With Organic Nitrogen Reactant Which Contains Two Nh, =nh, Or Hnh Groups Patents (Class 528/61)
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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: 8623950Abstract: The present invention relates to a preparation method of polyurethaneurea elastic fiber, particularly a preparation method of high heat-resistant elastic fiber which retains unique physical properties of elastic fiber under the high temperature process. The polyurethaneurea elastic fiber of the present invention is characteristically prepared without using 1 functional mono-alcohol generally used to regulate the reaction speed and side-reaction during the prepolymer reaction to produce elastic fiber having excellent heat-resistance particularly for the dyeing processing or re-dyeing of polyester but using ethylenediamine alone as a chain extender for the polymerization. To reduce gel formation in polymer after the secondary polymerization and to regulate change of viscosity in the course of process, the ratio of the chain extender amine to the terminal group of prepolymer of the first polymerization is increased.Type: GrantFiled: December 1, 2008Date of Patent: January 7, 2014Assignee: Tae Kwang Ind. Co., Ltd.Inventors: Ickgy Shin, Inrak Jung, Haedong Kim
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Publication number: 20130331537Abstract: Polymeric materials referred to herein as PEU include a plurality of linking groups selected from urea and urethane groups, and a plurality of segments located between adjacent linking groups, where at least some of the segments of the PEU are polyoxyalkylene, but other exemplary segments include hydrocarbons, polyesters, polycarbonates and polysiloxanes. The polymeric materials are biocompatible and may be used, for example, to replace or supplement cartilage in an articulated joint.Type: ApplicationFiled: June 7, 2013Publication date: December 12, 2013Inventors: Kenneth David Gray, JR., Joel Thomas Corbett, Georgios Theofanis Hilas
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Patent number: 8604154Abstract: A water-soluble or water-dispersible carbodiimide compound is hydrophilicized by incorporating methyl glycolate or methyl lactate, which serves a moiety similar to the moiety which aqueous urethane resin, aqueous acrylic resin, or the like possesses, into an end of a starting carbodiimide compound. The invention provides a carbodiimide compound and a carbodiimide composition, which, when added as a cross-linking agent to aqueous resin, can enhance water resistance, solvent resistance, and adhesion of the resin, while maintaining the conventionally attained pot life, and an aqueous coating composition containing the carbodiimide compound or composition.Type: GrantFiled: March 17, 2009Date of Patent: December 10, 2013Assignee: Nisshinbo Holdings Inc.Inventors: Ikuo Takahashi, Kenichi Yanagisawa, Noriko Osuga
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Patent number: 8604153Abstract: The present invention provides poly(ureaurethane)s including a reaction product of components comprising: (a) at least one polyisocyanate selected from the group consisting of polyisocyanate trimers and branched polyisocyanates, the polyisocyanate having at least three isocyanate functional groups; (b) about 0.1 to about 0.9 equivalents of at least one polyol having 4 to 18 carbon atoms and at least 2 hydroxyl groups; and (c) at least one amine curing agent, wherein the reaction product components are essentially free of polyester polyol and polyether polyol; compositions, coatings and articles made therefrom and methods of making the same.Type: GrantFiled: December 14, 2006Date of Patent: December 10, 2013Assignee: PPG Industries Ohio, Inc.Inventors: Thomas G. Rukavina, Robert Hunia
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Publication number: 20130325062Abstract: The invention relates to a polyurea system comprising as component A) isocyanate-functional prepolymers which can be obtained by reacting aliphatic isocyanates A1) with polyols A2) that can have a number-average molecular weight of =400 g/mol and an average OH functionality of 2 to 6 in particular; and as component B) amino-functional aspartic acid esters of the general formula (I) in which X is an organic group containing a secondary amino function, R1, R2 are the same or different organic groups that do not have Zerewitinoff-active hydrogen, and n is a whole number of at least 2, in particular for sealing, bonding, gluing, or covering cell tissue. The invention also relates to a metering system for the polyurea system according to the invention.Type: ApplicationFiled: February 6, 2012Publication date: December 5, 2013Applicant: Bayer Intellectual Property GmbHInventors: Heike Heckroth, Christoph Eggert
