With Reactant Compound Containing At Least Two -c-c(=x)-x-c Groups And Which Compound Is Devoid Of C-nh, C=nh Or C-n(h)-h Groups Patents (Class 528/80)
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Dryblend process for preparing high-reactivity polyurethane compositions containing uretdione groups
Patent number: 8702899Abstract: The present invention relates to polyurethane compositions containing uretdione groups that can be cured at a low temperature and are intended more particularly for polyurethane powder coating compositions and adhesive compositions, to a process for preparing them and to their use.Type: GrantFiled: November 19, 2008Date of Patent: April 22, 2014Assignee: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Gabriele Brenner -
Patent number: 8697830Abstract: Light-stable, sinterable, thermoplastic polyurethanes with improved blooming behavior and good thermal stability as well as good technical processability are produced from an aliphatic diisocyanate using one or more chain extenders corresponding to a specified formula. These polyurethanes are particularly useful in the production of molded articles, particularly molded articles for automotive interiors.Type: GrantFiled: May 4, 2007Date of Patent: April 15, 2014Assignee: Bayer MaterialScience AGInventors: Henricus Peerlings, Wolfgang Kaufhold, Hartmut Nefzger, Erika Bauer, Markus Broich
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Publication number: 20140088245Abstract: Disclosed are hydrophobic polyester-polycarbonate polyols which are the reaction product of (a) a polyester polyol and (b) one or more polycarbonate polyols. The polyester polyol (a) is the reaction product of: (i) one or more hydrophobic monomers, (ii) one or more organic acids, and (iii) one or more alcohols having an OH functionality of 2 or more. The polyester-polycarbonate polyols may be both amorphous and liquid at room temperature and have excellent hydrolytic stability. The hydrolytic and chemical performance of the polyester-polycarbonate polyols described herein is superior to that of commercially available hydrophobically modified polyester polyols and to that of commercially available polyester-polycarbonate polyols as described herein.Type: ApplicationFiled: March 30, 2012Publication date: March 27, 2014Applicant: Dow Global Technologies LLCInventors: Harpreet Singh, Jorge Jimenez, William H. Heath, Woo-Sung Bae, Amarnath Singh
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Patent number: 8680213Abstract: Thermoplastic polyurethanes are obtainable by reacting (a) isocyanates with (b1) polyesterdiols having a melting point greater than 150-C, (b2) polyetherdiols and/or polyesterdiols, each having a melting point of less than 150-C and a molecular weight of from 501 to 8 000 g/mol, and, if required, (c) diols having a molecular weight of from 62 to 500 g/mol.Type: GrantFiled: July 9, 2007Date of Patent: March 25, 2014Assignee: BASF AktiengesellschaftInventors: Norbert Pohlmann, Andreas Przybilski, Rolf Steinberger
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Patent number: 8652568Abstract: The instant invention is a coating system, a coating composition, a coating layer, a coated substrate, a method for producing a coating composition, a method for forming a coating layer, a method for making a coated substrate, and a method for healing a coated substrate. The coating system according to the present invention comprises (a) one or more natural oil derived polyols having an average of 3 or more hydroxyl groups per molecule, a number average molecular weight in the range of 300 to 3000 Daltons, a Tg in the range of from less than 0° C.; and (b) one or more polyisocyanates.Type: GrantFiled: September 7, 2011Date of Patent: February 18, 2014Assignee: Dow Global Technologies LLCInventors: Sudhakar Balijepalli, Ray E. Drumright, Sarah T. Eckersley, Brad E. Elwood, Paul Foley, Yanziang Li, Kumar Nanjundiah
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Patent number: 8653219Abstract: Proposed is a process for preparing a reactive polyurethane composition that is characterized in that in a first process stage, from an isocyanate-reactive polymer or mixture of isocyanate-reactive polymers with a fraction of at least 90%, preferably at least 95%, more preferably at least 99% by weight of linear molecules, by reaction with a polyisocyanate having a molecular weight <500, in a molar deficit of the isocyanate groups of the polyisocyanate relative to the isocyanate-reactive end groups of the polymer or mixture of polymers, a monomer-free thermoplastic polyurethane is prepared which in a second process stage is reacted with a low-monomer-content, isocyanate-terminal prepolymer, in a molar ratio of the isocyanate-reactive end groups of the thermoplastic polyurethane to the isocyanate groups of the prepolymer of 1:1.1 to 1:5, to give the isocyanate-reactive polyurethane composition.Type: GrantFiled: November 28, 2005Date of Patent: February 18, 2014Assignee: Klebchemie M.G. Becker GmbH & Co. KGInventors: Klaus Becker-Weimann, Walter Höhn, Michael Fahrländer
