Next To Animal Skin Or Membrane Patents (Class 428/423.4)
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Patent number: 10654796Abstract: Provided is a method capable of preparing high-purity aliphatic isocyanate, particularly, xylylene isocyanate in a high yield in a simple manner without an additional separate process, wherein when aliphatic isocyanate is prepared using phosgene, a side-reaction inhibitor capable of inhibiting side-reactions is introduced during phosgenation.Type: GrantFiled: December 6, 2017Date of Patent: May 19, 2020Assignee: HANWHA CHEMICAL CORPORATIONInventors: Ju Young Park, Cho Hee Ahn, Seung Won Chae, Jeon Sik Kim, Sang Hyun Cho
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Patent number: 10611724Abstract: Provided is a method capable of preparing high-purity aliphatic isocyanate, particularly, xylylene isocyanate in a high yield in a simple manner without an additional separate process, wherein when aliphatic isocyanate is prepared using phosgene, a side-reaction inhibitor capable of inhibiting side-reactions is introduced during phosgenation.Type: GrantFiled: December 6, 2017Date of Patent: April 7, 2020Assignee: HANWHA CHEMICAL CORPORATIONInventors: Ju Young Park, Cho Hee Ahn, Seung Won Chae, Jeon Sik Kim, Sang Hyun Cho
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Patent number: 10287447Abstract: An example of a radiation curable binder dispersion for an inkjet ink includes water and a radiation curable polyurethane dispersed in the water. The radiation curable polyurethane has a weight average molecular weight that is equal to or less than 5,000, a glass transition temperature (Tg) less than 25° C., and a double bond density higher than 4.0. The radiation curable polyurethane binder dispersion is formed from a non-aromatic diisocyanate; a polyol; an acrylate or methacrylate, the acrylate or methacrylate having at least two hydroxyl functional groups and having an acrylate functional group or a methacrylate functional group; a compound including i) an ionic group or ii) a group to form an ionic group; and another acrylate or methacrylate, the other acrylate or methacrylate having a hydroxyl functional group or an amino functional group.Type: GrantFiled: October 31, 2014Date of Patent: May 14, 2019Assignee: Hewiett-Packard Development Company, L.P.Inventors: Tienteh Chen, Bin Huang, Gregg A. Lane
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Patent number: 9072334Abstract: A coated leather, in particular split cowhide leather, has a preferably nubuck-like appearing surface structure. The coating is formed with a surface layer formed with a mechanically and moisture-stable polymer and bonded to the surface of the leather or split leather by a polymer-based bonding layer. The outer layer is notable for inner smoothness and is formed with soft polyurethane. It includes in the non-embossed region microdepressions which are essentially closed in the direction of the leather but are open towards the outside, have an internal width of less than 130 ?m and are arranged close-packed to each other in the manner of soapy foam cells. The microdepressions are each separately bounded by thin mutually crosslinked stays which have on the outside a matt or finely fibrous fine-roughness structure surface, and have an essentially semispherical-shaped concave inner surface which faces outward and is smooth.Type: GrantFiled: March 25, 2013Date of Patent: July 7, 2015Assignee: LANXESS DEUTSCHLAND GMBHInventor: Philipp Schaefer
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Patent number: 9006304Abstract: The present invention relates to aqueous polyurethane-polyurea dispersions which stabilize a foam—produced by mechanical expansion—without addition of further foam-stabilizing components in such a way that aqueous foams are obtainable which are stable both during temporary storage and during processing, so that they can be applied in the form of foam also by customary application methods and substantially retain the foam structure even after drying.Type: GrantFiled: May 19, 2009Date of Patent: April 14, 2015Assignee: Stahl International B.V.Inventor: Juergen Muenter
