Nitrogen Compound Contains A Nitrogen Atom Bonded To Three Carbon Atoms And Wherein None Of The Carbon Atoms Are Double-bonded To Oxygen Patents (Class 521/129)
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Patent number: 6384177Abstract: An amine catalyst for production of a polyurethane and a polyisocyanurate is provided which comprises a quaternary ammonium compound represented by General Formula (1): where R1 to R6 are independently a linear or branched saturated hydrocarbon group of 1 to 4 carbon atoms; R7 and R8 are independently a linear or branched, saturated or unsaturated hydrocarbon group of 2 to 12 carbon atoms; n is a number of 0 to 3, provided that at n=o any one of R1, R2 and R3, and R5 and/or R6 may be linked together to form a heterocycle, or at n=1, 2, or 3, R5 or R6 and R4 may be linked together to form a heterocycle; A is a carbonate group or an organic acid group; and X is number of 1 to 2. The catalyst has high activity in formation of polyurethane foams and polyisocyanurate foams, having less odor, and producing foams of high fire retardance, having high curability, high retarding effect, and low corrosiveness.Type: GrantFiled: August 27, 2001Date of Patent: May 7, 2002Assignee: Tosoh CorporationInventors: Katsumi Tokumoto, Yutaka Tamano, Shuichi Okuzono
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Patent number: 6384097Abstract: An amine catalyst for production of a polyurethane and a polyisocyanurate is provided which comprises a quaternary ammonium compound represented by General Formula (1): where R1 to R6 are independently a linear or branched saturated hydrocarbon group of 1 to 4 carbon atoms; R7 and R8 are independently a linear or branched, saturated or unsaturated hydrocarbon group of 2 to 12 carbon atoms; n is a number of 0 to 3, provided that at n=0 any one of R1, R2 and R3, and R5 and/or R6 may be linked together to form a heterocycle, or at n=1, 2, or 3, R5 or R6 and R4 may be linked together to form a heterocycle; A is a carbonate group or an organic acid group; and X is number of 1 to 2. The catalyst has high activity in formation of polyurethane foams and polyisocyanurate foams, having less odor, and producing foams of high fire retardance, having high curability, high retarding effect, and low corrosiveness.Type: GrantFiled: August 27, 2001Date of Patent: May 7, 2002Assignee: Tosoh CorporationInventors: Katsumi Tokumoto, Yutaka Tamano, Shuichi Okuzono
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Patent number: 6380274Abstract: A composition having the formula: wherein R is a linear alkyl, branched alkyl, cycloalkyl, polycyclic alkyl, alkylaminoalkyl, or alkyloxyalkyl group having 1 to 20 carbon atoms and at least one primary, secondary, or tertiary amino functional group. The composition is effective as a catalyst in the production of polyurethanes.Type: GrantFiled: August 8, 2001Date of Patent: April 30, 2002Assignee: Air Products and Chemicals, Inc.Inventors: Ning Chen, Richard Paul Underwood, Mark Leo Listemann
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Patent number: 6359023Abstract: Described is an NCO-group-containing polyurethane prepolymer madefrom polyisocanyates and polyols derived from natural oils. The invention is characterized in that the polyol is obtained by transesterification in the presence of basic lithium compounds. Together with a tertiary amine used to accelerate the moisture curing, the storage stability is thus increased considerably. Up to 4.0 mmol of the lithium compound is used per kilogram of polyol, and 0.1 to 2.0% by wt. of the amine, relative to the total weight of the composition, is used as the accelerator. The polyurethane prepolymer is suitable not only for the production of adhesives but also for the production of foamed materials, in particular those dispensed from throw-away pressure vessels.Type: GrantFiled: February 10, 1998Date of Patent: March 19, 2002Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Hermann Kluth, Wolfgang Klauck, Johann Klein, Wilfried Huebner
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Publication number: 20020025989Abstract: The invention relates to the combined use of metal salts of ricinoleic acid with reactive amines in the preparation of polyurethane foams (PUR foams) and of their solutions in aqueous or organic solvents in the preparation of polyurethane foams in combination with reactive amines.Type: ApplicationFiled: June 18, 2001Publication date: February 28, 2002Inventors: Ralf Hoffmann, Hans-Heinrich Schlons
