N=c=x Reactant Having At Least Two C-nh-c(=x)- Groups, E.g., Prepolymers, Etc. Patents (Class 521/159)
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Patent number: 8410019Abstract: A modifying agent for a coating composition for producing a protective layer in a thermosensitive recording medium, wherein the modifying agent contains a polyurethane resin (A) having the structure represented by the following general formula (I) and a hydrophilic group, and an aqueous medium. (in the general formula (I), R1 and R2 represent individually an alkyl group, and m and n represent individually an integer of 1 or greater.Type: GrantFiled: February 8, 2007Date of Patent: April 2, 2013Assignee: DIC CorporationInventor: Masato Inoue
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Patent number: 8394868Abstract: A polyol prepolymer having at least one urethane group is disclosed. The polyol preopolymer is a reaction product of at least one isocyanate and a polyol blend, where the polyol blend includes at least one conventional petroleum-based polyol and at least one natural oil based polyol. The polyol prepolymer may be used in producing flexible polyurethane foams.Type: GrantFiled: June 11, 2009Date of Patent: March 12, 2013Assignee: Dow Global Technologies LLCInventors: Francois M. Casati, Imran Munshi
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Patent number: 8389775Abstract: The invention relates to a process for preparing polyether alcohols, which comprises the steps a) reaction of an unsaturated natural oil or fat with a mixture of carbon monoxide and hydrogen, b) reaction of the mixture from step a) with hydrogen, c) reaction of the product from step b) with an alkylene oxide in the presence of a catalyst.Type: GrantFiled: January 26, 2009Date of Patent: March 5, 2013Assignee: BASF SEInventors: Darijo Mijolovic, Andrea Haunert, Andreas Kunst, Stephan Bauer, Qiang Miao, Berend Eling
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Patent number: 8372892Abstract: Polyurethane foams are made and attached to a substrate having an open cavity, but reacting prepolymer and polyol components in the presence of certain carbamate blowing agents. This process allows for very fast curing, good quality, adherent foamy to be produced on, for example, vehicle parts and assemblies, for acoustical or vibration dampening and for structural reinforcement.Type: GrantFiled: March 7, 2005Date of Patent: February 12, 2013Assignee: Dow Global Technologies LLCInventors: Huzeir Lekovic, Ali El-Khatib, Frank Vincent Billotto, Rifat Tabakovic, Ali Ozasahin
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Patent number: 8349973Abstract: A thermosetting epoxy resin composition can be cured rapidly at low temperature with an aluminum chelate-based latent curing agent without the use of a cycloaliphatic epoxy compound. The thermosetting epoxy resin composition includes an aluminum chelate-based latent curing agent, a silanol compound of the formula (A), and a glycidyl ether-type epoxy resin: (Ar)mSi(OH)n??(A) wherein Ar is an optionally substituted aryl group, and m is 2 or 3, provided that the sum of m and n is 4. Examples of the silanol compound of the formula (A) include triphenylsilanol, diphenylsilanol, and the like.Type: GrantFiled: October 22, 2008Date of Patent: January 8, 2013Assignee: Sony Chemical & Information Device CorporationInventor: Kazunobu Kamiya
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Patent number: 8318823Abstract: The invention relates to a polyether polyol composition for the preparation of polyurethane foams, comprising: (a) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 65 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 40 to 80%, based on the total number of primary and secondary hydroxyl groups, having a PO content of from 45 to 55% by weight and an EO content of from 40 to 55% by weight; (b) a dispersion of a polymer in a polyether polyol, wherein the OH number of the dispersion is within a range of from 10 to 30 mg of KOH/g and the polyether polyol has a hydroxyl functionality of 3, a proportion of primary hydroxyl groups within a range of from 70 to 90%, based on the total number of primary and secondary hydroxyl groups, a PO content of from 70 to 90% by weight and an EO content of from 10 to 30% by weight; (c) a polyether polyol having a hydroxyl functionality of 3, an OH number within a range of from 220 to 290 mg of KOH/g aType: GrantFiled: December 9, 2008Date of Patent: November 27, 2012Assignee: Bayer MaterialScience AGInventors: Sebastien Triouleyre, Sven Meyer-Ahrens, Alice Mosbach-Rosenberger