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Patent number: 8846198Abstract: The present invention relates to aqueous compositions based on crystalline or semicrystalline polyurethane polymers, processes for the preparation thereof and adhesive systems comprising these aqueous compositions and the use thereof.Type: GrantFiled: October 25, 2010Date of Patent: September 30, 2014Assignee: Bayer MaterialScience AGInventors: Jörg Büchner, Dirk Achten, Harald Kraus, Wolfgang Arndt
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Publication number: 20140242397Abstract: The present invention discloses an environmentally-friendly polyurethane matting and a method of production thereof. The environmentally-friendly polyurethane matting comprises a leather surface, a polyurethane middle layer and an anti-slip leather bottom layer. The present invention is applied with the polyurethane instead of silica gel. The polyurethane avoids oil seepage when the matting is used, as is therefore environmentally-friendly fire proof, and safe. The elasticity and other performance of the polyurethane are hardly changed during usage, and environmentally-friendly polyurethane matting provides comfort and enhances the tactile feeling when people standing on the matting. Further, the matting has a long service life.Type: ApplicationFiled: September 18, 2012Publication date: August 28, 2014Inventor: Xiangyang LU
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Publication number: 20140147632Abstract: The present invention relates to a process for the production of aqueous polyurethane-polyurea dispersions for which A) firstly A1) primary and/or secondary monoamines or diamines are reacted with A2) cyclic carbonates which contain precisely one hydroxy group, where the molar ratio of A1) and A2) is such that in the case of monoamines A1) the theoretical ratio of the entirety of the primary and secondary amine groups to the cyclic carbonate groups is from 0.8 to 1.2 and in the case of diamines A1) the theoretical ratio of the entirety of the primary and secondary amine groups to the cyclic carbonate groups is from 1.8 to 2.Type: ApplicationFiled: May 22, 2012Publication date: May 29, 2014Applicant: CLARIANT INTERNATIONAL LTD.Inventor: Juergen Muenter
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Patent number: 8470444Abstract: Non aqueous water dispersible compositions comprising: I) polyisocyanates, which are made hydrophilic by reaction with a 1,3- or 1,2-nonionic diol containing one alkoxy-terminated polyoxyethylene and/or polyoxypropylene chain, II) one or more ethoxylated alcohol phosphates having at least one phosphoric group in acid form, and optionally III) a water miscible organic solvent, the compositions being useful as crosslinker for polyurethane aqueous dispersions.Type: GrantFiled: July 23, 2008Date of Patent: June 25, 2013Assignee: Lamberti SpAInventors: Gabriele Costa, Mauro Mapelli, Giuseppe Li Bassi
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Publication number: 20130122223Abstract: A compressible substrate coated at least in part with a waterborne coating composition comprising at least one base neutralized active hydrogen containing film-forming resin and a water dispersible carbodiimide crosslinker capable of reacting with the film-forming resin to form a crosslinked film is disclosed. An article of manufacture having at least two different flexible substrates coated at least in part with such a coating is also disclosed.Type: ApplicationFiled: January 7, 2013Publication date: May 16, 2013Applicant: PPG Industries Ohio, Inc.Inventor: PPG Industries Ohio, Inc.