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Patent number: 6346559Abstract: A polyurethane foam and associated production process, in particular flexible to semi-hard block foams or soft molded foams, using polyesters or polyethers as polyols. A carbamate, or a mixture of carbamates, is used simultaneously as propellant and as catalyst, wherein the carbamate or the carbamates have the general Formula I wherein: R1 and R2 represent the same or different alkyl radicals, R3 and R4 represent the same or different radicals and denote hydrogen or alkyl radicals, R5 denotes hydrogen, an alkanol radical, a polyether monool radical or the alkyl radical, characterized by X and n represents 2 or 3.Type: GrantFiled: November 3, 2000Date of Patent: February 12, 2002Assignee: Otto Bock Schaumstoffwerke GmbH & Co. KGInventors: Karl-Heinz Thiele, Peter Gansen
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Publication number: 20020016376Abstract: The invention relates to a process for preparing polyurethane foams (PUR foams) which uses reactive amines of the formula 1Type: ApplicationFiled: June 18, 2001Publication date: February 7, 2002Inventors: Oliver Eyrisch, Ralf Hoffman, Hans-Heinrich Schlons
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Patent number: 6326412Abstract: The present invention relates to a polyurethane foam and associated production process, in particular a polyurethane integral foam and associated production process, whereby a carbamate or a mixture of carbamates is used simultaneously as propellant and as catalyst, and the carbamate or the carbamates have the general Formula I: wherein: R1 and R2 represent the same or different alkyl radicals, R3 and R4 represent the same or different radicals and denote hydrogen or alkyl radicals, R5 denotes hydrogen, an alkanol radical, a polyether monool radical or the radical characterized by X, n represents 2 or 3.Type: GrantFiled: November 3, 2000Date of Patent: December 4, 2001Assignee: Otto Bock Schaumsysteme GmbH & Co. KGInventors: Hans Weber, Peter Gansen
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Patent number: 6306918Abstract: A semi-rigid polyurethane foam having a strength retention of not less than 70% when allowing it to stand at 120° C. for 24 hours, and a Haze value of not more than 2 as determined by Fogging test, prepared by mixing a polyol mixture comprising a polyol, water and a catalyst with a polyisocyanate, and foaming the resulting mixture, and a process for preparing the same. The semi-rigid polyurethane foam would not cause fogging under high-temperature conditions, and can be suitably used for interior materials of automobiles such as headrests and armrests.Type: GrantFiled: August 31, 1999Date of Patent: October 23, 2001Assignee: Kao CorporationInventors: Mitsuru Sakai, Atsushi Ishikawa, Masayoshi Morii
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Patent number: 6306920Abstract: Closed cell rigid polyurethane foams are produced by reacting a) a polyol component with b) a polyisocyanate having an NCO content of from about 20 to about 48% by weight.Type: GrantFiled: November 18, 1999Date of Patent: October 23, 2001Assignee: Bayer AktiengesellschaftInventors: Torsten Heinemann, Werner Dietrich, Walter Klän
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Patent number: 6294589Abstract: A polyurethane composition for fabricating antimicrobial based products such as polyurethane foam carpet backing materials and carpets having a polyurethane foam carpet backing material. The polyurethane composition includes a plurality of particles comprising an antimicrobial agent which are at least partially encapsulated by a plasticizer material before being dispersed within a polyurethane.Type: GrantFiled: May 12, 2000Date of Patent: September 25, 2001Assignee: Shaw Industries, Inc.Inventor: Von L. Moody
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Publication number: 20010006986Abstract: Process for making rigid polyurethane or urethane-modified polyisocyanurate foams comprising the step of reacting an organic polyisocyanate composition with an isocyanate-reactive composition comprising a polyester polyol in the presence of an amine catalyst characterized in that the pKa of the conjugated ammonium salt of said amine is less than 12.Type: ApplicationFiled: January 18, 2001Publication date: July 5, 2001Applicant: Imperial Chemical Industries PLCInventors: Thomas Heinrich Sieker, Franco Gabrieli
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Patent number: 6248801Abstract: A method for making flexible polyurethane foam in which a polyisocyanate is reacted with a polyol in the presence of a urethane catalyst, a blowing agent, optionally a silicone surfactant cell stabilizer, and a cell opening additive. The cell opening additive comprises an active methylene or methine compound which also contains a tertiary amine. Preferred cell opening additives are 2-cyano-N-[3-(dimethylamino)-propyl]acetamide and (NC)CH2C(O)OCH2CH2N(CH3)CH2CH2OCH2CH2N(CH3)2.Type: GrantFiled: November 12, 1999Date of Patent: June 19, 2001Assignee: Air Products and Chemicals, Inc.Inventor: Ingrid Kristine Meier
