Organic Silicon Compound Contains An Ether Group Patents (Class 521/112)
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Publication number: 20120123005Abstract: The embodiments of the present invention provide for polyurethane foams that include renewable resources while keeping desired properties of the polyurethane product. For example, described herein, according to embodiments of the invention, are polyurethane foams that have a high concentration of renewable resources while retaining favorable airflow, tensile strength, tear resistance, elongation, indentation force deflection, and/or resilience. These foams may also posses improved yellowing resistance and improved water absorption rates.Type: ApplicationFiled: July 22, 2010Publication date: May 17, 2012Applicants: Dow Brasil Sudeste Industrial Ltda., Dow Global Technologies LLC, DOW BRAZIL S.A.Inventors: Bruno Cesar Motta, Marcos Franca, Vinicius Serves, Paul Cookson, Imran Munshi, Francois M. Casati
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Publication number: 20120101175Abstract: The present invention provides a novel silicone copolymer surfactant, methods for making the surfactant, a polyurethane foam-forming composition and a process for preparing polyurethane foams.Type: ApplicationFiled: August 7, 2008Publication date: April 26, 2012Inventors: Kenneth Lloyd Willoughby, David Davis, Peter Lo
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Publication number: 20120088856Abstract: The invention relates to a method for producing polyurethane foams using ingredients containing at least one expanding agent consisting of halogen-containing (fluorine-containing) olefins and at least a siloxane having formula (I).Type: ApplicationFiled: June 29, 2010Publication date: April 12, 2012Applicant: EVONIK GOLDSCHMIDT GMBHInventors: Martin Glos, Carsten Schiller, Christian Eilbracht
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Patent number: 8148441Abstract: A method for manufacturing a polishing pad made from a polyurethane resin foam having very uniform, fine cells therein and a polishing pad obtained by that method provides a polishing pad having better polishing characteristics (especially, in planarization) while providing improved dressability while maintaining the planarization characteristics and polishing speed of a conventional polishing pad. The polyurethane resin foam is a cured product obtained by reacting an isocyanate-terminated prepolymer with an aromatic polyamine chain extender having a melting point of 70° C. or lower, for example.Type: GrantFiled: February 27, 2006Date of Patent: April 3, 2012Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Masato Doura, Takeshi Fukuda, Kazuyuki Ogawa, Atsushi Kazuno, Hiroshi Seyanagi, Masahiko Nakamori, Takatoshi Yamada, Tetsuo Shimomura
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Patent number: 8133930Abstract: Flexible polyurethane foams are prepared by reacting a polyisocyanate with a high equivalent weight polyol. At least a portion of the high equivalent weight polyol is a polyester containing hydroxymethyl groups. The polyester is prepared in a multi-step process from animal or vegetable fats, by recovering the constitutent fatty acids, hydroformylating carbon-carbon double bonds in the fatty acids and reducing to form hydroxymethyl groups, and then forming a polyester by reaction with an initiator compound.Type: GrantFiled: April 23, 2004Date of Patent: March 13, 2012Assignee: Dow Global Technologies LLCInventors: Eugene Paul Wiltz, Jr., Zenon Lysenko, Fabio Aguirre, Aaron Sanders, John Tsavalas, David A. Babb, Alan K Schrock
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Publication number: 20110306694Abstract: The invention relates to compositions comprising linear siloxanes, comprising only one further organically modified group in addition to the Si-alkyl substitution in the siloxane chain, wherein said group is bonded to a terminal silicon atom, and to the use thereof for producing polyurethane cold foams.Type: ApplicationFiled: December 14, 2009Publication date: December 15, 2011Applicant: Evonik Goldschmidt GmbHInventors: Martin Glos, Frauke Henning, Mladen Vidakovic
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Patent number: 8063113Abstract: The present invention relates to polyurethane foam-forming composition containing polysilsesquioxanes that provide high resilience flexible polyurethane molded foams having improved foam dimensional stability.Type: GrantFiled: April 23, 2008Date of Patent: November 22, 2011Assignee: Momentive Performance Materials Inc.Inventors: Bright Dai, Lijun Feng, Paul Austin