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Patent number: 8426022Abstract: A coated leather, in particular split cowhide leather, has a preferably nubuck-like appearing surface structure. The coating is formed with a surface layer formed with a mechanically and moisture-stable polymer and bonded to the surface of the leather or split leather by a polymer-based bonding layer. The outer layer is notable for inner smoothness and is formed with soft polyurethane. It includes in the non-embossed region microdepressions which are essentially closed in the direction of the leather but are open towards the outside, have an internal width of less than 130 ?m and are arranged close-packed to each other in the manner of soapy foam cells. The microdepressions are each separately bounded by thin mutually crosslinked stays which have on the outside a matt or finely fibrous fine-roughness structure surface, and have an essentially semispherical-shaped concave inner surface which faces outward and is smooth.Type: GrantFiled: September 11, 2008Date of Patent: April 23, 2013Assignee: LANXESS Deutschland GmbHInventor: Philipp Schaefer
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Publication number: 20130078474Abstract: The invention relates to a method for producing aqueous polyurethane-polyurea dispersions, where A) first a polyurethane prepolymer containing NCO groups is produced by reacting A1) polyisocyanates with A2) polymeric polyols and/or polyamines having number-average molecular weights of more than 400 to 8,000 g/mol, A3) possibly low-molecular-weight compounds having number-average molecular weights of 17-400 g/mol selected from the group comprising mono- and polyalcohols, mono- and polyamines, and amino alcohols, A4) isocyanate-reactive, ionically or potentially ionically hydrophilic compounds and/or isocyanate-reactive non-ionically hydrophilic compounds, A5) isocyanate-reactive compounds, which contain at least one C7 to C24 alkyl group or C7 to C24 alkenyl group, and A6) isocyanate-reactive compounds, which contain at least one polysiloxane group, and B); the NCO groups of the prepolymer that are not yet free are reacted with isocyanate-reactive monoamines, polyamines, hydrazine, and/or hydrazides, dimensionType: ApplicationFiled: April 27, 2011Publication date: March 28, 2013Applicant: Clariant Finance (BVI) LimitedInventors: Juergen Muenter, Thomas Fischer
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Publication number: 20110236667Abstract: The invention relates to new aqueous polyurethane-modified alkyd resin dispersions, to their preparation and use as binders in paints and coatings.Type: ApplicationFiled: June 6, 2011Publication date: September 29, 2011Applicant: Bayer MaterialScience AGInventors: Harald Blum, Rolf Gertzmann, Christoph Irle, Maria Almato Guiteras, Juan Miguel Garcia Martinez
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Publication number: 20110200820Abstract: A composition which provides surface effects to substrates comprising a polymer containing at least one urea linkage prepared by (i) reacting (1) at least one organic diioscyanate, polyisocyanate, or mixture thereof, and (2) at least one fluorochemical compound of Formula I Rf—O(CF2CF2)r(CH2CH2)q(R1)sXH??Formula (I) wherein Rf is a linear or branched C1 to C7 perfluoroalkyl optionally interrupted by one to three oxygen atoms, r is 1 to 3, q is 1 to 3, s is 0 or 1, X is O, S, or NR2 wherein R2 is H, or C1 to C6 alkyl, and R1 is a divalent radical selected from —S(CH2)n—, p is 1 to 50, and R3, R4 and R5 are each independently H or C1 to C6 alkyl; (ii) and then reacting with (3) water, a linking agent, or a mixture thereof.Type: ApplicationFiled: April 25, 2011Publication date: August 18, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: SHENG PENG, Stephen James Getty, Timothy Edward Hopkins, Ying Wang
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Publication number: 20110111657Abstract: A coated substrate comprises a substrate and a coating on at least one surface of the substrate. The coating comprises a prepolymer, polymer, or resin produced, for example, by the reaction of (i) an isocyanate (e.g., a polyisocyanate), (ii) an active hydrogen-terminated colorant, and optionally (iii) at least one reactant selected from the group consisting of chain extenders, polyols, internal surfactants, and combinations thereof. Polymer dispersions suitable for use in making such coated substrates comprise such a prepolymer, polymer, or resin.Type: ApplicationFiled: January 17, 2011Publication date: May 12, 2011Inventors: Jusong Xia, Zhaolin Zhou, Kirkland W. Vogt, Philip G. Harris
