Ingredient Contains A Carbon Atom Double Bonded To Oxygen, E.g., Carboxylic Acid, Etc. Patents (Class 521/130)
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Patent number: 6653359Abstract: Silicone surfactants for use in inert gas blown polyurethane foams comprise low to moderate molecular weight comb-type flame-retardant silicone copolymers possessing no high ethylene oxide content branches. The silicone surfactants yield Dissolved Gas Technology foams having improved consistency as compared to other surfactant compositions.Type: GrantFiled: April 26, 2002Date of Patent: November 25, 2003Inventors: Brian L. Hilker, Lee F. Lawler, Susan B. McVey
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Patent number: 6642283Abstract: Polyurethane article black colorants which comprise a novel blue polymeric anthraquinone colorant, rather than the previous standard polymeric triphenylmethane blue-type colorants are provided. Such a novel blend of colorants to produce black colorations within the target polyurethane foams exhibits very low color degradation within polyurethane foams, primarily due to the stability and resiliency of the novel anthraquinone-based polymeric colorant in the presence of high isocyanate levels, as well as large amounts of reactive tertiary amines (from catalyst residue, for example). A black colorant comprising such a novel blue polymeric colorant, as well as polyurethane foams comprising such a novel black coloring agent and methods of producing such foams are all contemplated within this invention.Type: GrantFiled: October 26, 2001Date of Patent: November 4, 2003Assignee: Milliken & CompanyInventors: Mark E. Ragsdale, Sandy G. Belue
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Patent number: 6638989Abstract: Rigid foams having excellent compression strength, dimensional stability, flame retardance and adhesion are produced by reacting an active hydrogen compound having at least two functionalities with a polyisocyanate compound in the presence of a catalyst and a blowing agent comprising either water alone or a mixture of water and a low boiling compound, wherein (1) the polyisocyanate compound is a prepolymer obtained by reacting a polymeric MDI with 5 to 30% by weight, based on the polymeric MDI, of a polyether polyol and/or polyester polyol having a hydroxyl value of at most 100 mg KOH/g, and (2) the number of isocyanate groups in the polyisocyanate compound is at least 1.5 times by mole as large as the number of active hydrogen atoms in the active hydrogen compound and water.Type: GrantFiled: November 16, 2001Date of Patent: October 28, 2003Assignee: Bayer AktiengesellschaftInventors: Yoshiyuki Dohmoto, Masayuki Fujidai
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Patent number: 6638986Abstract: Reticulated flexible polyurethane foams are prepared by reacting organic and/or modified organic polyisocyanates (a) with a polyetherol mixture (b) and, if required, further compounds (c) having hydrogen atoms reactive toward isocyanates, in the presence of water and/or other blowing agents (d), catalysts (e) and further assistants and additives (f), by a process in which the polyetherol mixture (b) comprises b1) at least one difunctional or polyfunctional polyetherol having an OH number of from 20 to 150 mg KOH/g, based on propylene oxide and/or butylene oxide and ethylene oxide and having an ethylene oxide content of more than 40% by weight, based on the total amount of alkylene oxide used, (b1.Type: GrantFiled: January 15, 2002Date of Patent: October 28, 2003Assignee: BASF AktiengesellschaftInventors: Peter Falke, Heinz-Dieter Lutter, Michael J. Pcolinski
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Patent number: 6638987Abstract: This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.Type: GrantFiled: June 10, 2002Date of Patent: October 28, 2003Assignee: Honeywell International, Inc.Inventors: Mary C. Bogdan, Gary M. Knopeck, Hang T. Pham, Rajiv R. Singh, David Dressel, David J. Williams
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Patent number: 6638990Abstract: 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: GrantFiled: January 25, 2002Date of Patent: October 28, 2003Assignee: Bayer AktiengesellschaftInventors: Peter Haas, Matthäus Gossner, Klaus-Peter Herzog
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Patent number: 6635685Abstract: A process for producing a rigid polyurethane foam provides a rigid polyurethane foam having a closed-cell size of about 80-130 &mgr;m and thus, improved heat insulating properties.Type: GrantFiled: December 20, 2001Date of Patent: October 21, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Sang Jo Suk, Bong Ku Kim, Sang Bu Jeon, Cheol Min Hur