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Patent number: 8318825Abstract: The invention provides a polishing pad by which optical materials such as lenses, reflecting mirrors etc., or materials requiring a high degree of surface planarity, as in the polishing of silicone wafers, glass substrates or aluminum substrates for hard disks, or general metal polishing, can be flattened with stability and high polishing efficiency. The invention also provides a polishing pad for semiconductor wafers, which is superior in planarizing characteristic, is free from scratches and can be produced at low cost. There is provided a polishing pad which is free from dechucking error so that neither damage to wafers nor decrease in operating efficiency occurs. There is provided a polishing pad which is satisfactory in planarity, within wafer uniformity, and polishing rate and produces less change in polishing rate. There is provided a polishing pad which can make planarity improvement and scratch decrease compatible.Type: GrantFiled: August 24, 2006Date of Patent: November 27, 2012Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Tetsuo Shimomura, Masahiko Nakamori, Takatoshi Yamada, Takashi Masui, Shigeru Komai, Koichi Ono, Kazuyuki Ogawa, Atsushi Kazuno, Tsuyoshi Kimura
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Publication number: 20120289621Abstract: The invention relates to a method for functionalising a thermoset, crosslinked isocyanate-based polymeric solid material which is made of isocyanate and isocyanate reactive components, at least one of which comprises an anchor component which has at least one anchor group. The anchor groups on the solid material are formed by terminal alkene and/or alkyne groups. To functionalise this polymeric solid material it is brought in contact with a solution which contains at least one functional component. This functional component comprises at least one thiol group and is allowed to bind covalently to the polymeric solid material by a free-radical addition reaction between the thiol groups on the functional component and the terminal alkene and/or alkyne anchor groups on the undissolved solid material. An effective functionalisation of the polymeric material can thus be achieved notwithstanding the heterogeneous reaction conditions.Type: ApplicationFiled: May 14, 2012Publication date: November 15, 2012Applicant: RECTICELInventors: Laura JONCKHEERE, Filip DU PREZ, Thu NGUYEN
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Patent number: 8304467Abstract: A polishing pad generates very few scratches on a surface of a polishing object, and is excellent in planarization property. The polishing pad has a high polishing rate and is excellent in planarization property. The polishing pad grooves become very little clogged with abrasive grains or polishing swarf during polishing and, even when continuously used for a long period of time, the polishing rate is scarcely reduced.Type: GrantFiled: May 10, 2006Date of Patent: November 6, 2012Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Atsushi Kazuno, Kazuyuki Ogawa, Masahiko Nakamori, Takatoshi Yamada, Tetsuo Shimomura
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Patent number: 8288448Abstract: The polishing pad is suitable for planarizing at least one of semiconductor, optical and magnetic substrates. The polishing pad includes a cast polyurethane polymeric material formed with an isocyanate-terminated reaction product formed from a prepolymer reaction of a prepolymer polyol and a polyfunctional isocyanate. The isocyanate-terminated reaction product has 4.5 to 8.7 weight percent unreacted NCO; and the isocyanate-terminated reaction product is cured with a curative agent selected from the group comprising curative polyamines, curative polyols, curative alcoholamines and mixtures thereof. The polishing pad contains at least 0.1 volume percent filler or porosity.Type: GrantFiled: June 4, 2008Date of Patent: October 16, 2012Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventor: Mary Jo Kulp
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Patent number: 8263100Abstract: A method of producing a hydrophilic polyurethane foam structure containing a silver salt, chosen from the group of silver sulphate, silver citrate, silver acetate, silver carbonate, silver lactate and silver phosphate, or a mixture of these salts includes the steps of (a) providing a water phase containing a surfactant, and at least one silver salt, wherein the at least one silver salt is dispersed in the water phase; (b) providing a isocyanate-terminated polyether having functionality of more than (2); (c) mixing the water phase and the isocyanate-terminated polyether, immediately transferring the resulting mixture to a mould whereby a foam structure is obtained; and (d) drying the foam structure until it has a moisture content of at most 10% (wt). The hydrophilic polyurethane foam structure produced by the method and a wound dressing containing the foam structure are also described.Type: GrantFiled: February 13, 2008Date of Patent: September 11, 2012Assignee: Mölnlycke Health Care ABInventors: Stefan Areskoug, Ulf Johannison, Malin Prydz
