N=c=x Reactant Has Ionic Group Attached Thereto, E.g., Carboxyl Sulfonic, Etc. Patents (Class 524/840)
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Patent number: 6090886Abstract: Finely dispersed polyurethane polyurea crosslinked particles having an average particle diameter of not greater than 1 .mu.m and essentially comprising (A) an ion-forming polyol, (B) a polyisocyanate, and (C) a polyamine; and a process for producing the same are disclosed. The present invention provides finely dispersed polyurethane polyurea crosslinked particles and a process for producing the same; the dispersed particles being firmly crosslinked and having an average particle diameter of not greater than 1 .mu.m, and the particle dispersion having high preservation stability, preventing the core substance, if encapsulated therein, from undergoing denaturation, and exhibiting per se film-forming properties to provide a film excellent in water resistance, solvent resistance and chemical resistance.Type: GrantFiled: February 14, 1996Date of Patent: July 18, 2000Assignee: Dainippon Ink & Chemicals, Inc.Inventors: Hidetoshi Konno, Mitsuo Kase, Ichiro Muramatsu, Noboru Okoshi
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Patent number: 6087444Abstract: A water reducible polyurethane resin for use in coating compositions is provided with humidity resistance at relatively low cost by employing a urethane prepolymer which is the reaction product of (i) a polyisocyanate, (ii) a polyhydroxy compound which is the reaction product of an organic acid and an epoxy compound, at least one of which includes a hydrocarbon group of at least six carbon atoms, and (iii) a monomer having an anionic group and functionality reactive with isocyanate. Preferred embodiments employ C.sub.36 dimer diacid and the propylene oxide ester of neodecanoic acid to make the polyhydroxy compound.Type: GrantFiled: September 20, 1996Date of Patent: July 11, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Shanti Swarup, Anbazhagan Natesh, Gina M. Terrago, Cathy A. Taylor
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Patent number: 6087440Abstract: A polyurethane/urea/thiourea latex having a narrow molecular weight polydispersity and sub-micron particle size can be prepared by first preparing a high solids (between about 65% and 74% solids) latex of a polyurethane/urea/thiourea prepolymer, then contacting the emulsion with a chain-extending reagent under such conditions to form the polymer latex.Type: GrantFiled: February 16, 1999Date of Patent: July 11, 2000Assignee: The Dow Chemical CompanyInventors: Kenneth W. Skaggs, Rick L. Tabor, Paul T. Louks, Wayne R. Willkomm
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Patent number: 6084051Abstract: The present invention relates to aqueous polyurethane-urea dispersions having a resin solids content of at least 35 wt. % and a pH of at least 7.5 which are prepared bya) forming an isocyanate-terminated prepolymer by reacting a difunctional polyol having a molecular weight of 500 to 6000, a low molecular weight alcohol, a diisocyanate and/or triisocyanate and an isocyanate-reactive compound which has an acid group,b) neutralizing 65% to 95% of the acid groups prior to dispersing the prepolymer in water,c) dispersing the neutralized prepolymer in water,d) chain extending the isocyanate groups with water to form a polyurethane-urea, ande) after completion of the chain extending reaction adding additional neutralizing agent to provide a total amount of neutralizing agent that is sufficient to neutralize at least 115% of the acid groups of component D),wherein the polyurethane-urea contains 1.0 to 4.0%, based on resin solids, of the isolated urea groups.Type: GrantFiled: May 25, 1999Date of Patent: July 4, 2000Assignees: Bayer Aktiengesellschaft, Bayer CorporationInventors: Harald Blum, Wieland Hovestadt, Lothar Kahl, Douglas A. Wicks
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Patent number: 6084020Abstract: Articles of manufacture are provided with a low surface energy, permanently non-stick, non-fouling and ice-phobic surface by a system of coating comprising applying a primary coating having a surface energy of 22-28 dynes/cm.sup.2 comprising a novel polymeric material having non-stick and hardness properties and then applying a top coating having lower surface energy of from about 18-21 dynes/cm.sup.2 comprising a siliconic polymer and interdigitating means to make the top coating permanent, the means preferably comprising a bi- or polyfunctional organic compound adapted to wet the surface of the primary coating and chemically or physically bond thereto and to couple to the siliconic polymeric substance in the top coating. The coated substrates are resistant to marking by graffiti, to adherence by marine fouling organisms, and frozen ice on the surface is easily removed.Type: GrantFiled: July 9, 1997Date of Patent: July 4, 2000Assignee: Decora, IncorporatedInventors: John Ralph Smith, Nissim N. Garti
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Patent number: 6080812Abstract: A water-dispersible blocked isocyanate composition, including an isocyanate group-terminated precursor and a blocking agent for blocking a free isocyanate group of the precursor, wherein the precursor includes at least an organic diisocyanate, a low-molecular glycol, and a hydrophilic surfactant having at least one active hydrogen group. The precursor also has an isocyanurate ring structure; an average functional group number (f) satisfying 2.0.ltoreq.f.ltoreq.4.2; a low-molecular glycol content (X) satisfying 0.5 wt. %.ltoreq..times..ltoreq.15 wt. %; and a hydrophilic surfactant content(Y) satisfying 0.1 wt. %.ltoreq.Y.ltoreq.50 wt. %.Type: GrantFiled: August 13, 1999Date of Patent: June 27, 2000Assignee: Nippon Polyurethane Industry C. Ltd.Inventors: Takeshi Morishima, Shogo Itoh, Shin Konishi