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Biocompatible, Biodegradable Polyurethane Materials With Controlled Hydrophobic to Hydrophilic Ratio
Publication number: 20140023725Abstract: The biocompatible, biodegradable materials in the solid and/or liquid form are based on segmented linear polyurethanes and/or segmented crosslinked polyurethanes based on A) one or more biocompatible polyols susceptible to hydrolytic and/or enzymatic degradation having a molecular weight of 100 to 20,000 dalton and a number of active hydroxyl groups per molecule (functionality) of at least two or higher; B) one or more diisocyanates and/or triisocyanates; and C) one or more low molecular weight chain extenders having a molecular weight of 18 to 1000 dalton and the functionality of at least two or higher.Type: ApplicationFiled: June 10, 2013Publication date: January 23, 2014Applicant: DEPUY SYNTHES PRODUCTS, LLCInventor: Sylwester Gogolewski -
Publication number: 20140010858Abstract: The present invention is directed to polymeric compositions comprising a biodegradable copolymer that possesses shape-memory properties and implantable devices (e.g., drug-delivery stents) formed of materials (e.g., a coating) containing such compositions. The polymeric compositions can also contain at least one non-fouling moiety, at least additional biocompatible polymer, at least one biobeneficial material, at least one bioactive agent, or a combination thereof. The polymeric compositions are formulated to possess good mechanical, physical and biological properties. Moreover, implantable devices formed of materials comprising such compositions can be delivered to the treatment site in a conveniently compressed size and then can expand to dimensions appropriate for their medical functions.Type: ApplicationFiled: May 28, 2013Publication date: January 9, 2014Applicant: Abbott Cardiovascular Systems Inc.Inventors: John J. Stankus, O. Mikael Trollsas, Michael H. Ngo
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Patent number: 8623989Abstract: Polyurea/polythiourea compositions comprising the reaction product of a first component comprising isocyanate and a second component comprising an amine, wherein the first component further comprises an isocyanate functional polythioether-polyurethane and/or polythiourethane, and/or the second component further comprises an amine/hydroxy functional polythioether, are disclosed. Methods for using the coating, and substrates coated therewith, are also disclosed.Type: GrantFiled: July 3, 2007Date of Patent: January 7, 2014Assignee: PRC De Soto International, Inc.Inventors: Howard Senkfor, Thomas R. Hockswender, Nina Bojkova, Paul P. Greigger, Gregory J. McCollum, John R. Gilmore, Chandra B. Rao
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Patent number: 8602504Abstract: The present invention relates to cast polyurethane elastomers of high resilience, clarity, and attractive abrasion resistance derived from polyurethane systems comprising a customized selection of polycaprolactone polyol incorporated into the isocyanate and/or isocyanate-reactive composition.Type: GrantFiled: October 13, 2005Date of Patent: December 10, 2013Assignee: Dow Global Technologies LLC.Inventor: Rui Xie
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Patent number: 8598297Abstract: Prepolymers are prepared by a reaction of a polyisocyanate and a hydroxylmethyl containing polyester polyol derived from a fatty acid. The prepolymers can be prepared having isocyanate, hydroxyl, or a variety of other reactive functional groups. The prepolymers are useful in making polyurethanes and other polymers, or a crosslinking agents.Type: GrantFiled: October 24, 2005Date of Patent: December 3, 2013Assignee: Dow Global Technologies LLCInventors: Erdem Bedri, Debkumar Bhattacharjee, John N. Argyropoulos
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Patent number: 8575280Abstract: Disclosed is a thermosetting resin composition including; (A) a carboxyl group-containing polyurethane prepared by using (a) a polyisocyanate compound (b) polyol compounds (c) a carboxyl group-containing dihydroxy compound as raw materials, (B) a curing agent, wherein the polyol compounds (b) are one or more kinds of polyol compound(s) selected from Group (I) and one or more kinds of polyol compound(s) selected from Group (II); Group I: polycarbonate polyol, polyether polyol, polyester polyol, and polylactone polyol, Group II: polybutadiene polyol, polysilicone having terminal hydroxyl groups, and such a polyol that has 18 to 72 carbon atoms and oxygen atoms present only in hydroxyl groups. The thermosetting resin composition can give a protection film for flexible printed circuits that has excellent long-term reliability of electric insulation, flexibility, and low warpage from curing shrinkage, and particularly low tackiness.Type: GrantFiled: December 7, 2006Date of Patent: November 5, 2013Assignee: Showa Denko K.K.Inventors: Hiroshi Uchida, Ritsuko Azuma
