Solid Polymer Derived From -n=c=x Reactant And Polyhydroxy Reactant Also Derived From Polyamine Reactant Patents (Class 525/459)
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Patent number: 6740716Abstract: The invention is a two part composition useful for initiating cure of one or more polymerizable monomers which cure when exposed to free radicals comprising in one part an organoboraneamine complex and in a second part an isocyanate which is capable of decomplexing the organoborane complex wherein the ratio of amine nitrogen atoms to boron atoms is greater than 4.0:1.0.Type: GrantFiled: October 30, 2001Date of Patent: May 25, 2004Assignee: Dow Global Technologies Inc.Inventors: Steven P. Webb, Mark F. Sonnenschein
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Patent number: 6646092Abstract: The invention presents a method for manufacturing an amphoteric urethane resin, improving at least one of the performance of cosmetics including this amphoteric urethane resin and the storage stability of the urethane resin.Type: GrantFiled: June 26, 2002Date of Patent: November 11, 2003Assignee: National Starch and Chemical Investment Holding CorporationInventors: Tomohiro Hashimoto, Takeshi Baba, Seiji Asaoka, Tetsuo Sakurai
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Patent number: 6635737Abstract: Low unsaturation, high molecular weight polyols having an unsaturation level below or equal to 0.006 milli-equivalents per gram, and preferably below 0.004 milli-equivalents per gram, and molecular weights of greater than or equal to about 2,000, and preferably between about 2,000 and 10,000, are converted into low unsaturation, high molecular-weight (LUSHMW) polyamines directly by amination reactions. The LUSHMW polyamines produce polymers having elongation, modulus, and tensile characteristics that are substantially better than those of conventional analogous polymers.Type: GrantFiled: May 25, 2001Date of Patent: October 21, 2003Assignee: Williamette Valley CompanyInventors: Donald A. Upson, Omar Tiba, Robert M. Loomis
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Patent number: 6635723Abstract: A description is given of a solvent-free polyurethane dispersion having a high solids content of polyurethane polymer or fillers, which is obtainable by a) allowing a relatively high molecular weight polyol component (A) (i) and, if desired, a low molecular weight polyol component (A) (ii) to react with a polyisocyanate component (B) in the presence or absence of a catalyst to give a polyurethane preadduct, then b) reacting the polyurethane preadduct from step a) with a low molecular weight and anionically modifiable polyol component (A) (iii) containing two or more hydroxyl groups and one or more carboxyl groups to give the corresponding prepolymer, c) allowing the prepolymer from step b) to react with a neutralization component (C) until the carboxyl groups have been completely or partially neutralized, subsequently or simultaneously d) dispersing the neutralized prepolymer from step c) in water which may further comprise a formulation component (F) comprising fillers, pigments, plasticizers, fibrous maType: GrantFiled: October 30, 2000Date of Patent: October 21, 2003Assignee: SKW Bauchemie GmbHInventors: Alois Maier, Franz Wolfertstetter, Herbert Winkelmann, Josef Weichmann, Alfred Kern
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Publication number: 20030176596Abstract: This invention relates to dendritically modified polyurethane, to a process for preparing the dendritically modified polyurethane and to uses thereof.Type: ApplicationFiled: January 27, 2003Publication date: September 18, 2003Inventor: Hannah Kenig-Dodiuk
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Publication number: 20030086975Abstract: Porous polymers having a plurality of openings or chambers that are highly convoluted, with each chamber being defined by multiple, thin, flat partitions are produced by a new gel enhanced phase separation technique. In a preferred embodiment, a second solvent is added to a polymer solution, the second solvent causing the solution to gel. The gel can then be shaped as needed. Subsequent solvent extraction leaves the porous polymeric body of defined shape. The porous polymers have utility as medical prostheses, the porosity permitting ingrowth of neighboring tissue. The present technique also enhances shape-making capability, for example, of bifurcated vascular grafts, which feature a common entrance region but two or more exit regions.Type: ApplicationFiled: November 8, 2001Publication date: May 8, 2003Inventor: Timothy Ringeisen
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Patent number: 6559265Abstract: A polyurethane material, the coatings prepared therefrom, and methods of making the same are provided. A polyurethane material may be formed from components comprising at least one polyisocyanate, at least one active hydrogen-containing material, at least one material having at least one primary or secondary amino group and at least one hydroxyl group, and at least one acid functional material or anhydride having a functional group reactive with isocyanate or hydroxyl groups of other components from which the polyurethane material is formed. The polyurethane can provide improved physical properties, such as chip resistance, when incorporated into a coating composition.Type: GrantFiled: September 21, 2001Date of Patent: May 6, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Paul H. Lamers, Jonathan T. Martz, Lawrence D. Meyers, Carolyn A. Novak, Kurt G. Olson, James P. Rowley, Christopher A. Verardi
