Slurried, Dispersed, Or Suspended Ingredient Admixed With Previously Formed Latex, Aqueous Dispersion Or Aqueous Suspension Of A Solid Polymer Patents (Class 523/334)
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Patent number: 7666933Abstract: An organosilane masterbatch containing (a) 2-20 parts by weight of rubber, (b) 0-60 parts by weight of filler, (c) 5-55 parts by weight of organosilane and (d) 0-10 parts by weight of dispersing agent. A process for preparing the organosilane masterbatch by mixing the rubber, filler, organosilane and dispersing agent in a banbury or kneader, extruding and cutting into pieces. Rubber mixtures containing the organosilane masterbatch can be used in rubber mixtures.Type: GrantFiled: April 21, 2004Date of Patent: February 23, 2010Assignees: Degussa AG, Evermore Trading CorporationInventor: Lu-Liang Wu
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Publication number: 20100022684Abstract: The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide.Type: ApplicationFiled: July 23, 2009Publication date: January 28, 2010Inventors: Peter J. Wallen, Gregory C. Bowman, Howard A. Colvin, Christopher J. Hardiman, José Eduardo Rojas Reyna
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Patent number: 7619028Abstract: The present invention is to provide a diene rubber composition and a cross-linked diene rubber thereof excellent in tensile strength, wear resistance and processability, keeping compatibility of both good fuel efficiency and high gripping property, and a production method thereof. What is characterized in the composition is that the composition is comprised of 100 parts by weight of a diene rubber having a molecular weight distribution expressed in terms of the ratio of the weight-average molecular weight to the number-average molecular weight of 1.1 to 30, 20 to 200 parts by weight of silica and a cationic polymer, and that a toluene-insoluble rubber content per gram of the silica within the range from 0.2 to 1 g, and diene cross-linked rubber thereof.Type: GrantFiled: January 30, 2004Date of Patent: November 17, 2009Assignees: Tokuyama Corporation, Zeon CorporationInventors: Kazutake Watanabe, Osamu Yatabe, Takeshi Karato, Yoshihiro Chino, Takahiko Fukahori
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Patent number: 7589135Abstract: A puncture sealing agent includes at least a rubber latex solution, a short fiber and a clay base viscosity improver, the viscosity of the rubber latex solution after addition of the clay base viscosity improver being 3 to 6000 mPa·s in a range of +50 to ?20° C.Type: GrantFiled: December 6, 2004Date of Patent: September 15, 2009Assignee: Bridgestone CorporationInventors: Daisuke Sugio, Ryuji Izumoto, Kazuma Nakazawa
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Patent number: 7582689Abstract: Elastomer masterbatch is processed in a continuous compounder having multiple parallel elongate rotors axially oriented in an elongate processing chamber. Optionally, additional materials are compounded into the masterbatch, e.g., additives, other elastomeric compositions, etc. Preferably, the masterbatch then is further processed in an open mill. Excellent control of Mooney Viscosity is achieved. In certain preferred embodiments, elastomer composites are produced by novel continuous flow methods and apparatus in which fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum reactor to form a coagulated mixture in semi-confined flow continuously from the mixing zone through a coagulum zone to a discharge end of the reactor.Type: GrantFiled: August 12, 2005Date of Patent: September 1, 2009Assignee: Cabot CorporationInventors: Bin Chung, Susan W. Green, Ivan Z. Podobnik, Joseph Cianciolo
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Publication number: 20090088496Abstract: A rubber-filler composite exhibiting low heat build-up, fatigue resistance and heat aging resistance equal to those of a concentrated natural rubber latex, despite using a field latex of a natural rubber and omitting a concentration step is disclosed. The rubber-filler composite is obtained by jetting a field latex of a natural rubber in a form of a high-speed flow having a flow rate of 500 m/sec or more into a mixing chamber while supplying a filler slurry containing a filler to the mixing chamber, thereby separating and removing protein in the field latex from a rubber component and at the same time, mixing the field latex and the filler slurry.Type: ApplicationFiled: September 15, 2008Publication date: April 2, 2009Applicant: Toyo Tire & Rubber Co., Ltd.Inventors: Takashi Miyasaka, Takashi Yuri, Hiroaki Narita, Hirofumi Hayashi