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Patent number: 8569440Abstract: The invention relates to high-reactivity polyurethane compositions containing uretdione groups and intended for use in the plastics sector.Type: GrantFiled: September 8, 2005Date of Patent: October 29, 2013Assignee: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Rainer Lomölder, Dirk Hoppe, Christoph Nacke, Andre Raukamp
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Publication number: 20130274411Abstract: A water-dispersible, air-drying uralkyd resin comprising the reaction product of a) of at least one fatty acid modified polyester polyol comprising components i) at least one unsaturated C6 to C30 fatty acid; ii) at least one aromatic monocarboxylic acid; iii) at least one (cyclo)aliphatic dicarboxylic acid or (cyclo)aliphatic dicarboxylic anhydride; iv) at least one polyol; b) at least one polyol having a hydroxyl value in the range of from 50 to 350 mgKOH/g; c) at least one polyol bearing ionic and/or potentially ionic water-dispersing groups with a weight average molecular weight?500 g/mol; and d) at least one polyisocyanate.Type: ApplicationFiled: June 10, 2013Publication date: October 17, 2013Inventors: Adriaan HOFLAND, Albertus Ronald HOFKAMP, Franciscus Adrianus Cornelis BERGMAN
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Patent number: 8557947Abstract: Curable polyurethane, polyurea and polyurethane/polyurea compositions that are particularly useful as the outer layer and/or at least one inner layer of golf balls, cured compositions, golf balls comprising the cured composition, and methods of increasing the initial velocity of a golf ball using the curable polyurethane, polyurea and polyurethane/poly urea compositions are disclosed.Type: GrantFiled: October 26, 2012Date of Patent: October 15, 2013Assignees: The Hanson Group, LLC, Formost Golf Manufacturing, Ltd.Inventors: Wallace Lee Hanson, Jr., Kevin W. Light, Ray Vernon Scott, Jr., Shenshen Wu
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Patent number: 8557346Abstract: A composition capable of radiation activated catalysis is provided. The composition comprises a metal compound, a mercapto compound and an olefinic compound. Radiation curable urethane compositions comprising the disclosed composition are also provided. The radiation curable urethane compositions comprise the disclosed composition, a hydroxyl compound and an isocyanate compound. Activation of the composition by radiation in a urethane formulation provides for an efficient method of curing the urethane composition. Coating and adhesive compositions comprising the radiation curable urethane compositions are also provided. In addition, methods for coating and bonding substrates are disclosed.Type: GrantFiled: November 16, 2012Date of Patent: October 15, 2013Assignee: Ashland Licensing and Intellectual Property LLCInventors: Raymond S. Harvey, Thomas M. Moy, Gary M. Carlson
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Patent number: 8536293Abstract: The present invention provides a triblock copolymer and a viscoelastic biostable foam comprising the same.Type: GrantFiled: March 15, 2011Date of Patent: September 17, 2013Assignee: Vysera Biomedical LimitedInventors: Niall Behan, Ashutosh Kumar
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Patent number: 8535655Abstract: The invention relates to a biodegradable polymer comprising a plurality of releasable bioactive moieties, the releasable bioactive moieties being pendant from and covalently bonded to the biodegradable polymer backbone, wherein the biodegradable polymer backbone is formed from monomeric units that are each coupled via a biodegradable moiety, and wherein the bioactive moieties are capable of being released at a rate equal to or faster than the rate of biodegradation of the polymer backbone.Type: GrantFiled: April 8, 2011Date of Patent: September 17, 2013Assignee: Polyactiva Pty Ltd.Inventors: Michael Shane O'Shea, Florian Hans Maximilian Graichen, Russell John Tait, Heng Chy Taing, Justine Leigh Jeffery