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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: 8586185Abstract: Aqueous polyurethane-polyurethane urea dispersions comprising a reaction product of: (i) an NCO prepolymer prepared from; (A) one or more di- or higher-functional polyols having a mean molecular weight of 400 to 5000 daltons, (B) optionally one or more di- or higher-functional polyol components having a molecular weight of from 62 to 399 daltons, (C) one or more compounds which are monofunctional within the scope of the isocyanate polyaddition reaction and have an ethylene oxide content of at least 50 wt. % and a molecular weight of at least 400 daltons, and (D) one or more di- or poly-isocyanate components; and (ii) a mixture (E) of primary and/or secondary monoamino compounds (E1) and primary and/or secondary diamino compounds (E2); wherein at least one of the amino compounds of the mixture (E) has a functional group selected from sulfonates and carboxylates; wherein mixture (E) has a mean amino functionality of 1.65 to 1.Type: GrantFiled: October 24, 2008Date of Patent: November 19, 2013Assignee: Bayer MaterialScience AGInventors: Harald Kraus, Wolfgang Henning, Wolfgang Arndt
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Patent number: 8530603Abstract: An object of the present invention is to provide a golf ball that has excellent abrasion resistance and spin performance without sacrificing the processability of the cover, in a golf ball having a cover for which a crosslinkable thermoplastic polyurethane is used as a resin component. The present invention provides a golf ball comprising: a core; and a cover covering the core, wherein the cover is formed from a cover composition containing a thermoplastic polyurethane that has, as a constituting component, a chain extender having an unsaturated carbon-carbon bond.Type: GrantFiled: June 9, 2010Date of Patent: September 10, 2013Assignee: SRI Sports LimitedInventors: Kazuyoshi Shiga, Tetsuro Abe, Takashi Sasaki
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Patent number: 8524852Abstract: Golf balls containing at least one layer made from a thermoset 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 thermoset composition has good cross-link density. The resulting golf ball has desirable playing performance properties including high resiliency, toughness, impact durability, moisture-resistance, and soft feel.Type: GrantFiled: April 19, 2010Date of Patent: September 3, 2013Assignee: Acushnet CompanyInventors: Murali Rajagopalan, Michael Michalewich, Shawn Ricci, Michael J. Sullivan
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Patent number: 8512427Abstract: A chemical mechanical polishing pad comprising an acrylate polyurethane polishing layer, wherein the polishing layer exhibits a tensile modulus of 65 to 500 MPa; an elongation to break of 50 to 250%; a storage modulus, G?, of 25 to 200 MPa; a Shore D hardness of 25 to 75; and a wet cut rate of 1 to 10 ?m/min.Type: GrantFiled: September 29, 2011Date of Patent: August 20, 2013Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Jia Xie, David B. James, Chau H. Duong
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Patent number: 8500947Abstract: The present disclosure provides compositions having reduced viscosity which may be used as adhesives or tissue sealants, and includes methods for speeding the cure rate of such compositions.Type: GrantFiled: October 27, 2008Date of Patent: August 6, 2013Assignee: Covidien LPInventor: Ferass Abuzaina
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Patent number: 8487063Abstract: Methods for making polyurea polymer compositions are provided. The methods involve preparing an amine-terminated first prepolymer by reacting isocyanate compound A with a stoichiometric excess of polyamine. The first prepolymer is reacted with a stoichiometric excess of isocyanate compound B to form an isocyanate-terminated second prepolymer. The second prepolymer is reacted with a chain extender. The polymer compositions can be used in different products and are particularly suitable for making golf balls. For example, the polymer compositions can be used to make golf ball covers.Type: GrantFiled: December 22, 2010Date of Patent: July 16, 2013Assignee: Acushnet CompanyInventors: Michael Michalewich, Brian Comeau, David A. Bulpett, Shawn Ricci
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Patent number: 8476362Abstract: The invention relates to moisture-curing polyisocyanate mixtures, to a process for their preparation and to their use as binders in lacquers, coatings, adhesives and sealing materials.Type: GrantFiled: October 20, 2009Date of Patent: July 2, 2013Assignee: Bayer MaterialScience AGInventors: Christian Wamprecht, Iker Zuazo Osaca