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Patent number: 8236866Abstract: A high resilience (HR) polyurethane foam comprising the reaction product of (1) at least one polyisocyanate comprising at least about 5 weight percent of at least one methylene diphenyl diisocyanate isomer, derivative or a combination thereof and (2) an admixture of at least one natural oil based polyol and at least one additional polyol which is not a natural oil based polyol, wherein the admixture comprises at least about 10 weight percent natural oil based polyol and at least about 40 weight percent additional polyol having an equivalent weight of at least about 1700 Daltons; and the foam has a resiliency indicated by a ball rebound of at least 40 percent as measured according to the procedures of ASTM D 3574, Test H.Type: GrantFiled: May 7, 2008Date of Patent: August 7, 2012Assignee: Dow Global Technologies LLCInventors: Francois M. Casati, Jean-Marie Sonney
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Patent number: 8236868Abstract: Polyurethane elastomer foams can be prepared by mixing an isocyanate-terminated prepolymer obtained by reaction of a polyol with 3,3?-dimethylbiphenyl-4,4?-diisocyanate, with a foaming agent comprising a mixture of water, a low-molecular weight glycol having a molecular weight of 48-200, and a high-molecular weight glycol having a number average molecular weight Mn of 1000-3000 under stirring to conduct foaming reaction. The polyurethane elastomer foams so produced can have a high durability, particularly under a high load, even though a low-cost, easy-to-handle diisocyanate compound is used.Type: GrantFiled: June 25, 2007Date of Patent: August 7, 2012Assignee: Unimatec Co., Ltd.Inventors: Tetsuya Watanabe, Takashi Chiba, Hiroyuki Otani
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Publication number: 20120196946Abstract: Flexible polyurethane foam having a density of 25-70 kg/m3 and a compression load deflection of 5-15 kPa. Process for making a flexible polyurethane foam and the use as plant growth medium and in green roofs and green walls.Type: ApplicationFiled: September 14, 2010Publication date: August 2, 2012Applicant: Huntsman International LLCInventors: Johan Antoine Stefaan Macken, Herman Eugene Germain Moureau, Steven Ramsdonck, Annelies Vandevelde
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Patent number: 8232364Abstract: The present invention relates to improved gel masses prepared from a reaction mixture of NCO prepolymers and selected compounds containing groups reactive towards isocyanate groups. This invention is also directed to a process for the production of these gel masses and to the production of pressure-distributing elements comprising these gel masses.Type: GrantFiled: September 7, 2006Date of Patent: July 31, 2012Assignee: TechnoGel GmbHInventors: Andreas Hoffman, Heinz-Dieter Ebert, Matteo Mason
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Publication number: 20120184639Abstract: The present invention relates to a process for the production of polyurethane foams from A1 compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 400 to 15,000, A2 optionally compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 62 to 399, A3 water and/or physical foaming agents, A4 optionally auxiliary substances and additives, A5 compounds having at least one semicarbazide group, and B di- or poly-isocyanates which yields polyurethane foams with reduced formaldehyde emission and wherein the activity of the raw material mixture is not substantially affected and wherein the mechanical properties of the resulting foam (in particular compression set and ageing behaviour under humid conditions) are not adversely affected.Type: ApplicationFiled: September 18, 2010Publication date: July 19, 2012Applicant: Bayer MaterialScience AGInventors: Peter Haas, Gundolf Jacobs, Sven Meyer-Ahrens
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Patent number: 8217093Abstract: A two-component polyurethane/vinyl ester hybrid foam system is formed of a polyol component (A), which contains at least one polyol, a catalyst for the reaction of the polyol with the polyisocyanate, at least one polymerizable vinyl monomer and water or a blowing agent on the basis of a compressed or liquefied gas as foam-forming agent, and a polyisocyanate component (B), which contains at least one polyisocyanate and a catalyst for the polymerization of the vinyl monomer, and is designed for use as a flame retardant material and material for filling openings, cable and pipe bushings in walls, floors and/or of buildings for the purpose of fire protection.Type: GrantFiled: November 28, 2007Date of Patent: July 10, 2012Assignee: Hilti AktiengesellschaftInventor: Arne Reinheimer