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Publication number: 20030195268Abstract: A low-temperature foam compositions and that are produced from an epoxy compound and an acid source can be substantially free of polyurethane or isocyanate chemistry. The disclosed compositions and precursors thereof reduce, if not eliminate, the presence of conventional undesirable compounds and by-products thereof.Type: ApplicationFiled: October 10, 2002Publication date: October 16, 2003Inventors: James W. Freitag, Donald W. Taylor, Jess Rogers, Jeffrey T. Pachl
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Patent number: 6632851Abstract: 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: GrantFiled: December 7, 2000Date of Patent: October 14, 2003Assignee: Bayer AktiengesellschaftInventors: Peter Haas, Matthäus Gossner, Klaus-Peter Herzog
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Patent number: 6627671Abstract: Urethane molded products for polishing pad comprise two types of cells having different sizes in urethane molded products formed by mixing and curing an isocyanate-terminated urethane prepolymer and an active hydrogen-containing compound. The molded products may be made by a procedure comprising mixing expanded microballoons or non-expanded, thermally expandable microspheres and water with the isocyanate-terminated urethane prepolymer and active hydrogen-containing compound and curing the mixture.Type: GrantFiled: August 27, 1999Date of Patent: September 30, 2003Assignee: Fuji Spinning Co., Ltd.Inventors: Katushi Kihara, Yoshimi Mochizuki
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Patent number: 6617369Abstract: The invention relates to a one-shot or prepolymer 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 polyalkyleneglycol; according to the following proportions: b1: 30-85 wt %, b2: 5-65 wt %, b3: 5-40 wt %, b4: 0-50 wt %. The invention also relates to reaction systems comprising the above components and to the polyol composition.Type: GrantFiled: April 12, 2002Date of Patent: September 9, 2003Assignee: Huntsman International LLCInventors: Alain Parfondry, Jianming Yu
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Patent number: 6608160Abstract: A composition for production of cover packing, comprising: (A) a blocked isocyanate, (B) an active hydrogen group-containing compound having average two or more functional groups, (C) an organic substance powder having an average particle diameter of 40 to 250 &mgr;m, and (D) an inorganic substance powder having an average particle diameter of less than 40 &mgr;m; and a method for production of cover packing using the composition. With this composition which is a one-pack type, curable composition, no apparatus for mixing the main material and the curing agent is required; by heating, dissociation of blocking agent and completion of reaction are allowed to take place simultaneously; and a cover packing superior in mechanical strength, etc. can be formed.Type: GrantFiled: July 30, 2001Date of Patent: August 19, 2003Assignee: Nippon Polyurethane Industry Co., Ltd.Inventors: Hiroei Yokota, Sumito Nii, Osamu Takata
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Patent number: 6602927Abstract: The invention provides polyisocyanurate systems for manufacture of polyisocyanurate foam components such as those from SRIM processes. The reaction systems include a polyisocyanate and a polyisocyanate reactive component that includes a trimerization catalyst, polyol, and a carboxylic acid blowing agent, optionally with water as a co-blowing agent. The reaction systems can be blown exclusively with carboxylic acid to produce SRIM products which can be demolded with reduced mold residence time.Type: GrantFiled: October 2, 2000Date of Patent: August 5, 2003Assignee: Huntsman International LLCInventor: Andreas Rothacker
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Patent number: 6593387Abstract: The invention relates to 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: April 12, 2002Date of Patent: July 15, 2003Assignee: Huntsman International LLCInventors: Alain Parfondry, Jianming Yu
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Patent number: 6593385Abstract: The invention relates to a halogen-free, pentane-blown, flame-retardant rigid polyurethane foam, wherein oxalkylated alkylphosphonic acids are present as flame retardants. The invention further relates to a process for producing halogen-free, pentane-blown, flame-retardant rigid polyurethane foams, which comprises using oxalkylated alkylphosphonic acids as flame retardants. Finally, the invention also relates to the use of oxalkylated alkylphosphonic acids of the formula I as halogen-free flame retardants for producing flame-retardant rigid polyurethane foams.Type: GrantFiled: March 27, 2001Date of Patent: July 15, 2003Assignee: Clariant GmbHInventors: Anne Witte, Wilfried Krieger
