Patents Represented by Attorney Nicole Graham
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Patent number: 7790778Abstract: Isocyanate-terminated prepolymer having an NCO-value of 5-30% by weight and being the reaction product of an excessive amount of diphenylmethane diisocyanate comprising at least 80% by weight of 4,4?-diphenylmethane diisocyanate and a polyoxyethylene-polyoxypropylene polyol having an average molecular weight of 2000-10000, an average nominal hydroxy functionality of 2-6, an oxyethylene content of 21-45% by weight and a structure of the type -PO-PO/EO-EO wherein the PO block comprises 60-90% of the PO and the ratio of tipped EO:random is 3:1 to 1:3, and a process for preparing a flexible foam by reacting in a mould and at an index of 70-120, the above prepolymer or a composition comprising this prepolymer and b1) a polyoxyethylene-polyoxypropylene polyol, having an average nominal hydroxy functionality of 2-6, and a oxyethylene (EO) content of more than 50% by weight; and optionally b2) a polyoxyethylene-polyoxypropylene polyol, having an average nominal hydroxy functionality of 2-6, an EO content of betweenType: GrantFiled: January 31, 2005Date of Patent: September 7, 2010Assignee: Huntsman International LLCInventors: Koon Yeow Chan, Eric Huygens, Herman Eugene Germain Moureau, Anja Vanhalle, Jianming Yu
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Patent number: 7056976Abstract: Polyisocyanate-based reaction systems, a pultrusion process of those systems to produce reinforced matrix composites, and to composites produced thereby. The polyisocyanate-based systems are mixing activated reaction systems that include a polyol composition, an optional chain extender or crosslinker, and a polyisocyanate. The polyisocyanate-based systems exhibit improved processing characteristics in the manufacture of fiber reinforced thermoset composites via reactive pultrusion.Type: GrantFiled: July 25, 2003Date of Patent: June 6, 2006Assignee: Huntsman International LLCInventors: Ravi R. Joshi, Evan H. Cheolas
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Patent number: 7029612Abstract: Novel release agents comprising a carboxylic acid comprising at least six carbon atoms and at least one free carboxylic acid group and a polysiloxane comprising at least one organically bound active hydrogen group, which release agents are particularly suited for use in forming lignocellulosic composites prepared using an isocyanate adhesive. Processes for the use of such release agents in the synthesis of lignocellulosic composites prepared using isocyanate adhesives.Type: GrantFiled: January 16, 2004Date of Patent: April 18, 2006Assignee: Huntsman International LLCInventor: Christopher J. Moriarty
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Patent number: 7022871Abstract: Process for the synthesis of polyurethane derivatives from aromatic polyamine compounds. The method involves the reaction of an aromatic polyamine compound with CO and O2 in the presence of a catalyst comprising a Group VIII or lanthanide metal on a solid support and a halogenide promoter.Type: GrantFiled: June 26, 2002Date of Patent: April 4, 2006Assignee: Huntsman International LLCInventors: Raghunath Vitthal Chaudhari, Ashutosh Anant Kelkar, Sunil Purushottam Gupte, Sunil Sadashiv Divekar, Subramanian Ganapathy
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Patent number: 7022746Abstract: Viscoelastic foams and elastomers based on a reaction system comprising a monomeric polyisocyanate composition, a specified mixture of polyols, and a specified package of additives. The viscoelastic materials offer superior combinations of physical properties, including surprisingly low compression sets. Very soft viscoelastic foams and microcellular elastomers can be conveniently prepared from the reaction system without the necessity of using plasticizers. The reaction system can be processed into useful polymeric articles using a wide range of conventional polyurethane processing methods.Type: GrantFiled: May 27, 2004Date of Patent: April 4, 2006Assignee: Huntsman International LLCInventors: Robert J. Lockwood, Verlin D. Poole
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Patent number: 7012043Abstract: Drilling fluid additives that act to control clay swelling in drilled formations without adversely effecting the properties of the drilling fluid. The drilling fluid additives preferably comprise a polyether amine, a polyether amine derivative, or mixtures thereof. Drilling fluids that comprise such drilling fluid additives and a method of reducing clay swelling in drilled formations are also disclosed.Type: GrantFiled: November 7, 2002Date of Patent: March 14, 2006Assignee: Huntsman Petrochemical CorporationInventors: Howard P. Klein, Chris E. Godinich