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Patent number: 6077611Abstract: The combination of an aqueous silicone release emulsion selected from the group of aqueous silicone emulsions consisting of condensation curable and addition curable silicone emulsions with an aqueous polyurethane emulsion creates a mixed release emulsion that cures to a linerless release coating which is printable when applied to a substrate such as paper.Type: GrantFiled: September 30, 1997Date of Patent: June 20, 2000Assignee: General Electric CompanyInventors: Roy M. Griswold, Melania I. Lapinski, Michael J. O'Brien
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Patent number: 6077897Abstract: A process for producing a WPU-PEO based composite electrolyte is disclosed. The process includes steps of a) providing a polyurethane material as a matrix material; b) dispersing the matrix material in a first solvent and mixing PEO in the same solvent to form a dispersion solution; c) drying the dispersion solution to form a thin composite film of WPU-PEO as a matrix of the polymeric electrolyte; and d) adding a component of an anhydrous liquid electrolyte into the matrix to form the WPU-PEO based composite electrolyte. The fabricated thin film electrolyte has a good conductivity (up to 10.sup.-2 .about.10.sup.-3 S/cm at room temperature) and can be suitably used in cells, e.g. lithium ion batteries, lithium batteries, and electrochromic devices. The feasibility of the use of a mixture of various WPU, cross-linked WPU, and WPU based composite electrolytes in lithium ion batteries, lithium batteries, and electrochromic devices is also disclosed.Type: GrantFiled: December 1, 1997Date of Patent: June 20, 2000Inventors: Ten-Chin Wen, Tsung-Tien Cheng
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Patent number: 6077901Abstract: The present invention relates to aqueous compositions containing a mixture ofa) 50 to 95% by weight, based on the resin solids content of components a) and b), of an aqueous polyurethane/urea dispersion containing 0.5 to 6% by weight, based on the weight of the polyurethane/ureas, of alkoxysilane groups (calculated as Si, MW 28) andb) 5 to 50% by weight, based on the resin solids content of components a) and b), of a water reducible oligomer which is substantially free from isocyanate groups and has an alkoxysilane group content (calculated as Si, MW 28) of 1 to 6% by weight, based on the weight of the oligomer, and wherein the alkoxysilane groups are incorporated as the reaction product ofI) a polyisocyanate component having a minimum average functionality of 2.4 and containing at least 50% by weight of polyisocyanate adducts andII) a compound containing amino and alkoxysilane groups. The present invention also relates to coatings, sealants and adhesives prepared from these aqueous compositions.Type: GrantFiled: May 6, 1999Date of Patent: June 20, 2000Assignee: Bayer CorporationInventors: Richard R. Roesler, Lyubov K. Gindin
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Patent number: 6075081Abstract: A powder-free coagulant for use in latex dipping processes comprises a salt stable dispersion of a polychloroprene rubber and an inorganic metal salt. Optionally the coagulant will also contain a powder-free release agent, to aid release of the dipped article from the former, comprising a polypropylene wax emulsion and a cationic surfactant.Type: GrantFiled: December 3, 1997Date of Patent: June 13, 2000Assignee: Ansell Healthcare Products Inc.Inventors: Jeffery G. Nile, Stanley J. Gromelski, Nevin D. Gerber
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Patent number: 6063861Abstract: The present invention relates to storage stable, aqueous polyurethane-polyacrylate hybrid dispersions, which are self crosslinkable at room temperature and contain A) 10 to 95 wt. %, of a polyurethane dispersion,B) 5 to 90 wt. %, of a polymer prepared in the presence of component A) from a mixture of vinyl monomers containing 0.5 to 20 wt. %, based on the total resin solids content of the hybrid dispersion, of a vinyl monomer containing acetoacetoxy groups andC) an at least difunctional primary or secondary amine, which is present in an equivalent ratio of amino groups to acetoacetoxy groups of 0.5:1 to 1.1:1,in which the wt. % of components A) and B) add up to 100, based on the total weight of components A) and B).The present invention also relates to one-component coating compositions containing these hybrid dispersions as binders and to substrates coated with these coating compositions.Type: GrantFiled: November 25, 1998Date of Patent: May 16, 2000Assignee: Bayer AktiengesellschaftInventors: Christoph Irle, Harald Blum, Wolfgang Kremer, Rolf Roschu
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Patent number: 6063860Abstract: A water dispersible blocked polyisocyanate of formula (I) R--Y.sub.m, where R is an m valent group comprising an aliphatic, cycloaliphatic, heterocyclic or aromatic group and comprising at least three consecutive ethylene oxide groups or at least one residue of a polyhydroxy carboxylic acid, and each group Y, which may be the same or different, is a group of formula (II), ##STR1## where each R.sup.1 is the same or different when n is more than 1 and each R.sup.1 is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO.sub.2, halogen or a group --C(O)--O--R.sup.2 where R.sup.2 is hydrogen or an alkyl group; n is 0, 1, 2 or 3; and m is an integer of 2 or more.Type: GrantFiled: April 29, 1998Date of Patent: May 16, 2000Assignee: Baxenden Chemicals LimitedInventors: Ian Kevin Rimmer, Richard Alan Spencer
