Patents Examined by Judy M. Reddick
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Patent number: 6872773Abstract: A readily water-redispersible and water-wettable polymer powder is prepared by spray-drying of an aqueous dispersion of polymer particles with admixing of a hydrophilic and of a hydrophobic antiblocking agent.Type: GrantFiled: April 2, 2004Date of Patent: March 29, 2005Assignee: BASF AktiengesellschaftInventors: Joachim Pakusch, Ines Pietsch, Hans-Jürgen Denu, Heinrich Sack, Bernd Reck
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Patent number: 6869996Abstract: A waterborne coating having improved chemical resistance produced from a composition containing a binder resin having post crosslinking groups, an associative thickener having post crosslinking groups and an associative dispersant having post crosslinking groups.Type: GrantFiled: November 9, 1999Date of Patent: March 22, 2005Assignee: The Sherwin-Williams CompanyInventors: John M. Krajnik, Keith R. Olesen, Gerald A. Vandezande
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Patent number: 6869994Abstract: A carboxyl group-containing polymer composition comprising 100 parts by weight of a carboxyl group-containing polymer (A) prepared by copolymerizing an ?,?-unsaturated carboxylic acid (a) with a compound (b) having at least two ethylenic unsaturated groups; and 0.01 to 20 parts by weight of at least one compound (B) selected from an ester (c) obtained from a polyhydric alcohol and a fatty acid, and an alkylene oxide adduct of an ester (d) obtained from a polyhydric alcohol and a fatty acid. Since the carboxyl group-containing polymer composition is excellent in the solubility in water and gives the aqueous solution excellent thickening property, the polymer composition can be suitably used as a thickener for various aqueous solutions.Type: GrantFiled: June 8, 2000Date of Patent: March 22, 2005Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Masato Fujikake, Shigeki Hamamoto, Tomoki Kawakita, Masatoyo Yoshinaka
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Patent number: 6866936Abstract: A water-based coating composition suitable for preparing hydrophilic surfaces on various articles is provided which includes a supporting polymer having functional moieties capable of undergoing crosslinking reactions, said supporting polymer soluble in or emulsified in an aqueous based medium; and a hydrophilic polymer, said hydrophilic polymer associated with the supporting polymer. The composition is characterized in that, when crosslinked at the functional moieties, the supporting polymer forms a three-dimensional network which substantially minimizes disassociation of the hydrophilic polymer.Type: GrantFiled: May 15, 2001Date of Patent: March 15, 2005Assignee: Surface Solutions Laboratories, Inc.Inventor: Margaret P. Opolski
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Patent number: 6863682Abstract: The present invention relates to the use of an exothermic composition having, as essential components, a water absorptive polymer and/or tackifier, carbon component and/or metal chloride and features that the product is as a whole ink-like or cream-like in a method of manufacturing an exothermic device.Type: GrantFiled: June 7, 2002Date of Patent: March 8, 2005Assignee: Kabushiki Kaisha Genchi KenkyushoInventor: Akio Usui
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Patent number: 6846867Abstract: An aqueous coating composition having improved adhesion to friable surfaces including an emulsion polymer of certain compositions and certain acid numbers having a glass transition temperature of ?20° C. to 100° C. and an average particle diameter less than 120 nanometers, and certain water-soluble ethoxylates is provided. In addition, a method for improving adhesion to friable surfaces by using the aqueous coating compositions of the invention is provided.Type: GrantFiled: October 29, 2001Date of Patent: January 25, 2005Assignee: Rohm and Haas CompanyInventors: Matthew Steward Gebhard, Kathleen Anne Koziski
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Patent number: 6841605Abstract: Disclosed are an adhesive composition for a metal foil which comprises a material wherein a tracking resistance test is carried out according to the IEC method by making a thickness of an adhesive layer 30 to 40 ?m, using a copper foil pattern with a width of 4 mm and making a distance between electrodes 0.4 mm, then the adhesive layer dissolves out for the first time when 5 drops or more of an electrolyte are dropped thereon, an adhesive-coated metal foil, a metal-clad laminate, a wiring board, a multi-layer board and a multi-layer wiring board using the same.Type: GrantFiled: September 24, 1999Date of Patent: January 11, 2005Assignee: Hitachi Chemical Co., Ltd.Inventors: Toshihisa Kumakura, Takeshi Horiuchi, Kazuyuki Magome, Norifumi Shiraishi