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Publication number: 20090062428Abstract: An elastomer composite includes the coagulated product of a mixture of a particulate slurry and a latex blend comprising skim latex and at least one of field latex and latex concentrate.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Inventors: Xuan Zhang, Michael D. Morris
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Patent number: 7449516Abstract: Powder coating materials preparable by (1) mixing at least two liquid components comprising in each case at least one liquid starting product in a static mixer, to give a molecularly disperse and/or finely dispersed liquid mixture, (2) emulsifying the liquid mixture (1) in an aqueous medium in a dispersing unit, to give an aqueous emulsion of liquid particles, (3) cooling the emulsion (2) so that a suspension of dimensionally stable particles is formed, (4) isolating the dimensionally stable particles from the suspension (3) or alternatively (3) isolating the dimensionally stable particles directly from the emulsion (2); and also processes for preparing them and their use as coating materials, adhesives, and sealing compounds or to prepare such compositions.Type: GrantFiled: May 24, 2002Date of Patent: November 11, 2008Assignee: BASF Coatings AGInventors: Robert Bayer, Werner-Alfons Jung, Michael Mauss, Hans-Joachim Weintz, Jan Berg, Reinhard Polke, Heiko Wolf, Michael Stang
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Publication number: 20080220176Abstract: Disclosed are Pickering emulsions, related aqueous dispersions, and methods for their preparation, both of which include the use of a water insoluble promoter. Also disclosed are coatings and particle networks formed therefrom.Type: ApplicationFiled: February 27, 2007Publication date: September 11, 2008Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Leland H. Carlblom, Terri L. Ziegler, Mary Ann M. Fuhry
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Publication number: 20080214700Abstract: The present invention provides a natural rubber masterbatch effective in achieving a tread rubber composition which is suitable for heavy-duty tires for rough roads and which is effective in greatly enhancing the abrasion resistance of the tires without impairing the low heat build-up of the tires, a method of producing the natural rubber masterbatch, a rubber composition prepared using the natural rubber masterbatch, and a tire. In a mixing step of mixing a natural rubber latex with a slurry containing water and a carbon black dispersed therein, 10 to 100 weight parts of the carbon black is mixed with 100 weight parts of a natural rubber component in the natural rubber latex. The carbon black satisfies the following conditions: (1) N2SA is 120 to 180 m2/g; (2) the relationship between 24M4DBP and N2SA is represented by the inequality 15?24M4DBP?0.Type: ApplicationFiled: December 19, 2005Publication date: September 4, 2008Applicant: Bridgestone CorporationInventors: Hiroshi Yamada, Kazuhiro Yanagisawa
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Patent number: 7407611Abstract: A method is disclosed for producing elastomer compounds for use in the production of rubbers. At least one elastomer to be processed for the production of an elastomer mixture can be slowly added to a mixer/extruder and is mixed and plasticized and/or masticated (melted) while it passes through the mixer/extruder. The elastomer, when slowly added to the mixer/extruder, can be present in a fluid medium in an evenly distributed form.Type: GrantFiled: March 12, 2004Date of Patent: August 5, 2008Assignee: Buhler AGInventors: Federico Innerebner, Erhard Krumpholz, Christoph Näf, Achim-Philipp Sturm, Bernhard Stalder, Roland Halter
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Patent number: 7374699Abstract: A slurry rheology modifier comprises a first water-soluble low-molecular compound [referred to hereinafter as compound (A)] and a second water-soluble low-molecular compound [referred to hereinafter as compound (B)] being different from the compound (A), wherein the viscosity of an aqueous solution at 20° C. prepared by mixing an aqueous solution SA (with a viscosity at 20° C. of 100 mPa·s or less) of compound (A) with an aqueous solution SB (with a viscosity at 20° C. of 100 mPa·s or less) of compound (B) in the ratio of 50/50 by weight can be at least twice as high as the viscosity of either aqueous solution before mixed.Type: GrantFiled: June 14, 2002Date of Patent: May 20, 2008Assignee: Kao CorporationInventors: Hotaka Yamamuro, Koji Koyanagi, Daisuke Shiba