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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: 8455609Abstract: Golf balls having improved cut and shear resistance that include covers and/or other layers formed from polyurea compositions formed with at least one amine-terminated polytetramethylene ether glycol homopolymer, at least one amine-terminated copolymer of polytetramethylene ether glycol and polyalkylene glycol. The amine-terminated polytetramethylene ether glycol homopolymer or amine-terminated copolymer of polytetramethylene ether glycol and polyalkylene glycol may be used as the isocyanate-reactive in the prepolymer and/or the curing agent.Type: GrantFiled: August 14, 2008Date of Patent: June 4, 2013Assignee: Acushnet CompanyInventors: Shawn Ricci, Randy Petrichko, Brian Comeau
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Patent number: 8445584Abstract: An aqueous polyurethane resin having a Si atom content of 0.05 to 1.5% by weight in a polyurethane resin is produced by at least reacting an isocyanate group-terminated prepolymer which contains 1 to 15% by weight of a polyoxyethylene group in a side chain branched from the main chain and has two or more isocyanate groups at an end of the main chain, with a chain extender which contains at least a compound having two or more active hydrogen groups reactive with the isocyanate group and an alkoxysilyl group.Type: GrantFiled: September 10, 2007Date of Patent: May 21, 2013Assignee: Mitsui Chemicals, Inc.Inventor: Takashi Uchida
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Patent number: 8420765Abstract: A polyurethaneurea composition comprises a reaction product of at least one diisocyanate compound, a polymeric glycol, a poly(tetramethylene-co-ethyleneether) glycol comprising constituent units derived by copolymerizing tetrahydrofuran and ethylene oxide (EO) wherein the portion of the constituent units derived from ethylene oxide is present in the poly(tetramethylene-co-ethyleneether) glycol from greater than about 37 to about 70 mole percent, at least one diamine chain extender, and at least one chain terminator. The invention further relates to the use of blends of polymeric glycols and poly(tetramethylene-co-ethyleneether) glycols as the soft segment base in spandex compositions. The invention also relates to new polyurethane compositions comprising polymeric glycols and poly(tetramethylene-co-ethyleneether) glycols, and their use in spandex.Type: GrantFiled: May 8, 2006Date of Patent: April 16, 2013Assignee: Invista North America S.ár.l.Inventor: Charles F. Palmer, Jr.
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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: 8399595Abstract: The invention is a two part composition comprising: A. an isocyanate functional group containing component comprising one or more polyisocyanates and one or more isocyanate functional group containing prepolymers having in its backbone the residue of one or more chains derived from polypropylene oxide, copolymers of ethylene oxide and propylene oxide or mixtures thereof wherein equivalent weight of the chains are predominantly about 780 or greater; B. an isocyanate reactive component comprising one or more polypropylene oxide, copolymers of ethylene oxide and propylene oxide or mixtures thereof having equivalent weights predominantly about 960 or greater and terminal groups which are reactive with isocyanate groups; C.Type: GrantFiled: July 22, 2008Date of Patent: March 19, 2013Assignee: Dow Global Technologies LLCInventors: Ulrich Tribelhorn, Renate R. Herger Hassan
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Patent number: 8349986Abstract: The present invention provides poly(ureaurethane)s including a reaction product of components comprising: (a) about 1 equivalent of at least one polyisocyanate; (b) about 0.1 to about 0.9 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; (c) about 0.1 to about 0.9 equivalents of at least one aliphatic diol having 2 to 18 carbon atoms; and (d) at least one amine curing agent, wherein the reaction product components are essentially free of polyester polyol and polyether polyol; compositions, coatings and articles made therefrom and methods of making the same.Type: GrantFiled: December 14, 2006Date of Patent: January 8, 2013Assignee: PPG Industries Ohio, Inc.Inventors: Thomas G. Rukavina, Robert Hunia