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Patent number: 8044109Abstract: The present invention relates to polyurethane foam prepared from a polyurethane foam-forming reaction mixture possessing a silicone copolymer surfactant, methods for making the surfactant, and a process for preparing low density polyurethane foams.Type: GrantFiled: April 3, 2008Date of Patent: October 25, 2011Assignee: Momentive Performance Materials Inc.Inventors: Zhihong Gu, Lijun Feng, Wenkai Zhang, Paul Austin
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Patent number: 8034848Abstract: The subject matter of the present invention relates to a low-viscosity aqueous hot-cure flexible polyurethane foam stabilizer solution which can be used in the production of hot-cure flexible polyurethane foams, wherein the low-viscosity aqueous hot-cure flexible polyurethane foam stabilizer solution comprises the following components: ?40% to ?70% by weight of polyethersiloxane, ?0.5% to ?20% by weight of organic surfactant, ?10% by weight of water, ?0% by weight of organic solvent additions, in which the polyethersiloxane has the following formula (I) —R1—Si(CH3)2O—[Si(CH3)(OSi(CH3)2R0)O—]u—[Si(OSi(CH3)2R0)2O—]v—[Si(CH3)2O—]w—[SiCH3R2O—]x—[SiCH3R3O—]y—[SiCH3R4O]z—[SiR3R4O]t—Si(CH3)2—R5 (I).Type: GrantFiled: August 16, 2007Date of Patent: October 11, 2011Assignee: Evonik Goldschmidt GmbHInventors: Ruediger Landers, Berend-Jan De Gans
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Publication number: 20100298455Abstract: The present invention relates to compositions containing polyether-siloxane copolymers which are based on branched SiH-functional siloxanes, where at least one of the polyether-siloxane copolymers has a radical —OR8 where R8=hydrogen or an alkyl radical having from 1 to 10 carbon atoms which is bound to a silicon atom, a process for producing polyurethane foam in which these compositions are used as foam stabilizers, polyurethane foams containing these compositions and the use of these polyurethane foams.Type: ApplicationFiled: May 20, 2010Publication date: November 25, 2010Applicant: EVONIK GOLDSCHMIDT GMBHInventors: Frauke Henning, Carsten Schiller, Horst Dudzik, Eva Emmrich, Annegret Terheiden, Martin Glos, Wilfried Knott, Christian Eilbracht
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Patent number: 7838566Abstract: The invention relates to a process for the preparation of polyurethane cold cure foams by reacting a mixture of highly reactive polyols, which usually have an average molecular weight of from about 4800 to 6500 g/mol and at least 70% of primary hydroxyl groups and optionally contain fillers, and polyfunctional isocyanates, amine activators, crosslinking agents, tin catalysts, blowing agents and stabilizers, wherein the stabilizers used are compounds of the general formula (1) the proportion of siloxanes with N>9 being higher than 10% by weight and that with N>12 being equal to or higher than 5% by weight.Type: GrantFiled: October 17, 2006Date of Patent: November 23, 2010Assignee: Evonik Goldschmidt GmbHInventors: Martin Glos, Harald Modro, Mladen Vidakovic
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Publication number: 20100286295Abstract: Silicone surfactants for use in polyurethane foams prepared using natural oils based polyols comprise silicone copolymers possessing alkyl and polyalkylene oxide polyether pendants. The silicone surfactants yield foams having improved physical properties as compared to other surfactant compositions when used in vegetable oil based urethane foams.Type: ApplicationFiled: May 11, 2009Publication date: November 11, 2010Inventors: Ladislau Heisler, Gregory A. Pickrell, Lee F. Lawler
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Patent number: 7825166Abstract: To provide a flexible polyurethane foam having good vibration characteristics and suitable particularly for a seat for an automobile. A flexible polyurethane foam obtained by reacting a high molecular weight polyoxyalkylene polyol or a polymer-dispersed polyol containing fine polymer particles in the high molecular weight polyoxyalkylene polyol, with a polyisocyanate compound, in the presence of a catalyst, a blowing agent and a foam stabilizer, characterized in that an amino-modified silicone (F) having a silicon atom and a nitrogen atom in its molecule is used in an amount of from 0.00001 to 1 part by mass per 100 parts by mass of all active hydrogen compounds.Type: GrantFiled: November 26, 2007Date of Patent: November 2, 2010Assignee: Asahi Glass Company, LimitedInventors: Takayuki Sasaki, Takashi Ito, Yoshinori Toyota, Naohiro Kumagai