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Patent number: 6063859Abstract: A coating composition for a golf ball which comprises a non-yellowing polyisocyanate and a hydroxyl group-containing polyester obtained by reacting a polyhydric alcohol, at least a part of which has an alicyclic structure in the molecule, with a polybasic acid component, and a golf ball whose body is coated with the above coating composition. When said coating composition is used, a high durability is achieved even when a white enamel coating is omitted from the lower layer part of the coating and the coating step can be shortened.Type: GrantFiled: July 22, 1997Date of Patent: May 16, 2000Assignees: Cashew Co., Ltd., Bridgestone Sports Co., Ltd.Inventors: Shuichi Yamamoto, Etsuji Akimaru, Shigeru Noguchi, Takashi Ohira, Hiroto Sasaki, Susumu Muta
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Patent number: 6060541Abstract: The present invention is an imaging element which includes a support, at least one image forming layer superposed on the support and a protective overcoat superposed on the support. The protective overcoat is farthest from the support. The protective overcoat is formed by the coating and subsequent drying of a coating composition of an aqueous medium having therein a water dispersible siloxane-containing polyurethane.Type: GrantFiled: August 19, 1998Date of Patent: May 9, 2000Assignee: Eastman Kodak CompanyInventors: Charles C. Anderson, Brian A. Schell, Yongcai Wang, Mario D. DeLaura
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Patent number: 6057400Abstract: Compositions containing polyurethane dispersions and water reducible resins particularly suited for use as basecoats in low VOC basecoat/clearcoat vehicle coatings.Type: GrantFiled: December 23, 1998Date of Patent: May 2, 2000Assignee: The Sherwin-Williams CompanyInventors: Layton F. Kinney, Sharon K. Golas
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Patent number: 6048926Abstract: A composition containing an unblocked monomeric diisocyanate finely dispersed an aqueous dispersion of at least one organic polyhydroxy compound. The composition may be used to prepare aqueously disperse two component polyurethane coatings where the diisocyanate functions as a curing agent and the polyhydroxy compound serves as a binder agent. In the composition, the ratio of hydroxyl groups in the polyhydroxy compound to the isocyanate groups in the diisocyanate is 0 5:1 to 5:1. The composition may be used to apply polyurethane coatings to substrates.Type: GrantFiled: October 28, 1997Date of Patent: April 11, 2000Assignee: Huels AktiengesellschaftInventors: Klaus Janischewski, Dirk Reichel
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Patent number: 6034154Abstract: The present invention provides polymer fine particles for a jet ink, each polymer fine particle containing a colorant, wherein the polymer fine particles have an average particle diameter in the range of 5 to 700 nm, a maximum particle diameter of at most 1000 nm, and a particle size distribution, at m value of shape parameter according to the Weibull distribution, of at least 1.3, and wherein the polymer fine particles are able to form a coating film at room temperature.Type: GrantFiled: February 9, 1996Date of Patent: March 7, 2000Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Mitsuo Kase, Hidetoshi Konno, Isao Tabayashi, Ichiro Muramatsu
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Patent number: 6031028Abstract: This invention provides a cationic electrodeposition coating composition comprising(A) a resin prepared by reacting an epoxy- or carboxyl-containing acrylic polymer, a bisphenol compound and a bisphenol diglycidyl ether-type epoxy resin to produce an epoxy-containing resin and introducing thereinto cationic groups and(B) a hydroxyl- and amino-containing acrylic resin, the resins (A) and (B) being crosslinked and cured by urethanation reaction with (C) an isocyanate crosslinking agent component. The cationic electrodeposition coating composition of the invention is excellent in curability and in corrosion resistance of the cured coating film.Type: GrantFiled: March 10, 1998Date of Patent: February 29, 2000Assignee: Kansai Paint Company, LimitedInventors: Yutaka Iino, Katsuhisa Sugisaki, Koji Kamikado
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Patent number: 6031041Abstract: A polyurethane hybrid dispersion comprising a carboxylated polyurethane dispersion and a functionalized polymer. The functionalized polymer is the emulsion polymerization product of an ethylenically unsaturated monomer and from 0.1 to 5 pphm of a ureido functional comonomer, wherein the functionalized polymer is prepared in the presence of the carboxylated polyurethane dispersion. he polyurethane hybrid dispersions of the invention exhibit improved wet adhesion to alkyd substrates. Moreover, the polyurethane hybrid dispersions provide the treated substrates with improved solvent resistance.Type: GrantFiled: October 14, 1998Date of Patent: February 29, 2000Assignee: National Starch and Chemical Investment Holding CorporationInventors: Jocelyn K. Chung, Sharon P. Lee, Rajeev Farwaha