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Publication number: 20110052903Abstract: A water dilutable UV-curable polyurethane containing alkylene oxide groups, the polyurethane being obtained from components comprising at least: (i) 1 to 25 wt. % of at least one polyisocyanate; (ii) 0 to 80 wt. % of at least one hydroxyl functional compound containing alkylene oxide groups; (iii) 10 to 90 wt. % of at least one hydroxyl functional compound containing at least one polymerisable unsaturated (meth)acryloyl functional group per molecule; and (iv) 0 to 50 wt. % of at least one isocyanate-reactive compound not comprised by (ii) or (iii); wherein the sum of (i) to (iv) is 100%.Type: ApplicationFiled: January 29, 2009Publication date: March 3, 2011Inventors: Josephus Christian Van Oorschot, Ronald Tennebroek, Roel Johannes Marinus Swaans, Marc Roelands
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Patent number: 7872069Abstract: A coated substrate comprises a substrate and a coating on at least one surface of the substrate. The coating comprises a prepolymer, polymer, or resin produced, for example, by the reaction of (i) an isocyanate (e.g., a polyisocyanate), (ii) an active hydrogen-terminated colorant, and optionally (iii) at least one reactant selected from the group consisting of chain extenders, polyols, internal surfactants, and combinations thereof. Polymer dispersions suitable for use in making such coated substrates comprise such a prepolymer, polymer, or resin.Type: GrantFiled: March 21, 2007Date of Patent: January 18, 2011Assignee: Milliken & CompanyInventors: Jusong Xia, Zhaolin Zhou, Kirkland W. Vogt, Philip G. Harris
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Publication number: 20100310882Abstract: This invention provides a natural leather having a coating film as a topcoat layer that can suppress and prevent the occurrence of an uncomfortable squeak noise and, at the same time, has softer feeling, soft and smooth feeling, and slick feeling, a composition for the formation of a coating film on a natural leather, and a process for producing a natural leather.Type: ApplicationFiled: December 26, 2008Publication date: December 9, 2010Applicant: MIDORI HOKUYO CO., LTD.Inventors: Masahiko Ogawa, Miwa Tada
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Publication number: 20100279568Abstract: Water-emulsifiable polyisocyanate compositions admixed with at least one solvent of formula (1) (R1O)2C(R2)—X—R3 are formulated into aqueous emulsions which advantageously further comprise a compound, bearing a mobile hydrogen function, or a compound containing precursor functions capable of liberating hydroxyl functions, and are useful for producing coatings on a variety of substrates, e.g., made of cement, wood or leather in particular, and also for producing adhesives.Type: ApplicationFiled: March 27, 2007Publication date: November 4, 2010Inventor: Damien Bourgeois
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Publication number: 20100209714Abstract: Non aqueous water dispersible compositions comprising: I) polyisocyanates, which are made hydrophilic by reaction with a 1,3- or 1,2-nonionic diol containing one alkoxy-terminated polyoxyethylene and/or polyoxypropylene chain, II) one or more ethoxylated alcohol phosphates having at least one phosphoric group in acid form, and optionally III) a water miscible organic solvent, the compositions being useful as crosslinker for polyurethane aqueous dispersions.Type: ApplicationFiled: July 23, 2008Publication date: August 19, 2010Inventors: Gabriele Costa, Mauro Mapelli, Giuseppe Li Bassi
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Patent number: 7754092Abstract: A composition comprising a mixture of at least one soil resist agent and at least one additive which is maleic anhydride, and a method of providing soil resistance to fibrous substrates are disclosed.Type: GrantFiled: August 14, 2008Date of Patent: July 13, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Joyce Monson Materniak, Edward Patrick Carey
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Patent number: 7709589Abstract: The invention relates to high-reactivity polyurethane compositions. The invention further relates to low temperature curable polyurethane compositions which contain uretdione groups, particularly useful for polyurethane powder coating compositions and adhesive compositions, and to processes for preparing and using the same.Type: GrantFiled: October 6, 2004Date of Patent: May 4, 2010Assignee: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Holger Loesch, Dirk Hoppe