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Patent number: 6232356Abstract: The present invention provides a reactive catalyst composition for making a water blown flexible polyurethane foam. The catalyst composition comprises a tertiary amino alkyl urea and/or bis(tertiary amino alkyl) urea in combination with either a gelling catalyst or blowing catalyst. The use of such catalyst composition improves the physical properties of the polyurethane foam.Type: GrantFiled: June 20, 1997Date of Patent: May 15, 2001Assignee: Air Products and Chemicals, Inc.Inventors: Lisa Ann Mercando, Mark Leo Listemann, Michael John Kimock
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Patent number: 6201033Abstract: The present invention provides a reactive catalyst composition for making a water blown flexible polyurethane foam. The catalyst composition comprises a tertiary amino alkyl urea and/or bis(tertiary amino alkyl) urea in combination with either a tertiary amine gelling catalyst or a tertiary amine blowing catalyst. The use of such catalyst composition improves the physical properties of the polyurethane foam.Type: GrantFiled: February 24, 1999Date of Patent: March 13, 2001Assignee: Air Products and Chemical, Inc.Inventors: Lisa Ann Mercando, Mark Leo Listemann, Michael John Kimock
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Patent number: 6194475Abstract: The invention relates to the use of metal salts of ricinoleic acid or solutions thereof in water or in organic solvents in producing polyurethane foams.Type: GrantFiled: December 16, 1999Date of Patent: February 27, 2001Assignee: Goldschmidt AGInventors: Tammo Boinowitz, Georg Burkhart, Ralf Hoffmann, Felix Müller, Hans-Heinrich Schlöns, Andreas Weier, Volker Zellmer, Rainer Ziegler
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Patent number: 6191179Abstract: A process for the preparation of foamed plastics materials based on polyisocyanate polyaddition products by the reaction of isocyanates with isocyanate-reactive compounds in the presence of catalysts and, optionally, auxiliaries and/or additives, wherein i) isocyanates having isocyanurate and/or biuret structures are used, the isocyanate-reactive compounds used are ii) at least one diol and/or polyol having a molecular weight of from 400 to 8000 and containing at least 50% of primary hydroxyl groups based on all of the hydroxyl groups present in the compound, iii) at least one compound having at least one primary amine group, and diols and/or triols having molecular weights of less than 400 are optionally used as chain-extending and/or crosslinking agents, the reaction being carried out in the presence of iv) at least one tertiary amine acting as catalyst and/or v) at least one metal salt acting as catalyst and vi) water.Type: GrantFiled: March 17, 1999Date of Patent: February 20, 2001Assignee: BASF AktiengesellschaftInventors: Dietrich Scherzer, Ulrich Treuling, Klaus Wagner, Rolf Illguth, Sarbananda Chakrabarti
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Patent number: 6184262Abstract: Polyether and polyester poloyols and polyurethane foams are stabilized by including therein stabilizers selected from (1) diphenylaminomethylbenzotriazole substituted by alkyl or phenylalkyl groups or (2) synergistic compositions consisting of (a) benzotriazole or alkylbenzotriazole and (b) secondary aromatic amine substituted by alkyl or phenylalkyl groups wherein the benzotriazole and amine is present in critical ratios. Furthermore, a method is disclosed for preparation of polyurethane foams from polyols and polyisocyanate that have reduced discoloration due to scorch by adding diphenylamino methylbenzotriazole or compositions of benzotriazole and secondary aromatic amine as scorch inhibitors to the polyol, foaming the polyol and curing.Type: GrantFiled: September 22, 1997Date of Patent: February 6, 2001Assignee: R. T. Vanderbilt Company, Inc.Inventors: Richard A. Suhoza, Thomas J. Karol, James J. Talbot
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Patent number: 6156814Abstract: The use of 3-[3-(dimethylamino)propyl]-propionamide (Formula I) and 3,3'-{[3-(dimethylamino)propyl]imino}bis-propanamide (Formula II) as catalysts in the production of polyurethanes.Type: GrantFiled: March 26, 1999Date of Patent: December 5, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Ning Chen, Richard Van Court Carr, Mark Leo Listemann, Richard Paul Underwood
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Patent number: 6153659Abstract: 3-{N-[2-(N',N'-dimethylamino ethoxy)ethyl]-N-methylamino}propionamide is a new compound which is useful as a catalyst in the production of polyurethane foams.Type: GrantFiled: December 7, 1999Date of Patent: November 28, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Richard Van Court Carr, Ning Chen, Mark Leo Listemann, Richard Paul Underwood