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Patent number: 7754778Abstract: The invention provides linear polydimethylsiloxane-polyoxyalkylene block copolymers containing Si—C groups and carboxylic ester groups and having repeating (A1BA2B) units where A1 and A2 are two different polydimethylsiloxane units of the general formula (I) with a number of Si atoms N=(n+2) of 15?N?30 and NA1?NA2 and B is a unit of the formula (II) —CH2—CH2—(CH2)a—CO[O—CH2—CH(R)]c—O-[D-O]e—[—CH2—CH(R)—O]d—OC—(CH2)b—CH2—CH2— (II) where R independently at each occurrence is H, —CH3 or —C2H5, a and b independently of one another are 0 to 20, c and d independently of one another are values?1, e is 0 or 1 and D is a hydrocarbon radical having 2 to 10 C atoms, the overall molar weight of the unit of the formula II being from 600 to 10 000 g/mol, with the proviso that the average mixed molar weight of the polydimethylsiloxane units (A1+A2) is from >1665 to <1998 g/mol and the fraction of [O—CH2—CH(R)] with R?H is >0% to ?50% by weight, based on the overall weight of [O—CH2—CH(R)] in B, a process for pType: GrantFiled: July 25, 2008Date of Patent: July 13, 2010Assignee: Evonik Goldschmidt GmbHInventors: Wilfried Knott, Oliver Thum, Klaus-Dieter Klein, Dagmar Windbiel, Claudia Hierath
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Patent number: 7718102Abstract: Foam for making pads and belts with controlled, reproducible microcellular structure and method of making such foam in a fast and efficient manner. Under constant pressure and temperature, a prepolymer is mixed with the nucleation surfactant in a tank in the presence of a frothing agent metered into the tank by way of a dip tube or sparge. The nitrogen gas is sheared into small bubbles and is drawn off from the headspace of the tank creating a continuous flow of nitrogen. The pressure of the tank may vary from any absolute pressure down to near complete vacuum, thereby all but eliminating the pressure requirement. The froth of the present invention has a more consistent cell structure and increased cell count.Type: GrantFiled: October 7, 2002Date of Patent: May 18, 2010Assignee: Praxair S.T. Technology, Inc.Inventors: Brian Lombardo, Jeffrey P. Otto
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Publication number: 20100113633Abstract: Silicone-polyether block copolymers prepared by organomodification of branched polysiloxanes having terminal and/or lateral SiH functions or linear polysiloxanes having lateral and/or terminal SiH functions by means of polyethers or polyether mixtures, characterized in that the polyethers used have a polydispersity Mw/Mn in the range from 1.0 to 1.5 and/or ratios Mn/MWIN and Mw/MWIN in the range from 0.7 to 1.3, their preparation and use and also polymer articles produced therewith.Type: ApplicationFiled: October 26, 2009Publication date: May 6, 2010Inventors: Frauke Henning, Wilfried Knott, Frank Schubert, Roland Hubel, Christian Eilbracht
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Publication number: 20100071849Abstract: Prepolymers having more than one alkoxysilyl function per chain end reactive towards epoxide groups as a constituent of curable compositions, and their use for producing adhesive-bonding and coating compositions, which may also be foamable, and also polymeric materials produced therefrom.Type: ApplicationFiled: September 17, 2009Publication date: March 25, 2010Inventors: Wilfried Knott, Frank Schubert, Martin Glos, Carsten Schiller, Matthias Naumann
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Patent number: 7671103Abstract: The invention relates to the use of compounds of the general formula (VII) as stabilizers in the preparation of polyurethane foams.Type: GrantFiled: January 7, 2005Date of Patent: March 2, 2010Assignee: Goldschmidt AGInventors: Christian Eilbracht, Manfred Klincke, Isabella Ulrich-Brehm
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Patent number: 7612158Abstract: The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.Type: GrantFiled: July 10, 2006Date of Patent: November 3, 2009Assignee: Goldschmidt AGInventors: Georg Burkhart, Juergen Droese, Horst Dudzik, Klaus-Dieter Klein, Wilfried Knott, Volker Moehring
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Publication number: 20090253817Abstract: The present invention relates to polyurethane foam prepared from a polyurethane foam-forming reaction mixture possessing a silicone copolymer surfactant, methods for making the surfactant, and a process for preparing low density polyurethane foams.Type: ApplicationFiled: April 3, 2008Publication date: October 8, 2009Inventors: Zhihong Gu, Lijun Feng, Wenkai Zhang, Paul Austin