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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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Patent number: 6590003Abstract: The invention provides a process for the production of flexible to semi-rigid polyurethane shaped articles with a compacted edge zone of given hardness and a significantly more flexible cell core, so-called integral foams, in which non-combustible mixtures of fluoroalkanes which comprise 1,1,1,3,3-pentafluorobutane (R 365mfc) are employed as physical blowing agents.Type: GrantFiled: June 6, 2002Date of Patent: July 8, 2003Assignee: Bayer AktiengesellschaftInventors: Norbert Eisen, Daniel Seidlitz
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Patent number: 6590005Abstract: Rigid polyurethane foams are prepared from an isocyanate composition containing diphenylmethane diisocyanate, three ring oligomers of polyphenylene polymethylene polyisocyanate and higher homologues of polyphenylene polymethylene polyisocyanate.Type: GrantFiled: July 24, 2002Date of Patent: July 8, 2003Assignee: Huntsman International LLCInventors: Sachchida Singh, Steven Burns
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Patent number: 6586486Abstract: Low-density hydrophilic flexible polyurethane foams are prepared by reacting organic and/or modified organic polyisocyanates (a) with a polyetherol mixture (b) and, if required, further compounds (c) having hydrogen atoms reactive toward isocyanates, in the presence of water and/or other blowing agents (d), catalysts (e) and, if required, further assistants and additives (f), by a process in which the polyetherol mixture (b) consists of b1) at least one difunctional or polyfunctional polyetherol based on propylene oxide and/or butylene oxide and ethylene oxide, having an ethylene oxide content of more than 40% by weight, based on the total amount of alkylene oxide used, an OH number of from 20 to 120 mg KOH/g and a proportion of primary OH groups of more than 20% and b2) at least one difunctional or polyfunctional polyetherol based on propylene oxide and/or butylene oxide and, if required, ethylene oxide, the ethylene oxide content being not more than 40% by weight, and having an OH number of more than 25 mType: GrantFiled: January 15, 2002Date of Patent: July 1, 2003Assignee: BASF AktiengesellschaftInventors: Peter Falke, Heinz-Dieter Lutter, Michael J. Pcolinski
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Patent number: 6586485Abstract: In a process for producing flexible polyurethane foams by the reaction known per se of polyisocyanates with compounds containing at least two hydrogen atoms which react with isocyanate, the reaction is carried out in the presence of cyclic or heterocyclic compounds containing at least one reactive hydrogen atom.Type: GrantFiled: October 6, 1998Date of Patent: July 1, 2003Assignee: BASF AktiengesellschaftInventors: Bernd Bruchmann, Heinz-Dieter Lutter
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Patent number: 6586487Abstract: A method for making an energy-absorbing foam having a density that is less than about 7 pcf that exhibits excellent strength properties and that is particularly suitable for automobile bumper applications. The invention is also directed to the energy-absorbing foam made with the method.Type: GrantFiled: July 12, 2000Date of Patent: July 1, 2003Assignee: Bayer CorporationInventors: Neil H. Nodelman, David D. Steppan, Alan D. Bushmire, William E. Slack
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Patent number: 6583192Abstract: Flexible polyurethane foams are prepared by reacting organic and/or modified organic polyisocyanates (a) with a polyetherol mixture (b) and, if required, further compounds (c) having hydrogen atoms reactive toward isocyanates, in the presence of water and/or other blowing agents (d), catalysts (e) and, if required, further assistants and additives (f), by a process in which the polyetherol mixture (b) consists of b1) at least one polyetherol which is at least difunctional, has an OH number of from 20 to 100 mg KOH/g and is based on propylene oxide and/or butylene oxide and ethylene oxide, having an ethylene oxide content of more than 40% by weight, based on the total amount of alkylene oxide used, and, if required, further polyetherols which are at least difunctional, are based on propylene oxide and/or butylene oxide and ethylene oxide and have an OH number of from 20 to 160 mg KOH/g and b2) at least one difunctional to hexafunctional polyetherol based on propylene oxide and/or butylene oxide and having anType: GrantFiled: January 15, 2002Date of Patent: June 24, 2003Assignee: BASF AktiengesellschaftInventors: Peter Falke, Heinz-Jürgen Schröder, Lothar Baum