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Patent number: 8323525Abstract: A resin containing a liquid pigment dispersion is disclosed. The dispersion comprises a pigment dispersed in a blend of two or more active hydrogen-containing materials that together have a freezing point that is room temperature or below. The pigment remains dispersed in the blend, even if the dispersion is subjected to freezing and thawing. A curative blend comprising at least two active hydrogen-containing materials, which is liquid at room temperature, is also disclosed. The dispersions and curative blends of the present invention can be solvent-free. Resins and prepolymers comprising the curative blends of the invention, either pigmented or unpigmented, are also disclosed.Type: GrantFiled: December 21, 2011Date of Patent: December 4, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Kelly J. Gasper, Constantine A. Kondos
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Patent number: 8324336Abstract: 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/polyurea compositions are disclosed.Type: GrantFiled: May 29, 2008Date of Patent: December 4, 2012Assignees: The Hanson Group, LLC, Foremost Golf Manufacturing, Ltd.Inventors: Wallace Lee Hanson, Jr., Kevin W. Light, Ray Vernon Scott, Jr., Shenshen Wu
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Patent number: 8318855Abstract: A two-pack coating composition comprising curing agents selected from the group consisting of non-blocked poly-functional isocyanates I, polyaziridines Z, and carbodiimides Y, and an aqueously dispersed polyurethane U wherein the polyurethane U comprises building blocks derived from hydroxyl group containing unsaturated fatty acids B21, a process for the production of the polyurethane U, and a method of use thereof in combination with the said curing agents in preparing coating compositions which are particularly useful for wood.Type: GrantFiled: April 27, 2007Date of Patent: November 27, 2012Assignee: Cytec Surface Specialties Austria GmbHInventors: Markus Schafheutle, Anton Arzt, Susanne Dellinger, Hannelore Gsoell, Gerlinde Petritsch
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Publication number: 20120295506Abstract: Disclosed herein are a highly uniform spandex and process for making such spandex. More particularly, the polyurethaneurea of which such spandex is prepared has both dialkylurea and cycloalkylurea ends, wherein a chain terminator composition includes a dialkylamine such as diethylamine and a cylcoalkylamine such as cyclohexylamine.Type: ApplicationFiled: January 5, 2011Publication date: November 22, 2012Applicant: INVISTA North America S.a.r.l.Inventor: Steven P. Pardini
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Patent number: 8299171Abstract: The present invention relates to a spray-polyurethane system which comprises a polyol component (A) and an isocyanate component (B), where the polyol component (A) comprises a1) at least one compound reactive with isocyanate, a2) at least one reactive chain extender having at least two groups reactive toward isocyanates, where at least one group reactive toward isocyanates is a free, primary NH2 group, and also a3) at least one metal catalyst, and a4) if appropriate, further additives, where the spray-polyurethane system comprises no amine catalyst. The present invention moreover relates to a process for production of a backing layer composed of polyurethane for moldings and to the use of this backing layer for production of automobile parts. Inventive backing layers have good mechanical properties, and low emissions, and their demolding time is small when compared with the open assembly time.Type: GrantFiled: July 18, 2007Date of Patent: October 30, 2012Assignee: BASF AktiengesellschaftInventors: Cord Schmalkuche, Udo Hadick, Holger Leifheit, Georg Partusch, Franz Xaver Redl
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Patent number: 8298368Abstract: A composition for and method for bonding a substrate. In general, applied to a substrate will be a primer composition that includes an adhesion promoter, which is an adduct prepared by the reaction of at least one aromatic polyisocyanate compound, with an active hydrogen containing moiety of an organofunctional silane, and a prepolymer derived from the reaction of at least one aliphatic polyisocyanate and a polyol, and is at least partially reacted with an active hydrogen containing moiety of an organofunctional silane.Type: GrantFiled: May 20, 2011Date of Patent: October 30, 2012Assignee: Dow Global Technologies LLCInventors: Stefan Schmatloch, Dirk Schwöeppe