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Patent number: 8217092Abstract: A multicomponent polyurethane/vinyl ester hybrid foam system for forming a gradient foam with soft and rigid foam regions, with a polyol component (A), a polyisocyanate component (B), and a component (C), which contains a catalyst for the polymerization of the vinyl monomer, with the polyol component (A) containing, as vinyl monomer, a mixture of vinyl esters of at least one polymerizable hydroxyvinyl ester and at least one branched, at least trifunctional, polymerizable vinyl ester, and the polyisocyanate component (B) containing a thermally activatable free radical-forming agent as catalyst for the polymerization of the vinyl monomers, with the proviso that the proportion by weight of the vinyl ester mixture is greater than the proportion by weight of the at least one polyol as well as the proportion by weight of the at least one polyisocyanate.Type: GrantFiled: November 28, 2007Date of Patent: July 10, 2012Assignee: Hilti AktiengesellschaftInventor: Arne Reinheimer
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Publication number: 20120157559Abstract: The invention relates to hydrophilic aliphatic polyurethane foams obtained by reacting special prepolymers having a low monomer concentration and hydrophilic polyisocyanates in the presence of water. The absorptive properties make said polyurethane foams particularly suitable for producing wound dressings, cosmetic articles, or incontinence products.Type: ApplicationFiled: August 26, 2010Publication date: June 21, 2012Applicant: Bayer MaterialScience AGInventors: Sebastian Dörr, Meike Niesten
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Publication number: 20120129966Abstract: The present invention relates to the production and use of polyester polyols produced from at least one aromatic dicarboxylic acid or an alkyl ester of an aromatic dicarboxylic acid or the anhydride of an aromatic dicarboxylic acid and at least one ?,?-diol, wherein the formation of 1,4-dioxane from diethylene glycol is largely suppressed by means of specific reaction management.Type: ApplicationFiled: June 2, 2010Publication date: May 24, 2012Applicant: Bayer MaterialScience AGInventors: Hartmut Nefzger, Erika Bauer, Johannes Van De Braak, Silvia Kasperek
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Patent number: 8183302Abstract: The present invention relates to polyether polyol compositions containing renewable raw materials, a process for preparing visco-elastic polyurethane foams using such compositions, correspondingly prepared visco-elastic foam materials, and the use thereof.Type: GrantFiled: February 23, 2009Date of Patent: May 22, 2012Assignee: Bayer MaterialScience AGInventors: Bert Klesczewski, Sebastien Triouleyre, Matthäus Gossner, Sven Meyer-Ahrens, Alice Mosbach-Rosenberger
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Patent number: 8178591Abstract: Microcellular polyurethane flexible foams having densities no greater than 0.3 g/cc which are suitable for use as lightweight shoe sole components are produced with carbon dioxide in an amount such that the polyurethane-forming mixture has a free rise density of from about 0.03 to about 0.3 g/cc. At least a portion of that carbon dioxide is dissolved as a gas into one or both of the reaction components. The amount of dissolved carbon dioxide must be such that the froth density of the isocyanate and/or isocyanate-reactive component(s) in which the carbon dioxide is dissolved will be from about 0.1 to about 0.8 g/cc. Additional carbon dioxide may be formed by the reaction of water and isocyanate during the polyurethane-forming reaction but the total amount of CO2 present should be controlled to ensure that the polyurethane-forming mixture has a free rise density of from about 0.03 to 0.3 g/cc.Type: GrantFiled: January 19, 2010Date of Patent: May 15, 2012Assignees: Bayer MaterialScience LLC, Bayer MaterialScience AGInventors: Usama E. Younes, David M. Baily, Charles R. Carpenter
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Publication number: 20120095122Abstract: The present invention relates to polyurethane, and specifically relates to a polyurethane microcellular elastomer, a method for preparing the same, and the use thereof. The polyurethane microcellular elastomer is the reaction product of (1) an isocyanate-terminated prepolymer obtained by reacting an isocyanate with a first polyol, (2) a second polyol, (3) a chain extender and (4) a catalyst, wherein the first polyol and/or second polyol comprise at least one polycarbonate polyol obtained by reacting carbon dioxide with an alkene oxide. This method of preparing polyurethane microcellular elastomer can not only reduce the demand for raw materials derived from petrochemicals, but also realize the utilization of the “greenhouse gas” carbon dioxide.Type: ApplicationFiled: March 31, 2010Publication date: April 19, 2012Applicant: Bayer MaterialScience AGInventors: Zhiping Zhou, Zhong Cao, Yide Liang, Yuedong Zhang, Jen Chieh Roy Lin
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Patent number: 8158692Abstract: The present invention provides a polyurethane foam for an automobile steering wheel. More particularly, the present invention relates to polyurethane foam formed by using a predetermined amount of a polyol having various functional groups and OH values and a predetermined amount of isocyanate having a certain function, along with water as a foaming agent, thereby preventing the environmental problems caused by use of the conventional fluorine-based or pentane-based foaming agent and also improving durability such as water resistance.Type: GrantFiled: April 18, 2008Date of Patent: April 17, 2012Assignee: Hyundai Motor CompanyInventors: Seok Hwan Kim, Won Jin Seo, Joo Young Maeng, Han Sung Paik, Gi Man Kim
