Patents Assigned to Akzo
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Patent number: 6802958Abstract: The invention pertains to a process for preparing spherical oxide particles comprising the steps of shaping a starting material comprising an oxide hydrate into particles of substantially constant length by leading the material to a set of two rolls rotating towards each other followed by leading the material to a roll equipped with grooves to form rod-type shapes, cutting the rod-type shapes into particles of substantially constant length, converting the thus formed particles into spheres, and heating the particles to convert the oxide hydrate into an oxide. The process results in particles in which there is substantially no difference in density between the core portion and the shell portion of the particles, which results in a high abrasion resistance. The particles prepared by the claimed process are particularly suitable for the preparation of hydroprocessing catalysts, more in particular for the preparation of hydroprocessing catalysts suitable for the hydroprocessing of heavy hydrocarbon feeds.Type: GrantFiled: November 13, 2000Date of Patent: October 12, 2004Assignees: Nippon Ketjen Co., Ltd., Akzo Nobel NVInventors: Nobuhito Matsumoto, Eiichi Yano, Masafumi Shimowake, Tetsuro Kamo
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Patent number: 6803436Abstract: The invention relates to a method to safely produce, handle and transport packaged organic peroxide formulations comprising a reactive phlegmatiser and to the use of such packaged material in polymerisation and polymer modification processes, particularly the high-pressure (co)polymerisation process of ethylene and/or the suspension (co)polymerisation process of styrene.Type: GrantFiled: December 19, 2001Date of Patent: October 12, 2004Assignee: Akzo Nobel N.V.Inventors: Petrus Paulus Waanders, Bart Fischer, Johannes Isodorus Roes
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Patent number: 6800578Abstract: This patent describes economical and environment-friendly processes for the synthesis of anionic clays. It involves reacting a slurry comprising boehmite, which has been peptized with acid with a divalent metal source followed by addition of source of base. The slurry is then hydrothermally aged. There is no necessity to wash or filter the product and it can be spray dried directly to form microspheres, or can be extruded to form shaped bodies. The product can be combined with other ingredients in the manufacture of catalysts, absorbents, pharmaceuticals, cosmetics, detergents, polymeric nanocomposites and other commodity products that contain anionic clays.Type: GrantFiled: October 15, 2002Date of Patent: October 5, 2004Assignee: Akzo Nobel NVInventors: Dennis Stamires, Paul O'Connor, William Jones, Michael Brady
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Patent number: 6800130Abstract: The invention relates to a construction material comprising a hydraulic binder, water, and an aluminum-modified colloidal silica. The invention also relates to a method for preparing such materials and the use thereof.Type: GrantFiled: February 3, 2003Date of Patent: October 5, 2004Assignee: Akzo Nobel N.V.Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
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Patent number: 6800263Abstract: The invention relates to specific non-caking salt (NaCl) compositions with a pH of 1-10 comprising at least one metal (iron, titanium and/or chromium) complex of a hydroxypolycarboxylic acid, a process to make such compositions, as well as the use of such compositions in table salt, road salt, or electrolysis salt. Preferred compositions comprise an iron complex of (meso)tartaric acid for use in membrane electrolysis operations.Type: GrantFiled: December 11, 2001Date of Patent: October 5, 2004Assignee: Akzo Nobel N.V.Inventor: Herman Frans Boon
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Patent number: 6797136Abstract: The present invention relates to a retrofitted electrolytic cell and a method for retrofitting an electrolytic cell comprising an anode and a cathode compartment, a separator partitioning the compartments, said cathode compartment comprising a hydrogen evolving cathode. The method comprises making at least one substantially horizontal slit in the hydrogen evolving cathode resulting in plural cathode members, bending the edge of at least one cathode member at the slit away from the separator, arranging a gas diffusion electrode to the cathode members on the side facing the separator, and arranging an electrolyte layer to the gas diffusion electrode. The invention also relates to the use of a retrofitted electrolytic cell.Type: GrantFiled: September 4, 2002Date of Patent: September 28, 2004Assignee: Akzo Nobel N.V.Inventor: Takayuki Shimamune