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Publication number: 20070287789Abstract: The present invention describes bleed-resistant microparticles comprising at least one colorant, a process to produce them, compositions containing them and their use in cosmetics applications to produce a natural, textured tone effect.Type: ApplicationFiled: June 7, 2006Publication date: December 13, 2007Inventors: Stephen Ray Jones, Bryan David Grey, Paul Michael Dymond, Mark Christopher Baxter, Christina Ligia Andrianov
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Patent number: 7101922Abstract: This invention relates to the preparation of a silica reinforced elastomer via preparation of a silica-elastomer masterbatch as a composite of synthetic silica and an emulsion polymerization prepared synthetic elastomer. Such masterbatch is prepared by introducing such silica and a silane into a latex of the synthetic elastomer and recovering the composite thereof The invention further includes a rubber composition of at least two elastomers wherein at least one of said elastomers is such masterbatched composite. A tire having a component of such rubber composition, particularly a tire tread, is specifically contemplated.Type: GrantFiled: December 2, 2002Date of Patent: September 5, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Sun-Lin Chen, Howard Allen Colvin
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Patent number: 7097954Abstract: A toner process comprising heating a mixture of a latex and a colorant dispersion in the presence of an aggregating agent, and subsequently adding in an amount of at least about 4 weight percent alumina particles, and optionally which particles primarily function as a charge enhancing additive.Type: GrantFiled: January 28, 2004Date of Patent: August 29, 2006Assignee: Xerox CorporationInventors: Michael S. Hawkins, Vladislav Skorokhod, Richard P. N. Veregin, Jackie B. Parker, Eric M. Strohm
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Patent number: 7067075Abstract: The object of the present invention is to provide a flame-retardant thermoplastic resin composition, which comprises: 100 parts by weight of a thermoplastic resin (A), 0.1 to 30 parts by weight of a polyorganosiloxane-containing graft copolymer (B) obtained by polymerizing, in at least one stage, a monomer (B-3) comprising a polyfunctional monomer (B-2) containing at least two polymerizable unsaturated bonds within the molecule thereof, and/or a vinyl monomer (B-4) in the presence of polyorganosiloxane particles (B-1), 0.0005 to 5 parts by weight of at least one metal salt (C) selected from the group consisting of alkali metal salts and bivalent or further polyvalent metal salts, and 0.05 to 2 parts by weight of a fluororesin (D).Type: GrantFiled: April 25, 2003Date of Patent: June 27, 2006Assignee: Kaneka CorporationInventors: Kazunori Saegusa, Tomomichi Hashimoto, Hiroshi Tsuneishi, Nobuo Miyatake, Hiroshi Tone, Akira Takaki
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Patent number: 7064161Abstract: The invention relates to the technical field of mortars, concretes, and other compositions based on cement, and in particular to agents capable of modifying their rheological characteristics, in particular workability. Workability may be defined as the property of a hydraulic binder to remain workable during as long a time as possible. The invention relates to novel agents of the acrylic copolymer type having urethane functions for improving the workability of hydraulic binders, to a method of preparing such novel agents, to binders containing them, and to uses for them. Such agents have the advantageous property of not retarding the setting time.Type: GrantFiled: August 8, 2003Date of Patent: June 20, 2006Assignee: Coatex S.A.Inventors: Yves Kensicher, Jean-Marc Suau
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Patent number: 7041425Abstract: A process including blending a latex emulsion of resin, water, and an ionic surfactant, a colorant dispersion comprised of a colorant, water, and an ionic surfactant; and a wax dispersion comprised of wax, water and an ionic surfactant, heating the resulting mixture in the presence of coagulants, one of which is a source of calcium ions, which heating is below about the glass transition temperature (Tg) of the latex resin and subsequently heating above about the glass transition temperature (Tg) of the latex resin.Type: GrantFiled: February 10, 2004Date of Patent: May 9, 2006Assignee: Xerox CorporationInventors: Michael A. Hopper, Joseph Bartel, Maria N. V. McDougall, Patricia A. Burns, Richard P. N. Veregin