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Patent number: 6147131Abstract: High internal phase emulsions (HIPEs), porous polymeric materials made therefrom, and methods for making and using the same. Specific embodiments of the invention include water-in-oil high internal phase emulsions having at least 70 volume percent of an internal aqueous phase and less than 30 volume percent of an external oil phase wherein the oil phase comprises a vinyl polymerizable monomer and a surfactant effective to stabilize the emulsion. The subject surfactants are oil soluble and preferably include an oxyalkylene component.Type: GrantFiled: November 18, 1998Date of Patent: November 14, 2000Assignee: The Dow Chemical CompanyInventors: Steven W. Mork, Daniel Patrick Green, Gene D. Rose
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Patent number: 6114403Abstract: A polyurethane catalyst composition comprises N,N'-bis(3-dimethylaminopropyl) urea and 3-dimethylaminopropyl urea in a ratio that can be varied to systematically control flowability, % open cell content and k-factor value for rigid polyurethane foam to enhance processibility. Increasing the N,N'-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio decreases the open cell content and k-factor value of the foam whereas decreasing the N,'N-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio improves the flowability of the foaming composition.Type: GrantFiled: June 9, 1999Date of Patent: September 5, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Lisa Ann Mercando, Jane Garrett Kniss, John William Miller
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Patent number: 6077927Abstract: A method of providing for manufacturing a colored polymer resin having the steps of:(a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene) substituent comprising from 2 to 200 alkylene oxide residues, bonded to each end of the disazo chromophore, the poly(oxyalkylene) substituent having a nucleophilic terminal group which is capable of reacting with at least a portion of the monomers;(b) providing conditions under which the monomers and disazo colorant polymerize to form a colored polymer resin.Type: GrantFiled: October 23, 1998Date of Patent: June 20, 2000Assignee: Milliken & CompanyInventors: Eric B. Stephens, Mark E. Ragsdale, David J. Moody
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Patent number: 6077877Abstract: The present invention provides amine/amide catalysts for use in catalyzing the formation of polyurethane. The amine/amide catalysts, which have low fugitivity due to their reactivity with isocyanates, and good catalytic activity, have the structure ##STR1## wherein Q is C.sub.z H.sub.2z+1, or (CH.sub.2).sub.n N(R.sup.3).sub.k T, T is a monovalent C.sub.1 -C.sub.4 alkyl, amino-C.sub.1 -C.sub.4 -alkyl, mono-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.4 -alkyl, or di-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.4 -alkyl group, or T is a divalent alkyl, amine substituted alkyl, alkylaminoalkyl, or alkoxyalkyl group which forms with the nitrogen atom shown in structure (I) to which T is attached a cyclic structure which incorporates up to 6 carbon atoms in the ring as well as the nitrogen atom shown in structure (I), which cyclic structure may be substituted with C.sub.1 to C.sub.4 alkyl;k=0 or 1, being 1 if T is a monovalent group and 0 if T is a divalent group; R.sup.2 .dbd.H or C.sub.z H.sub.2z+1 ; R.sup.3 .dbd.Type: GrantFiled: April 3, 1997Date of Patent: June 20, 2000Assignee: CK Witco CorporationInventors: Richard M. Gerkin, K. Kaye Robinson
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Patent number: 6057416Abstract: Increases in reactivity of acidic containing RIM systems are reduced by inclusion of a catalyst system of a zinc-containing compound, a non-zinc containing metal compound and a tertiary amine.Type: GrantFiled: November 7, 1994Date of Patent: May 2, 2000Assignee: Bayer CorporationInventors: Neil H. Nodelman, Albert Magnotta, Robert Loring
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Patent number: 6051527Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of a compound having the following formula I: ##STR1## where R.sup.1 is hydrogen or a C1-C4 linear or branched alkyl, hydroxyalkyl or aminoalkyl group;R.sup.2 is hydrogen or a C1-C6 linear or branched alkyl, hydroxyalkyl or aminoalkyl group; andR.sup.3 and R.sup.4 are independently hydrogen or a C1-C10 linear or branched alkyl, hydroxyalkyl or aminoalkyl group which may contain ether functionality.Type: GrantFiled: February 17, 1999Date of Patent: April 18, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Ann Coates Lescher Savoca, Richard Paul Underwood, Richard Van Court Carr, James Stephen Emerick, Mark Leo Listemann