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Publication number: 20090030097Abstract: The invention provides linear polydimethylsiloxane-polyoxyalkylene block copolymers containing Si—C groups and carboxylic ester groups and having repeating (A1BA2B) units where A1 and A2 are two different polydimethylsiloxane units of the general formula (I) with a number of Si atoms N=(n+2) of 15?N?30 and NA1?NA2 and B is a unit of the formula (II) —CH2—CH2—(CH2)a—CO[O—CH2—CH(R)]c—O-[D-O]e—[—CH2—CH(R)—O]d—OC—(CH2)b—CH2—CH2— (II) where R independently at each occurrence is H, —CH3 or —C2H5, a and b independently of one another are 0 to 20, c and d independently of one another are values ?1, e is 0 or 1 and D is a hydrocarbon radical having 2 to 10 C atoms, the overall molar weight of the unit of the formula II being from 600 to 10000 g/mol, with the proviso that the average mixed molar weight of the polydimethylsiloxane units (A1+A2) is from >1665 to <1998 g/mol and the fraction of [O—CH2—CH(R)] with R?H is >0% to ?50% by weight, based on the overall weight of [O—CH2—CH(R)] in B, a process foType: ApplicationFiled: July 25, 2008Publication date: January 29, 2009Inventors: Wilfried Knott, Oliver Thum, Klaus-Dieter Klein, Dagmar Windbiel, Claudia Hierath
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Patent number: 7393879Abstract: A method for producing a novel silicone foam by reaction of a polyisocyanate with a silicone oligomer having a plurality of functional end groups with active hydrogens, optionally in the presence of fire-retardants, under foam forming conditions which creates a new silicone foam for use in items such as residential upholstered furniture industry, seat cushions and bedding etc., and specifically for use in applications that require, high resilience and fire-retardant properties such as aircraft and surface transportation seat cushioning, military and shipboard mattresses etc.Type: GrantFiled: June 6, 2002Date of Patent: July 1, 2008Assignee: Chestnut Ridge Foam, Inc.Inventors: Jiri E. Kresta, David Munoz Rojas, Ramon Moliner, Chandrasiri Jayakody, Dan Myers
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Patent number: 7378454Abstract: A polyurethane composition containing solid beads dispersed therein, is formed of a microcellular polyurethane foam, and the composition has a storage modulus of elasticity at 40° C. of 270 MPa or more as measured by means of a dynamic elasticity measuring device. Another polyurethane composition of this invention contains solid beads dispersed therein, that are capable of swelling with or are soluble in an aqueous medium. The former composition has excellent flattening capability, and the latter composition can provide a polished surface which combines good flatness and good uniformity and can also reduce scratches on the surface.Type: GrantFiled: April 4, 2002Date of Patent: May 27, 2008Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Takashi Masui, Masahiko Nakamori, Takatoshi Yamada, Koichi Ono, Kazuyuki Ogawa, Atsushi Kazuno, Hiroshi Seyanagi
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Patent number: 7285578Abstract: A water-in-oil emulsion composition for forming a silicone elastomer porous material contains a liquid silicone rubber material which forms a silicone elastomer upon curing, a silicone oil material which has a surface activation function, and water.Type: GrantFiled: November 12, 2004Date of Patent: October 23, 2007Assignee: Nitto Kogyo Co., Ltd.Inventors: Naka Hirayama, Atsushi Ikeda
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Patent number: 7268169Abstract: A substantially closed-cell silicone elastomer porous body includes cells with diameters of 50 ?m or less, which occupy 50% or more of all the cells, and has a closed cell rate of 60% or more.Type: GrantFiled: November 12, 2004Date of Patent: September 11, 2007Assignee: Nitto Kogyo Co., Ltd.Inventors: Naka Hirayma, Atsushi Ikeda
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Patent number: 7205338Abstract: Provided is a coating liquid for forming a porous film having desirably controlled thickness and having excellent dielectric and mechanical properties, using the conventional semiconductor process. Specifically, provided is a composition for forming a porous film comprising a condensation product and an organic solvent wherein the condensation product is obtained by hydrolysis and condensation, at presence of a basic catalyst, of one or more silane compounds represented by formula (1): R1kSi(OR2)4-k, and one or more crosslinking agents represented by formula (2): {Xj(Y)3-jSi-(L)m-}nMZ4-n. Moreover, a method for manufacturing a porous film comprising steps of applying said composition so as to form a film, drying the film and heating the dried film so as to hardent the film, and others are provided.Type: GrantFiled: March 9, 2004Date of Patent: April 17, 2007Assignees: Shin-Etsu Chemical Co., Ltd., Matsushita Electric Industrial Co., Ltd.Inventors: Tsutomu Ogihara, Fujio Yagihashi, Hideo Nakagawa, Masaru Sasago