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Publication number: 20100098950Abstract: The invention relates to radiation-curable compounds, to processes for preparing them, to their use, and to coating compositions comprising them and featuring high scratch resistance.Type: ApplicationFiled: October 8, 2007Publication date: April 22, 2010Inventors: Nick Gruber, Reinhold Schwalm, Osar Lafuent Cerda, Frank Voellinger, Cabrile Dlugosch, Erich Beck, Klaus Menzel, Susanne Neumann
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Publication number: 20100015430Abstract: An article having reversible thermal regulation properties comprises a substrate and a functional polymeric phase change material having a heat carrying capacity. The article is further characterized by a chemical function having moisture adsorbing properties that increase the heat carrying capacity.Type: ApplicationFiled: June 17, 2009Publication date: January 21, 2010Applicant: OUTLAST TECHNOLOGIES, INC.Inventors: Mark Hartmann, Aharon Eyal
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Publication number: 20100009582Abstract: The present invention relates to polyurethane ureas dissolved in organic solvents, which may be used as an adhesive coat for the coating of textiles.Type: ApplicationFiled: July 9, 2009Publication date: January 14, 2010Applicant: Bayer MaterialScience AGInventors: Jüergen Köcher, Thorsten Rische, Juergen Urban, Eva Urban, Anne Urban, Holger Casselmann, Thomas Feller
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Patent number: 7576137Abstract: A polyurethane molding is composed of at least two different polyurethane materials, namely of a polyurethane gel and a polyurethane foam. The foam and the gel are arranged in layers one above another so that both materials act together as spring or damping element with respect to a load in the transverse direction. These moldings may preferably be used as seat cushions.Type: GrantFiled: November 29, 2000Date of Patent: August 18, 2009Assignee: Technogel GmbH & Co. KGInventors: Peter Gansen, Massimo Losio
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Publication number: 20090130429Abstract: A leather finishing process in which, in pertinent part, a warm water milling step is added after the base coat is applied to “crust” leather and cured. The warm water contains at least one dye fixation agent including but not limited to about 0.1-2.0% by weight of formic acid. Moreover, the base coat itself is an aqueous base coat containing at least two polymers such as an acrylic salt or a polyurethane salt. Between the polymeric constituents of the base coat, the acid fixation agent, and the use of the warm water milling step after the base coat has been applied and dried, a surprisingly natural feel to the leather is attained without loss of excellent adhesion, wear-resistance and other properties when the leather is completely finished.Type: ApplicationFiled: January 28, 2009Publication date: May 21, 2009Applicant: Seton CompanyInventor: Hermann Winkler
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Publication number: 20080305342Abstract: The present invention relates to polyurethane dispersions comprising polysiloxane building blocks reactive towards isocyanates and processes for using their preparation and their use in coating leather.Type: ApplicationFiled: May 29, 2008Publication date: December 11, 2008Inventors: Juergen Reiners, Tillmann Hassel, Gerald Kurek
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Publication number: 20080261052Abstract: A coated substrate comprises a substrate and a coating on at least one surface of the substrate. The coating comprises a prepolymer, polymer, or resin produced, for example, by the reaction of (i) an isocyanate (e.g., a polyisocyanate), (ii) an active hydrogen-terminated colorant, and optionally (iii) at least one reactant selected from the group consisting of chain extenders, polyols, internal surfactants, and combinations thereof. Polymer dispersions suitable for use in making such coated substrates comprise such a prepolymer, polymer, or resin.Type: ApplicationFiled: March 21, 2007Publication date: October 23, 2008Inventors: Jusong Xia, Zhaolin Zhou, Kirkland W. Vogt, Philip G. Harris
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Publication number: 20080160320Abstract: The present invention relates to free-radically curable coating compositions, to methods of curing such coating compositions, and to their use.Type: ApplicationFiled: March 3, 2006Publication date: July 3, 2008Applicant: Basf AktiengesellschaftInventors: Erich Beck, Reinhold Schwalm, Katia Studer, Phuong Nguyen Tri, Christian Decker