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Patent number: 6579912Abstract: Process for preparing flexible polyurethane foam by reacting an MDI-based polyisocyanate and a polyether polyol with a |&Dgr;Hm| of at least 30 J/g and a Tm of 4° C. and more.Type: GrantFiled: July 18, 2002Date of Patent: June 17, 2003Assignee: Huntsman International LLCInventors: Alain Parfondry, Jianming Yu
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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
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Publication number: 20030092787Abstract: Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethanes with improved properties. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of polyurethanes in the presence of excess water. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of water-blown, low-density polyurethanes in the presence of excess water. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of water-blown, low-density polyurethanes. Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethane foams with improved dimensional stability properties. Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethane elastomers in the presence of water.Type: ApplicationFiled: December 20, 2002Publication date: May 15, 2003Applicant: POLYTHANE SYSTEMS, INC. a Texas corporationInventor: Scott A. Brown
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Patent number: 6562880Abstract: Rigid polyurethane or polyisocyanurate foams are produced by reacting an organic polyisocyanate with an amine-based polyether polyol in the presence of a catalyst, a hydrogen-containing fluorocarbon, water and carbon dioxide.Type: GrantFiled: April 17, 2002Date of Patent: May 13, 2003Assignee: Bayer CorporationInventors: Herman P. Doerge, Mauricio H. Venegas
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Patent number: 6548609Abstract: The present invention is related to an improved process for obtaining oleochemical polyols from oils, principally of a vegetable origin. The polyols obtained consist of a mixture of ethers, esters, primary and secondary alcohols and have the characteristic of being self-compatible with the new blowing agents: hydrochlorofluorocarbons, HCFC's, hydrofluorocarbons, HFC's and hydrocarbons, HC's of a low molecular weight and low boiling point. The process of this invention is characterized because it uses Lewis type acids in such a way that they do not form precipitates and therefore it is not necessary to remove precipitates from the polyol. The process of the present invention makes it possible to obtain polyols with high functionality and controlled reactivity. These characteristics render the product suitable for use as a raw material in the production process of rigid foams, such as polyurethane for spraying, refrigeration and imitation wood, coatings, among others.Type: GrantFiled: November 21, 2001Date of Patent: April 15, 2003Assignee: Resinas Y Materiales S.A. De C.V.Inventors: Nicolás Ramírez-de-Arellano-Aburto, Andrés Cohen-Barki, M. Javier Cruz-Gómez
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Patent number: 6541532Abstract: New, useful and surprisingly effective antiscorch compositions for utilization within polyurethane foam production methods which utilize very popular tertiary amine catalysts are provided. Such compositions require the presence of nominal yet effective amounts of organic cyclic ester materials. The ring systems of such materials appear to open during exposure to heat (during the curing process) and release carboxylic acids into the curing formulation. The tertiary amines become quenched by the carboxylic acids and thus do not exhibit heat destabilization. The resultant foams exhibit extremely low, if no, areas of excessive heating (i.e., scorch) and thus are substantially uniformly colored throughout. The processes and resultant foams are also contemplated within this invention.Type: GrantFiled: June 2, 2000Date of Patent: April 1, 2003Assignee: Milliken & CompanyInventors: Mark E. Ragsdale, Sandy G. Belue
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Patent number: 6541531Abstract: This invention relates to an improved dosing assembly (valve/feed line/liquid collecting vessel) which permits nearly immediate response time to an actuator signal. Such an assembly is used for the controlled introduction of any liquid through a valve into a collecting vessel. In particular, the inventive assembly exhibits substantially no leakage from the feed line into the liquid collecting vessel when the valve is closed and an instantaneous introduction of the feed line liquid into the liquid collecting vessel upon opening of the valve, both when a liquid possessing a surface tension of about 50 dynes/cm2 is used as the measurement standard. This assembly is particularly and preferably suited for injecting colorants into reactants for the production of polyurethane slabstock foam and permits a substantial reduction in foam waste due to low colorations during an on/off cycle.Type: GrantFiled: November 19, 2001Date of Patent: April 1, 2003Assignee: Milliken & CompanyInventor: Mark E. Ragsdale