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Patent number: 7008979Abstract: A coating composition is disclosed which comprises an aqueous polymeric matrix, a hydrophilic polymer, a colloidal metal oxide and a crosslinker. The coating composition when applied on medical devices is hydrophilic, shows improved lubricity, abrasion resistance and substrate adhesion on metallic or plastic substrates. The coating also shows improved water sheeting thus providing the coated substrates with anti-fog properties. The coating absorbs aqueous dye or stain solutions making the substrate suitable for printing.Type: GrantFiled: September 27, 2002Date of Patent: March 7, 2006Assignee: Hydromer, Inc.Inventors: Thomas C. Schottman, Patrick M. Hennessey, Rainer Gruening
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Patent number: 6936656Abstract: The invention relates to comb polymers and macromonomers based on acrylates prepared by the ATRP (Atom Transfer Radical Polymerization) method. These polymers have an improved capability of dispersing pigments in the given solvent. The invention also relates to compositions comprising the comb polymers and macromonomers dispersible inorganic or organic pigment particles. The compositions are used by applying them to any suitable substrate, for example to metal, wood plastic or ceramic materials.Type: GrantFiled: January 4, 2001Date of Patent: August 30, 2005Assignee: Ciba Specialty Chemicals CorporationInventors: Andreas Mühlebach, François Rime, Clemens Auschra, Ernst Eckstein
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Patent number: 6890644Abstract: A novel primer composition which does not need to be thermally cured at a high temperature after it is applied to a plastic substrate and a transparent laminate, for example, a plastic lens for spectacles, which comprises the above primer composition and has high impact resistance and high heat resistance even when a transparent anti-reflection coat is formed. This transparent laminate comprises a transparent plastic substrate and a coating film formed on at least one side of the plastic substrate by applying and curing a liquid primer composition which comprises (A) a self-emulsifiable emulsion of a linear polyurethane having a pendant carboxylic acid group and no crosslinked structure between polymer chains, (B) a sol of an inorganic oxide having a hydrophobic group on the surface, and (C) a compound having 5 to 9 carbon atoms and at least one hydroxyl group and at least one oxygen atom other than an oxygen atom constituting a hydroxyl group in the molecule.Type: GrantFiled: July 4, 2001Date of Patent: May 10, 2005Assignee: Nippon Arc Co., Ltd.Inventor: Hisayuki Kayanoki
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Patent number: 6858668Abstract: This invention relates to a process for the preparation of aqueous emulsions of blocked (poly)isocyanates, this process comprising the steps consisting successively in: a) placing an isocyanate composition containing free isocyanate functions in contact with at least one blocking agent A in the presence of a surfactant B and an aqueous phase, the said isocyanate composition being added gradually to a stock containing at least some of the aqueous phase and at least some of the blocking agent; and optionally, b) subjecting the mixture obtained to a shear (speed gradient) of greater than 1000 s?1, preferably greater than 20,000 s?1 and less than 1,000,000 s?1, preferably less than 200,000 s?1, and c) repeating step b), optionally after step a) has been repeated, until a stable emulsion is obtained whose particles have a Sauter diameter of greater than 0.1 ?m, preferably 0.2 ?m, and less than 5 ?m, preferably less than 2 ?m, and a dispersion width of less than 5 ?m.Type: GrantFiled: August 27, 1998Date of Patent: February 22, 2005Assignee: Rhodia ChimieInventors: Jean-Marie Bernard, Jean-Pierre Corbet, Minou Nabavi, Philippe Galy-Jammou, Denis Revelant
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Patent number: 6849371Abstract: A surfactant-free toner process including coalescing by heating in water a coagulant, a polyester resin emulsion, a wax emulsion stabilized with said polyester emulsion and a colorant dispersion stabilized by said polyester emulsion.Type: GrantFiled: June 18, 2002Date of Patent: February 1, 2005Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Enno E. Agur
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Publication number: 20040254267Abstract: It is an object to provide a coating agent and a paint, which enable sufficient exhibition of the capability of a photocatalyst such as the capability to decompose an organic substance or the like; particularly, sufficient exhibition of the capability on a thin coating film.Type: ApplicationFiled: July 23, 2004Publication date: December 16, 2004Inventor: Yoshiyuki Nagae