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Publication number: 20080113198Abstract: Novel leather articles comprise a substrate and a coating applied to a surface of the substrate. The coating comprises a prepolymer or resin. The prepolymer or resin can be produced, for example, by the reaction of (i) an isocyanate, (ii) at least one reactant selected from the group consisting of chain extenders, polyols, and combinations thereof, and (iii) an active hydrogen-terminated colorant. The active hydrogen-terminated colorant comprises a chromophore and an active hydrogen-terminated constituent bound to the chromophore. Novel methods for producing leather articles using active hydrogen-terminated colorants are also provided.Type: ApplicationFiled: November 10, 2006Publication date: May 15, 2008Inventor: Jusong Xia
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Publication number: 20080113199Abstract: A composition which provides surface effects to substrates comprising a polymer containing at least one urea linkage prepared by (i) reacting (1) at least one organic diioscyanate, polyisocyanate, or mixture thereof, and (2) at least one fluorochemical compound of Formula I Rf—O(CF2CF2)r(CH2CH2)q(R1)sXH ??Formula (I) wherein Rf is a linear or branched C1 to C7 perfluoroalkyl optionally interrupted by one to three oxygen atoms, r is 1 to 3, q is 1 to 3, s is 0 or 1, X is O, S, or NR2 wherein R2 is H, or C1 to C6 alkyl, and R1 is a divalent radical selected from —S(CH2)n—, p is 1 to 50, and R3, R4 and R5 are each independently H or C1 to C6 alkyl; (ii) and then reacting with (3) water, a linking agent, or a mixture thereof.Type: ApplicationFiled: November 13, 2006Publication date: May 15, 2008Inventors: Sheng Peng, Stephen James Getty, Timothy Edward Hopkins, Ying Wang
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Patent number: 7223478Abstract: Aqueous polyurethane formulations, their use and substrates which are coated with such formulations are described.Type: GrantFiled: May 2, 2003Date of Patent: May 29, 2007Assignee: BASF AktiengesellschaftInventors: Reinhard Treiber, Karl Haeberle, Klaus Dieter Hoerner, Rudolf Bingemann, Bruno Hofer
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Patent number: 7097909Abstract: The present invention relates to a specific process in which wool is initially subjected to a plasma treatment and then to a wet chemical treatment with a finishing agent, which provides nonfelting wool in a technically simple and easily handleable manner.Type: GrantFiled: October 16, 2003Date of Patent: August 29, 2006Assignee: LANXESS CorporationInventors: Bernhard Jansen, Ferdi Kümmeler, Ralf Heinen
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Patent number: 7063892Abstract: An aromatic liquid-crystalline polyester having a small dielectric loss in a wide frequency region is provided. An aromatic liquid-crystalline polyester is provided that can manufacture a film having a small volume expansion by heating. An aromatic liquid-crystalline polyester substantially comprising a repeating structural unit originating in 2-hydroxy-6-naphthoic acid 30 to 80 mol %, a repeating structural unit originating in aromatic diol 35 to 10 mol %, and a repeating structural unit originating in aromatic dicarboxylic acid 35 to 10 mol %.Type: GrantFiled: December 17, 2003Date of Patent: June 20, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Okamoto, Tomoya Hosoda, Shinji Ohtomo
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Patent number: 6932882Abstract: A multi-layer application film formed by laminating at least two resin films, a top layer film (I) being formed from a crosslinkable resin coating composition (A), an under layer film (II) being formed from a thermoplastic resin (B), showing practically no stickiness per se, and having a tensile elongation at breakage in the range of 50 to 1000%, said multi-layer application film being applied onto a plastic substrate.Type: GrantFiled: July 11, 2001Date of Patent: August 23, 2005Assignee: Kansai Paint Co., LTDInventors: Naoya Haruta, Takeshi Tomiyama, Toshio Kondo, Yu Akaki, Osamu Isozaki
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Patent number: 6875243Abstract: Catalysts and processes for preparing polyisocyanates containing isocyanurate groups, and their use, wherein the catalysts are represented by the following formula (1): [Hl?Xm?Fn?]p·[R(4?q)Si(NR1R2)q]r??(I), wherein n=m+l with 1?m/n>0, and l?0, p>0 and r>0, and the ratio p/r is any value, q=1 or 2, and R, R1, R2 and X are as defined.Type: GrantFiled: November 27, 2002Date of Patent: April 5, 2005Assignee: Degussa AGInventors: Michael Ewald, Manuela Windmueller, Waltraud Poersch, Stephan Kohlstruk