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Patent number: 6541534Abstract: Polyurethane foams containing a syntactic phase and a cellular, non-syntactic phase are useful as reinforcing foams, such as in automotive applications. The foams are conveniently made in the reaction of a high viscosity isocyanate-reactive component and a high-viscosity polyisocyanate component, at least one of which contains a plurality of hollow microspheres.Type: GrantFiled: May 9, 2002Date of Patent: April 1, 2003Assignee: Essex Specialty Products, Inc.Inventors: Mark P. Allen, Roney J. Matijega
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Patent number: 6541530Abstract: A urethane-modified polyisocyanurate foam obtained by reacting (A) a polyisocyanate compound component, (B) a polyol component, containing a modified phenolic resin obtained by adding 20 to 100 parts by weight of a polyhydric alcohol or its alkylene oxide adduct to 100 parts by weight of a benzylic ether type phenolic resin and heating under a reduced pressure, in an amount of at least 3 wt % to the total resin component, (C) water and (D) a foam stabilizer comprising a mixture of at least 2 silicone type surfactants having different surface tensions wherein a surfactant having a higher surface tension has a surface tension of higher than 22 dyne/cm and a surfactant having a lower surface tension has a surface tension of at most 22 dyne/cm, in the presence of (E) a urethane-forming catalyst and/or a trimerization catalyst.Type: GrantFiled: November 27, 2001Date of Patent: April 1, 2003Assignee: Hodogaya Chemical Co., Ltd.Inventors: Tsuyoshi Sato, Tsutomu Nakamura
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Publication number: 20030050355Abstract: New, useful and surprisingly effective antiscorch compositions for utilization within polyurethane foam production methods which utilize very popular tertiary amine catalysts are provided. Such compositions require the presence of nominal yet effective amounts of organic cyclic ester materials. The ring systems of such materials appear to open during exposure to heat (during the curing process) and release carboxylic acids into the curing formulation. The tertiary amines become quenched by the carboxylic acids and thus do not exhibit heat destabilization. The resultant foams exhibit extremely low, if no, areas of excessive heating (i.e., scorch) and thus are substantially uniformly colored throughout. The processes and resultant foams are also contemplated within this invention.Type: ApplicationFiled: November 1, 2002Publication date: March 13, 2003Inventors: Mark E. Ragsdale, Sandy G. Belue
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Publication number: 20030045594Abstract: The present invention is a low density polyurethane foam cushion useful as an attached carpet cushion or as a detached carpet underlay. The low density foams of the present invention are prepared by a process wherein a polyurethane foam formulation is blown by both mechanical and chemical processes.Type: ApplicationFiled: October 12, 2001Publication date: March 6, 2003Inventors: Daniel W. Kazmierski, Randall C. Jenkines
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Patent number: 6528549Abstract: Polyol blend comprising a polyester polyol, a tertiary amine catalyst and an organic carboxylic acid wherein said carboxylic acid contains at least one OH, SH, NH2 or NHR functional group, wherein R is an alkyl, cycloalkyl or aryl group and the use of said polyol blend in the manufacture of rigid polyurethane foams.Type: GrantFiled: March 6, 2002Date of Patent: March 4, 2003Assignee: Imperial Chemical Industries PLCInventors: Thomas Heinrich Sieker, Franco Gabrieli, Saskia Rachel Walraedt
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Patent number: 6528551Abstract: A process for manufacturing composite thermal insulating systems using an organic adhesive or filler material serving as an adhesive for insulating boards to be attached to a facade or as a filler material for evening out facade unevenness prior to attaching the insulating boards or for producing a reinforcing layer on the attached insulating boards. The adhesive or filler material is foamed prior to its use.Type: GrantFiled: March 23, 2000Date of Patent: March 4, 2003Assignee: Sto AgInventor: Peter Grochal