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Patent number: 6831126Abstract: The present invention relates to aqueous coating compositions containing A) at least one aqueous emulsion polymer, B) one or more polymer dispersions as a dispersion medium, C) at least one pigment, D) optionally a neutralizing agent and E) optionally a coatings additive. The present invention also relates to a process for preparing these aqueous coating compositions by preparing a dispersion paste by mixing components B), C) and D) with some of component E) and then component A) and the remainder of component E) are homogeneously blended with the dispersion paste. The present invention further relates to peelable coatings prepared from these coating compositions for the temporary protection of surfaces.Type: GrantFiled: November 7, 2002Date of Patent: December 14, 2004Assignee: Bayer AktiengesellschaftInventors: Rolf Gertzmann, Joachim Petzoldt, Heino Müller, Christoph Irle
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Patent number: 6825260Abstract: Interpenetrating organic and inorganic networks with a maximum dimension of 100 mn are produced by: (1) mixing aqueous solutions or dispersions of organic polymers capable of forming polymer networks in aqueous phase, polymer precursors or the mixtures thereof and silicon dioxide components; (2) changing the pH value and/or thermally treating the aqueous solution or dispersion in order to form a gel made of interpenetrating organic and silica gel networks and (3) drying the gel.Type: GrantFiled: December 5, 2000Date of Patent: November 30, 2004Assignee: Cabot CorporationInventors: Werner Sievers, Andreas Zimmermann
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Patent number: 6822036Abstract: Rubber powders with a high degree of filling are obtained by precipitating water-containing suspensions which contain fillers and rubber emulsions or rubber solutions. Use thereof to prepare vulcanizable rubber mixtures.Type: GrantFiled: May 23, 2000Date of Patent: November 23, 2004Assignee: PKU Pulverkautschuk Union GmbHInventors: Udo Görl, Thomas Trempler, Reinhard Stober, Uwe Ernst
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Patent number: 6815137Abstract: A process for producing polymer fine particles comprising: dispersing a solution obtained by dissolving a hydrophobic polymer in a solvent immiscible with water in an aqueous phase comprising fine particles of an oxide or hydroxide of at least one element selected from the group consisting of elements belonging to 2 to 15 groups in the periodic table using a surfactant; or dispersing a solution obtained by dissolving a hydrophobic polymer in a solvent immiscible with water in an aqueous phase comprising a water-soluble resin; and then removing the solvent from the oil droplets to form polymer fine particles dispersed in water.Type: GrantFiled: December 28, 2001Date of Patent: November 9, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Hoshi, Koichi Kawamura, Sumiaki Yamasaki
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Patent number: 6800673Abstract: An ink for ink jet recording which inclides a water-insoluble ionic group-containing polymer added to a colored fine particle dispersion containing at least a hydrophobic high-boiling organic solvent having a boiling point of 150° C. or more and an oil-soluble dye. In a preferred embodiment, the water-insoluble ionic group-containing polymer is converted by emulsification dispersion into a fine particle dispersion and added to the colored fine particle dispersion, and the oil-soluble dye is represented by specific formulae.Type: GrantFiled: August 7, 2001Date of Patent: October 5, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Junichi Yamanouchi, Takahiro Ishizuka, Yoshiharu Yabuki
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Publication number: 20040146797Abstract: A toner process involving mixing a colorant dispersion comprising an acicular magnetite dispersion and a colorant dispersion with a latex, a wax dispersion, a crosslinked resin, and a coagulant.Type: ApplicationFiled: January 29, 2003Publication date: July 29, 2004Applicant: Xerox CorporationInventors: Raj D. Patel, Michael A. Hopper, Edward G. Zwartz, Allan K. Chen
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Patent number: 6767684Abstract: A toner process involving mixing a colorant dispersion comprising an acicular magnetite dispersion and a colorant dispersion with a latex, a wax dispersion, a crosslinked resin, and a coagulant.Type: GrantFiled: January 29, 2003Date of Patent: July 27, 2004Assignee: Xerox CorporationInventors: Raj D. Patel, Michael A. Hopper, Edward G. Zwartz, Allan K. Chen