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Patent number: 6031045Abstract: A method for the preparation of sulfonated polymer compositions wherein water dispersible isocyanate-terminated polyurethane prepolymers are reacted in the presence of aqueous polyvinyl dispersions which may contain active hydrogen atoms. The invention is further directed to a water-based sulfonated polyurethane polyvinyl hybrid latex wherein a sulfonated polyurethane is used as a seed for the polymerization of ethylenically unsaturated monomers and a method for preparing the same. The inventive compositions develop interpenetrating polymer networks or may form core-shell type structures, and are characterized as having enhanced mechanical and adhesion properties.Type: GrantFiled: August 12, 1997Date of Patent: February 29, 2000Assignee: H. B. Fuller Licensing & Financing, Inc.Inventors: Yi Wei, Youlu Duan, Yuduo Zhu
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Patent number: 6031044Abstract: A polyurethane which is substantially self-dispersible in water and is obtainable by reactinga) at least one polyisocyanate withb) at least one polyol andc) at least one photoinitiator of the general formula I ##STR1## where R is a radical of the formula II ##STR2## or is --CR.sup.7 R.sup.8 R.sup.9, P(.dbd.O)(R.sup.10).sub.2 or SO.sub.2 R.sup.11,the number-average molecular weight M.sub.n of the polyurethane being greater than 2700, and its use. The invention also relates to aqueous polyurethane resin dispersions and coating compositions comprising the novel polyurethanes, and to their use.Type: GrantFiled: December 18, 1997Date of Patent: February 29, 2000Assignee: BASF AktiengesellschaftInventors: Nicolas Kokel, Harald Larbig, Klaus Menzel, Erich Beck, Wolfgang Reich, Guido Voit
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Patent number: 6025433Abstract: To offer thermosetting paint compositions resistant to yellowing to brass, which give paint films of excellent resistance to yellowing due to brass, low-temperature curability, weather resistance, resistance to yellowing after stoving, acid resistance, scratch resistance, solvent resistance, adhesion and appearance. Thermosetting paint compositions, which are thermosetting paint compositions which are resistant to yellowing due to brass, characterized in that the paint-film-forming components include (A) a compound which has per molecule at least 2 functional groups which can react with an isocyanate group, at 49.6-90 wt %, (B) a blocked isocyanate which has par molecule at least 2 isocyanate groups blocked by an azole blocking agent, at 9.6-50 wt %, (C) an ultraviolet absorber and/or free radical scavenger, at 0.2-5 wt %, (D) an organotin compound at 0.1-3 wt %, and (E) an amino resin at 0.1-30 wt %.Type: GrantFiled: July 21, 1998Date of Patent: February 15, 2000Assignee: BASF Coatings AGInventors: Kishio Shibatoh, Souichi Mori, Yasuhiro Monma
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Patent number: 6020419Abstract: The present invention relates to transparent coating compositions containing a binder and 0.5 to 25 wt. %, based on resin solids, of a material consisting of nanoscale primary particles obtained by jet dispersion of the nanoscale particles in the coating composition. The present invention also relates to a process for the production of these transparent coating compositions containing nanoscale particles by passing the coating compositions containing nanoscale primary particles and a binder in at least one pass through an apparatus which has at least one nozzle or at least one slit having a bore diameter or slit width of 0.05 to 1 mm and a length to diameter ratio of the bore or a depth to slit width ratio of the slit of 1 to 10, wherein there is a pressure differential between the nozzle inlet and outlet of at least 0.5, preferably of 1 MPa.Type: GrantFiled: March 16, 1999Date of Patent: February 1, 2000Assignee: Bayer AktiengesellschaftInventors: Manfred Bock, Theodor Engbert, Stefan Groth, Bernd Klinksiek, Philip Yeske, Gerhard Jonschker, Ulrike Dellwo
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Patent number: 6017997Abstract: A waterborne dispersion of a polyurethane polymer is disclosed, which is useful as a film having improved mechanical properties. More particularly, the film has properties comparable to rubber; including, a percentage elongation greater than 700%; a tensile strength greater than 3500 psi; a 100% modulus below 450 psi; a 300% modulus below 700 psi; and, a 500% modulus below 1500 psi. The film can be prepared in the absence of a solvent, thus making it attractive for a variety of protection products for medical and industrial applications such as gloves, condoms, catheters, and the like. The polymer is useful as a coating for textiles, such as backcoatings, fabric or fiber saturants, finishes, or transfer coatings, or other textile and non-textile applications where good elastomeric properties would be useful.Type: GrantFiled: October 31, 1997Date of Patent: January 25, 2000Assignee: The B. F. Goodrich CompanyInventors: George E. Snow, Tina R. Dame
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Patent number: 6017998Abstract: The present invention discloses a stable aqueous polyurethane dispersions comprising a reaction product of a water dispersible isocyanate-terminated polyurethane prepolymer (A), an aqueous polyurethane dispersion (B) and water, and a method wherein a water dispersible isocyanate-terminated polyurethane prepolymer (A) is dispersed in at least one aqueous polyurethane dispersion (B) and water, and reacted at about 35.degree. C. to about 95.degree. C. until substantially free of isocyanate. The inventive dispersions are useful in adhesives, coatings, binders, primers and sizers.Type: GrantFiled: June 17, 1998Date of Patent: January 25, 2000Assignee: H.B. Fuller Licensing & Financing,Inc.Inventors: Youlu Duan, Yi Wei, Yuduo Zhu, Sonja E. Stammler, Brian L. Marty, Gary J. Haider, Ronald R. Davies, Michael J. Maksymkiw