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Patent number: 6043290Abstract: A method for preparing a polyurethane flexible foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises the reaction product of a C1-C20 hydrocarbyl group-containing organic acid anhydride and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, optionally reacted in the presence of a tertiary amine urethane catalyst.Type: GrantFiled: June 22, 1999Date of Patent: March 28, 2000Assignee: Air Products and Chemicals, Inc.Inventor: Robert G. Petrella
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Patent number: 6031013Abstract: In a process for producing foams based on polyisocyanate polyaddition products by reacting isocyanates with compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000 in the presence of blowing agents, catalysts and, if desired, chain extenders and/or crosslinkers having a molecular weight of <400, auxiliaries and/or additives, use is made of isocyanates having isocyanurate and/or biuret structures, at least one compound which is reactive toward isocyanates, has a molecular weight of from 400 to 8000 and contains at least 50% primary hydroxyl groups, as catalysts at least one tertiary amine and at least one metal salt plus from 0.5 to 5.3% by weight of water, based on the weight of the compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000, and the reaction is carried out at >40.degree. C.Type: GrantFiled: October 21, 1998Date of Patent: February 29, 2000Assignee: BASF AktiengesellschaftInventors: Dietrich Scherzer, Ulrich Treuling, Jurgen Mertes, Rolf Illguth
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Patent number: 6013690Abstract: The present invention relates to polyurethane foams employing an imidazole compound having enhanced substrate adhesion characteristics at relatively low mold temperatures. Additionally, the present invention relates to resin compositions employed in the polyurethane foams and methods of producing polyurethane foams employing the resins.Type: GrantFiled: October 23, 1997Date of Patent: January 11, 2000Assignee: BASF CorporationInventors: Robert S. Coleman, Allan H. Syrop
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Patent number: 6005016Abstract: The present invention is directed to a rigid, molded foam produced by reacting: a) one or more organic polyisocyanates, with b) a polyol blend comprising i) 100 parts by weight of a mixture comprising: 1) from 30 to 80 parts by weight of one or more polyethers having hydroxy functionalities of 2 or 3 and molecular weights of from about 1,000 to about 8,000, the polyethers further being characterized as containing no nitrogen atoms and not being filled polyethers, 2) from 10 to 50 parts by weight of one or more adducts of toluene diamine and an alkylene oxide, the adduct having a molecular weight of from about 350 to about 700, 3) from 0 to 15 parts by weight of one or more di- or trialkanol amines, with the amounts of components 1), 2) and 3) totaling 100 parts, and c) from about 0.1 to about 4 parts by weight per 100 parts by weight of component b) of a silicone cell-opening surfactant and d) from 1 to 7 parts by weight of water, and e) from 0.Type: GrantFiled: October 6, 1998Date of Patent: December 21, 1999Assignee: Bayer CorporationInventors: Neil H. Nodelman, David D. Steppan, John W. Jenny, Peter Gansen
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Patent number: 5998494Abstract: Process for the preparation of rigid open celled polyurethane foams comprising the step of reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promotor which is an isocyanate-reactive cyclic carbonate or cyclic urea, and in the presence of an aminoalcohol catalyst.Type: GrantFiled: May 27, 1998Date of Patent: December 7, 1999Assignee: Imperial Chemical Industries PLCInventor: Alan James Hamilton
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Patent number: 5990186Abstract: A polyurethane foam for a sealant is disclosed which is produced from a composition prepared by compounding reaction mixture comprising a polyisocyanate ingredient and a polyol ingredient with a given amount by weight of an ozone inhibitor ingredient. A sealant of a predetermined shape is obtained from the foam. The polyol ingredient may be one ordinarily used for producing soft polyurethane foams, but especially preferably comprises a polyester-polyether polyol having both an ester segment and an ether segment in the molecular chain. The foam has excellent resistance to ozone deterioration and hence retains a sufficient air permeability required of a sealant for practical use. Further, the foam suffers little decrease in tensile strength from the initial value because it also has excellent resistance to deterioration by moisture and heat, i.e., high hydrolytic stability.Type: GrantFiled: March 4, 1997Date of Patent: November 23, 1999Assignee: Inoac CorporationInventors: Kenichi Katoh, Tadashi Yano, Tadao Yasue, Masahiro Ito, Tadashi Shimizu