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Patent number: 6521702Abstract: The present invention relates to a radiation-curable, aqueous polyurethane emulsion which is prepared by I) reacting A) 40 to 90 wt. % of an isocyanate-reactive component that contains a polyester acrylate containing hydroxyl groups and having an OH content of 40 to 200 mg KOH/g and optionally other isocyanate-reactive compounds other than B) and B) 0.5 to 20 wt. % of one or more monofunctional and/or difunctional isocyanate-reactive compounds that contain cationic or anionic groups, potential cationic or anionic or hydrophilic ether groups, with C) 10 to 50 wt. % of one or more diisocyanates and/or polyisocyanates, II) optionally converting any potential cationic or anionic groups into cationic or anionic groups by salt formation and III) forming a dispersion of the reaction product of A), B) and C) in water and reacting it with D) 0.1 to 10 wt. % of one or more diamines and/or polyamines, wherein the wt.Type: GrantFiled: November 20, 2000Date of Patent: February 18, 2003Assignee: Bayer AktiengesellschaftInventors: Jan Weikard, Erhard Lühmann, Dieter Erdmann, Wolfgang Fischer, Wolfgang Kremer
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Patent number: 6512073Abstract: The present invention relates to novel binders for electrical insulating enamels, comprising at least one hydroxy- and/or amino-functional polyurethane containing urea and/or hydantoin groups, prepared by reacting: a) from 15 to 40 wt. % of an organic polyisocyanate or of a mixture of organic polyisocyanates, b) from 5 to 20 wt. % of at least one aspartic acid ester, and c) from 5 to 50 wt. % of a polyhydroxy compound having a molar weight from 62 to 3000 g/mol, in d) from 25 to 50 wt. % of a solvent or of a solvent mixture and at least one blocked isocyanate component containing ester, imide, amide, and/or urethane groups, at least one organic solvent, and optionally further auxiliary substances and additives whereby the resulting enamels being distinguished by high temperature stability and good solderability.Type: GrantFiled: October 15, 2001Date of Patent: January 28, 2003Assignee: Bayer AktiengesellschaftInventors: Rolf Gertzmann, Lutz Schmalstieg, Jan Mazanek, Bernd Hausstätter
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Patent number: 6495637Abstract: A formulation to produce urethane linkages reacts cyclocarbonate groups with diamines. Aliphatic polyhydroxyl precursor molecules are first epoxidized. The invention does not require complete epoxidation, as it makes use of the un-epoxidized hydroxyl groups of the precursor molecule. These hydroxyl groups are combined with isocyanate groups of prepolymer molecules to form urethane links. The use of prepolymers increases the networking, flexibility, and impact-resistance of the final product. The known formulations for amine hardeners also require complete carbonation of the epoxy groups to form reactive cyclocarbonate groups, which are reacted with diamines to form an amine hardener. In the proposed invention, both cyclocarbonate and epoxy groups are used to combine with the different diamine molecules by making use of the different reactivities of aliphatic, cycloaliphatic, and aromatic amine groups.Type: GrantFiled: February 22, 2001Date of Patent: December 17, 2002Assignee: 3L & T, Inc.Inventor: Leonid Rappoport
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Patent number: 6359059Abstract: Low VOC automotive paint compositions containing reactive urea/urethanes are disclosed. Clearcoat and single stage topcoat formulations are found to be especially useful according to this invention.Type: GrantFiled: March 7, 1997Date of Patent: March 19, 2002Assignee: BASF CorporationInventors: Stewart Shepler, Patrick J. Mormile, Sudhakar Dantiki, David W. Braun
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Patent number: 6306505Abstract: A curable film-forming composition which is resistant to acid etching is provided. The curable film-forming composition comprises: A) a polymer prepared from the following ingredients: 1) an ethylenically unsaturated, beta-hydroxy ester functional monomer; 2) an ethylenically unsaturated, hydroxyalkyl functional monomer; 3) a vinyl aromatic compound; and 4) an alkyl ester of acrylic or methacrylic acid having 1 to 30 carbon atoms in the alkyl group; and B) an etherified aminoplast crosslinking agent. A multi-component composite coating composition is also provided, comprising a base coat deposited from a pigmented film-forming composition and a transparent top coat applied over the base coat in which the transparent coat, or clear coat, is deposited from the curable film-forming composition described above.Type: GrantFiled: August 18, 2000Date of Patent: October 23, 2001Assignee: PPG Industries Ohio, Inc.Inventors: George W. Mauer, Daniel D. Kish, Melissa S. Rush-Batista
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Publication number: 20010008924Abstract: A formulation to produce urethane linkages reacts cyclocarbonate groups with diamines. Aliphatic polyhydroxyl precursor molecules are first epoxidized. The invention does not require complete epoxidation, as it makes use of the unepoxidized hydroxyl groups of the precursor molecule. These hydroxyl groups are combined with isocyanate groups of prepolymer molecules to form urethane links. The use of prepolymers increases the networking, flexibility, and impact-resistance of the final product. The known formulations for amine hardeners also require complete carbonation of the epoxy groups to form reactive cyclocarbonate groups, which are reacted with diamines to form an amine hardener. In the proposed invention, both cyclocarbonate and epoxy groups are used to combine with the different diamine molecules by making use of the different reactivities of aliphatic, cycloaliphatic, and aromatic amine groups.Type: ApplicationFiled: February 22, 2001Publication date: July 19, 2001Inventor: Leonid Rappoport