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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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Publication number: 20120255574Abstract: A composition comprising polymer PX, wherein polymer PX comprises a moiety of formula selected from the group consisting of: Formula 1, Formula 2 and a combination of Formula 1 and Formula 2: wherein Rx comprises a group according to Formula 3: wherein Ry and Rz are, independently, any suitable atom or moiety; and Ri is an electron-withdrawing functional group; and wherein polymer PX comprises at least one direct crosslink, wherein the direct crosslink is a direct covalent bond between the C? of the polymer PX and a second C? of a polymer PX, and wherein said direct crosslink comprises no intermediary atom. Also inter alia a cosmetic composition, a hairstyling composition, a method of styling hair, the use of the composition, a kit and a process for crosslinking.Type: ApplicationFiled: April 5, 2012Publication date: October 11, 2012Applicant: The Procter & Gamble CompanyInventors: Andreas FLOHR, Thomas Kripp
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Publication number: 20120259075Abstract: The present invention relates to an etheramine mixture containing a monoether diamine and its method of production by alkoxylating an initiator with an alkylene oxide to produce a precursor polyol and reductively aminating the precursor polyol to form the etheramine mixture. The etheramine mixture may be used in variety of applications including as a curing agent for an epoxy resin or as a reactant in the production of polyurea.Type: ApplicationFiled: December 21, 2010Publication date: October 11, 2012Applicant: HUNTSMAN PETROCHEMICAL LLCInventors: Howard P. Klein, Terry L. Renken, Martin J. Renner, Bruce L. Burton, Katty Darragas
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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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Patent number: 8246884Abstract: Compositions for golf balls that include polyurea linkages and that are crosslinked in the soft segments of the polymer backbone. In particular, the compositions of the invention, which are based on a polyurea have improved crosslink density from the crosslinking between the soft, unsaturated segments of the polymer backbone. The curative blend includes at least one isocyanate-reactive component and a free radical initiator.Type: GrantFiled: June 21, 2011Date of Patent: August 21, 2012Assignee: Acushnet CompanyInventors: Randy Petrichko, Shawn Ricci
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Patent number: 8227565Abstract: A method of forming golf balls with at least a portion formed from polyurethane and polyurea compositions employing a curative blend that includes a pigment, a curing agent, and a compatible freezing point depressing agent so that the curative blend has a lower freezing point than the curing agent by itself and the blend does not lose pigment dispersion upon solidification and subsequent thawing.Type: GrantFiled: February 14, 2011Date of Patent: July 24, 2012Assignee: Acushnet CompanyInventors: Shenshen Wu, Kelly J. Gasper, Constantine A. Kondos, Murali Rajagopalan
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Patent number: 8217133Abstract: In one aspect, the invention relates to storage-stable and flowable polyurethane compositions comprising (a) one or more isocyanate-terminated polyurethane prepolymers derived from one or more hydrocarbon ring-containing diisocyanates and/or triisocyanates and one or more polyols; (b) one or more metal salt complexes of methylenedianiline; and (c) one or more organic acid halide compounds having one or more acid halide groups, wherein the one or more organic acid halide compounds are in an amount wherein the acid halide groups are present in a minimum concentration of about 100 parts per million by weight of the polyurethane prepolymer. In other aspects, the invention relates to methods for storing the curable polyurethane compositions, as well as methods for producing polyurethane elastomers.Type: GrantFiled: February 5, 2007Date of Patent: July 10, 2012Assignee: Chemtura CorporationInventors: Phaniraj T. Nagaraj, R. Scott Archibald, Thomas R. Doyle, Ronald O. Rosenberg
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Patent number: 8188208Abstract: This invention relates to solid elastomers which exhibit reduced dimensional shrinkage, and to a process for the production of these elastomers. These elastomers comprise the reaction product of a polyisocyanate component or prepolymer, with an isocyanate-reactive component comprising a high molecular weight component having an EO cap having less than 17% by wt., a chain extender and optionally, a crosslinker, in the presence of at least one catalysts. These solid elastomers are produced via the reaction injection molding process in a closed mold, preferably at an isocyanate index of about 70 to about 130.Type: GrantFiled: January 13, 2005Date of Patent: May 29, 2012Assignee: Bayer MaterialScience LLCInventors: Stephen J. Harasin, William D. Keller, Jr.