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Publication number: 20040077756Abstract: The plastics additives powder compositions of the present invention are provided as powder particles having impact modifier particles and processing aid particles which are coagulated and dried. When blended in thermoplastic resins, such as PVC, the subject plastics additives powders both increase the impact strength and improve process efficiency and melt strength. The impact and processing properties achieved by the present invention are more efficient than using separate impact modifier and processing aid powders. The method of preparing the powder compositions of the present invention also enable impact modifier particles having rubber weight fractions greater than 88% to be isolated as free-flowing powders.Type: ApplicationFiled: July 24, 2003Publication date: April 22, 2004Inventors: Jane Elizabeth Weier, Morris Christopher Wills, Robert William Coyle
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Patent number: 6689459Abstract: An improved aqueous cathodic electrocoating composition having a binder of an epoxy-amine adduct which is an epoxy resin that has been reacted with an amine, a blocked polyisocyanate crosslinking agent and an organic or inorganic acid as the neutralizing agent for the epoxy amine adduct; where the improvement is a catalyst of an alkyl tin oxide that has been dissolved with an organic or inorganic acid to provide a clear cathodic electrocoating composition.Type: GrantFiled: April 20, 2000Date of Patent: February 10, 2004Assignee: E.I. du Pont de Nemours and CompanyInventors: Ding-Yu Chung, Yuehua Liu
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Publication number: 20030232268Abstract: A surfactant-free toner process including coalescing by heating in water a coagulant, a polyester resin emulsion, a wax emulsion stabilized with said polyester emulsion and a colorant dispersion stabilized by said polyester emulsion.Type: ApplicationFiled: June 18, 2002Publication date: December 18, 2003Applicant: Xerox CorporationInventors: Guerino G. Sacripante, Enno E. Agur
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Patent number: 6642301Abstract: A pigment dispersion comprising pigment, an aqueous carrier selected from water and a mixture of water and at least one organic solvent, and a pigment dispersant is described. The pigment dispersant is prepared by controlled radical polymerization, e.g.Type: GrantFiled: August 13, 2002Date of Patent: November 4, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Daniela White, Simion Coca, James B. O'Dwyer
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Publication number: 20030203991Abstract: A coating composition is disclosed which comprises an aqueous polymeric matrix, a hydrophilic polymer, a colloidal metal oxide and a crosslinker. The coating composition when applied on medical devices is hydrophilic, shows improved lubricity, abrasion resistance and substrate adhesion on metallic or plastic substrates. The coating also shows improved water sheeting thus providing the coated substrates with anti-fog properties. The coating absorbs aqueous dye or stain solutions making the substrate suitable for printing.Type: ApplicationFiled: September 27, 2002Publication date: October 30, 2003Applicant: Hydromer, Inc.Inventors: Thomas C. Schottman, Patrick M. Hennessey, Rainer Gruening
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Publication number: 20030195276Abstract: Elastomer composite blends are produced by novel wet/dry mixing methods and apparatus. In the wet mixing step or stage, fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum reactor to form a mixture in semi-confined flow continuously from the mixing zone through a coagulum zone to a discharge end of the reactor. The particulate filler fluid is fed under high pressure to the mixing zone, such as to form a jet stream to entrain elastomer latex fluid sufficiently energetically to substantially completely coagulate the elastomer with the particulate filler prior to the discharge end. Highly efficient and effective elastomer coagulation is achieved without the need for a coagulation step involving exposure to acid or salt solution or the like. Novel elastomer composites are produced.Type: ApplicationFiled: November 8, 2001Publication date: October 16, 2003Inventors: Melinda Ann Mabry, Ting Wang, Ivan Zlatko Podobnik, James A. Shell, Allan Clark Morgan, Bin Chung, Noboru Tokita