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Patent number: 6218480Abstract: A formulation to produce urethane linkages reacts cyclocarbonate groups with diamines. Aliphatic polyhydroxyl precursor molecules are first epoxidized. The invention does not require complete epoxidation, as it makes use of the un-epoxidized hydroxyl groups of the precursor molecule. These hydroxyl groups are combined with isocyanate groups of prepolymer molecules to form urethane links. The use of prepolymers increases the networking, flexibility, and impact-resistance of the final product. The known formulations for amine hardeners also require complete carbonation of the epoxy groups to form reactive cyclocarbonate groups, which are reacted with diamines to form an amine hardener. In the proposed invention, both cyclocarbonate and epoxy groups are used to combine with the different diamine molecules by making use of the different reactivities of aliphatic, cycloaliphatic, and aromatic amine groups.Type: GrantFiled: June 16, 1997Date of Patent: April 17, 2001Assignee: MMR Technologies, Inc.Inventor: Leonid Rappoport
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Patent number: 6177523Abstract: The present invention relates to functionalizable and crosslinkable polyurethanes formed of a polyurethane intermediate including one or more ester groups which react with an amine equivalent to form an amide unit. The polyurethane intermediate comprises the reaction product of alkyl ester of dihydroxypolyacid or dimethylolalkanoic acid, a polyoxyalkylene diol and an organic diisocyanate. The polyurethane is reacted with a solution of an amine equivalent and a solvent or an amine. An article of manufacture can be formed from the polyurethane.Type: GrantFiled: July 14, 1999Date of Patent: January 23, 2001Assignee: CardioTech International, Inc.Inventors: Murray H. Reich, John Teffenhart
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Patent number: 6165618Abstract: Curable coating compositions are described comprising(a) a polymer resin comprising carbamate functional groups,(b) a curing agent having groups that are reactive with said functional groups on (a), and(c) a compound having a molecular weight of from 75 to 2000 comprising at least one group of the formula: ##STR1## wherein X is O or NH, R is H or alkyl of 1 to 4 carbon atoms, and either (a), (b), or both (a) and (b) comprise groups that are reactive with said group on (c).Type: GrantFiled: November 3, 1994Date of Patent: December 26, 2000Assignee: BASF CorporationInventors: Walter H. Ohrbom, Gregory G. Menovcik, John W. Rehfuss, Robert J. Taylor
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Patent number: 6136443Abstract: A curable film-forming composition which is resistant to acid etching is provided. The curable film-forming composition comprises:A) a polymer prepared from the following ingredients:1) an ethylenically unsaturated, beta-hydroxy ester functional monomer;2) an ethylenically unsaturated, hydroxyalkyl functional monomer;3) a vinyl aromatic compound; and4) an alkyl ester of acrylic or methacrylic acid having 1 to 30 carbon atoms in the alkyl group; andB) an etherified aminoplast crosslinking agent.A multi-component composite coating composition is also provided, comprising a base coat deposited from a pigmented film-forming composition and a transparent top coat applied over the base coat in which the transparent coat, or clear coat, is deposited from the curable film-forming composition described above.Type: GrantFiled: May 8, 1998Date of Patent: October 24, 2000Assignee: PPG Industries Ohio, Inc.Inventors: George W. Mauer, Daniel D. Kish, Melissa S. Rush-Batista
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Patent number: 6093778Abstract: A composition comprises organoborane polyamine complex and polyol. The composition can form a part of a polymerization initiator system that also includes polyisocyanate. The system can be used to initiate polymerization of acrylic monomer and to form a polyurethane/polyurea acrylic adhesive that has exceptionally good adhesion to low surface energy polymers.Type: GrantFiled: September 8, 1999Date of Patent: July 25, 2000Assignee: 3M Innovative Properties CompanyInventor: Alphonsus V. Pocius
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Patent number: 6060566Abstract: Graft polymers are obtainable by free radical polymerization of(A) monomers or monomer mixtures comprising(a) from 1 to 100% by weight of N-vinylcarboxamides of the formula ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, (b) from 0 to 99% by weight of other monoethylenically unsaturated monomers copolymerizable with the monomers (a) and(c) from 0 to 5% by weight of monomers having at least two ethylenically unsaturated, nonconjugated double bonds in the molecule,in the presence of(B) polymers which contain units of vinyl esters of saturated C.sub.1 -C.sub.Type: GrantFiled: January 21, 1998Date of Patent: May 9, 2000Assignee: BASF AktiengesellschaftInventors: Walter Denzinger, Martin Rubenacker, Claudia Nilz, Primoz Lorencak, Dietmar Monch, Rudolf Schuhmacher, Andreas Stange