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Patent number: 8178205Abstract: A multilayer polyurethane or polyurea erosion resistant coating with a matte topcoat over a primer layer and filled basecoat layer used to protect the leading edge against high speed liquid or solid particle erosion for helicopter rotor blades, propellers and other articles using polyurethane or polyurea compositions.Type: GrantFiled: June 14, 2010Date of Patent: May 15, 2012Assignee: Hontek CorporationInventor: Shek C. Hong
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Patent number: 8163865Abstract: Biocompatible amino acid anhydride polymers for use in tissue engineering, and methods for their preparation and use.Type: GrantFiled: August 6, 2009Date of Patent: April 24, 2012Assignee: University of WashingtonInventors: Shrojalkumar M. Desai, Buddy D. Ratner
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Patent number: 8158267Abstract: A method for partially metallizing a product comprising a first surface, a first polymer material, and a second surface, a second polymer material, wherein the method comprises the sequential steps of exposing the first and second surfaces to conditions which render the first surface hydrophilic, and the second surface hydrophobic; contacting the first and second surfaces with water or aqueous solution; contacting the first and second surfaces with a solution of a film former in a water-immiscible solvent; evaporating the solvent to allow formation of a film by the film former on the second surface; adherence of a film by the film former on the first surface is prevented by the presence of the water or aqueous solution thereupon; performing a conventional metallization process to deposit a metal layer on the first and second surface; and removing the metallized film from the second surface to render the first surface metallized.Type: GrantFiled: September 22, 2006Date of Patent: April 17, 2012Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNOInventors: Roland Anthony Tacken, Franky Flory Vercauteren, Hendrik Rendering
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Patent number: 8158741Abstract: A polyurethane resin forming composition comprising: a main agent (A) containing an isocyanate group-terminated prepolymer obtained by reacting an isocyanate group-containing compound (a1) with a polyfunctional polyether polyol (b1) having a specific molecular weight distribution obtained by the use of a compound having a functional group number of 8 as an initiator; and a curing agent (B) containing a castor oil-modified polyol (b2) obtained from castor oil and/or a castor oil fatty acid and a trimethylolalkane. This polyurethane resin forming composition is applicable to the production of large-sized hollow-fiber membrane modules and can form cured resins excellent in adhesion property and heat resistance, low in the temperature dependence of hardness and extremely small in the amount of substance eluted into water when immersed in the water.Type: GrantFiled: November 22, 2006Date of Patent: April 17, 2012Assignee: Nippon Polyurethane Industry Co., Ltd.Inventors: Kouji Yamato, Shyogo Itoh, Keiko Yoshida
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Patent number: 8148460Abstract: A liquid rheological aid comprising at least one urea derivative preparable which is the reaction product of at least one compound having at least one isocyanate group and at least one co-reactant selected horn primary and secondary monoamines and polyamines and water reacted in the presence of organobismuth catalyst, process for the preparation thereof and its use.Type: GrantFiled: September 21, 2004Date of Patent: April 3, 2012Assignee: BASF Coatings GmbHInventors: Christina Alpert, Heinz-Peter Rink
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Patent number: 8124235Abstract: A method of forming a matte topcoat for rotor blades, propellers and other articles used to protect a leading edge substrate against high speed liquid or solid particle erosion including premixing a concentrate of flatting agent dispersed in a solvent, reducing the moisture content using molecular sieves, blending the concentrate of flatting agent into a polyurethane or polyurea composition and forming a protective coating comprising a matte layer on the leading edge substrate.Type: GrantFiled: June 11, 2010Date of Patent: February 28, 2012Assignee: Hontek CorporationInventor: Shek C. Hong
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Patent number: 8097183Abstract: A liquid pigment dispersion is disclosed. The dispersion comprises a pigment dispersed in a blend of two or more active hydrogen-containing materials that together have a freezing point that is room temperature or below. The pigment remains dispersed in the blend, even if the dispersion is subjected to freezing and thawing. A curative blend comprising at least two active hydrogen-containing materials, which is liquid at room temperature, is also disclosed. The dispersions and curative blends of the present invention can be solvent-free. Resins and prepolymers comprising the curative blends of the invention, either pigmented or unpigmented, are also disclosed.Type: GrantFiled: March 1, 2010Date of Patent: January 17, 2012Assignee: PPG Industries Ohio, IncInventors: Kelly J. Gasper, Constantine A. Kondos