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Publication number: 20130236831Abstract: A polyurethane resin which is an addition polymer, includes an isocyanate compound containing at least a compound having two or more isocyanate groups; and an alcohol compound containing rosin diol represented by Formula (1): wherein in Formula (1), R1 and R2 represent a hydrogen atom or a methyl group, L1, L2, and L3 each independently represent a carbonyl group, an ester group, an ether group, a sulfonyl group, a chain alkylene group which may have a substituent, a cyclic alkylene group which may have a substituent, an arylene group which may have a substituent, and a divalent linking group selected from a group consisting of combinations of the above-described groups, wherein L1 and L2 or L1 and L3 may form a ring together, and A1 and A2 represent a rosin ester group.Type: ApplicationFiled: July 31, 2012Publication date: September 12, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Hirotaka MATSUOKA, Sumiaki YAMASAKI, Yuki SASAKI, Satoshi HIRAOKA, Hirofumi SHIOZAKI, Emi MIYATA
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Patent number: 8530600Abstract: This invention concerns thermoplastic polyurethane mouldings with improved surface resistance (resistance to writing and scratching) and very good technical processability as well as their use.Type: GrantFiled: April 28, 2011Date of Patent: September 10, 2013Assignee: Bayer MaterialScience AGInventors: Faisal Shafiq, Christian Wamprecht, David Pucket
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Patent number: 8487051Abstract: Polymeric urethane dispersants with solubilizing polymer chains and with reactive carbon to carbon double bonds are described. The reactive double bonds facilitate molecular weight build-up of the dispersant on dispersed particles (enhancing colloidal stability) or enhance the ability of the dispersants to be crosslinked into a matrix material.Type: GrantFiled: December 15, 2009Date of Patent: July 16, 2013Assignee: Lubrizol Advanced Materials, Inc.Inventors: Stuart N. Richards, Andrew J. Shooter
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Patent number: 8476396Abstract: A composition that includes isocyanate group containing compounds that include on average i) a NCO functionality less than or equal to 3.5; and ii) from 1.5 to 8 percent by weight, based on the isocyanate containing compound, of allophanate groups; and which is substantially free of uretdione groups. The composition can be used in two component elastomeric coating compositions that include a component A the above-described composition and a component B that includes a compound containing one or more functional groups that are reactive with isocyanate groups. The elastomeric coating compositions can be used to coat substrates.Type: GrantFiled: May 25, 2007Date of Patent: July 2, 2013Assignee: Bayer MaterialScience LLCInventors: David P. Zielinski, Myron Shaffer, Michael K. Jeffries
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Patent number: 8455608Abstract: The invention relates to a process for preparing a thermoplastic polyisocyanate polyaddition product based on polyisocyanate (i) and compounds which are reactive toward polyisocyanate, with or without the use of chain extenders, a first catalyst (iv) and/or auxiliaries and/or additives (v), wherein a second catalyst is initially vaporized and then applied to the polyisocyanate polyaddition product by condensation, and to the products prepared therefrom.Type: GrantFiled: February 25, 2011Date of Patent: June 4, 2013Assignee: BASF SEInventors: Torben Kaminsky, Dirk Kempfert
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Patent number: 8455679Abstract: A prepolymer system has a monomeric isocyanate content of no greater than about 10% by weight based on 100 parts by weight of the prepolymer system. The prepolymer system comprises a diluent component and a prepolymer component different than and separate from the diluent component. The diluent component has an excess of isocyanate (NCO) functional groups, and comprises the reaction product of a monohydric isocyanate-reactive component and an excess of a first isocyanate component. The first isocyanate component comprises monomeric isocyanates reactive with the monohydric isocyanate-reactive component. The prepolymer component also has an excess of NCO functional groups, and comprises the reaction product of a polyol component and an excess of a second isocyanate component. The prepolymer system can be used to prepare foams via reaction with water. The foams have low density and have excellent adhesion and sound dampening properties for use in cavities of automobile bodies.Type: GrantFiled: December 12, 2008Date of Patent: June 4, 2013Assignee: BASF SEInventors: Thomas G. Savino, Nikolay Lebedinski, Rajesh Kumar, Calvin T. Peeler