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Patent number: 6045872Abstract: The curable coating composition of the invention comprises a film forming component (A) and a wrinkle reducing catalyst (B) comprising a compound of the formula:M.sub.y (L).sub.xwherein M is a metal having an empty or full d orbital and wherein the pk.sub.a of the aqua ion of M is less than or equal to 12; L is a ligand wherein the pk.sub.a of the parent acid is .gtoreq.-10 and is .ltoreq.4; and x is an integer which is a multiple of the charge of M, y is an interger which is a multiple of the charge of L, x and y selected so that ML is charge balanced. Film forming component (A) has first component (a) with a compound having appended thereto at least one carbamate or urea functional group, or a group convertible to a carbamate or urea group, and a second component (b) with a compound reactive with said carbamate or urea groups on component (a).Type: GrantFiled: May 1, 1998Date of Patent: April 4, 2000Assignee: BASF CorporationInventors: Herbert L. Harmon, Donald H. Campbell, Rodney L. Briggs
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Patent number: 6008308Abstract: A composition comprises organoborane polyamine complex and polyol. The composition can form a part of a polymerization initiator system that also includes polyisocyanate. The system can be used to initiate polymerization of acrylic monomer and to form a polyurethane/polyurea acrylic adhesive that has exceptionally good adhesion to low surface energy polymers.Type: GrantFiled: November 7, 1997Date of Patent: December 28, 1999Assignee: 3M Innovative Properties CompanyInventor: Alphonsus V. Pocius
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Patent number: 5994484Abstract: A composition comprises organoborane polyamine complex and polyol. The composition can form a part of a polymerization initiator system that also includes polyisocyanate. The system can be used to initiate polymerization of acrylic monomer and to form a polyurethane/polyurea acrylic adhesive that has exceptionally good adhesion to low surface energy polymers.Type: GrantFiled: October 23, 1997Date of Patent: November 30, 1999Assignee: 3M Innovative Properties CompanyInventor: Alphonsus V. Pocius
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Patent number: 5958988Abstract: A cross-linked polyurethane resin powder includes a powder including particles made from a hard or a semi-hard polyurethane resin. The particles have a superficial portion and an internal portion disposed inside the superficial portion, and involve cross-linked bondings therein. Part of the cross-linked bondings are unchanged, and another part thereof are broken to result in activated groups. At least part of the activated groups are exposed on the superficial portion of the particles. The cross-linked polyurethane resin powder is produced by hydrolyzing a hard or semi-hard polyurethane resin in the presence of water and in a temperature range of from a hydrolysis temperature of the resin to a liquefying temperature thereof, and by applying a predetermined shearing force to the resin. The cross-linked polyurethane resin powder can disperse well in resinous substrates, and can upgrade the physical properties of the resulting recycled products.Type: GrantFiled: November 6, 1996Date of Patent: September 28, 1999Assignee: Toyota Jidosha Kabushiki KaishaInventors: Mitsumasa Matsushita, Takumi Taniguchi, Takashi Ohta, Norio Sato, Yuji Hoshino, Kanemitsu Kondo, Naruaki Abe, Toshiyuki Suzuki
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Patent number: 5919568Abstract: A power coating and a substrate coated with the coating are provided, wherein the coating contains a mixture ofA) a pulverulent polyisocyanate component which is a solid at temperatures of less than 50.degree. C. and a liquid at temperatures above 160.degree. C., of the formula I ##STR1## where R, R.sup.1 and n are as described herein, and B) a pulverulent, organic polyhydroxy component which is a solid at temperatures of less than 50.degree. C. and a liquid at temperatures above 160.degree. C. and having a ratio of secondary to primary OH groups of at least 3.1,wherein components A and B are present in a ratio of equivalents of NCO:OH groups of from 0.5:1 to 1.3:1,and wherein component B is selected from the group consisting of bisphenol A-containing epoxy resin, oligoamides containing secondary hydroxyl groups, and mixtures thereof.Type: GrantFiled: December 12, 1996Date of Patent: July 6, 1999Assignee: Huels AktiengesellschaftInventor: Elmar Wolf
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Patent number: 5880178Abstract: The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound.The composition may also be admixed with water.Type: GrantFiled: November 7, 1996Date of Patent: March 9, 1999Assignee: Elf Atochem North America, Inc.Inventors: Emily Carol Bossert, Wayne Ranbom, William Albert Larkin
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Patent number: 5863627Abstract: A biocompatible, biodurable polycarbonate polyurethane with internal polysiloxane segments and devices made therefrom.Type: GrantFiled: August 26, 1997Date of Patent: January 26, 1999Assignee: CardioTech International, Inc.Inventors: Michael Szycher, Donald Dempsey, Alan Edwards