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Patent number: 8097675Abstract: Isocyanate mixtures comprising: (a) NCO prepolymers having an NCO content of 1.5 to 18 wt. %; and (b) 1 to 40 wt. % of monomeric 2,2?-diisocyanatodiphenylmethane, based on the isocyanate mixture; wherein the isocyanate mixture has a total NCO content of from 2 to 22 wt. %; polyisocyanate polyaddition products prepared therefrom; and methods of making the same.Type: GrantFiled: March 26, 2009Date of Patent: January 17, 2012Assignees: Bayer MaterialScience AG, Polytex Sportbelage Produktions GmbHInventors: Zdenka Finder, Jens Krause, Friedhelm Faehling, Manfred Schmidt, Dirk Wegener
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Publication number: 20120000603Abstract: The invention relates to the use of special isocyanate-terminated polyurethane prepolymers in adhesive formulations. Said adhesive formulations can be used in applications wherein a direct or indirect contact of the adhesive layer takes place with substrates that are sensitive thereto.Type: ApplicationFiled: February 2, 2010Publication date: January 5, 2012Applicant: Bayer Materialscience AGInventors: Christos Karafilidis, Matthias Wintermantel, Heinz-Werner Lucas
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Patent number: 8080626Abstract: This invention provides chain extender compositions. These compositions comprise (i) an aromatic primary diamine, and (ii) a component selected from the group consisting of: (a) an aliphatic secondary diamine; (b) an aliphatic primary diamine; (c) an aliphatic secondary diamine and an aliphatic primary diamine; (d) a diimine; and (e) a combination of any two or more of (a) through (d). When (ii) is (a), (a) has amino hydrocarbyl groups which are secondary or tertiary hydrocarbyl groups; when (ii) is (d), and (d) is an aromatic diimine, each imino hydrocarbylidene group has at least two carbon atoms. Processes for producing polyurethanes, polyureas, and polyurea-urethanes are also provided.Type: GrantFiled: February 16, 2011Date of Patent: December 20, 2011Assignee: Albemarle CorporationInventors: Paul L. Wiggins, John Y. Lee, Judit Orgad
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Patent number: 8076518Abstract: This invention provides chain extender compositions. These compositions comprise (i) an aliphatic secondary diamine, and (ii) a component selected from the group consisting of: (a) a cycloaliphatic primary diamine; (b) an aliphatic secondary diamine; (c) an aliphatic secondary diamine and an aliphatic primary diamine; (d) an aliphatic diimine; and (e) a combination of any two or more of (a) through (d), with the proviso that when (ii) is (a), (i) is a noncyclic aliphatic secondary diamine. Processes for producing polyurethanes, polyureas, and polyurea-urethanes are also provided.Type: GrantFiled: September 25, 2006Date of Patent: December 13, 2011Assignee: Albemarle CorporationInventors: Paul L. Wiggins, John Y. Lee, Judit Orgad, David W. Owens
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Patent number: 8076395Abstract: A heat curable epoxy composition comprising the contact product of an epoxy resin, an epoxy curing agent and an accelerator for the epoxy curing agent, the curing agent or the accelerator comprising a urea compound which is the reaction product of an isocyanate and an alkylated polyalkylenepolyamine having one primary or secondary amine and at least two tertiary amines of the general formula: where R1, R2, R3, R4 and R5 independently represent hydrogen, methyl or ethyl, n and m independently are integers from 1 to 6 and; X is an integer from 1 to 10.Type: GrantFiled: September 11, 2009Date of Patent: December 13, 2011Assignee: Air Products and Chemicals, Inc.Inventors: Atteye Houssein Abdourazak, Gamini Ananda Vedage
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Patent number: 8058343Abstract: Novel aqueous polyurethane dispersions and adhesive films formed therefrom are provided. The aqueous polyurethane dispersions are provided in solvent-free systems of a prepolymer comprising at least one polyether or polyester polyol, a mixture of MDI isomers, and a diol. The adhesive films from such dispersions can be heat-activated for bonding, lamination, and adhesion of textile fabrics, including stretch fabrics.Type: GrantFiled: May 14, 2007Date of Patent: November 15, 2011Assignee: Invista North America S.àr.l.Inventors: Hong Liu, Carmen A Covelli, Douglas K Farmer
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Patent number: 8039573Abstract: Compositions for golf balls that include polyurethane linkages and that are crosslinked in the soft segments of the polymer backbone. In particular, the compositions of the invention, which are based on a polyurethane have improved crosslink density from the crosslinking between the soft, unsaturated segments of the polymer backbone. The curative blend includes at least one isocyanate-reactive component and a free radical initiator.Type: GrantFiled: May 16, 2008Date of Patent: October 18, 2011Assignee: Acushnet CompanyInventors: Randy Petrichko, Shawn Ricci
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Publication number: 20110232390Abstract: An elastic material for pressure measurement, containing an elastic resin composition having at least either a urethane bond or a urea bond and being obtained by reacting an isocyanate with (A) a linear polyol and then curing the obtained prepolymer with use of a curing agent having two —NH2 groups in one molecule.Type: ApplicationFiled: March 29, 2011Publication date: September 29, 2011Applicant: FUJIFILM CorporationInventors: Yoshikazu MATSUMOTO, Mitsuru SAWANO