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Publication number: 20130131222Abstract: The present invention relates to polyurethane polymers comprising as part of its polymer backbone biobased ?-hydroxyfatty acids or derivatives thereof, processes for the preparation thereof, and compositions thereof having improved properties. The polyurethanes of the present invention are prepared from copolyester prepolymers comprising the biobased ?-hydroxyfatty acids that may also contain additional components that can be selected from aliphatic or aromatic diacids, diols and hydroxyacids obtained from synthetic and natural sources. The biobased ?-hydroxyfatty acids that comprise the polyurethanes and copolyester prepolymers of the present invention are made using a fermentation process from pure fatty acids, fatty acid mixtures, pure fatty acid ester, mixtures of fatty acid esters, and triglycerides from various sources.Type: ApplicationFiled: March 11, 2011Publication date: May 23, 2013Applicant: SyntheZyme LLCInventor: Richard A. Gross
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Publication number: 20130116357Abstract: The invention relates to the use of solvent-free modified polyisocyanate mixtures on the basis of araliphatic diisocyanates for producing light- and weather-resistant polyurethane bodies having light refraction and low dispersion.Type: ApplicationFiled: July 15, 2011Publication date: May 9, 2013Applicant: BAYER INTELLECTUAL PROPERTY GMBHInventors: Hans-Josef Laas, Dorota Greszta-Franz, Reinhard Halpaap, Dieter Mager, Hans-Ulrich Meier-Westhues
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Patent number: 8415471Abstract: This invention relates to flexible cycloaliphatic diisocyanate trimers and a process for the preparation of these. These flexible products are allophanate-modified, partially trimerized cycloaliphatic diisocyanates and are characterized by a low Tg. More specifically, the Tg of the resultant product ranges from about ?30° C. to about 40° C., after the excess monomer has been removed from the product.Type: GrantFiled: November 29, 2007Date of Patent: April 9, 2013Assignee: Baver MaterialScience LLCInventors: Myron W. Shaffer, Michael K. Jeffries, David P. Zielinski
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Patent number: 8378052Abstract: A composition capable of radiation activated catalysis is provided. The composition comprises a metal compound, a mercapto compound and an olefinic compound. Radiation curable urethane compositions comprising the disclosed composition are also provided. The radiation curable urethane compositions comprise the disclosed composition, a hydroxyl compound and an isocyanate compound. Activation of the composition by radiation in a urethane formulation provides for an efficient method of curing the urethane composition. Coating and adhesive compositions comprising the radiation curable urethane compositions are also provided. In addition, methods for coating and bonding substrates are disclosed.Type: GrantFiled: September 10, 2010Date of Patent: February 19, 2013Assignee: Ashland Licensing and Intellectual Property LLCInventors: Raymond S. Harvey, Thomas M. Moy, Gary M. Carlson
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Patent number: 8357767Abstract: The present invention provides a polyurethane or polyurethane/urea composition which has a tensile strength greater than 10 MPa, a modulus of elasticity greater than 400 MPa and an elongation at break greater than 30% at a temperature of between 0° C. and 60° C. and at a relative humidity of between 0% and 100%. The invention further provides uses of the compositions of the invention in biomedical vascular stents, an orthopedic implant, a drug delivery coating or in tissue engineering.Type: GrantFiled: October 3, 2008Date of Patent: January 22, 2013Assignee: Polynovo Biomaterials LimitedInventors: Timothy Graeme Moore, Pathiraja Arachchillage Gunatillake, Raju Adhikari, Shadi Houshyar
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Patent number: 8357768Abstract: The present invention is a low haze thermoplastic polyurethane (TPU) comprising structural units of a diisocyanate; a diol and three different chain extenders (butanediol chain extender; a different linear diol co-chain-extender and a cyclic co-chain-ex-tender). The TPU has good combinations of light transmission and clarity, low temperature flexibility, and high moisture vapor transition rates compared to other commercial or known TPUs. The preferred composition is a TPU that is based on polycaprolactone as diol, MDI as the diisocyanate monomer, butanediol chain extender, 1,3 propanediol linear chain co-extender and cyclohexanedimethanol cyclic chain co-extenders, and has good clarity and tensile strength.Type: GrantFiled: November 17, 2006Date of Patent: January 22, 2013Inventors: Hani Farah, Francisco Lerma, Jr.