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Patent number: 5789494Abstract: Methods and compositions for encapsulated polymeric gels swollen with nonaqueous reactive materials are provided. The methods include gel synthesis, swelling of a gel precursor with a first nonaqueous reactive material, and encapsulation of the swollen gel with a second nonaqueous reactive material. Gels precursors may be synthesized from crosslinking polymers, or alternatively, may be formed by crosslinking and polymerizing a monomer starting material. An accelerator may be utilized to facilitate swelling of the gel precursor with the first nonaqueous reactive material. Foams and composites may also be swollen with the first nonaqueous reactive material. The swollen gel is then contacted with a second nonaqueous reactive material such that an encapsulation layer is formed thereby. The encapsulated gels may be stored for subsequent use.Type: GrantFiled: June 7, 1995Date of Patent: August 4, 1998Assignee: Medlogic Global CorporationInventors: Barry Joseph Hand, E. C. Lupton, Jr., Lev Bromberg, Xiaohong Yu
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Patent number: 5756632Abstract: A biocompatible, hydrophilic, segmented block polyurethane copolymer which comprises 5 to 45 wt % of a hard segment and 95 to 55 wt % of a soft segment selected from a hydrophilic, hydrophobic and amphipathic oligomer is disclosed. The copolymer is capable of forming a non-porous, semi-permeable film of a tensile strength greater than 300 and up to 10,000 psi, and has an ultimate elongation greater than 300% and up to 1,500% and a water absorption such that the sum of the volume fraction of absorbed water and the hydrophilic volume fraction of the soft segment exceeds about 100% and is up to about 2,000% of the dry polymer volume. The film is permeable to cell nutrients and waste molecules of up to about 6,000 to 600,000 molecular weight and is substantially impermeable to cells and particulate matter. A non-porous, semi-permeable, biocompatible film is formed from the block copolymer of the invention in the form of a flexible sheet or a hollow fiber.Type: GrantFiled: June 2, 1995Date of Patent: May 26, 1998Assignee: The Polymer Technology GroupInventors: Robert S. Ward, Kathleen A. White
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Patent number: 5741867Abstract: The invention relates to a process for adjusting the viscosity of highly concentrated elastane solutions by reaction of the solution with secondary aromatic amines in order to produce spinning solutions for the dry or wet spinning of elastane fibres.Type: GrantFiled: January 10, 1996Date of Patent: April 21, 1998Assignee: Bayer Faser GmbHInventors: Ulrich Reinehr, Gunter Turck, Tilo Sehm, Wolfgang Anderheggen, Toni Herbertz, Gino Antolini
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Patent number: 5739185Abstract: The present invention provides a cationic electrodepositable coating composition comprising:?I! a polyurethane-modified epoxy resin-amine adduct obtained by a reaction of:(A) a polyurethane compound having one terminal isocyanate group in the molecule, obtained by a reaction of (a) a polyhydroxy compound having a number-average molecular weight of 50-8,000, (b) a polyisocyanate compound, and (c) a compound having one active hydrogen atom in the molecule,(B) a bisphenol type epoxy resin having at least two epoxy groups in the molecule, and(C) an active-hydrogen-containing amine compound, and ?II! a nonionic film-forming resin.Type: GrantFiled: August 16, 1995Date of Patent: April 14, 1998Assignee: Kansai Paint Co., Ltd.Inventors: Hidehiko Haneishi, Masanobu Kudoh, Koji Kamikado
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Patent number: 5719237Abstract: Coatings are described derived from a curable coating composition comprising:(a) a non-polymeric organic compound having a molecular weight of from 75 to 2000 comprising a plurality of carbamate active hydrogens, and(b) a second component comprising a compound having a plurality of functional groups that are reactive with said carbamate active hydrogens.Type: GrantFiled: November 3, 1994Date of Patent: February 17, 1998Assignee: BASF CorporationInventors: John W. Rehfuss, Walter H. Ohrbom, Donald L. St. Aubin, Robert J. Taylor
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Patent number: 5686544Abstract: A composition comprises organoborane polyamine complex and polyol. The composition can form a part of a polymerization initiator system that also includes polyisocyanate. The system can be used to initiate polymerization of acrylic monomer and to form a polyurethane/polyurea acrylic adhesive that has exceptionally good adhesion to low surface energy polymers.Type: GrantFiled: August 11, 1995Date of Patent: November 11, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventor: Alphonsus V. Pocius
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Patent number: 5635542Abstract: The present invention relates to a process for the production of hydroxyl-group-containing compounds suitable for the polyisocyanate polyaddition process from polyurea and/or polyurethane polyurea wastes by treating polyurea and/or polyurethane polyurea wastes with diols and/or polyols at temperatures from 160.degree. to 260.degree. C., the water present in the reaction vessel preferably being removed by distillation during the heating-up phase, characterized in that 1,3-dicarbonyl compounds are added to the reaction mixture before or during the reaction.Type: GrantFiled: June 16, 1995Date of Patent: June 3, 1997Assignee: Bayer AktiengesellschaftInventors: Thomas Munzmay, Werner Rasshofer, Walter Meckel