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Patent number: 6806340Abstract: Polyurethane coatings which are the reaction product of A) an aliphatic, isocyanate-containing prepolymer having an isocyanate content of 1-8 wt. % and a free monomeric diisocyanate content of less than 2 wt. %, and containing 0.1 to 1.5 moles of per 1000 g of prepolymer of aliphatically bound uretdione and oxadiazinetrione groups, and B) a polyol component B) comprising at least 50 equivalent % of a compound corresponding to the formula HO—X—Y—X—OH where Y represents methylene, ethylene, —C≡C—, cyclohexylene-1,4, -1,3, -1,2, or phenylene-1,4, -1,3, -1,2 and X represents methylene, —OCH2CH2— (the oxygen being bound to the Y), or cyclohexylene-1,4, -1,3, -1,2, and where the equivalent ratio of the free NCO groups to isocyanate-reactive groups is 0.90 to 1.5. The coatings are applied to flexible substrates such as textile or leather by the casting or knife coating process by means of reactive compositions.Type: GrantFiled: August 27, 2002Date of Patent: October 19, 2004Assignee: Bayer AktiengesellschaftInventors: Stefan Groth, Detlef-Ingo Schütze
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Patent number: 6762241Abstract: The invention relates to polyurethane solutions with alkoxysilane structural units, processes for the preparation of polyurethane solutions containing alkoxysilane structural units and the use of polyurethane solutions containing alkoxysilane structural units.Type: GrantFiled: September 21, 2001Date of Patent: July 13, 2004Assignee: Bayer AktiengesellschaftInventors: Harald Blum, Detlef-Ingo Schütze
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Patent number: 6746774Abstract: In order to provide leather with the desired cushioning properties and desirable soft handling properties, especially a grained leather with a grain structure on its upper surface, or a split leather with a surface finish, even if this leather is of minimal thickness, a foam layer is created on the non-visible underside surface of the leather. This foam layer is formed by applying a liquid plastic material containing means to create the foam and is subsequent solidified by removal of the solvent.Type: GrantFiled: September 5, 2000Date of Patent: June 8, 2004Inventor: Philipp Schaefer
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Patent number: 6733877Abstract: In order to create a full grain napa cowhide which exhibits the characteristics with respect to grain pipeyness and water vapor permeability that are required by the automotive and upholstery industries, a finish is applied to the grain side of the full grain leather. The finish includes a pigmented layer with a thickness of between 0.015 mm and 0.04 mm and is formed of a stabilized polyurethane and/or polyacrylate dispersion. The dispersion contains microspheres with a diameter of less than 45 &mgr;m, which form primarily closed cells, and at least 10% open cells by volume. The top side of the layer is provided with a napa embossing. A second layer, placed on the first layer, is formed from a cross-linked polyurethane-based varnish application containing a dulling agent. The leather undergoes a milling treatment.Type: GrantFiled: October 4, 2002Date of Patent: May 11, 2004Inventor: Philipp Schaefer
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Patent number: 6642342Abstract: The present invention relates to thermosetting two-component coating compositions containing A) at least one NCO prepolymer, B) at least one amine-free chain extender, C) at least one catalyst selected from metal 1,3-dicarbonylates and metal-oxo 1,3-dicarbonylates, wherein i) the metal 1,3-dicarbonylate contains as a neutral complex a metal cation with the electron configuration d0 of sub-group 3 or a lanthanide and ii) the metal-oxo 1,3-dicarbonylate contains a metal-oxo cation of sub-group 6 with the electron configuration d0. The present invention also relates to a process for preparing these coating compositions and to coated substrates prepared therefrom.Type: GrantFiled: June 26, 2002Date of Patent: November 4, 2003Assignee: Bayer AktiengesellschaftInventors: Michael Ludewig, Christoph Gürtler, Detlef-Ingo Schütze