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Patent number: 8349987Abstract: The disclosure relates to biocompatible components useful for forming compositions for use as medical/surgical synthetic adhesives and sealants. Biocompatible components of the present disclosure may include a polymeric polyol core, which may be treated with a nitroaryl compound to form a nitro ester. The resulting nitro ester groups may be reduced to form amino groups which, in turn, may be treated to form isocyanate groups. The resulting isocyanate may then be reacted with a second component to form adhesive and/or sealant compositions.Type: GrantFiled: February 2, 2010Date of Patent: January 8, 2013Assignee: Covidien LPInventors: Mbiya Kapiamba, Jack Kennedy, Roland Ostapoff
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Patent number: 8338558Abstract: Polymeric urethane dispersants with solubilizing polymer chains and with reactive carbon to carbon double bonds are described. The reactive double bonds facilitate molecular weight build-up of the dispersant on dispersed particles (enhancing colloidal stability) or enhance the ability of the dispersants to be crosslinked into a matrix material.Type: GrantFiled: June 1, 2006Date of Patent: December 25, 2012Assignee: Lubrizol Advanced Materials, Inc.Inventors: Stuart N. Richards, Andrew J. Shooter
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Patent number: 8334357Abstract: Disclosed is a thickener based on an aqueous preparation of a nonionic, water-dispersible or water-soluble polyurethane, obtained by reacting: (a) hydrophilic polyols containing at least two OH groups and at least two functional groups selected from ether and ester, of molecular weight at least 300; (b) hydrophobic compounds containing at least one zerewitinoff-active hydrogen atom, of molecular weight about 100 to about 500, with at least one linear or branched, saturated or unsaturated alkyl chain having at least five consecutive carbon atoms not linked to a hetero atom; and (c) at least difunctional isocyanates, where the components are reacted in equivalent ratios OHa):ZHb):NCOc) of 1:(1+x):2(1+y), with the provisos that x is 0.05-1.2, y is (0.2-1.05)x, and more than one equivalent of NCOc) is present versus the sum of OHa) and ZHb).Type: GrantFiled: June 22, 2005Date of Patent: December 18, 2012Assignee: Cognis IP Management GmbHInventors: Ludwig Schieferstein, Oliver Pietsch
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Patent number: 8318890Abstract: A polycarbonate diol which is useful as a raw material compound for producing a polycarbonate-based polyurethane having a sufficient mechanical strength and excellent in a balance of physical properties such as oil resistance, hydrolysis resistance, and weather resistance and which is amorphous. The polycarbonate diol includes repeating units of the below-shown formula (A) and the below-shown formula (B), wherein both terminal groups are hydroxyl groups, the ratio of the below-shown formula (A) to the below-shown formula (B) is 99:1 to 1:99 by mol, and number-average molecular weight is 300 to 10,000.Type: GrantFiled: February 17, 2006Date of Patent: November 27, 2012Assignee: Asahi Kasei Chemicals CorporationInventors: Tetsuo Masubuchi, Eizaburou Ueno, Yasuyuki Yoshioka, Yasuyuki Tsukimori
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Patent number: 8303625Abstract: Described herein are a group of degradable, thermoplastic polymers, which are able to change their shape after an increase in temperature. Their shape memory capability enables bulky implants to be placed in the body through small incisions or to perform complex mechanical deformations automatically. The shape memory polymers are preferably biocompatible and can be biodegradable or non-degradable polymers. Preferably, the biodegradable polymer has a linear degradation rate. In a specifically preferred embodiment, the suture is formed of biodegradable polymer capable of forming a self-tightening knot. In a most preferred embodiment, the suture is used to close a wound or body scission.Type: GrantFiled: April 18, 2003Date of Patent: November 6, 2012Assignee: Helmholtz-Zentrum Geesthacht Zentrum fuer Material- und Kuestenforschung GmbHInventors: Andreas Lendlein, Robert S. Langer
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Patent number: 8296974Abstract: The present invention is a transparent thermoplastic polyurethane (TPU) comprising structural units of: a.) a diisocyanate; b.1) a polyester diol and b.2) a specific polyether diol and c.) a chain extender. The TPU has good combinations of light transmission and clarity, tensile strength, low temperature flexibility, and high moisture vapor transition rates compared to other commercial or known TPUs. A preferred example composition is a TPU that is based on MDI as the diisocyanate monomer, polycaprolactone as a polyester diol, an EO capped EO/PO polyether diol containing less than 20% EO, and butanediol as chain extender. These composition have good combinations of clarity, tensile strength, hydrolytic stability and processability compared to TPUs prepared using either polyester or polyether diols alone or the combination with a higher EO polyether diol.Type: GrantFiled: September 22, 2006Date of Patent: October 30, 2012Assignee: Lubrizol Advanced Materials, Inc.Inventors: Mark F. Sonnenschein, J. Mark Cox, Hanno R. Van der Wal, Benjamin L. Wendt