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Patent number: 7183330Abstract: A method for making a rigid polyurethane foam by reacting a polyisocyanate and a polyol in the presence of a urethane catalyst, a blowing agent and a silicone surfactant characterized by employing a blowing agent comprising a C4 or C5 hydrocarbon, or mixtures thereof, with an average molecular weight of ?72 g/mole and a boiling point in the range of 27.8 to 50° C., and a silicone surfactant comprising a polyether-polysiloxane copolymer represented by the following formula: (CH3)3—Si—O—(Si(CH3)2—O)x—(Si(CH3)(R)O)y—Si(CH3)3 where R=(CH2)3—O—(—CH2—CH2—O)a—(CH2—CH(CH3)—O)b—R?, and where R? is H, (CH2)zCH3, or C(O)CH3; x+y+2 is 60–130; x/y is 5–14; z is 0–4; the total surfactant molecular weight, based on the formula, is 7000–30,000 g/mole, the wt % siloxane in the surfactant is 32–70 wt %, the blend average molecular weight (BAMW) of the polyether portion is 450–1000 g/mole, and the mole % of ethylene oxide in the polyether portion is 70–100 mole %.Type: GrantFiled: December 15, 2003Date of Patent: February 27, 2007Assignee: Air Products and Chemicals, Inc.Inventors: Wayne Robert Furlan, Mark Leo Listemann, Joan Sudbury-Holtschlag, Thomas John Markley, Gary Dale Andrew
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Patent number: 7141612Abstract: The invention relates to stabilized gas-in-liquid dispersions or foams containing a liquid continuous phase, a dispersed gas phase, and surface-modified fullerenes, dendrimers, organic polymeric microspheres, or combinations thereof.Type: GrantFiled: December 31, 2002Date of Patent: November 28, 2006Assignee: 3M Innovative Properties CompanyInventors: Jimmie R. Baran, Jr., James S. Stefely, Stephen W. Stein
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Patent number: 7098255Abstract: A process for producing a finely cellular polyurethane foam by mixing a first ingredient comprising an isocyanate compound and a second ingredient comprising a compound containing an active hydrogen group, characterized by comprising adding a nonionic silicone surfactant containing no hydroxyl group to at least one of the first ingredient and the second ingredient in an amount of 0.1 to 5 wt %, excluding 5 wt %, based on the total amount of the first ingredient and the second ingredient, subsequently agitating the surfactant containing ingredient together with an unreactive gas, which has no reactivity to isocyanate group or active hydrogen group, to disperse the unreactive gas as fine bubbles to prepare a bubble dispersion and then mixing the bubble dispersion with the remaining ingredient to cure the resultant mixture and forming finely cellular structure into the resultant polyurethane foam by the fine bubbles of the bubble dispersion.Type: GrantFiled: June 30, 2004Date of Patent: August 29, 2006Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Hiroshi Seyanagi, Kaoru Inoue, Kazuyuki Ogawa, Takashi Masui, Koichi Ono
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Patent number: 6921779Abstract: Rigid polyurethane blowing agent enhancers, methods for using them, and the products produced by these methods are disclosed. The enhancers are low molecular weight alcohols and/or ethers that assist the action of blowing agents comprising a hydrohalocarbon compound.Type: GrantFiled: November 3, 2003Date of Patent: July 26, 2005Assignee: Air Products and Chemicals, Inc.Inventor: John William Miller
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Patent number: 6890966Abstract: In a process for the production of a lightweight cold urethane wherein raw materials are injected into a mold in one shot, diethanolamine is added in an amount of 0.1 to 2.0 parts by weight per 100 parts by weight of the polyol. When principal raw materials including a polyol and an isocyanate, and an auxiliary ingredient mixture prepared by previously mixing auxiliary ingredients other than the polyol and the isocyanate, are injected into a mold from separate storage vessels, a water-soluble silicone foam stabilizer is added to the auxiliary ingredient mixture.Type: GrantFiled: May 10, 2002Date of Patent: May 10, 2005Assignee: Suzuki Motor CorporationInventors: Masahiko Ando, Eiji Matsumoto
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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: 6861453Abstract: A process for producing a urethane-modified polyisocyanurate foam having excellent characteristics such as flame retardancy, heat resistance and low smoking property, and further having improved initial adhesion, particularly adhesion after a relatively long period of time, to a facing material particularly a flexible facing material, by using water as a blowing agent, is provided. A polyisocyanate compound component, a polyol component, water and a morpholine compound are reacted in the presence of a trimerization catalyst for isocyanates.Type: GrantFiled: March 14, 2002Date of Patent: March 1, 2005Assignee: Hodogaya Chemical Co., Ltd.Inventors: Tsuyoshi Sato, Tsutomu Nakamura