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Publication number: 20030194565Abstract: A full-grained milled napa leather is provided on its grain side with a dressing formed from a solidified plastics dispersion. Required leather properties are still ensured and the production process is substantially simplified and more economical. First, the leather, such as cowhide, is subjected on a mechanically untreated grain side to a milling process for at least two hours. This results in a typical napa structure with a natural pebbled grain. Then, a polyurethane dispersion is applied to the grain side containing pigment particles and optionally further additives. Then the hide is allowed to dry. The solidified dispersion forming the dressing has a thickness of, preferably, from 0.05 mm to 0.07 mm.Type: ApplicationFiled: November 21, 2002Publication date: October 16, 2003Inventor: Philipp Schaefer
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Patent number: 6627306Abstract: A soft elastic cushion for use in conjunction with an orthopedic aid has a textile composite comprising at least two layers arranged on the soft elastic cushion. It is possible in this way to secure a textile cover on a soft elastic substrate such as silicone.Type: GrantFiled: May 18, 2001Date of Patent: September 30, 2003Assignee: Thämert Orthopädische Hilfsmittel GmbH & Co. KGInventor: Reinhold Schneider-Nieskens
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Patent number: 6599629Abstract: Coated natural leather, prepared from natural leather having polyurethane coated on its flesh side and having an improved (decreased) measure of deformation, is provided.Type: GrantFiled: July 15, 2002Date of Patent: July 29, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Yery A. Mendoza, Eleni Karayianni
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Patent number: 6599977Abstract: The present invention relates to a process for the preparation of an aqueous dispersion of an anionic polyurethane. According to the invention, a tertiary amine functional urethane polymer or oligomer acts as acid neutralizing agent. The process of the invention comprises the steps of: dispersion of an anionic isocyanate functional polyurethane prepolymer in water in the presence of a tertiary amine functional urethane polymer or oligomer and chain extension of the anionic polyurethane prepolymer with a reactive hydrogen functional material during or after the dispersion in water.Type: GrantFiled: August 28, 2001Date of Patent: July 29, 2003Assignee: Stahl International B.V.Inventors: Laurentius Cornelius Josephus Hesselmans, Josep Oller Chirivella
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Publication number: 20030012960Abstract: Coated natural leather, prepared from natural leather having polyurethane coated on its flesh side and having an improved (decreased) measure of deformation, is provided.Type: ApplicationFiled: July 15, 2002Publication date: January 16, 2003Inventors: Yery A. Mendoza, Eleni Karayianni
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Patent number: 6479612Abstract: A polymer having at least one urea linkage derived by contacting (1) at least one polyisocyanate, or mixture of polyisocyanates, (2) at least one fluorocarbon alcohol, fluorocarbon thiol or fluorocarbon amine, (3) at least one straight or branched chain alcohol, amine or thiol, and (4) at least one alcohol containing a sulfonic acid group or its salt, and then (5) optionally at least one linking agent useful for imparting oil repellency and water repellency to substrates.Type: GrantFiled: June 19, 2000Date of Patent: November 12, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Thomas Wayne Del Pesco, Jack Kirchner, Andrew H. Liu
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Patent number: 6465539Abstract: The invention relates to an elastic coating system with which dry surfaces can be formed by UV curing of constituents containing (meth)acryloyl groups and by subsequent crosslinking of constituents containing NCO groups with constituents containing active hydrogen. The invention also relates to their use of this coating, system for coating, inter alia, components of plastic.Type: GrantFiled: September 11, 2000Date of Patent: October 15, 2002Assignee: Bayer AktiengesellschaftInventors: Jan Weikard, Wolfgang Fischer, Claus Kobusch, Wolfram Küttner
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Patent number: 6384131Abstract: Compositions containing polyurethane dispersions and water reducible resins particularly suited for use as basecoats in low VOC basecoat/clearcoat vehicle coatings.Type: GrantFiled: May 1, 2000Date of Patent: May 7, 2002Assignee: The Sherwin-Williams CompanyInventors: Layton F. Kinney, Sharon K. Golas