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Publication number: 20120083544Abstract: A microcellular urethane composition, comprising a polyol component, an isocyanate component having an isocyanate index ratio of from about 65 to about 145; and up to about 50% by weight of a nano-scale filler dispersed throughout the composition. Methods for producing a reinforced microcellular urethane component are also provided.Type: ApplicationFiled: October 5, 2010Publication date: April 5, 2012Applicant: Freudenberg-NOK General PartnershipInventors: Pratik Shah, Edward Hosung Park
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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: 8143364Abstract: Process for preparing a composition by reacting a polyisocyanate, a monoalkoxy polyoxyalkylene monoamine and water. The composition and its use in making cellular products are claimed as well.Type: GrantFiled: February 12, 2007Date of Patent: March 27, 2012Assignee: Huntsman International LLCInventors: Gerhard Jozef Bleys, Hans Godelieve Guido Verbeke
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Patent number: 8124662Abstract: The subject of the present invention is a foamed polymer-inorganic binder hybrid material having controlled density and morphology, in particular a foamed polyurethane-inorganic binder hybrid, a method for the preparation of the same and its uses. Said material has high characteristics of thermal and acoustic insulation, water vapor permeability, fire resistance, lightness, as well as a good adhesiveness to concretes, mortars and plasters and a good compression resistance.Type: GrantFiled: July 4, 2007Date of Patent: February 28, 2012Assignee: Consiglio Nazionale Delle Ricerche (CNR)Inventors: Salvatore Iannace, Ernesto Di Maio, Letizia Verdolotti, Marino Lavorgna
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Publication number: 20120041090Abstract: The process comprises preparing a reaction mixture from a polyisocyanate component and from a polyol component which comprises one or more polyester polyols formed from at least one dimer fatty acid and/or at least one dimer fatty alcohol. In order to improve the processability of the polyurethane flexible foams so that these foams can be produced with the desired hardness and mechanical properties over a broad density range, the isocyanate reactive compounds contain, per 100 parts by weight thereof, 25 to 95 parts by weight of said polyester polyols and 5 to 75 parts by weight of one or more polyether polyols which are free of dimer fatty chains. In this way, no lipophilic filler is needed so that the fogging and emission properties of the foam can be improved. Moreover, softer foam can be produced without having to apply a too low NCO index resulting in better mechanical properties and in particular in a lower compression set.Type: ApplicationFiled: April 8, 2010Publication date: February 16, 2012Applicant: RECTICELInventors: Hans Parmentier, Pieter Van Tittelboom, Bart Persijn, An Termont, Nele Ledoux
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Patent number: 8106106Abstract: A method for producing polyisocyanurate insulation foams, the method comprising contacting an A-side stream of reactants that includes an isocyanate with a B-side stream of reactants that include a polyol and a blowing agent, where the blowing agent includes isopentane and n-pentane in a substantial absence of cyclopentane.Type: GrantFiled: September 24, 2010Date of Patent: January 31, 2012Assignee: Firestone Building Products Company, LLCInventor: John B. Letts
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Patent number: 8097657Abstract: The present invention relates to organic polymer porous materials, and in particular, to an organic polymer porous material that functions as a reusable insoluble solid catalyst and a method for producing the same. The organic polymer porous material of the present invention is characteristic in that the amount of immobilized bases is high and the specific surface area is large. The object has been achieved by an organic polymer porous material including a polymer (PA) obtained by polymerizing a polymerizable composition (A) containing a compound (a) obtained by reacting a dendrimer (a1) having at least an amino group as a reactive functional group or a polyethyleneimine (a2) having at least an amino group as a reactive functional group with a compound (a3) having a vinyl group and a group that can react with the reactive functional group.Type: GrantFiled: August 3, 2009Date of Patent: January 17, 2012Assignees: DIC Corporation, Kawamura Institute of Chemical ResearchInventors: Shinji Kato, Shin Ogasawara