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Patent number: 6011106Abstract: A method for providing a high-build, low-sag coating by applying an aqueous coating composition including a waterborne polymer, preferably an emulsion polymer, having a glass transition temperature from 0 C. to 70 C., a hydrophobically modified polyurethane thickener, and a coalescent having solubility in water of less than 3 weight % and evaporation rate of at least 0.01(butyl acetate evaporation rate=1.0) to a substrate in a single coat having a thickness of at least 0.05 mm. when dried, and drying, or allowing to dry, the applied coating is provided. The aqueous composition and a curable composition are also provided.Type: GrantFiled: September 25, 1998Date of Patent: January 4, 2000Assignee: Rohm and Haas CompanyInventor: Aurelia de la Cuesta Sheppard
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Patent number: 6008289Abstract: The present invention relates to pigmented coating slip suitable for the production of coated papers and boards containing(a) a coating pigment,(b) 5 to 20%, based on the coating pigment, of at least one synthetic binder,(c) optionally, 0.01 to 20%, based on the coating pigment, of a naturally occurring binder,(d) optionally, 0.01 to 5%, based on the coating pigment, of a cobinder,(e) 0.01 to 5%, based on the coating pigment, of an optical brightener,(f) 0.01 to 5%, based on the coating pigment, of at least one water-dispersible polyisocyanate, and(g) optional additives.Type: GrantFiled: January 16, 1998Date of Patent: December 28, 1999Assignee: Bayer AktiengesellschaftInventors: Joachim Konig, Eckhard Wenderoth, Jurgen Kopp, Gottfried Wallpott
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Patent number: 6005045Abstract: A homogeneous oil-in-water emulsion suitable for use as a curable film-forming composition is provided. The emulsion is a mixture of hydrophobic polyisocyanate crosslinking agent containing at least one tertiary isocyanate group and a surface active isocyanate reactive material. The surface active isocyanate reactive material comprises an active hydrogen-containing acrylic copolymer containing aromatic groups and having a glass transition temperature of at least about 0.degree. C. A multi-component composite coating composition is also provided by the present invention. The compositions are curable at ambient temperatures and are suitable for use in automotive applications.Type: GrantFiled: February 24, 1998Date of Patent: December 21, 1999Assignee: PPG Industries Ohio, Inc.Inventor: Joseph A. Klanica
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Patent number: 6001924Abstract: An aqueous binder vehicle dispersion and coating media, which can be used for multi-layer coating, wherein the dispersion is obtainable by the reaction ofI. 20 to 97% by weight of a polyurethane(-urea) resin containing groups which are reactive towards a chain extender IV), having a number average molecular weight (Mn) of 1000 to 10,000, and 8 to 80 milliequivalents per 100 g of ionic groups, groups which can be converted into ionic groups and/or hydrophilic groups,II. 0 to 30% by weight of a polyester resin having a number average molecular weight (Mn) of 500 to 5000, and having the same groups as in I) which are reactive towards IV), andIII.Type: GrantFiled: July 20, 1998Date of Patent: December 14, 1999Assignee: Herberts GmbHInventors: Jurgen Dobert, Bettina Vogt-Birnbrich, Armin Gobel, Marcus Brunner
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Patent number: 5998527Abstract: This is a description of a filler primer containing no organic solvents, for repair car-refinishing, characterised in that the binder is composed of a polyurethane water-soluble resin. This primer features improved vertical application characteristics and a faster drying speed.Type: GrantFiled: June 14, 1996Date of Patent: December 7, 1999Assignee: MaxMeyer Car s.r.l.Inventor: Andrea Giunta
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Patent number: 5998539Abstract: A water-dispersible blocked isocyanate composition, including an isocyanate group-terminated precursor and a blocking agent for blocking a free isocyanate group of the precursor, wherein the precursor includes at least an organic diisocyanate, a low-molecular glycol, and a hydrophilic surfactant having at least one active hydrogen group. The precursor also has an isocyanurate ring structure; an average functional group number (f) satisfying 2.0.ltoreq.f.ltoreq.4.2; a low-molecular glycol content (X) satisfying 0.5 wt. %.ltoreq.X .ltoreq.15 wt. %; and a hydrophilic surfactant content(Y) satisfying 0.1 wt. % .ltoreq.Y.ltoreq.50 wt. %.Type: GrantFiled: October 7, 1997Date of Patent: December 7, 1999Assignee: Nippon Polyurethane Industry Co., Ltd.Inventors: Takeshi Morishima, Shogo Itoh, Shin Konishi
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Patent number: 5998540Abstract: Disclosed are aqueous polyurethane dispersions prepared from polyester polyols having 0.95 to 1.5 equivalents of carboxylic functionality thereon per equivalent of polyol, the dispersions also containing a nonionic surfactant component wherein the ratio by weight of said carboxylic functionality to said nonionic surfactant component is 1:2.5 to 1:0.5. The dispersions are particularly adapted to the formation of thin wall articles exhibiting greatly improved properties.Type: GrantFiled: October 22, 1998Date of Patent: December 7, 1999Assignee: Witco CorporationInventors: Anatoly Lipkin, Ibrahim Bechara