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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: 6919384Abstract: Process for preparing flexible polyurethane foam by reacting an MDI-based polyisocyanate terminated prepolymer and a polyether polyol with a high oxyethylene content and foams produced by such process.Type: GrantFiled: August 21, 2003Date of Patent: July 19, 2005Assignee: Huntsman International LLCInventor: Jianming Yu
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Patent number: 6914117Abstract: Process for preparing an elastomeric polyurethane material by reacting a polyisocyanate, a polyol and a monool.Type: GrantFiled: November 18, 2003Date of Patent: July 5, 2005Assignee: Huntsman International LLCInventors: Gerhard Jozef Bleys, Danny Anna Edward Geukens, Hans Godelieve Guido Verbeke
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Patent number: 6908979Abstract: Polyurethane gels, a reaction system for preparing the gels, and a process for producing polyurethane gels. The reaction system comprises a polyisocyanate composition and an isocyanate-reactive composition comprising a relatively high molecular weight mono-ol and a relatively low molecular weight polyol having a nominal isocyanate-reactive functionality of at least 3. The gels do not require the use of plasticizers. The reaction system and process offer a surprising combination of long working time and rapid cure.Type: GrantFiled: November 18, 2003Date of Patent: June 21, 2005Assignee: Huntsman International LLCInventor: Christopher A. Arendoski
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Patent number: 6906209Abstract: A process for purifying propylene oxide containing an unacceptable quantity of a poly (propylene oxide) polymer contaminant having a number average molecular weight of at least 50,000 and precursors having a number average molecular weight below 50,000. The process comprises contacting the propylene oxide with a sorbent selected from activated carbon, charcoal, and attapulgite for a time and under conditions sufficient to reduce the amount of the contaminant to acceptable levels, and thereafter recovering the purified propylene oxide product, wherein the propylene oxide is contacted with the sorbent at a temperature below 10° C.Type: GrantFiled: August 12, 2003Date of Patent: June 14, 2005Assignee: Huntsman International LLCInventor: John R. Sanderson
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Patent number: 6887911Abstract: Foamed molded articles produced by reaction injection molding (RIM) are provided. The molded articles are formed by reaction of a polyisocyanate component with an isocyanate reactive component in a mold using a blowing agent. The molded articles are preferably composites formed in the presence of a fibrous reinforcing material. The foamed articles are characterized by relatively short minimum mold residence times, and can thereby be produced more economically than prior art composites. The foamed articles are further characterized by a reduction in physical defects, such as splits and voids.Type: GrantFiled: June 11, 2003Date of Patent: May 3, 2005Assignee: Huntsman International LLCInventors: Trent A. Shidaker, David W. Bareis, Herbert R. Gillis
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Patent number: 6884824Abstract: Process for preparing a polyurethane elastomer having an apparent overall density of more than 150 kg/m3 comprising reacting a polyisocyanate and an isocyanate-reactive composition, optionally in the presence of water, wherein the reaction is conducted at an isocyanate index of 85 to 120, the polyisocyanate comprising: a) 80-100% by weight of a diphenylmethane diisocyanate comprising at least 40% by weight of 4,4?-diphenylmethane diisocyanate and/or a derivative of said diphenylmethane diisocyanate which derivative is liquid at 25° C.Type: GrantFiled: January 3, 2003Date of Patent: April 26, 2005Assignee: Huntsman International LLCInventors: Gerhard Jozef Bleys, Eric Huygens