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Patent number: 8067479Abstract: A microcellular polyurethane obtainable by reacting a polyisocyanate, a polyester formed from a dimer fatty acid and/or dimer fatty diol, and a chain extender. The foam is particularly suitable for use as a component of shoe soles.Type: GrantFiled: October 21, 2009Date of Patent: November 29, 2011Assignees: Croda International PLC, Uniqema B.V.Inventors: Paul Cameron, Eric Appelman
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Publication number: 20110281965Abstract: The invention relates to the use of polyurethane casting compounds for producing light-resistant compact or expanded polyurethane or polyurethane urea bodies that are characterized by exceptionally good mechanical and visual properties and particularly have a very high heat shape retention.Type: ApplicationFiled: January 13, 2010Publication date: November 17, 2011Applicant: Bayer MateialScience AGInventors: Hans-Josef Laas, Jens Krause, Reinhard Halpaap, Christian Wamprecht, Dorota Greszta-Franz
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Patent number: 8030366Abstract: The invention relates to the use of polyethers containing urethane or urea groups as foam stabilizers, obtained by reacting at least one isocyanate with (a) at least one hydrophilic polyether which statistically carries at least one OH and/or NH2 and/or NH function and (b) at least one hydrophobic polyether which statistically carries at least one OH and/or NH2 and/or NH function and optionally (c) further compounds which carry at least one OH and/or NH2 and/or NH function and/or other isocyanate-reactive groups, such as carboxyl or epoxide functions, with the proviso that at least one isocyanate is ?difunctional.Type: GrantFiled: September 6, 2007Date of Patent: October 4, 2011Assignee: Evonik Goldschmidt GmbHInventors: Michael Ferenz, Christian Eilbracht, Jutta Esselborn, Sascha Herrwerth, Gabriele Platte
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Patent number: 7989516Abstract: The present invention relates to composite elements containing, as a layer, at least one thermoplastic polymer, adhering to which, as a layer, a polyisocyanate polyaddition product is attached, and a process for the production thereof.Type: GrantFiled: November 6, 2007Date of Patent: August 2, 2011Assignee: Bayer MaterialScience AGInventors: Peter Haas, Catherine Lövenich, Hartwig Grammes
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Patent number: 7985780Abstract: A cylindrical molding based on cellular polyurethane elastomers having a density according to DIN EN ISO 845 of from 300 to 900 kg/m3, a tensile strength according to DIN EN ISO 1798 of ?2.Type: GrantFiled: February 21, 2006Date of Patent: July 26, 2011Assignee: BASF SEInventors: Elke Marten, Andreas Heidemann, Markus Schütte, Michael Strauβ, Heinrich Bollmann, Ralf Hansen
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Patent number: 7964653Abstract: A polyol composition contains a polyaminochlorophenylmethane mixture (A) and a polyol (B), in which the component (A) is uniformly dissolved in the component (A) in a weight ratio of 30/70 to 60/40. The component (A) includes 50 to 70% by weight of a specific binuclear polyaminochlorophenylmethane compound, 20 to 40% by weight of a specific trinuclear polyaminochlorophenylmethane compound and 5 to 10% by weight of a specific tetranuclear or higher polyaminochlorophenylmethane compound. The polyol composition exhibits excellent miscibility and dissolution stability, is liquid and enables molding of a foamed article for abrasive in a simple two-component mixing casting machine. According to the present invention, water serving as a foaming agent can be added to the polyol composition containing MBOCA, and the composition for a two-component curable abrasive foam can be held to a temperature equal to or lower than the boiling point of water, thus avoiding water from evaporating upon molding.Type: GrantFiled: December 16, 2003Date of Patent: June 21, 2011Assignee: DIC CorporationInventors: Fumio Yamamoto, Katsuhide Nishimura
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Publication number: 20110124760Abstract: A fire-resistant polyurethane foam is provided. A hydroxyl-containing inorganic fire retardant is premixed with a polyisocyanate and a polyol, respectively, to form two premixtures. Then, the two premixtures are mixed for reaction to form a fire-resistant polyurethane foam. Preferably, a combination of different particle sizes of the fire retardant is employed to maximize the amount of the fire retardant and increase the fire resistance of the foam.Type: ApplicationFiled: October 8, 2010Publication date: May 26, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Po-Ju Chen, Sung-Jeng Jong, Ren-Kuen Chang, Chin-Shang Hsu, Jer-Young Chen, Yih-Her Chang, Chei Kao