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Patent number: 6797710Abstract: The present invention relates to antithrombotic compounds comprising the group Q, Q having formula (I), wherein the substructure (i) is a structure selected from (a, b and c), wherein X is O or S; X′ being independently CH or N; and m is 0, 1, 2 or 3; wherein the group Q is bound through an oxygen atom or an optionally substituted nitrogen or carbon atom, or a pharmaceutically acceptable salt thereof or a prodrug thereof. The compounds of the invention are therapeutically active and in particular are antithrombotic agents.Type: GrantFiled: June 20, 2002Date of Patent: September 28, 2004Assignee: Akzo Nobel N.V.Inventors: Constant Adriaan Anton van Boeckel, Philippus Johannes Marie van Galen, Johannes Bernardus Maria Rewinkel
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Patent number: 6790446Abstract: The present invention relates to vaccines comprising antiserum raised against a flagellaless Campylobacter strain for the prevention of Campylobacter colonization in animals. The invention also relates to antigenic Campylobacter proteins visible in a Western blot of Campylobacter jejuni protein after incubation of said Western blot with antibodies against a flagellaless mutant of Campylobacter jejuni and not visible after incubation of said blot with antibodies against wild type Campylobacter jejuni, and to their use in vaccines and the manufacturing thereof. The invention further relates to vaccines comprising such proteins and antibodies against such proteins. The invention further relates to the use of such Campylobacter proteins and to antiserum and antibodies raised against Campylobacter antigens for the preparation of vaccines. Finally, the invention relates to methods for the preparation of such vaccines.Type: GrantFiled: July 10, 2002Date of Patent: September 14, 2004Assignee: Akzo Nobel, NVInventors: Antonius Arnoldus Christiaan Jacobs, Johannes Franciscus van den Bosch, Petrus Johannes Maria Nuijten
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Patent number: 6787497Abstract: The invention concerns a catalyst carrier comprising a fibre paper impregnated with a slurry comprising silica sol, micro fibres and a filler, wherein said micro fibres have an equivalent average particle size, measured with sedigraph method, from about 200 nm to about 30000 nm and said filler has an average equivalent particle size, measured with sedigraph method, from about 300 to about 10000 nm. The invention further concerns a method of its preparation, a slurry useful therefore, a catalyst comprising such a catalyst carrier and use of the catalyst.Type: GrantFiled: September 28, 2001Date of Patent: September 7, 2004Assignee: Akzo Nobel N.V.Inventors: Anna-Carin Dellve, Bozena Tokarz, Mats Nyström
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Patent number: 6787598Abstract: A pigment paste for tinting a coating composition, the pigment paste comprising at least one branched alkyd having a viscosity below 5 Pa.s, preferably below 3.5 Pa.s, at 23° C. and at a shear rate of 100 s−1, and pigment. The pigment paste can also include an aromate-free solvent. The number average molecular weight Mn of the alkyd is preferably between 2,000 and 2,400 g/mole. The degree of branching of the alkyd is preferably at least 0.35 and preferably below 0.42. The oil length is preferably between 76 and 84. The VOC is preferably below 250 g/l.Type: GrantFiled: May 21, 2002Date of Patent: September 7, 2004Assignee: Akzo Nobel N.V.Inventors: Robertus Jozef Franciscus Jans, Eugene Michael Arnoldus De Jong
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Patent number: 6787137Abstract: The present invention relates to vaccines comprising antiserum raised against a flagellaless Campylobacter strain for the prevention of Campylobacter colonisation in animals. The invention also relates to antigenic Campylobacter proteins visible in a Western blot of Campylobacter jejuni protein after incubation of said Western blot with antibodies against a flagellaless mutant of Campylobacter jejuni and not visible after incubation of said blot with antibodies against wild type Campylobacter jejuni, and to their use in vaccines and the manufacturing thereof. The invention further relates to vaccines comprising such proteins and antibodies against such proteins. The invention further relates to the use of such Campylobacter proteins and to antiserum and antibodies raised against Campylobacter antigens for the preparation of vaccines. Finally, the invention relates to methods for the preparation of such vaccines.Type: GrantFiled: April 7, 2000Date of Patent: September 7, 2004Assignee: Akzo Nobel N. V.Inventors: Antonius Arnoldus Christiaan Jacobs, Johannes Franciscus van den Bosch, Petrus Johannes Maria Nuijten