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Patent number: 6884825Abstract: Process for preparing a flexible polyurethane foam comprising reacting at an isocyanate index of 70 to 130, 1) 40-65 parts by weight of a polyisocyanate composition comprising a) 80-100% by weight of a diphenylmethane diisocyanate component comprising, based on 100 parts by weight of the diphenylmethane diisocyanate component, i) 75-100 parts by weight of diphenylmethane diisocyanate comprising 15-75 parts by weight of 4,4?-diphenylmethane diisocyanate, and 25 to 85 parts by weight of 2,4?-diphenylmethane diisocyanate, and 2,2?-diphenylmethane diisocyanate and/or a liquid variant of such diphenylmethane diisocyanate, and ii) 0 to 25 parts by weight of homologues of diphenylmethane diisocyanates having an isocyanate functionality of 3 or more; and b) 20-0% by weight of toluene diisocyanate; 2) 20 to 45 parts by weight of a polyether polyol having an average molecular weight of 4500-10000, an average nominal functionality of 2-6 and comprising oxypropylene and optionally oxyethylene groups, the amount of oxyproType: GrantFiled: January 3, 2003Date of Patent: April 26, 2005Assignee: Huntsman International LLCInventors: William Andrew Daunch, Jan-Willem Leenslag, Hans Godelieve Guido Verbeke
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Patent number: 6878795Abstract: Cold curing polyisocyanate adhesive compositions suitable for use in the preparation of engineered lumber composites. Additionally provided are catalysts comprising tertiary amine alkoxylates that are reduced in or substantially free of isocyanate-reactive hydroxylic or amine hydrogen atoms. Further provided is a process for preparing composites articles using the adhesive compositions and composite articles prepared from the adhesive compositions. Composite articles prepared from the adhesive compositions have a substantially increased resistance to delamination.Type: GrantFiled: July 25, 2003Date of Patent: April 12, 2005Assignee: Huntsman International LLCInventors: Joseph J. Marcinko, Anthony A. Parker, Herbert R. Gillis
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Patent number: 6821476Abstract: Manufacture of molded polyurethane or molded polyurethane containing products, especially thermoplastic products, such as elastomers, flexible foam, and rigid foam using gas assisted injection molding. Preferred polyurethane products are thermoplastic polyurethanes.Type: GrantFiled: June 24, 2002Date of Patent: November 23, 2004Assignee: Huntsman International LLCInventors: Alan Nigel McClelland, Ajay Devidas Padsalgikar
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Patent number: 6806342Abstract: Process for preparing a polyurethane material having no glass transition temperature below 25 C, which process involves using a polyoxyethylene polyoxypropylene polyol having a high oxyethylene content and a polyisocyanate having a high 4,4′-diphenylmethane diisocyanate (4,4′-MDI) content, wherein the reaction is conducted at an isocyanate index of 80 to 140.Type: GrantFiled: January 30, 2003Date of Patent: October 19, 2004Assignee: Huntsman International LLCInventors: Gerhard Jozef Bleys, Eric Huygens, Anja Vanhalle
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Patent number: 6797798Abstract: Spray polyurea elastomers and reaction systems and methods for making the same. The spray polyurea elastomers are prepared with a prepolymer formed by reacting a low 2,4′-isomer content MDI with an MDI reactive component. This prepolymer is blended with a high 2,4′-isomer content MDI to form a quasi-prepolymer. The quasi-prepolymer is reacted with an amine resin to form polyurea elastomers.Type: GrantFiled: March 27, 2003Date of Patent: September 28, 2004Assignee: Huntsman International LLCInventor: Jay A. Johnston
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Patent number: 6793855Abstract: The invention relates to polyisocyanurate systems, pultrusion of those systems to produce reinforced polyisocyanurate matrix composites, and to composites produced thereby. The polyisocyanurate systems include a polyol component, an optional chain extender, and an isocyanate. The polyisocyanurate systems have extended initiation times of about 5 minutes to about 30 minutes at room temperature, and can be snap cured.Type: GrantFiled: May 16, 2001Date of Patent: September 21, 2004Assignee: Huntsman International LLCInventors: Evan H. Cheolas, Berend Eling, Ravi R Joshi
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Patent number: 6784217Abstract: A prepolymer process for preparing a high resilience flexible polyurethane foam by reacting a polyisocyanate composition comprising at least 80% by weight of 4,4′-MDI and having an NCO value below 20% 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%; and b3) a polyol with an EO content between 10-20% and a primary hydroxy content of at least 50%; according to the following proportions: b1: 40-90 wt %, b2: 5-60 wt %, b3: 0-20 wt %. The invention also relates to reaction systems comprising the above components.Type: GrantFiled: June 11, 2003Date of Patent: August 31, 2004Assignee: Huntsman International LLCInventors: Alain Parfondry, Jianming Yu