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Patent number: 6602935Abstract: This invention relates to an aqueous suspension including a mixture of at least one aqueous suspension of precipitated silica and of at least one latex, in which the aqueous suspension of precipitated silica has a solids content of between 10 and 40% by weight, has a viscosity lower than 4×10−2 Pa s at a shear of 50 s−2 and, after centrifuging at 7500 revolutions per minute for 30 minutes, produces a supernatant containing more than 50% of the weight of the silica initially in suspension. This suspension can be employed in compositions based on an inorganic binder and in concrete compositions.Type: GrantFiled: November 27, 2001Date of Patent: August 5, 2003Assignee: Rhodia ChimieInventors: Evelyne Prat, Laurent Frouin
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Publication number: 20030119946Abstract: This invention relates to the preparation of a silica reinforced elastomer via preparation of a silica-elastomer masterbatch as a composite of synthetic silica and an emulsion polymerization prepared synthetic elastomer. Such masterbatch is prepared by introducing such silica and a silane into a latex of the synthetic elastomer and recovering the composite thereof The invention further includes a rubber composition of at least two elastomers wherein at least one of said elastomers is such masterbatched composite. A tire having a component of such rubber composition, particularly a tire tread, is specifically contemplated.Type: ApplicationFiled: December 2, 2002Publication date: June 26, 2003Inventors: Sun-Lin Chen, Howard Allen Colvin
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Patent number: 6566432Abstract: Disclosed is a coloring resin composition comprising a dispersing agent, a pigment and a thermoplastic resin, in which the dispersing agent is expressed by the following Formula 1 and the thermoplastic resin is metallocene polyolefin: CnH2n+1(OCH2CH2)mOH Formula 1 wherein n is an integer of 26 to 50, and m is an integer of 4 to 100. The composition is useful in coloring molded articles of thermoplastic resin. Colored resin molded articles using the composition are also disclosed.Type: GrantFiled: June 15, 2001Date of Patent: May 20, 2003Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Masayasu Kawamura, Masashi Koide
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Patent number: 6503976Abstract: A coating composition for fabrics includes wetted microspheres containing a phase change material dispersed throughout a polymer binder, a surfactant, a dispersant, an antifoam agent and a thickener. Preferred phase change materials include paraffinic hydrocarbons. The microspheres may be microencapsulated. To prepare the coating composition, microspheres containing phase change material are wetted and dispersed in a dispersion in a water solution containing a surfactant, a dispersant, an antifoam agent and a polymer mixture. The coating is then applied to a fabric.Type: GrantFiled: December 11, 2000Date of Patent: January 7, 2003Assignees: Outlast Technologies, Inc., R. H. Wyner Associates, Inc.Inventors: Joseph L. Zuckerman, Robert J. Pushaw, Bernard T. Perry, Daniel M. Wyner
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Publication number: 20020171170Abstract: A method and composition are provided for applying a single aqueous coating composition to a composite substrate during an in-press molding operation to achieve (i) improved initial whiteness in a white pigmented composition, (ii) excellent color retention/stability and (iii) excellent press release properties. The aqueous coating composition incorporates an ion exchange resin and serves as a combined sealer and topcoat finish for press molded composite substrates.Type: ApplicationFiled: February 25, 2002Publication date: November 21, 2002Inventors: Anne Seton DeMasi, Rosemarie Palmer Lauer
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Publication number: 20020156159Abstract: Increasing the viscosity of latex dipping media is achieved by adding a minor amount of a viscosity-increasing fumed silica. The more viscous latex dispersions allow preparation of dipped articles of increased thickness at the same latex solids concentration. The dipped articles, for example surgical gloves, contain low levels of extractable proteins.Type: ApplicationFiled: March 15, 2002Publication date: October 24, 2002Inventor: Shimon Amdur