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Patent number: 6838517Abstract: The present invention provides methods for producing an ethylene-vinyl acetate copolymer and a saponified product thereof that can inhibit visible imperfections (particularly discoloration) at the time of molding by improving the process for recovering vinyl acetate. When the alcohol-based solvent to be blown in when recovering vinyl acetate is deoxidized so that its oxygen concentration becomes not more than 60 ppm, discoloration of a molded product of the above saponified product due to oxygen can be inhibited.Type: GrantFiled: June 28, 2001Date of Patent: January 4, 2005Assignee: Kuraray Co., Ltd.Inventors: Takaharu Kawahara, Tetsuya Hikasa
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Patent number: 6838498Abstract: A method of producing a printed substrate so as to improve the adhesion, colorfastness and washfastness of either reactive or acid dye-based ink jet inks printed onto the substrate, the method includes the steps of providing a substrate, treating the substrate with an aqueous coating formulation comprising a cationic polymer or copolymer, a fabric softener, treating the substrate of step with an imbibing aqueous solution of either urea, and an ingredient selected from sodium bicarbonate, sodium carbonate or combinations thereof, or ammonium sulfate, drying the substrate, printing on the substrate with either an acid or reactive dye-based ink, depending on the coating and post treating the printed substrate.Type: GrantFiled: October 30, 2000Date of Patent: January 4, 2005Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Alison Salyer Bagwell, Kelly Dean Branham, Mary Elizabeth Farris, Leonard Eugene Zelazoski
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Patent number: 6835770Abstract: A process for a polyolefin-based resin composition, which comprises melt-kneading 100 parts by weight of a polyolefin-based resin and not less than 0.05 parts by weight and less than 2 parts by weight of polymer fine particles containing 0.10 to 90% by weight of a volatile component as an anti-blocking agent.Type: GrantFiled: October 13, 2000Date of Patent: December 28, 2004Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroyuki Tanimura, Takeshi Ebara
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Patent number: 6830726Abstract: This invention relates to a radiation-resistant acrylic adhesive composition with less reduction in the adhesion thereof upon irradiation with radiations, which composition comprises an acrylic polymer and a radiation-resistant agent, and a radiation-resistant adhesive product comprising the composition.Type: GrantFiled: September 27, 2001Date of Patent: December 14, 2004Assignee: Lintec CorporationInventors: Rui Saito, Eiji Suzuki, Hideaki Okabe
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Patent number: 6828382Abstract: This invention relates to a jointing compound of an acrylate/acrylonitrile copolymer containing 2 to 8 carbon atoms in the alcohol component as binder and fatty compounds as plasticizer and also fillers and auxiliaries. Epoxystearic acid methyl ester in particular may be used as the fatty compound while a butyl acrylate/acrylonitrile copolymer in particular may be used as the acrylate/acrylonitrile copolymer. The combination of the two substances results in jointing compounds characterized by a dramatic improvement in elasticity (resilience). Accordingly, they are particularly suitable for substrates with different coefficients of thermal expansion.Type: GrantFiled: July 12, 2000Date of Patent: December 7, 2004Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Helmut Loth, Klaus Helpenstein, Wolfgang Klauck, Johann Klein, Lydia Duhm
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Patent number: 6828505Abstract: The present invention is an improved electric insulation composition of a polymer and an additive that reduces water treeing due to electrical aging in water. The polymer additive is a hydrophobic/hydrophilic material with good compatibility with the polymer. The present invention is also a method of preventing electrical breakdown due to the formation of water trees by forming electrical cables with the insulation containing the disclosed anti-treeing additives.Type: GrantFiled: January 8, 1999Date of Patent: December 7, 2004Assignee: Pirelli Cavi S.p.A.Inventors: Franco Peruzzotti, Luca Castellani, Luis José Dacal, Valeria Garcia
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Patent number: 6825256Abstract: A carbon monoxide modified ethylene-vinyl acetate copolymer composition is disclosed, having diminished tendency to cause discoloration on heating at 177° C. of a plastic composition whose major polymeric component is polyvinyl chloride, comprising carbon monoxide modified ethylene-vinyl acetate copolymer and an amount, effective in diminishing discoloration, of at least one inorganic perchlorate salt selected from the group consisting of alkali metal perchlorates and alkaline earth metal perchlorates.Type: GrantFiled: January 14, 2002Date of Patent: November 30, 2004Assignee: Crompton CorporationInventors: Kook Jin Bae, Stuart D. Brilliant, Johannes Kaufhold