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Patent number: 5981612Abstract: The flameproofed, rigid, isocyanate-based foams, in particular rigid polyurethane and polyisocyanurate foams, are produced by reactinga) organic and/or modified organic polyisocyanates withb) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired,c) low-molecular-weight chain extenders and/or crosslinking agents, in the presence ofd) blowing agents,e) catalysts,f) flameproofing agents, and, if desired,g) further auxiliaries and/or additives,wherein the flameproofing agent is a combination of at least one liquid flameproofing agent which is reactive toward isocyanates and at least one solid flameproofing agent.Type: GrantFiled: October 29, 1997Date of Patent: November 9, 1999Assignee: BASF AktiengesellschaftInventors: Uwe Keppeler, Werner Hinz, Michael Reichelt
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Patent number: 5977198Abstract: This invention relates to a process for the production of resilient, flexible polyurethane foams. This process comprises reactingA) polyisocyanates or polyisocyanate prepolymers,B) compounds having at least two isocyanate-reactive hydrogen atoms and a molecular weight of 500 to 18000,C) optionally, compounds having at least two isocyanate-reactive hydrogen atoms and a molecular weight from 32 to 499,D) water,E) optionally, blowing agents,F) activators, stabilizers and other per se known additives, andG) one or more crosslinking agents,wherein component B) comprisesB)i) at least one polyether polyol having of a functionality of 4 to 8 preferably of 4.5 to 8, more preferably of 5 to 7, andB)ii) at least one polyol containing a filler from the group of PUD-, SAN- or PIPA-modified polyols of a functionality of 2.Type: GrantFiled: June 12, 1998Date of Patent: November 2, 1999Assignee: Bayer AktiengesellschaftInventors: Hans Hettel, Peter Haas
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Patent number: 5977194Abstract: High internal phase emulsions having an internal aqueous phase of greater than 70 percent by volume and an external oil phase comprising a vinyl polymerizable monomer contain a surfactant capable of chemically binding to the polymerizable monomer. Polymeric foams having a high internal phase emulsion stabilizing surfactant chemically bound to the polymeric material and a liquid capacity of from about 70 to 99 percent of its saturated volume can be prepared from such emulsions.Type: GrantFiled: November 15, 1995Date of Patent: November 2, 1999Assignee: The Dow Chemical CompanyInventors: Steven W. Mork, Gene D. Rose
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Patent number: 5973016Abstract: There is provided a high resilience polyurethane foam produced from a polydiene diol having a number average molecular weight from 1,000 to 20,000 and a functionality of from 1.6 to 2, an aromatic polyisocyanate, and oil. The polydiene diol foams have excellent processability, producing high resilience foams having small cell size and uniform cell size distributions.Type: GrantFiled: May 19, 1998Date of Patent: October 26, 1999Assignee: Shell Oil CompanyInventors: David John St. Clair, Hector Hernandez
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Patent number: 5958990Abstract: A method for making a rigid polyurethane/polyisocyanurate foam by reacting a polyisocyanate and a polyol in the presence of a trimerization catalyst and a urethane catalyst, a blowing agent and a silicone surfactant characterized by employing as the trimerization catalyst a compound of the following formula:B.sup.+ - O.sub.2 C--X--C(O)--NR--R.sup.1where X is the residue of an organic acid anhydride; R is hydrogen or a C1-C4 alkyl group; R.sup.1 is a C1-C4 alkyl or a phenyl group or Y--NR.sup.2 R.sup.3, where Y is a C2-C6 alkylene group which may contain heteroatoms and R.sup.2 and R.sup.3, which may be the same or different, are C1-C20 alkyl groups which may contain oxygen atoms or which together with the tertiary nitrogen form a 5 or 6 member ring which may contain oxygen atoms; and B is an alkali metal ion or a substituted or unsubstituted quaternary ammonium ion.Type: GrantFiled: November 23, 1998Date of Patent: September 28, 1999Assignee: Air Products and Chemicals, Inc.Inventor: Jobst Grimminger
