyurethane elastomers having good physical and mechanical properties. Any of the known processes for producing polyurethane elastomers, including one-shot processes, may be used to produce elastomers in accordance with the present invention.Type: GrantFiled: March 8, 2002Date of Patent: November 30, 2004Assignee: Bayer MaterialScience LLCInventors: Bruce D. Lawrey, Kurt C. Frisch, Nigel Barksby -
Patent number: 6716729Abstract: There is provided a stable single-phase composition of bisphenolic stillbottoms and methods for making such compositions. There is also provided a resole and a novolac composition that includes in the manufacture of the resins the use of a stable solution of bisphenolic stillbottoms. Methods for making the resins are also provided. There is further provided a low molecular weight phenolic resin useful in the manufacture of paper laminates, such that the resin exhibits improved paper saturation and reduced phenol emissions during treating when compared to the prior art. There is also provided a laminate composition that results in a paper laminate that exhibits improved flexibility when compared to the prior art.Type: GrantFiled: March 4, 2002Date of Patent: April 6, 2004Assignee: Borden Chemical, Inc.Inventors: Stephen Wayne Arbuckle, Vinay Malhotra, John George Juras, Jr.
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Patent number: 6602450Abstract: A method of producing a heat insulating board comprising two opposed facings and a core made of a rigid synthetic resin foam, which comprises spraying or injecting a foam mix for the rigid synthetic resin foam into the space between the opposed face materials and expanding and curing the foam mix, wherein the foam mix comprises a particular polyol, a polyisocyanate, a foam stabilizer, a catalyst and a blowing agent, wherein the polyol contains a polyether polyol having a hydroxyl value of at most 84 mgKOH/g and an oxyethylene group content of at least 40 wt %; a polyether polyol which is obtained by adding a cyclic ether to an amine compound and has a hydroxyl value of from 250 to 900 mgKOH/g; and fine polymer particles stably dispersed in the polyol.Type: GrantFiled: November 6, 2000Date of Patent: August 5, 2003Assignee: Asahi Glass Company, LimitedInventors: Hisashi Sato, Hiromitsu Takeyasu, Chitoshi Suzuki
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Patent number: 6590008Abstract: The invention relates to a polyol composition comprising by weight 60-97% of b1) a polyoxyethylene-polyoxypropylene polyol, having a functionality of 2-6, with 10-25% tipped EO, 3-40% of b2) a polyoxyethylene-polyoxypropylene polyol, having a functionality of 2-6, with 20-50% total EO and 10-20% tipped EO; and 0-25% of b3) a polyol, having a functionality of 2-6, with at least 50% random EO. The invention also relates to a process for preparing a flexible polyurethane foam by reacting a) a polyisocyanate composition; b) a polyol composition of the invention; c) water; and d) additives and auxiliaries known per se. The invention finally relates to a reaction system comprising A) a polyisocyanate and B) an isocyanate-reactive component comprising the polyol of the invention.Type: GrantFiled: March 1, 2002Date of Patent: July 8, 2003Assignee: Huntsman International LLCInventors: Alain Parfondry, Jianming Yu
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Publication number: 20030094594Abstract: There is provided a stable single-phase composition of bisphenolic stillbottoms and methods for making such compositions. There is also provided a resole and a novolac composition that includes in the manufacture of the resins the use of a stable solution of bisphenolic stillbottoms. Methods for making the resins are also provided. There is further provided a low molecular weight phenolic resin useful in the manufacture of paper laminates, such that the resin exhibits improved paper saturation and reduced phenol emissions during treating when compared to the prior art. There is also provided a laminate composition that results in a paper laminate that exhibits improved flexibility when compared to the prior art.Type: ApplicationFiled: March 4, 2002Publication date: May 22, 2003Inventors: Stephen Wayne Arbuckle, Vinay Malhotra, John George Juras
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Patent number: 6506813Abstract: The invention relates to a polyol composition comprising b1) a polyol where the EO content is at least 50%; b2) a polyol having a primary hydroxyl content of at least 50%; b3) an amine-initiated polyoxypropylene polyol having an OH value greater than 400, according to the following proportions: b1: 20-70 wt %, b2: 5-50 wt %, b3: 5-50 wt %. The invention also relates to a process for preparing a cold-setting flexible polyurethane foam at NCO index of 70-120 by reacting a) a polyisocyanate; the polyols b1), b2) and b3); c) water; and d) additives and auxiliaries known per se. The invention finally relates to a reaction system comprising A) a polyisocyanate and B) an isocyanate-reactive component comprising the polyols b1), b2) and b3).Type: GrantFiled: January 10, 2002Date of Patent: January 14, 2003Assignee: Huntsman International, LLCInventors: Alain Parfondry, Jianming Yu
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Publication number: 20020169228Abstract: The present invention discloses a phase stable polyol blend composition containing a sucrose and dipropylene glycol co-initiated propylene oxide polyether polyol, a polyester polyol, a compatibilizing agent and a hydrocarbon blowing agent. The polyester polyol is preferably a phthalic anhydride-initiated polyester polyol. The compatibilizing agent is a butanol-initiated propylene oxide polyether surfactant.Type: ApplicationFiled: March 9, 2001Publication date: November 14, 2002Inventors: Robert E. Riley, Walter R. White, Jim Patterson
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Patent number: 6472446Abstract: The present invention discloses a phase stable polyol blend composition containing a sucrose and dipropylene glycol co-initiated propylene oxide polyether polyol, a polyester polyol, a compatibilizing agent and a hydrocarbon blowing agent. The polyester polyol is preferably a phthalic anhydride-initiated polyester polyol. The compatibilizing agent is a butanol-initiated propylene oxide polyether surfactant.Type: GrantFiled: March 9, 2001Date of Patent: October 29, 2002Assignee: BASF CorporationInventors: Robert E. Riley, Walter R. White, III, Jim Patterson
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Patent number: 6423759Abstract: A co-initiated polyether polyol is produced by suspending a solid polyhydroxyl compound in an amine-initiated polyol, heating the suspension and alkoxylating the heated suspension. These co-initiated polyether polyols are particularly useful for the production of polyurethanes.Type: GrantFiled: December 20, 2000Date of Patent: July 23, 2002Assignee: Bayer CorporationInventors: Steven L. Schilling, Herman P. Doerge, Edward E. Ball, Keith J. Headley
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Patent number: 6348161Abstract: The present invention discloses a polyol resin composition containing a polyether polyol blend, a polyester polyol, and a hydrocarbon blowing agent. The polyether polyol blend has at least a diamine initiated polyol, a propylene oxide polyol, and a polyethylene terephthalate initiated polyol having a functionality of from 2.3 to 3.0. The polyester polyol is preferably a phthalic anhydride initiated polyester polyol. The blowing agent is a C4-C6 hydrocarbon. Also disclosed is a method of producing a polyurethane foam combining the above mentioned polyol resin and an isocyanate component.Type: GrantFiled: August 3, 2000Date of Patent: February 19, 2002Assignee: BASF CorporationInventors: Walter R. White, III, Robert E. Riley, Jimmy L. Patterson, James A. Mullins