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Patent number: 6462125Abstract: A pigment dispersion that includes a pigment, an aqueous carrier, and a pigment dispersant. The pigment dispersant is prepared by atom transfer radical polymerization initiated and has the polymer chain structure: &phgr;—(G)p—(E)a—T where G is a residue of at least One ethylenically unsaturated monomer; E is a hydrophilic residue of at least one ethylenically unsaturated monomer; &phgr; is a hydrophobic residue of or derived from an initiator; T is or is derived from a radically transferable group from the initiator, p and s represent average numbers of residues occurring in a block of residues; p and s are each individually selected such that said pigment dispersant has a number average molecular weight of at least 250.Type: GrantFiled: December 16, 1999Date of Patent: October 8, 2002Assignee: PPG Industries Ohio, Inc.Inventors: Daniela White, Simion Coca, James B. O'Dwyer
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Publication number: 20020132880Abstract: The present invention discloses A method for producing a dot-printless light guide plate for a liquid crystal display device using an addition polymerized norbornene copolymer represented by the following general formula (1): 1Type: ApplicationFiled: October 1, 2001Publication date: September 19, 2002Inventors: Jin Sung Choi, Jae Geun Park, Bong Seok Moon, Keun Byoung Yoon
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Patent number: 6451265Abstract: An assembly for mixing a polymer with water and activating the polymer includes a water/polymer mixing chamber immediately preceding a high shear nozzle formed by a spring loaded plug seated against an outlet orifice of the mixing chamber.Type: GrantFiled: January 21, 1997Date of Patent: September 17, 2002Inventor: Alfonso M. Misuraca
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Patent number: 6409822Abstract: An aqueous suspension is provided including a mixture of at least one aqueous suspension of precipitated silica and of at least one latex, in which the aqueous suspension of precipitated silica has a solids content of between 10 and 40% by weight, has a viscosity lower than 4×10−2 Pa s at a shear of 50 s−1 and, after centrifuging at 7500 revolutions per minute for 30 minutes, produces a supernatant containing more than 50% of the weight of the silica initially in suspension. This suspension can be employed in compositions based on an inorganic binder and in concrete compositions.Type: GrantFiled: February 4, 1999Date of Patent: June 25, 2002Assignee: Rhodia ChimieInventors: Evelyne Prat, Laurent Frouin
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Publication number: 20020059885Abstract: This invention relates to an aqueous suspension including a mixture of at least one aqueous suspension of precipitated silica and of at least one latex, in which the said aqueous suspension of precipitated silica has a solids content of between 10 and 40% by weight, has a viscosity lower than 4×10−2 Pa s at a shear of 50 s−1 and, after centrifuging at 7500 revolutions per minute for 30 minutes, produces a supernatant containing more than 50% of the weight of the silica initially in suspension.Type: ApplicationFiled: February 4, 1999Publication date: May 23, 2002Inventors: EVELYNE PRAT, LAURENT FROUIN
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Patent number: 6369153Abstract: The present invention relates to a water-redispersible pulverulent composition obtained by a mixing and then drying an emulsion of at least one water-insoluble film-forming polymer, at least one main surfactant and at least one water-soluble compound, comprising a) an emulsion of at least one water-insoluble film-forming polymer prepared from ethylenically unsaturated monomers, b)at least one main surfactant whose water/surfactant binary phase diagram contains an isotropic phase which is fluid at 25° C. up to a concentration of at least 50% by weight of surfactant, followed by a hexagonal or cubic type rigid liquid crystal phase at higher concentrations which is stable at least up to the drying temperature, and c) at least one water-soluble compound. The invention relates, in addition, to a process for preparing such a composition and to its use.Type: GrantFiled: August 3, 2000Date of Patent: April 9, 2002Assignee: Rhodia ChimieInventors: Gilles Guerin, Mikel Morvan
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Patent number: 6361916Abstract: A composition that is useful in a wide variety of applications comprises a latex having water as a continuous phase and, as the dispersed phase, hydrophobic polymer particles having associated therewith both a dye and a stabilizer for the dye. In a particularly preferred embodiment, the dye is an infrared absorbing dye. The composition can be used as an inkjet ink, as a coating composition to form an infrared sensitive optical recording layer or for other purposes.Type: GrantFiled: December 14, 1999Date of Patent: March 26, 2002Assignee: Eastman Kodak CompanyInventors: Huijuan D. Chen, Tien-Teh Chen, Kevin W. Williams