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Patent number: 5942553Abstract: The disclosed invention relates to polyisocyanate based aerogels and their method of preparation. The aerogels are produced by mixing an organic polyisocyanate, carbon black and catalyst in a solvent. The invention advantageously enables preparation of filled polyisocyanate based organic aerogels of lower density than aerogels which do not include a filler.Type: GrantFiled: November 20, 1997Date of Patent: August 24, 1999Assignee: Imperial Chemical Industries PLCInventors: Guy Leon Biesmans, Andy Mertens
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Patent number: 5889071Abstract: A process for the preparation of polyurethane foams by reacting a polyisocyanate composition with an isocyanate-reactive composition under foam-forming conditions, wherein the isocyanate-reactive composition comprises a monofunctional alcohol and an isocyanate-reactive cyclic urea.Type: GrantFiled: July 21, 1997Date of Patent: March 30, 1999Assignee: Imperial Chemical Industries PLCInventors: Guy Jean Leon Biesmans, Els Jeanne Francine Van Isterdael
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Patent number: 5889067Abstract: Disclosed is a method for producing an open cell rigid polyurethane foam which comprises reacting the mixture of a polyol for producing rigid polyurethane foam, a volatile blowing agent which is free from environmental pollution and selected from the group consisting of hydrocarbons, hydrofluoroalkanes and perfluoroalkanes or a mixture of the volatile blowing agent with water, a monohydric fatty alcohol having a good solubility to hydrocarbon as a cell opening agent, a foam stabilizer forming a very small cell in the presence of a isocyanate trimer catalyst and an organic isocyanate. The resultant open cell rigid polyurethane foam has a cell size of about less than 95 um, and is suitable for use, for example, as a core material in a vacuum heat insulating material. The foam may be enclosed in a container under a vacuum of 0.1.about.0.01 torr and has a thermal conductivity of 0.0045.about.0.0050 kcal/mhr.degree.C.Type: GrantFiled: April 24, 1998Date of Patent: March 30, 1999Assignee: Samsung Electronics Co., Ltd.Inventors: Mi-seon Jang, Jin-taek Hwang, Seung-joo Seo
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Patent number: 5874483Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of a compound having the following formula I: ##STR1## where R.sup.1 is hydrogen or a C1-C4 linear or branched alkyl, hydroxyalkyl or aminoalkyl group;R.sup.2 is hydrogen or a C1-C6 linear or branched alkyl, hydroxyalkyl or aminoalkyl group; andR.sup.3 and R.sup.4 are independently hydrogen or a C1-C10 linear or branched alkyl, hydroxyalkyl or aminoalkyl group which may contain ether functionality.Type: GrantFiled: September 27, 1995Date of Patent: February 23, 1999Assignee: Air Products and Chemicals, Inc.Inventors: Ann Coates Lescher Savoca, Richard Paul Underwood, Richard Van Court Carr, James Stephen Emerick, Mark Leo Listemann
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Patent number: 5864002Abstract: A method of providing for manufacturing a colored polymer resin having the steps of:(a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene) substituent comprising from 2 to 200 alkylene oxide residues, bonded to each end of the disazo chromophore, the poly(oxyalkylene) substituent having a nucleophilic terminal group which is capable of reacting with at least a portion of the monomers;(b) providing conditions under which the monomers and disazo colorant polymerize to form a colored polymer resin.Type: GrantFiled: October 18, 1996Date of Patent: January 26, 1999Assignee: Milliken Research CorporationInventors: Eric B. Stephens, Mark E. Ragsdale, David J. Moody
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Patent number: 5859079Abstract: A polyurethane catalyst composition comprises N,N'-bis(3-dimethylaminopropyl) urea and 3-dimethylaminopropyl urea in a ratio that can be varied to systematically control flowability, airflow, and force-to-crush physical properties for flexible polyurethane foam to enhance processibility. Increasing the N,N'-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio increases the airflow and decreases the force-to-crush values of the foam whereas decreasing the N,N'-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio improves the flowability of the foam.Type: GrantFiled: May 21, 1997Date of Patent: January 12, 1999Assignee: Air Products and Chemicals, Inc.Inventors: Lisa Ann Mercando, Michael John Kimock, Michael Louie, Mark Leo Listemann