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Patent number: 5623020Abstract: This invention provides a novel cross-linked polyaniline derivative soluble or capable of swelling in general organic solvents, which forms an elastic self-standing film or fibers. The polyaniline derivative substantially comprises a polyaniline having number average molecular weight in a range of from 2,000 to 500,000 represented by the following formula (I) as the main polymer chain, ##STR1## wherein m and n are 0 or an integer of at least 1, m/(m+n)=0-1, and m+n=10-5,000, and cross-linking units represented by the following formula (II) ##STR2## wherein X is a direct bond, a substituted or unsubstituted divalent C.sub.1 -C.sub.30 aliphatic hydrocarbon group, a substituted or unsubstituted divalent aromatic hydrocarbon group, a divalent polysiloxane group or a group derived therefrom, or a divalent group derived from a compound having 2 or more repeating structural units, y.sup.1 and y.sup.Type: GrantFiled: March 26, 1992Date of Patent: April 22, 1997Assignee: Tomoegawa Paper Co., Ltd.Inventor: Osamu Oka
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Patent number: 5610229Abstract: The invention relates to a process for adjusting the viscosity of highly concentrated elastane solutions by reaction of the solution with secondary aromatic amines in order to produce spinning solutions for the dry or wet spinning of elastane fibers.Type: GrantFiled: May 7, 1996Date of Patent: March 11, 1997Assignee: Bayer Faser GmbHInventors: Ulrich Reinehr, Gunter Turck, Tilo Sehm, Wolfgang Anderheggen, Toni Herbertz, Gino Antolini
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Patent number: 5589563Abstract: The present invention relates to novel polymeric compositions of matter and their use. Said polymeric compositions of matter are surface active endgroup-containing polymers that comprise a linear base polymer having covalently bonded surface active endgroups of a nature and present in an amount such that said polymers have a surface or interfacial tension that differs by at least 1 dyne/cm from the surface or interfacial tension of an otherwise identical polymer that does not contain said covalently bonded surface active endgroups. The novel linear polymers according to the present invention are particularly suitable for use in the manufacture of medical devices, and especially of medical devices intended to be used in contact with bodily fluids such as blood. Examples of such medical devices include catheters and artificial hearts.Type: GrantFiled: April 1, 1994Date of Patent: December 31, 1996Assignee: The Polymer Technology GroupInventors: Robert S. Ward, Kathleen A. White
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Patent number: 5574127Abstract: Associative thickeners of the present invention are water soluble polymer compositions that have a backbone of poly(acetal- or ketal-polyether) with ends that are capped with hydrophobic groups. They are prepared by copolymerizing an alpha, omega-diol, -di,thiol or-diamino polyether with a gem-dihalide compound in the presence of a base to form an alpha, omega-diol, -dithiol or -diamino poly(acetal- or ketal-polyether) which in turn is reacted with hydrophobic reagents to form the final product. These associative thickeners are used in film forming coating compositions, such as latex paints.Type: GrantFiled: April 5, 1995Date of Patent: November 12, 1996Assignee: AqualonInventor: Arjun C. Sau
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Patent number: 5552497Abstract: A method of preparing a carbamate-functional acrylic polymer is described, comprising the steps of:(A) preparing a mixture comprising:(1) one or more acrylic monomers comprising hydroxy-functional groups or groups that can be converted to hydroxy functional groups,(2) optionally, one or more other addition polymerizable monomers, and(3) a carbamate compound, and(B) heating said mixture in the presence of a free radical initiator and an esterification catalyst, thereby forming a carbamate-functional acrylic polymer.Type: GrantFiled: December 29, 1994Date of Patent: September 3, 1996Assignee: BASF CorporationInventors: Robert J. Taylor, John W. Rehfuss, Joseph Borst, Paul Lessek, Donald L. St. Aubin
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Patent number: 5512639Abstract: Curable compositions are disclosed comprising:(A) carbamate-functional compound that is the reaction product of a mixture comprising:(1) a monomeric polyisocyanate, and(2) a compound comprising a group that is reactive with isocyanate and a carbamate group or group that can be converted to carbamate, and(B) a compound having a plurality of functional groups that are reactive with carbamate groups on said carbamate-functional compound.Type: GrantFiled: July 28, 1993Date of Patent: April 30, 1996Assignee: BASF CorporationInventors: John W. Rehfuss, Walter H. Ohrbom
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Patent number: 5483012Abstract: This invention provides a cationic electrodepositable coating composition comprising:(A) 30 to 1% by weight of a high-molecular-weight polyurethane resin prepared by reacting (a) an organic polyisocyanate, (b) a high-molecular-weight polyol, and (c) a diol having at least one tertiary amino group, the high-molecular-weight polyurethane resin (A) having a SP value of 9.5 to 12.0 and a number average molecular weight of at least 15,000; and(B) 70 to 99% by weight of an epoxy-type cationic electrodepositable resin.Type: GrantFiled: July 28, 1994Date of Patent: January 9, 1996Assignees: Kansai Paint Company Limited, Sanyo Chemical Industries, Ltd.Inventors: Susumu Midogohchi, Masafumi Kume, Takahisa Kasukawa, Tetsuya Takasu, Hiroshi Nishimoto