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Patent number: 7943678Abstract: The invention presents a new method to prepare biomedical polyurethanes with high tensile and tear strengths. Such polyurethanes are especially interesting for making foams thereof, e.g. as meniscus implants. A new method, applicable to the biomedical polyurethanes, has been found to make such foams, that can be used as scaffolds. This method is based on salt leaching and phase separation.Type: GrantFiled: February 19, 2004Date of Patent: May 17, 2011Assignee: Orteq, B.V.Inventors: Ralf Guillaume Jean Catharina Heijkants, Albert Johan Pennings, Jacqueline Hermina De Groot, Ralph Vincent Van Calck
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Patent number: 7939574Abstract: In one of its aspects, the present invention relates to foamed isocyanate-based polymer derived from a reaction mixture comprising an isocyanate, an active hydrogen-containing compound, a dendritic macromolecule and a blowing agent; wherein at least a 15% by weight of the dendritic macromolecule may be mixed with a polyether polyol having an OH number less than about 40 mg KOH/g to form a stable liquid at 23° C. The dendritic macromolecule confers advantageous load building characteristics to the foamed isocyanate-based polymer and may be used to partially or fully displace the use of conventional copolymer polyols used. A process for production of a foam isocyanate-based polymer and a process for conferring loading building properties to a foamed isocyanate-based polymer are also described.Type: GrantFiled: June 30, 2008Date of Patent: May 10, 2011Assignee: Proprietect L.P.Inventors: Jeffrey D. Van Heuman, Paul V. Farkas, Romeo Stanciu
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Publication number: 20110054057Abstract: The polishing pad is suitable for planarizing at least one of semiconductor, optical and magnetic substrates. The polishing pad includes a cast polyurethane polymeric material formed with an isocyanate-terminated reaction product formed from a prepolymer reaction of a prepolymer polyol and a polyfunctional isocyanate. The isocyanate-terminated reaction product has 4.5 to 8.7 weight percent unreacted NCO; and the isocyanate-terminated reaction product is cured with a curative agent selected from the group comprising curative polyamines, curative polyols, curative alcoholamines and mixtures thereof. The polishing pad contains at least 0.1 volume percent filler or porosity.Type: ApplicationFiled: June 4, 2008Publication date: March 3, 2011Inventor: Mary Jo Kulp
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Publication number: 20110015291Abstract: Prepolymers, which are accessible from formamides of low molecular weight di- or triamines (formamide-terminated low molecular weight compounds) and di- or polyisocyanates, of the general formula (II): X—[—N(CHO)—CO—NH—R1—NCO]n ??(II) wherein X represents a linear or branched aliphatic, cycloaliphatic, heterocyclic and/or aromatic structural unit having 2 to 40 carbon atoms, and which is optionally further substituted and/or optionally comprises one or more heteroatoms, wherein R1 represents an organic radical which may optionally contain one or more heteroatoms and which may further contain one or more additional free isocyanate groups and/or one or more urethane, biuret, carbodiimide, isocyanurate, allophanate, iminooxadiazinedione and/or uretdione structural units, and wherein n?2; processes for making the same; compositions containing the same; and uses thereofType: ApplicationFiled: July 16, 2010Publication date: January 20, 2011Applicant: Bayer MaterialScience AGInventors: Harald Blum, Evelyn Peiffer, Marc Leimenstoll
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Patent number: 7855240Abstract: The subject invention provides an open-celled polyurethane foam formed from a polyurethane spray foam system that mixes a formulated resin component with an isocyanate component. The resultant open-celled polyurethane spray foam has a density of about ½ pound per cubic foot. The resin component includes water as a blowing agent, a first aliphatic, amine-initiated polyol having a number-average molecular weight of from 150 to 500 and having tetra-functionality, and a second polyol having terminal hydroxyl groups and having a number-average molecular weight of from 3500 to 8000. A curing component having at least one primary amine group and having a number-average molecular weight of from 150 to 5000 is also included in the resin component. The spray foam system reacts a) the resin component and b) the isocyanate component in a volumetric ratio of a) to b) of from 1:1.2 to 1:5 and having an isocyanate index of from 15 to 70.Type: GrantFiled: August 20, 2003Date of Patent: December 21, 2010Assignee: BASF CorporationInventors: Katrina Schmidt, Chris Janzen, Greg Gardin, Chris Lacarte