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Patent number: 5994452Abstract: The present invention relates to primer for promoting adhesion of an electroconductive metal oxide coating over a plastic substrate, to a method of making such a primer, and to a method of adhering an electroconductive metal oxide coating to a plastic substrate. The primer is a carbonate diol-based crosslinked polyurethane, and is more particularly the reaction product of a carbonate diol, a low molecular weight polyol and methylene diisocyanate.Type: GrantFiled: November 5, 1996Date of Patent: November 30, 1999Assignee: PPG Industries Ohio, Inc.Inventors: Thomas G. Rukavina, Robert M. Hunia
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Patent number: 5990234Abstract: The invention provides a liquid composition for coating surfaces, comprising: polymer droplets dispersed in a liquid component, ultraviolet light (UV) absorber, and defoamer. The liquid component comprises water, and volatile organic solvent. The organic solvent comprises a first and a second ether. The first and the second ether are miscible with water. The UV absorber and the defoamer are dispersed in the liquid component. A preferred embodiment of the invention provides the liquid composition with a particulate composition to provide a material for superior non-skid surface coatings, such as non-skid flooring surface coatings. Thus, the invention provides a material for making non-skid coatings, comprising: a particulate composition including wollastonite particles, cellulose particles, and diatomaceous earth particles.Type: GrantFiled: July 30, 1998Date of Patent: November 23, 1999Assignee: BTG, a PartnershipInventors: Robert Stahovic, Anthony J. Pecora
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Patent number: 5985986Abstract: The present invention relates to a process for the preparation of a coating bya) applying to a water-resistant substrate an aqueous coating composition containing water and a binder which consists essentially of at least one hydrophilically-modified organic polyisocyanate or polyisocyanate mixture which has an NCO content of 5 to 30, preferably 10 to 23% by weight, and is dispersible in water andb) curing the composition in the presence of moisture to form a polyurea coating.Type: GrantFiled: October 5, 1994Date of Patent: November 16, 1999Assignee: Bayer AktiengesellschaftInventors: Werner Kubitza, Rolf Roschu, Ferdinand Zollner, Hans Josef Laas
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Patent number: 5985985Abstract: Polyurethanes I obtained by reacting1) an isocyanate II as defined in the specification with2) a compound V which is suitable as chain extender, obtained bya) reacting a polyhydric alcohol VI withb1) a compound VII, which includes an epoxy function and, in addition, an alcohol-reactive functional group, to form a compound VIII, and reacting a compound VIII with an .alpha.,.beta.-olefinically unsaturated carboxylic acid IX to give a compound X orb2) an .alpha.,.beta.-olefinically unsaturated carboxylic acid IX, to give a compound X andc) reacting a compound X with an amine XI having at least one primary amino which is reactive toward the .alpha.,.beta. multiple bond of IX,the sum of the number of isocyanato-reactive aminos and hydroxyls of the compound V being greater than the number of isocyanate groups of the compound II. The polyurethanes are useful as binders or binder components for pigment0free or pigment-containing coatings.Type: GrantFiled: June 26, 1997Date of Patent: November 16, 1999Assignee: BASF AktiengesellschaftInventors: Franz Weingart, Uwe Burkhardt, Stephan Bauer, Wolfgang Reich, Albert Kohl
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Patent number: 5981650Abstract: Cold-seal adhesives are disclosed that contain no natural rubber and are capable of forming dry coatings on flexible films which adhere to one another with commercially acceptable packaging strength at room temperature by pressure contact, but also allow such layered substrata to be reeled into rolls and stored for extended periods of time without blocking. The flexible films are usable in forming packages, particularly for comestibles and pharmaceuticals, without need for heat sealing. Such cold-seal adhesives are aqueous dispersions containing 30 to 55 percent of a polyurethane ionomer reaction product, having a T.sub.g of between about -50 to 10.degree. C., of a mixture of (a) a blend of between 0 and 40 percent polyester polyol and between 60 and 100 percent polyether polyol, (b) aliphatic diisocyanate and (c) dimethylol propionic acid and preferably containing 0.05 to 4 percent of grafted amorphous silica.Type: GrantFiled: August 26, 1997Date of Patent: November 9, 1999Assignee: Ashland Inc.Inventors: Chen Zhao, Xiaoqing Li
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Patent number: 5981653Abstract: The present invention relates to a process for the production of aqueous dispersions which form powder coatings at room temperature, have an average particle size of 0.1 to 10 .mu.m, contain polyols and blocked polyisocyanate crosslinking agents, and, after stoving, yield coatings with improved water and solvent resistance, in particular on metallic substrates.Type: GrantFiled: April 22, 1997Date of Patent: November 9, 1999Assignee: Bayer AktiengesellschaftInventors: Oswald Wilmes, Lothar Kahl, Bernd Klinksiek, Christian Wamprecht, Manfred Bock, Klaus Nachtkamp