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Patent number: 6525108Abstract: New, useful and surprisingly effective antiscorch compositions for utilization within polyurethane foam production methods which utilize very popular tertiary amine catalysts are provided. Such compositions require the presence of nominal yet effective amounts of organic cyclic ester materials. The ring systems of such materials appear to open during exposure to heat (during the curing process) and release carboxylic acids into the curing formulation. The tertiary amines become quenched by the carboxylic acids and thus do not exhibit heat destabilization. The resultant foams exhibit extremely low, if no, areas of excessive heating (i.e., scorch) and thus are substantially uniformly colored throughout. The processes and resultant foams are also contemplated within this invention.Type: GrantFiled: February 26, 2001Date of Patent: February 25, 2003Assignee: Milliken & CompanyInventors: Mark E. Ragsdale, Sandy G. Belue
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Patent number: 6525107Abstract: Novel acid-blocked amine catalysts and their use in the preparation of polyurethanes. The acid-blocked amine catalysts have the general structure shown below: wherein A is the residue of an organic acid anhydride; R1 is H or C1 to C6 alkyl; R2 is H or C1 to C6 alkyl; n is an integer of 0 to 10; and B is a compound containing a protonated amine and one or more primary amine, secondary amine, or tertiary amine groups.Type: GrantFiled: June 18, 2002Date of Patent: February 25, 2003Assignee: Air Products and Chemicals, Inc.Inventors: Stephan Herman Wendel, Reza Fard-Aghaie
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Patent number: 6521673Abstract: Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethanes with improved properties. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of polyurethanes in the presence of excess water. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of water-blown, low-density polyurethanes in the presence of excess water. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of water-blown, low-density polyurethanes. Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethane foams with improved dimensional stability properties. Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethane elastomers in the presence of water.Type: GrantFiled: October 10, 2000Date of Patent: February 18, 2003Assignee: Polythane Systems, Inc.Inventor: Scott A. Brown
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Publication number: 20030032688Abstract: A method for producing a rigid foamed synthetic resin, which comprises reacting a polyol with a polyisocyanate compound in the presence of water, a catalyst and a fluorine-containing compound of the formula 1:Type: ApplicationFiled: July 18, 2002Publication date: February 13, 2003Applicant: Asahi Glass Company, LimitedInventors: Hiromichi Hotta, Hisashi Sato, Tadanobu Kuroki, Genichirou Enna
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Patent number: 6509388Abstract: The invention provides a method of forming a polyurethane foam suitable for use as a wound-contacting layer, said method comprising: mixing 1 part by weight of an isocyanate-capped prepolymer having from 0.5 to 4.8 meq. NCO groups/g with from 0.4 to 1.0 parts by weight of water and an effective amount of a nonvolatile pharmaceutically acceptable acid to form a prepolymer mixture; allowing said prepolymer mixture to cure to form a foamed product; followed by drying the foamed product. The invention also provides acidified polyurethane foams obtainable by this method, and wound dressings comprising such foams.Type: GrantFiled: November 15, 2001Date of Patent: January 21, 2003Assignee: Johnson and Johnson Medical LimitedInventor: Deborah Addison
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Patent number: 6506811Abstract: Carbamate solutions are obtainable by reacting at least one alkanolamine with carbon dioxide in, as solvent, at least one organic compound having a molecular weight of from 60 to 600 and containing at least one hydroxyl group, wherein the carbamate contains at least 0.Type: GrantFiled: September 28, 2001Date of Patent: January 14, 2003Assignee: BASF AktiengesellschaftInventors: Peter Woo, Anke Schulze, Edmund Stadler, Dieter Tintelnot, Udo Hadick, Ralf Hinrichs, Horst Hürkamp, Klaus Sobolewski
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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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Patent number: 6486224Abstract: The disclosed invention relates to a polyurethane elastomer that has improved hydrolysis resistance. The polyurethane elastomer is made by reacting a polyol blend of an aromatic dicarboxylic acid based polyester polyol, an aliphatic dicarboxylic acid based polyester polyol, and a blowing agent. The polyol blend is reacted with an isocyanate terminated prepolymer. The aromatic dicarboxylic acid based polyester polyol is the reaction product of an aliphatic alcohol and ortho-phthalic acid. The aliphatic dicarboxylic acid based polyester polyol is the reaction product of adipic acid and glycols.Type: GrantFiled: August 23, 2001Date of Patent: November 26, 2002Assignee: Huntsman International LLCInventors: Nai Wen Lin, Ravi R. Joshi