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Patent number: 5461091Abstract: A heat curable coating composition, particular for cathodic electrocoating, comprises(A) from 50 to 95% by weight of a chain or step growth polymerization product having functional groups and(B) from 50 to 5% by weight of a mixture of polymethylenepolyphenyl isocyanates which contains less than 25% of diphenylmethane diisocyanates.Type: GrantFiled: September 9, 1994Date of Patent: October 24, 1995Assignee: BASF AktiengesellschaftInventors: Gerhard Hoffmann, Dieter Faul, Klaus Huemke, John A. Gilbert
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Patent number: 5428123Abstract: A biocompatible, hydrophilic, segmented block polyurethane copolymer which comprises 5 to 45 wt % of a hard segment and 95 to 55 wt % of a soft segment selected from a hydrophilic, hydrophobic and amphipathic oligomer is disclosed. The copolymer is capable of forming a non-porous, semi-permeable film of a tensile strength greater than 300 and up to 10,000 psi, and has an ultimate elongation greater than 300% and up to 1,500% and a water absorption such that the sum of the volume fraction of absorbed water and the hydrophilic volume fraction of the soft segment exceeds about 100% and is up to about 2,000% of the dry polymer volume. The film is permeable to cell nutrients and waste molecules of up to about 6,000 to 600,000 molecular weight and is substantially impermeable to cells and particulate matter. A non-porous, semi-permeable, biocompatible film is formed from the block copolymer of the invention in the form of a flexible sheet or a hollow fiber.Type: GrantFiled: April 23, 1993Date of Patent: June 27, 1995Assignee: The Polymer Technology GroupInventors: Robert S. Ward, Kathleen A. White
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Patent number: 5422402Abstract: A process of treating suitable synthetic polymers comprising the steps of (a) where appropriate, activating the surface to be treated, and, if necessary, providing spacer groups thereon; and (b) treating the surface with a compound of Formula (I), ##STR1## wherein Y' is an alkylene group optionally containing an aryl group, a poly(ethylene glycol) or a glycerol group; R may be the same or different and each is a straight or branched C.sub.1-4 alkyl group, n is from 1 to 4 and X is a group which reacts with functional groups of the polymer. Polymeric surfaces and materials thus produced and shaped articles containing such surfaces and materials.Type: GrantFiled: September 23, 1992Date of Patent: June 6, 1995Assignee: Biocompatibles LimitedInventors: Roderick W. J. Bowers, Stephen A. Jones, Peter W. Straford, Michael J. Driver
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Patent number: 5373043Abstract: This invention relates to a solid particulate polymer comprising 1) a backbone containing (a) a plurality of moieties selected from the group consisting of alkylene, arylene, aralkylene, alkylarylene, cycloalkylene, alkyleneoxy, and polyalkyleneoxy; (b) a plurality of moieties selected from the group consisting of internal urea, thiourea, biuret and dithiobiuret; and 2) end groups selected from the group consisting of internal urea, thiourea, biuret and dithiobiuret. The particulate polymer dispersions can be used for preparing reinforced polymer matrices, especially where the matrix comprises urethane and/or urea linkages.The invention allows for the preparation of a particulate polymer without using organic polyisocyanate.Type: GrantFiled: August 19, 1993Date of Patent: December 13, 1994Assignee: The Dow Chemical CompanyInventors: Robert F. Harris, Michael R. Savina, Michael D. Joseph
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Patent number: 5373069Abstract: Curable compositions are disclosed comprising:(A) a carbamate-functional polymer that is the reaction product of a mixture comprising:(1) a polymer that is the reaction product of a mixture comprising:(a) a polyisocyanate and(b) an active hydrogen-containing chain extension agent, and(2) a compound comprising a group that is reactive with said polymer (A) (1) and a carbamate group or group that can be converted to carbamate, and(B) a compound having a plurality of functional groups that are reactive with carbamate groups on said carbamate-functional polymer.Type: GrantFiled: July 28, 1993Date of Patent: December 13, 1994Assignee: BASF CorporationInventors: John W. Rehfuss, Walter H. Ohrbom
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Patent number: 5354808Abstract: Ungelled, aqueous dispersions of silane-terminated partially crosslinked polyurethane polymers are described which are the reaction product of A) an isocyanate-containing prepolymer formed from: (i) a molar excess of organic polyisocyanate sufficient to promote substantially equal access to isocyanate groups; (ii) active hydrogen-containing material; (iii) sterically hindered amines; (iv) emulsifying monomer; B) chain-extending monomer; C) an organic compound having a pKb of at most about 7; and D) a silane coupling agent represented by the general formula ASi(OR.sup.2).sub.3 and present in an amount sufficient to partially crosslink the polyurethane resin but insufficient to gel the dispersion, provide advantages over previously known polyurethanes used as surface coatings. The hindered amine allows surface coatings incorporating the polyurethanes to be easily removed by aqueous compositions having pH between about 2 and 5. Methods of making the prepolymers, polymers, and dispersions are also presented.Type: GrantFiled: December 8, 1992Date of Patent: October 11, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Fidelis C. Onwumere, Kurt C. Frisch, Jr.