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Patent number: 5977247Abstract: An aqueous coating composition useful as electro-deposition coatings includes (A') an aqueous dispersion of a resin (A) having functional groups which are reactive toward isocyanate, and (B') an aqueous, solvent-free dispersion of a solubilized masked polyisocyanate (B). The coating is cured by baking at a temperature which regenerates the isocyanate groups.Type: GrantFiled: October 3, 1997Date of Patent: November 2, 1999Assignee: Vianova Resins GmbH & Co. KGInventors: Markus A. Schafheutle, Achim Voelker, Susanne Wehner, Gerd Walz
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Patent number: 5972158Abstract: A process of bonding a plastic is provided. The process comprises applying to a plastic surface an aqueous dispersion of a hydroxyl-functional polyurethane prepolymer obtained by:(1) reaction of:a polyol component containing a polyester polyol,a compound selected from the group of compounds containing groups capable of salt formation and at least two isocyanate-reactive groups,an isocyanate component in a stoichiometric excess, at least 20% by weight of said component consisting of tetramethyl xylylene diisocyanate, and(2) subsequent dispersion in water and at least partial reaction of the remaining NCO groups with an aminoalcohol and, optionally, subsequent chain extension. The process further comprises drying said applied aqueous dispersion to form a primer and bonding said plastic surface having said primer to a part to be joined thereto. The process is particularly useful for priming plastics such as polyvinyl chloride.Type: GrantFiled: October 15, 1996Date of Patent: October 26, 1999Assignee: Kenkel Kommanditgeselschaft auf AktienInventors: Horst Hoffmann, Hans-Georg Kinzelmann, Hans-Peter Kohlstadt
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Patent number: 5973063Abstract: The present invention relates to improved thickening compositions, often referred to as Theological additives, used to provide viscosity control, flow, leveling and other rheological properties to clear aqueous systems such as automotive clear-coat paints and coatings. The invention hereof involves the synthesis of a new family of Theological additives by combining, through a reaction process, chemicals used to make specified polyurethane polymer compositions. These novel copolymers provides the good flow and leveling and gloss retention that polyurethane associative thickeners impart to water-based systems, without the loss of clarity that such polymers have caused in the past. Levels of the rheological thickening composition, varying between about 0.01% and about 10%, based on the total weight of the system to be thickened, have been found to be useful to create novel clear aqueous systems containing such thickening compositions.Type: GrantFiled: September 24, 1997Date of Patent: October 26, 1999Assignee: Rheox, Inc.Inventors: Joseph Doolan, Charles Cody, Wilbur Mardis, Anthony Ricci, Fred Whitton
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Patent number: 5973073Abstract: Two-component polyurethane coating formulations comprising an aqueous dispersion of a polyisocyanate and a neutralized, water-dispersible resin are disclosed. The neutralized, water-dispersible resin incorporates recurring units of an allylic alcohol or an alkoxylated allylic alcohol. These low-VOC formulations use commercial polyisocyanates and ordinary mixing techniques. The uniquely uniform distribution of hydroxyl groups in the resin contributes to an excellent overall balance of coating properties from the 2K system, including high gloss, hardness, impact resistance, flexibility, weatherability, and chemical resistance.Type: GrantFiled: April 6, 1998Date of Patent: October 26, 1999Assignee: ARCO Chemical Technology, L.P.Inventors: Shao-Hua Guo, Donald L. Lickei, Michael J. Morgan, James M. O'Connor
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Patent number: 5969019Abstract: The present invention provides an inexpensive, non-chromium anticorrosive coating composition and anticorrosion treatment method, which are superior in anticorrosion to conventional chromium-containing anticorrosive compositions.The anticorrosive coating composition of the invention comprises 0.2 to 50 g of thiocarbonyl group-containing compound, 0.1 to 5 g of phosphate ions, and aqueous resins in water. The amount of the thiocarbonyl group-containing compound and phosphate ions is based on one liter of the total amount of the aqueous resin and water. The above anticorrosive coating composition can further comprise 10 to 500 g of water-dispersible silica. The anticorrosion treatment method of the invention comprises coating zinc-type coated steel or non-coated steel with the anticorrosive coating composition.Type: GrantFiled: May 14, 1998Date of Patent: October 19, 1999Assignees: Nippon Paint Co., Ltd., Nippon Steel CorporationInventors: Hiroshi Kanai, Toshiaki Shimakura