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Patent number: 6479560Abstract: A low-temperature foam compositions and that are produced from an epoxy compound and an acid source can be substantially free of polyurethane or isocyanate chemistry. The disclosed compositions and precursors thereof reduce, if not eliminate, the presence of conventional undesirable compounds and by-products thereof.Type: GrantFiled: May 24, 2000Date of Patent: November 12, 2002Assignee: Denovus LLCInventors: James W. Freitag, Donald W. Taylor, Jess Rogers, Jeffrey T. Pachl
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Patent number: 6465534Abstract: A sponge including an elastic material having a lipid, such as an oil, a fat, or a combination thereof, integrally formed therewith. The elastic material includes an amount from between 0.5 to 20 parts by weight of the lipid, and the lipid is selected from the group consisting of esters of fatty acids, alkanes, squalane and derivatives thereof squalene, bisabolol, animal hair oils and fats, wax, lanolin and combinations thereof to provide the sponge with a gentle feel. The sponge may also be made by first foam molding the sponge from an elastic material, impregnating the sponge with a water-dispersed lipid and allowing the sponge to dry for a predetermined amount of time so that the lipid is substantially inseparable from the elastic material.Type: GrantFiled: July 5, 2001Date of Patent: October 15, 2002Assignee: Yukigaya Chemical Industry Co., Ltd.Inventors: Yoshio Fukuzawa, Kazuo Obata, Takayuki Hayashi
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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
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Patent number: 6458861Abstract: Microcellular polyurethane flexible foams suitable for use as lightweight shoe sole components are produced by dissolving carbon dioxide into one or both of the iso-side or resin-side of an isocyanate-prepolymer-based microcellular polyurethane foam formulation. The resultant foams possess more uniform cell structure and enhanced physical properties as compared to all water-blown foams of the same basic formulation and density. The hardness of the foams is more suitable for shoe sole, particularly midsole applications, than that of the water-blown foams, despite the lower urea hard segment content of the CO2 blown foams.Type: GrantFiled: January 18, 2001Date of Patent: October 1, 2002Assignee: Bayer Antwerp N.V.Inventor: Usama E. Younes
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Patent number: 6455601Abstract: Rigid polyurethane foams are prepared from an isocyanate composition containing diphenylmethane diisocyanate, three ring oligomers of polyphenylene polymethylene polyisocyanate and higher homologues of polyphenylene polymethylene polyisocyanate.Type: GrantFiled: May 24, 2001Date of Patent: September 24, 2002Assignee: Huntsman International LLCInventors: Sachchida Singh, Steven Burns
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Patent number: 6451348Abstract: A method of manufacturing a porous matrix-type drug delivery system is provided. It comprises the steps of: dispersing, stirring, and emulsifying an aqueous solution of a drug in an organic solvent having a polymer compound and a surface active agent solved therein; thereafter forming it into a desirable matrix shape; lyophilizing or drying it at a low temperature or room temperature until the matrix surface is hardened; and drying it again in order to remove the water and the organic solvent.Type: GrantFiled: January 3, 2000Date of Patent: September 17, 2002Assignee: Korea Institute of Science and TechnologyInventors: Seo Young Jeong, Kuiwon Choi, Ick-Chan Kwon, Yong-Hee Kim, Jae Bong Choi, Kyu Back Lee
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Patent number: RE37932Abstract: A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a plurality of cells distributed substantially throughout the material. Cell densities lying in a range from about 109 to about 1015 per cubic centimeter of the material can be achieved with the average cell sizes being at least less than 2.0 microns and preferably in a range from about 0.1 micron to about 1.0 micron.Type: GrantFiled: August 2, 1996Date of Patent: December 10, 2002Assignee: Massachusetts Institute of TechnologyInventors: Daniel F. Baldwin, Nam P. Suh, Chul B. Park, Sung W. Cha