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Patent number: 6841586Abstract: An ester polyurethane foam is prepared by reacting a mixture of one or more polyester polyols with one or more isocyanates and one or more silicone surfactants in the presence of a blowing agent, such as water, and other additives, such as catalysts. The cured foam is chemically treated in a caustic solution and is then felted (compressed under heat and pressure) to form a hydrophilic ester polyurethane foam having a water absorption rate of at least 30 pounds of water per square foot per minute (1.44 kPa/min). The foam also has greater water holding capacity and wet strength than cellulose.Type: GrantFiled: December 23, 2003Date of Patent: January 11, 2005Assignee: Foamex, L.P.Inventors: Sharon A. Free, Charles V. Rose
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Patent number: 6818674Abstract: There are disclosed an elastic member which comprises (A) polyurethane foam obtained by agitationally mixing a foaming agent, a foam stabiizer and a urethane prepolymer synthesized from a polyol and a polyisocyanate in the presence of a modified silicone, or (B) polyurethane foam obtained by agitationally mixing a polyol, a polyisocyanate, a modified silicone oil bearing a functional group reactive with a polyisocyanate, a foaming agent and a foam stabiizer comprising a polyether modified silicone containing 50 to 100% by weight of a polyoxyethylene unit in the polyether moiety; image formation equipment equipped with the above elastic member; and a toner supply roller which is composed of a foamed elastic member mounted on a developing apparatus and which has a compression spring constant in the range of 0.25 to 5.0 N/mm and a surface friction resistance in the range of 0.4 to 1.2 N.Type: GrantFiled: November 6, 2001Date of Patent: November 16, 2004Assignee: Bridgestone CorporationInventors: Junji Sakata, Hirotaka Yamazaki
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Patent number: 6787580Abstract: Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proximate to large cells. The resulting multimodal foams have particular utility as thermal insulating materials.Type: GrantFiled: September 28, 2001Date of Patent: September 7, 2004Assignee: Dow Global Technologies Inc.Inventors: Yohannes Chonde, Daniel Imeokparia, John B. Horstman, Robert A. Kirchhoff, Kyung W. Suh
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Patent number: 6777455Abstract: A process for producing a finely cellular polyurethane foam by mixing a first ingredient comprising an isocyanate compound and a second ingredient comprising a compound containing an active hydrogen group, characterized by comprising adding a nonionic silicone surfactant containing no hydroxyl group to at least one of the first ingredient and the second ingredient in an amount of 0.1 to 5 wt %, excluding 5 wt %, based on the total amount of the first ingredient and the second ingredient, subsequently agitating the surfactant containing ingredient together with an unreactive gas, which has no reactivity to isocyanate group or active hydrogen group, to disperse the unreactive gas as fine bubbles to prepare a bubble dispersion and then mixing the bubble dispersion with the remaining ingredient to cure the resultant mixture and forming finely cellular structure into the resultant polyurethane foam by the fine bubbles of the bubble dispersion.Type: GrantFiled: April 25, 2002Date of Patent: August 17, 2004Assignees: Toyo Tire & Rubber Co., Ltd., Toyo Boseki Kabushiki KaishaInventors: Hiroshi Seyanagi, Kaoru Inoue, Kazuyuki Ogawa, Takashi Masui, Koichi Ono
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Patent number: 6756416Abstract: An ester polyurethane foam is prepared by reacting a mixture of one or more polyester polyols with one or more isocyanates and one or more silicone surfactants in the presence of a blowing agent, such as water, and other additives, such as catalysts. The cured foam is chemically treated in a caustic solution to form a hydrophilic ester polyurethane foam having a water absorption rate of at least 20 pounds of water per square foot per minute, preferably at least 25 pounds of water per square foot per minute. The foam also has greater water holding capacity and wet strength than cellulose.Type: GrantFiled: February 12, 2002Date of Patent: June 29, 2004Assignee: Foamex L.P.Inventors: Sharon A. Free, Vincenzo A. Bonaddio, Andrew M. Thompson, Joseph W. Lovette