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Patent number: 5844012Abstract: A method for producing water-blown molded flexible polyurethane foam which comprises reacting and foaming in one step in a mold a reaction mixture comprising a polyol, an organic polyisocyanate, a urethane catalyst composition and water and a trimerization catalyst which is a quaternary ammonium salt or an alkali metal or alkaline earth metal salt of a Bronsted acid having a pKa of >1, characterized in that the trimerization catalyst is present in an amount from about 0.005 to 0.04 gram milliequivalents per 100 grams of polyol. The preferred trimerization catalyst is an alkali metal N-(2-hydroxyphenyl)methyl glycinate, especially an alkali metal N-(2-hydroxy-5-nonylphenyl)methyl-N-methyl glycinate.Type: GrantFiled: August 1, 1997Date of Patent: December 1, 1998Assignee: Air Products and Chemicals, Inc.Inventors: Robert Gabriel Petrella, John Joseph Koch, Thomas William Bodnar
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Patent number: 5844013Abstract: Hydrophilic polyurethane gel foams are obtainable from a polyurethane gel defined in the description, from a water-absorbing material and from a non-aqueous foaming agent and can be used in medicine, in particular for the management of deep wounds and wound cavities. Wound dressings are obtainable with a polyurethane sheet as backing and a polyurethane gel foam composed of a polyurethane gel defined in the description, of a water-absorbing material and of a non-aqueous foaming agent.Type: GrantFiled: May 30, 1995Date of Patent: December 1, 1998Assignee: Beiersdorf AGInventors: Jochen Kenndoff, Vadim Lenuck, Gunther Sachau
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Patent number: 5840779Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which result in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and at least one catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is less volatile than N,N-dimethylcyclohexylamine or the catalyst is a tertiary amine having at least one isocyanate-reactive functionality selected from the group consisting of --OH and --NH-- and the catalyst results in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol and especially during use of the foam samples at a temperature of at least about 54.degree. C.Type: GrantFiled: June 7, 1995Date of Patent: November 24, 1998Assignee: AlliedSignal Inc.Inventors: Robert Christian Parker, Timothy Rech Demmin
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Patent number: 5834579Abstract: Tertiary amines having carbonate and urethane groups and optionally hydroxyl groups are produced by reacting a) a polyhydric alcohol and b) a primary-tertiary diamine with c) a carbonic acid derivative selected from the group consisting of optionally cyclic carbonates, urea, phosgene and bis-chlorocarbonates of alcohols of the same type as those used as component a). This reaction may be carried out in one or two steps. The tertiary amines produced by this process are useful as catalysts, which may optionally be incorporated into an isocyanate-reactive material, in the isocyanate addition reaction for the production of polyurethane plastics. These tertiary amines are particularly useful for the production of foam backed plastic films.Type: GrantFiled: June 16, 1997Date of Patent: November 10, 1998Assignee: Bayer AktiengesellschaftInventors: Klaus Konig, Ulrich Liman, Josef Sanders
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Patent number: 5824711Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of the compound represented by the following formula I or II, or any blend of I and II.Type: GrantFiled: May 6, 1997Date of Patent: October 20, 1998Assignee: Air Products and Chemicals, Inc.Inventors: Michael John Kimock, Mark Leo Listemann
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Patent number: RE36233Abstract: An amine softening additive is useful in softening all-water blown flexible polyurethane foam to achieve low IFD valves while retaining the other commercially necessary properties of the foam. The additives are tertiary amine polyisocyanate catalysts which contain at least one contiguous three carbon chain and should be added to the foam system at about 0.1 to 2.0 parts per hundred of polyol.Type: GrantFiled: May 29, 1998Date of Patent: June 22, 1999Assignee: OSi Specialties, Inc.Inventors: Brian L. Hilker, Mark E. Harakal, Susan B. McVey
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Patent number: RE36358Abstract: The invention pertains to flame retardant polyurethane foams prepared by the reaction of a polyoxyalkylene polyether polyol with an organic polyisocyanate and a blowing agent wherein melamine is incorporated as the sole flame retardant compound. The amount of melamine may range from about 10 weight percent to about 55 weight percent of the total composition.Type: GrantFiled: July 16, 1996Date of Patent: October 26, 1999Assignee: BASF CorporationInventors: Egil Grinbergs, William W. Levis, Jr., Steven D. Gagnon