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Patent number: 8299201Abstract: A one-component polyurethane composition includes at least one polyurethane prepolymer having terminal isocyanate groups which is prepared from at least one polyisocyanate and at least one polyol, and to at least one catalyst system which is obtainable from at least one bismuth compound and at least one aromatic nitrogen compound. The polyurethane composition may be used as an adhesive, sealant, coating or lining. Finally, catalysts for polyurethane compositions are disclosed which represent coordination compounds between bismuth and at least one aromatic nitrogen compound.Type: GrantFiled: October 1, 2003Date of Patent: October 30, 2012Assignee: Sika Technology AGInventors: Urs Burckhardt, Andreas Diener
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Patent number: 8288478Abstract: Golf balls containing at least one layer made from a thermoplastic polyurethane or polyurethane-urea that is the reaction product of a polyisocyanate with moisture-resistant polyol and a curing agent are provided. The moisture-resistant polyol may be prepared by dimerizing unsaturated aliphatic monocarboxylic acid or ester containing 10 to 60 carbon atoms followed by reacting it with a monomeric, oligomeric, or polymeric diol. In one preferred version, the moisture-resistant polyol is a branched polyester polyol containing 36 carbon atoms. The composition can be prepared using prepolymer or one-shot manufacturing techniques. The resulting golf ball has desirable playing performance properties including high resiliency, toughness, impact durability, moisture-resistance, and soft feel.Type: GrantFiled: February 25, 2010Date of Patent: October 16, 2012Assignee: Acushnet CompanyInventors: Murali Rajagopalan, Derek A. Ladd, Michael J. Sullivan
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Patent number: 8287788Abstract: The present invention relates to a process for the continuous production of thermoplastically processable polyurethane elastomers, by metering a polyisocyanate (A), a proportion of 1-80 equivalent%, based on the isocyanate group content of the polyisocyanate (A), of a compound (B) having an average of at 1.8-3.0 hydrogen atoms having Zerewitinoff activity, with an average molar mass of 450-5000 g/mol, and a proportion of 12-99 equivalent%, based on the isocyanate group content of the polyisocyanate (A), of a chain extender (C), into a self-cleaning twin-screw extruder whose diameter is 32-62 mm, which is operated at shear rates above 6000 s?1 and residence times of 1-20 seconds, and then bringing the mixture from the self-cleaning twin-screw extruder into a second apparatus in order to complete the reaction.Type: GrantFiled: January 31, 2006Date of Patent: October 16, 2012Assignee: BASF AktiengesellschaftInventors: Guenter Scholz, Marian Mours, Sven Lawrenz, Horst Papenfuss, Christoph Bahr, Ruediger Krech
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Publication number: 20120252967Abstract: The present invention relates to a polyurethane polymer comprising as part of its polymer backbone an ?-oxy carbonyl moiety of general formula (I), where A and B represent the remainder of the polymer backbone and are the same or different, and R is an optionally substituted aliphatic hydrocarbon having three or more carbon atoms.Type: ApplicationFiled: April 17, 2009Publication date: October 4, 2012Applicants: Grains Research and Development Corporation, Commonwealth Scientific and Industrial Research OrganisationInventors: Francesca Ercole, Florian Hans Maximilian Graichen, Stella Kyi, Michael Shane O'Shea, Andrew Charles Warden
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Patent number: 8273846Abstract: The present invention relates to high-quality polyurethane and polyurethane urea elastomers which exhibit unique combinations of processing characteristics, oxidation resistance, mechanical and mechanical/dynamic properties in particularly demanding applications. These polyurethane elastomers and polyurethane urea elastomers are based on novel polycarbonate polyols.Type: GrantFiled: July 8, 2008Date of Patent: September 25, 2012Assignee: Bayer MaterialScience AGInventors: Hartmut Nefzger, James-Michael Barnes, Manfred Schmidt, Jens Krause
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Patent number: 8270089Abstract: A method of forming thermoplastic polyurethane (TPU) into an optical lens. Suitable TPUs contain urethane (—NHCOO—) repeating units that are present in at least 23% by weight. This range of urethane weights is an indicator of a flexural modulus above 1,400 MPa. The TPUs have refractive indices above 1.54 and Abbe numbers above 27. They have glass transition temperatures above about 100 degrees C. The selected TPU can be injection molded to form ophthalmic lenses, that are well suited for use in rimless spectacles. The lenses are highly solvent resistant, while at the same time being readily tintable. The lenses made according the invention meet FDA 21 CFR 801.41 Impact Requirement, and ANSI Z87.1 high velocity impact (HVI) standard.Type: GrantFiled: April 5, 2007Date of Patent: September 18, 2012Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Hao-Wen Chiu, Roger A. Mayr, Leanirith Yean