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Publication number: 20100286298Abstract: Polyurethane foams of improved resilience properties can be produced from: a) a polyisocyanate, b) a polyether polyol or polyester polyol, c) a blowing agent, d) one or more optional additives or auxiliary compounds, and e) a redispersible polymer powder based on a homopolymer or copolymer of one or more monomers from the group consisting of vinyl esters of un-branched or branched alkylcarboxylic acids having from 1 to 15 carbon atoms, methacrylic esters and acrylic esters of alcohols having from 1 to 15 carbon atoms, vinylaromatics, olefins, dienes and vinyl halides.Type: ApplicationFiled: January 13, 2009Publication date: November 11, 2010Applicant: Dow Global Technologies Inc.Inventors: Francois M. Casati, Margarita Perello
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Publication number: 20100249913Abstract: This invention relates to biodurable, reticulated elastomeric matrices that are resiliently-compressible, their manufacture and uses including uses for implantable devices into or for topical treatment of patients, such as humans and other animals, for therapeutic, nutritional, or other useful purposes.Type: ApplicationFiled: June 11, 2010Publication date: September 30, 2010Applicant: Biomerix CorporationInventors: Arindam Datta, Craig Friedman, Peter D. Costantino, Ian N. Askill, Daniel Klempner, Arthur H. Tinkelenberg, Aisa Sendijarevic
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Publication number: 20100234482Abstract: The present invention relates to a method for producing an isocyanate-based polymeric material by polymerizing a reaction mixture which comprises different reaction components, including at least one polyisocyanate component and at least one component which is reactive towards said polyisocyanate component. The reaction components comprise at least one anchor component which has at least one anchor group which enables to bond a functional component covalently to the polymeric material. The anchor group is a reactive unsaturated group which does not react during the polymerisation process so that the polymerisation process is not interfered. The anchor group is selected to that it can bind the functional component by a click chemistry reaction to the polymeric material.Type: ApplicationFiled: June 26, 2008Publication date: September 16, 2010Applicant: Universiteit GentInventors: Filip Du Prez, David Fournier, Peter Spanhove
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Publication number: 20100233112Abstract: A shape memory polymer network may include at least one polymer, a plurality of proton accepting heterocyclic groups, a plurality of proton donating groups, and a plurality of cross-link moieties. At least one of the proton accepting heterocyclic groups and the proton donating groups is attached to the at least one polymer. The network may include an original shape at zero stress, and may include a deformed shape upon subjection to a stress. The network changes from the deformed shape to the original shape upon exposure to an external stimulus.Type: ApplicationFiled: January 15, 2010Publication date: September 16, 2010Inventors: Jinlian Hu, Shaojun Chen
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Publication number: 20100234483Abstract: Molded polyurethane foams are provided which are useful as seals and have an ultimate elongation of at least about 300%. The foams may be formed from a first composition including a polyol, a chain extender, optional surfactants, catalysts, and blowing agents, in combination with a second composition including a polyol and an isocyanate.Type: ApplicationFiled: February 1, 2010Publication date: September 16, 2010Inventors: Jason Sung, Gene A. Stellon, Caren L. Necio, Aisa Sendijarevic, Vahid Sendijarevic
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Publication number: 20100230879Abstract: Polyurethane elastomer foams can be prepared by mixing an isocyanate-terminated prepolymer obtained by reaction of a polyol with 3,3?-dimethylbiphenyl-4,4?-diisocyanate, with a foaming agent comprising a mixture of water, a low-molecular weight glycol having a molecular weight of 48-200, and a high-molecular weight glycol having a number average molecular weight Mn of 1000-3000 under stirring to conduct foaming reaction. The polyurethane elastomer foams so produced can have a high durability, particularly under a high load, even though a low-cost, easy-to-handle diisocyanate compound is used.Type: ApplicationFiled: June 25, 2007Publication date: September 16, 2010Applicant: UNIMATEC CO. LTD.Inventors: Tetsuya Watanabe, Takashi Chiba, Hiroyuki Otani
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Patent number: RE43432Abstract: Single component compositions for making a moisture-cured polyurethane foam are disclosed. Foam produced from the compositions of the present invention produce very low foaming pressure due to their 60-95 percent open-cell content. After these compositions are applied and cure, they form a permanent seal around the perimeter of installed fenestration products.Type: GrantFiled: August 8, 2001Date of Patent: May 29, 2012Assignee: Dow Global Technologies LLCInventors: Robert G. Braun, Jess M. Garcia, Deborah A. Schutter