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Patent number: 5338763Abstract: Compounds containing alcoholic hydroxyl groups suitable as a starting material for the isocyanate polyaddition process by the alcoholysis of polyisocyanate polyaddition products are produced. Polyurethane urea or polyurea waste products having a molar ratio of urea groups to urethane groups of from 1:20 to 1:0 are heated in size reduced form to temperatures of from 120.degree. to 250.degree. C. together with B) polyhyhdric alcohols in the molecular weight range of from 62 to 250 in a ratio by weight of A:B of from 3:1 to 1:10. At least 10% of the polyhydric alcohol B put into the process is subsequently removed by distillation under reduced pressure. A total of up to 1000% by weight, based on the weight of polyurethane urea or polyurea waste A, of one or more polyhydroxy compounds having a molecular weight above 250 which is (are) not volatile under the distillation conditions may optionally be added to the mixture before and/or after removal of the excess alcohol B by distillation.Type: GrantFiled: December 4, 1992Date of Patent: August 16, 1994Assignee: Bayer AktiengesellschaftInventors: Thomas Munzamy, Werner Rasshofer, Karl-Heinz Dorner, Ulrich Limna
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Patent number: 5334670Abstract: An elastomer is molded by a reaction injection molding of polyurethane resins, polyurea resins, polyurethane/urea resins and polyurea/amide resins in the presence of an internal release agent which is a polyester condensate of a saturated or unsaturated fatty acid having a hydroxy group produced by transesterification or a molecular end-aminated or iminated polyester condensate. The elastomer has a good releasing property and a good coating property.Type: GrantFiled: December 15, 1993Date of Patent: August 2, 1994Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Yuji Uchida, Yoshio Yoshida, Toshikazu Kaneda, Toshiaki Moriya, Tsutomu Kumazawa
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Patent number: 5306764Abstract: Amine-containing, water dispersible polyurethanes made by the following process: (1) in a reactive diluent such as acrylate, methacrylate, acrylonitrile monomer, low viscosity epoxy compound or epoxy resin, or mixture thereof, using an excess amount of polyisocyanate to react with polyol to form NCO-terminated urethane prepolymer; (2) adding hydroxy alkyl acrylate or hydroxy alkyl methacrylate monomer to react with the prepolymer in step (1) to convert its -NCO end group into alkyl acrylate or alkyl methacrylate end group; and (3) using an excess amount of polyamine to react with the alkyl (meth)acrylate-terminated prepolymer in step (2) and the reactive diluent and the residual hydroxy-containing monomer in step (2), if any. The polyurethane can be mixed with a crosslinking agent having multi-epoxy or blocked polyisocyanate functionalities, to prepare a stable aqueous coating composition.Type: GrantFiled: September 3, 1992Date of Patent: April 26, 1994Assignee: China Technical Consultants Inc.Inventor: Der-Shyang Chen
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Patent number: 5283297Abstract: An artificial hair made of a fibers comprising a poly-.alpha.-amino acid derivative insoluble to water and alcohols and represented by one of the following general formulae (1)-(4): ##STR1## providing that R in each of the above formula (1)-(4) is R.sup.a, R.sup.b and R.sup.c represented, respectively, by the following general formula (5), (6) or (7): ##STR2## or made or polyamino acid urethane fiber comprising a copolymer of an amino acid N-carboxy anhydride and a polyurethane, in which the copolymer is subjected to an amidation reaction with an organic diamine and an organic amine having amino groups and mercapto groups or disulfide groups and to shaping into a fibrous form.The artificial hair has a dyeability, shape retainability, natural and soft and flexible feeling, excellent tough and brushing property, as well as has natural color and gloss and toughness like that natural protein fiber.Type: GrantFiled: February 7, 1992Date of Patent: February 1, 1994Assignee: Aderans Co., Ltd.Inventors: Yasuyoshi Miyachi, Nobuo Ito, Masako Koyama