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Patent number: 8268952Abstract: The invention relates to supramolecular ionomers. i.e. polymers having quadruple hydrogen bonding units (4H-units) and ionic groups or ionogenic groups within their structure. The supramolecular ionomers can be dispersed or solubilized in water at high solids contents while maintaining low viscosities, facilitating easy use and processing of the resulting aqueous formulations. The aqueous supramolecular ionomer compositions have excellent film-forming properties. Moreover, the polymer materials have good mechanical properties after drying, as they are not tacky, show high elasticity and low or no creep.Type: GrantFiled: July 11, 2005Date of Patent: September 18, 2012Assignee: Suprapolix B.V.Inventors: Gaby Maria Leonarda Van Gemert, Ronny Mathieu Versteegen, Henricus Marie Janssen, Egbert Willem Meijer, Anton Willem Bosman
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Publication number: 20120214938Abstract: The disclosure relates to water-dispersible polyurethane polymers as well as related polyurethane dispersion (PUD) compositions including the same, methods of making the same, methods of using the same, and articles coated with the same. The water-dispersible polyurethane polymer includes hydrophobic oligomeric polyether soft segments that include 1,2-di-substituted oxyethylene repeating units. The 1,2-di-substituted oxyethylene repeating units are derived from unsaturated fatty acid esters, such as from a distribution of epoxidized vegetable oil fatty acid esters subjected to a ring-opening polymerization process for oligomeric polyether polyol formation. The water-dispersible polyurethane polymer further includes hard segments common to other PUD compositions.Type: ApplicationFiled: February 15, 2012Publication date: August 23, 2012Applicant: EASTERN MICHIGAN UNIVERSITYInventor: Vijaykumar M. Mannari
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Patent number: 8242228Abstract: The present invention is a low haze thermoplastic polyurethane (TPU) prepared from a chain extender mixture that includes an acyclic diol and a mixture of 1,3- and 1,4-cyclohexanedimethanol. The TPU elastomers exhibit good optical clarity, particularly when formed into relatively thick injection molded parts.Type: GrantFiled: December 3, 2007Date of Patent: August 14, 2012Inventors: John M. Cox, Francisco Lerma, Mark F. Sonnenschein
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Patent number: 8202618Abstract: The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures ?130° C. A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds that contain isocyanate-reactive groups and groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and then C) with one or more saturated, hydroxyl-containing compounds other than B), at least one of these compounds having an OH functionality of ?2, in the presence of D) a catalyst containing one or more ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids, the reaction with compounds C) taking place at least proportionally with the formation of allophanate groups.Type: GrantFiled: January 4, 2010Date of Patent: June 19, 2012Assignee: Bayer MaterialScience AGInventors: Jan Weikard, Christoph Gurtler, Wolfgang Fischer, Jorg Schmitt, Holger Mundstock
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Publication number: 20120142884Abstract: Bioresorbable thermoset elastomers and methods of making the same are disclosed. In certain embodiments, the thermoset elastomers include soft segments comprising branched polyesters, and hard segments including urethane and/or urea. The thermoset elastomers are made in certain embodiments by curing a branched prepolymer with a cross-linking agent. In certain embodiments, the mechanical properties of the thermoset elastomers are tailored by selecting the average molecular weight of the prepolymer, or by tuning the ratio of prepolymer to the cross-linking agent during curing, or by selecting a cross-linking agent with specific chemical characteristics.Type: ApplicationFiled: October 5, 2011Publication date: June 7, 2012Applicant: Arsenal MedicalInventors: Danny Concagh, Changcheng You, Greg Zugates
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Publication number: 20120123079Abstract: The invention relates to polyimide membranes and to a phase inversion method for the production thereof. The polyimide membranes can be used to separate different gas mixtures.Type: ApplicationFiled: July 22, 2010Publication date: May 17, 2012Applicant: Evonik Fibres GmbHInventors: Markus Ungerank, Goetz Baumgarten
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Patent number: 8153750Abstract: Ring opening products of epoxides with fatty acid methyl esters with alkanols or water are eminently suitable as viscosity adjusters (reducers) for high-viscosity polyols.Type: GrantFiled: June 22, 2005Date of Patent: April 10, 2012Assignee: Cognis IP Management GmbHInventors: Thorsten Roloff, Rainer Hoefer
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Patent number: 8148488Abstract: Disclosed is a polyisocyanate composition which is excellent in both curability and drying characteristic. The polyisocyanate composition contains at least one compound selected from aliphatic diisocyanates, at least one compound selected from alicyclic diisocyanates and at least one compound selected from polyols, while satisfying all of the following conditions; i) the diisocyanate monomer concentration is not more than 3 mass %, ii) the polyol component concentration is 1-50 mass %; and iii) the glass transition temperature is from ?50° C. to 0° C.Type: GrantFiled: March 1, 2005Date of Patent: April 3, 2012Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshiyuki Asahina, Masakazu Yamauchi, Hironori Katagawa