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Patent number: 6822022Abstract: Disclosed is a method of producing a powdery coating material by using: a curable polyester resin (A) having a hydroxyl group and/or a carboxyl group at the terminals thereof, and further having a number average molecular weight of from 1,000 to 30,000, a glass transition temperature of from 30 to 100° C.; a curing agent (B) which is solid at normal temperature and is capable of being reacted with the hydroxyl group or the carboxyl group of the curable polyester resin (A); and a solvent (C) having a boiling point under normal pressure of from 50 to 130° C.; and comprising a step of kneading the curable polyester resin (A), the curing agent (B) and the solvent (C) under condition in which at 50 to 130° C., not less than 20% by weight of the curing agent (B) is dissolved in the solvent and, then, vapor-removing the solvent (C) under a reduced pressure.Type: GrantFiled: March 13, 2002Date of Patent: November 23, 2004Assignee: Mitsubishi Gas Chemical INCInventors: Nobuyuki Koike, Shojiro Kuwahara
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Patent number: 6818247Abstract: A composition comprising an ethylene vinyl alcohol copolymer and a dimethyl acetamide solvent is provided for forming a coating on prostheses such as stents. The composition can include an active agent or therapeutic substance. Methods are also provided for coating the stents.Type: GrantFiled: April 27, 2001Date of Patent: November 16, 2004Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Yung-Ming Chen, Syed F. A. Hossainy, Deborra Sanders Millare, Wouter E. Roorda, Ashok A. Shah
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Patent number: 6815497Abstract: Disclosed are adhesive formulations as creping process aids for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means by means of adhesive compositions comprising polymers having at least one primary or secondary amine group in the backbone such as chitosan, plolyvinylamine, polyvinyl alcohol-vinyl amine and polyaminoamide in combination with crosslinking agents such as zirconium compounds having a valence of plus four including ammonium zirconium carbonate, zirconium acetylacetonate, zirconium acetate, zirconium carbonate, zirconium sulfate, zirconium phosphate, potassium zirconium carbonate, zirconium sodium phosphate and sodium zirconium tartrate and creping said treated web from said thermal drying means.Type: GrantFiled: February 2, 2000Date of Patent: November 9, 2004Assignee: Fort James CorporationInventors: Phuong Van Luu, Cristian M. Neculescu, Dawn M. Mews
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Patent number: 6815010Abstract: A method of inhibiting the loss of solar reflectivity over time of an exterior elastomeric coating composition comprising an organic binder and at least one inorganic additive comprises: replacing at least a part of the at least one inorganic additive with a solid, particulate, organic polymer having a Tg greater than 70° C. An improved exterior elastomeric coating composition is also disclosed.Type: GrantFiled: May 1, 2001Date of Patent: November 9, 2004Assignee: Rohm and Naas CompanyInventors: William Henry Elfring, Donald Alfred Winey
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Patent number: 6814909Abstract: An indicator comprising a porous resin material, and a liquid retained in the pores of the porous resin material, in which the whiteness of the porous resin material is at least 80, and the whiteness of the porous resin material is at least 20 larger than that of the indicator. This indicator displays information such as a period through the change of a color tone, and the like, well maintains the displaying properties, and suffers from less variation of displayed periods.Type: GrantFiled: April 3, 1998Date of Patent: November 9, 2004Assignee: Sumitomo Chemical Company, LimitedInventors: Tadashi Sakurai, Takanori Kume, Tatsuhiro Nagamatsu, Tsuyoshi Moriguchi, Miya Nakayama
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Patent number: 6812281Abstract: Disclosed are adhesive formulations as creping process aids for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means by means of adhesive compositions comprising polymers having at least one primary or secondary amine group in the backbone such as chitosan, polyvinylamine, polyvinyl alcohol-vinyl amine and polyaminoamide in combination with crosslinking agents such as dialdehydes or zirconium compounds having a valence of plus four including ammonium zirconium carbonate, zirconium acetylacetonate, zirconium acetate, zirconium carbonate, zirconium sulfate, zirconium phosphate, potassium zirconium carbonate, zirconium sodium phosphate and sodium zirconium tartrate and creping said treated web from said thermal drying means.Type: GrantFiled: July 13, 2001Date of Patent: November 2, 2004Assignee: Fort James CorporationInventors: Phuong Van Luu, Cristian M. Neculescu, Dawn M. Mews