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Patent number: 5965195Abstract: The present invention relates to coating composition, which is suitable for preparing light fast coatings and contains a cosolvent-free, aqueous, anionic dispersion of polyurethane-ureas, the solids content of which contains the reaction product, present at least partially in salt form, ofa) an NCO prepolymer prepared fromi) an aliphatic and/or cycloaliphatic diisocyanate,ii) a macrodiol having a number average molecular weight of 500 to 10,000iii) a 2,2-bis-(hydroxymethyl)alkane monocarboxylic acid andiv) a diol having a molecular weight of 62 to 400, withb) optionally a diamine,c) a monofunctional chain terminating agent,d) water ande) a neutralizing agent,provided that the NCO content of the prepolymer is up to 25% lower than the theoretical value, the entire polyurethane-urea synthesis reaction is performed in the homogeneous phase and no cosolvent having a boiling range of greater than 100.degree. C. is used during the preparation of the dispersion of polyurethane-ureas.Type: GrantFiled: December 11, 1997Date of Patent: October 12, 1999Assignee: Bayer AktiengesellschaftInventors: Hanns-Peter Muller, Horst Gruttmann, Holger Casselmann, Heino Muller, Joachim Petzoldt, Manfred Bock
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Patent number: 5961906Abstract: The use of dispersions of polyurethanes containing urea groups and based on selected starting materials, optionally via the intermediate stage of granules obtained by spray drying the dispersions, for the production of fully biodegradable shaped bodies.Type: GrantFiled: November 4, 1997Date of Patent: October 5, 1999Assignee: Bayer AktiengesellschaftInventors: Hanns-Peter Muller, Jochen Kalbe, Rainhard Koch
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Patent number: 5959003Abstract: The present invention provides particulate aqueous polyurethane dispersions and a process for producing the same. Two diverse polyols are reacted with two different amount of hydrophilic group-containing dihydric alcohols to obtain a hydrophobic prepolymer and a hydrophilic prepolymer respectively, and the two prepolymers obtained are together dispersed in water. After chain-extending the dispersed prepolymers, core-shell aqueous polyurethane dispersions are produced, wherein the shell is made from the hydrophilic prepolymer and the core is made from the hydrophobic prepolymer. The polyurethane product made from the aqueous polyurethane dispersions of the invention has superior solvent resistance and can be employed in industrial coating or surface treatment of leather or textiles.Type: GrantFiled: August 19, 1997Date of Patent: September 28, 1999Assignee: Industrial Technology Research InstituteInventors: Huey-Huey Lo, Yi-Hung Jan, Huey-Zong Wen, Wen-Jiunn Chen, Nien-Shi Chang
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Patent number: 5959027Abstract: A polyurethane/urea/thiourea latex having a narrow molecular weight polydispersity and sub-micron particle size can be prepared by first preparing a high internal phase ratio (HIPR) emulsion of a polyurethane/urea/thiourea prepolymer, then contacting the emulsion with a chain-extending reagent under such conditions to form the polymer latex.Type: GrantFiled: March 17, 1998Date of Patent: September 28, 1999Assignee: The Dow Chemical CompanyInventors: James J. Jakubowski, Wayne R. Willkomm, James E. Pate, III
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Patent number: 5952413Abstract: A process for the production of a fabric/elastomer composite is provided. The inventive process involves the impregnation of an inventive elastomer composition comprising (i) a water-borne polyurethane latex, (ii) an acid-generating chemical, and (iii) a cloud point surfactant, within a textile fabric. Subsequently, the impregnated fabric is then heated, preferably with steam, in order to generate an acid and gel the surfactant which then uniformly coagulates the latex over the fabric surface. The fabric is preferably comprised of polyester fibers. The composite may be utilized as upholstery in furniture or in automobiles, apparel, drapery, and the like. The inventive elastomer composition is also provided.Type: GrantFiled: February 8, 1999Date of Patent: September 14, 1999Assignee: Milliken & CompanyInventor: Kirkland W. Vogt
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Patent number: 5948229Abstract: An improved electrodepositable composition is provided comprising: (a) an active hydrogen-containing cationic resin electrodepositable on a cathode; (b) a capped polyisocyanate curing agent; and (c) an organotin-containing catalyst. The improvement comprises the addition to the electrodepositable composition of a water immiscible acid functional compound having a hydrocarbon chain of at least 5 carbon atoms. The composition provides improved cure response and appearance properties when electrodeposited over conductive substrates.Type: GrantFiled: March 19, 1997Date of Patent: September 7, 1999Assignee: PPG Industries Ohio, Inc.Inventors: Robert R. Zwack, V. Eswarakrishnan, Edward R. Coleridge, Gregory J. McCollum
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Patent number: 5948857Abstract: The present invention is a water-dispersible polyurethane composed of a polyurethane containing carboxylate groups covalently bonded to gelatin through a grafting agent. The polyurethane is formed by providing a polyurethane dispersion containing carboxylate groups wherein the polyurethane dispersion has an acid number of at least 5. The polyurethane dispersion is contacted with a grafting agent. The polyurethane dispersion with the grafting agent is contacted with gelatin to form a polyurethane covalently bonded to gelatin wherein a ratio of gelatin to polyurethane is from 1:10 to 2:1.Type: GrantFiled: June 4, 1998Date of Patent: September 7, 1999Assignee: Eastman Kodak CompanyInventors: Charles C. Anderson, Brian A. Schell, Gary R. Opitz