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Patent number: 6756415Abstract: A flexible polyurethane foam having a core impact resilience of at most 40%, of which the half-width of the resonance transmission peak in the resonance curve is at most 1 Hz.Type: GrantFiled: November 25, 2002Date of Patent: June 29, 2004Assignee: Asahi Glass Company, LimitedInventors: Yuuji Kimura, Takayuki Sasaki, Etsuko Akagi
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Patent number: 6747068Abstract: The invention is a hydrophobic polyurethane foam prepared from a conventional PO/EO polyether polyol, a graft polyol and a hydrophobicity inducing surfactant. The foam is sufficiently hydrophobic to pass a stringent water impermeability test.Type: GrantFiled: February 15, 2001Date of Patent: June 8, 2004Assignee: Wm. T. Burnett & Co.Inventor: David J. Kelly
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Patent number: 6734219Abstract: A method for producing a flexible polyurethane foam in an open state, which comprises reacting a polyol with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, wherein as the polyol, a polyol having a hydroxyl value of at most 15 mgKOH/g is used.Type: GrantFiled: November 27, 2002Date of Patent: May 11, 2004Assignee: Asahi Glass Company, LimitedInventors: Hiroshi Wada, Katsuji Kuribayashi, Takayuki Sasaki, Yuuji Kimura, Hisakazu Harada, Etsuko Akagi
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Patent number: 6653361Abstract: A polyurethane foam or elastomer comprises an organic polyisocyanate component, an active hydrogen-containing component reactive with the polyisocyanate component, wherein the viscosity of this component is less than about 500 cP at room temperature, a catalyst component, a surfactant, and a flame retarding composition. The components may be low VOC. A preferred flame retarding composition comprises an antimony-based compound, a halogenated, active hydrogen-containing component reactive with the polyisocyanate component, and a halogenated flame-retarding agent. Such polyurethanes are useful as gaskets, seals, padding, in automotive applications, and the like.Type: GrantFiled: April 25, 2002Date of Patent: November 25, 2003Assignee: World Properties, Inc.Inventors: Amy L. Gilman, Scott S. Simpson, Petr Svoboda
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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: 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: 6617365Abstract: The invention relates to the use of silicone-polyether copolymers of the formula I as surface-active substances in the production of polyurethane foams.Type: GrantFiled: November 29, 2000Date of Patent: September 9, 2003Assignee: Goldschmidt AGInventors: Georg Burkhart, Georg Feldmann-Krane, Ingo Fleute-Schlachter, Andreas Weier
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Patent number: 6572791Abstract: There is disclosed an elastic member constituted of polyurethane foam obtained by agitationally mixing with water, a urethane prepolymer synthesized from a polyol and a polyisocyanate, characterized by simultaneously employing as polyols, a (A) polymer polyol synthesized from a polyether polyol as a basis, comprising at least 70% by weight of oxypropylene moiety; and a (B) hydrophilic polyether polyol comprising at least 50% by weight of oxyethylene moiety, or simultaneously employing as polyols, the component (A), the component (B) and a (C) polyether polyol comprising at least 70% by weight of oxypropylene moiety. The above elastic member is simultaneously imparted with excellent characteristics such as low hardness, fine cells, low residual compressive strain, high strength and the like. The polyurethane foam which constitutes the elastic member can be produced by free foaming.Type: GrantFiled: December 7, 2000Date of Patent: June 3, 2003Assignee: Bridgestone CorporationInventors: Junji Sakata, Hirotaka Yamazaki, Tadashi Nakajima, Takahiro Kawagoe
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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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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: 6518324Abstract: Polymer foams containing nanoclay are provided, the foams having improved properties such as thermal insulation values.Type: GrantFiled: November 28, 2000Date of Patent: February 11, 2003Assignee: Atofina Chemicals, Inc.Inventors: Jiri E. Kresta, Jinhuang Wu, Richard M. Crooker
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Patent number: 6506810Abstract: The invention relates to the use of mixtures of organofunctionally modified polysiloxanes with branched alcohols in the production of flexible polyurethane foams.Type: GrantFiled: November 26, 2001Date of Patent: January 14, 2003Assignee: Goldschmidt AGInventors: Rob Borgogelli, Oliver Eyrisch