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Patent number: 6783764Abstract: The present invention relates to live attenuated bacteria of the genus Actinobacillus pleuropneumoniae that have a mutation in an apxIV gene such that no functional ApxIV toxin can be produced. The invention also relates to methods for the production of such bacteria. Also vaccines comprising such bacteria and methods for the production of such vaccines are part of the invention. The invention further relates to subunit vaccines comprising an ApxIV toxin, to methods for the production of such vaccines and to methods for the protection of animals against infection with bacteria of the genus Actinobacillus pleuropneumoniae. In addition, the invention relates to the promotor of the apxIV gene. Finally, the invention relates to diagnostic test for the selective diagnosis of Actinobacillus pleuropneumoniae infections and to diagnostic tests discriminating between Actinobacillus pleuropneumoniae field strains and vaccine strains.Type: GrantFiled: August 31, 1999Date of Patent: August 31, 2004Assignee: Akzo Nobel NVInventors: Ruud Philip Antoon Maria Segers, Joachim Frey
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Patent number: 6784325Abstract: The isomerization of an alkylated phenol composition that contains an ortho-alkyl substituted phenol component to isomerize and reduce the level of ortho-alkyl substituted phenol component therein can be accomplished by heating that composition in the presence of a catalytically effective amount of a solid acid catalyst to carry out such isomerization and reduction in the level of ortho-alkyl substituted phenol. Examples of suitable solid acid catalysts can be selected from the H-form zeolites, the supported sulfonic acids, and the heteropoly acids. The resulting isomerized product can be subsequently phosphorylated.Type: GrantFiled: April 26, 2001Date of Patent: August 31, 2004Assignee: Akzo Nobel N.V.Inventors: Anantha N. Desikan, George E. Whitwell
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Patent number: 6783846Abstract: The present invention relates to use of an alkylhydroxyalkyl cellulose, which has alkyl groups having 1-3 carbon atoms and hydroxyalkyl groups having 2-3 carbon atoms, is free from hydrophobically modifying alkyl groups having at least 4 carbon atoms and has a turbidity point of 50-95° C. The amount of carboxymethyl cellulose constitutes up to 1200 percent by weight of the amount of alkylhydroxyalkyl cellulose. An aqueous coating composition containing a combination of alkylhydroxyethyl cellulose and carboxymethyl cellulose is also described.Type: GrantFiled: February 5, 2003Date of Patent: August 31, 2004Assignee: Akzo Nobel N.V.Inventors: Kerstin Larsson, Erland Hermansson
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Patent number: 6780854Abstract: Novel, orally active androgens are 7&agr;-substituted &Dgr;14-nandrolone derivatives. The compounds satisfy the general formula: wherein R1 is O, (H,H), (H,OR), NOR, with R being hydrogen, (C1-6) alkyl, or (C,1-6) acyl; R2 is selected from the group consisting of (C2-4) alkyl, (C2-4) alkenyl, or (C2-4) alkynyl, each optionally substituted by halogen; or R2 is cyclopropyl, or cyclopropenyl, each optionally substituted by (C1-2) alkyl, or halogen; R3 is hydrogen, (C1-2) alkyl, or ethenyl; R4 is (C1-2) alkyl; R5 is hydrogen, or (C1-15) acyl; and the dotted lines indicate optional bonds.Type: GrantFiled: October 24, 2002Date of Patent: August 24, 2004Assignee: Akzo Nobel NVInventors: Hubert Jan Jozef Loozen, Dirk Leysen, Jaap van der Louw
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Publication number: 20040162436Abstract: The present invention relates to a cyclic ketone peroxide formulation comprising one or more crystallizing cyclic ketone peroxides, one or more co-crystallizing compounds which solidify in said cyclic ketone peroxide formulation at a temperature above the crystallization temperature of the crystallizing cyclic ketone peroxide, and, optionally, one or more conventional phlegmatizers (diluents). These formulations show improved safety and storage stability compared to conventional cyclic ketone peroxide formulations. The invention also pertains to the use of these formulations in (co)polymerization and (co)polymer modification processes.Type: ApplicationFiled: December 1, 2003Publication date: August 19, 2004Applicant: AKZO NOBEL N.V.Inventors: Bart Fischer, John Meijer, Rolf Hendrik Van Den Berg, Johan Nuysink
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Patent number: 6776899Abstract: The present invention relates to a cracking catalyst composition comprising a physical mixture of 10-90 weight % of a cracking catalyst A and 90-10 weight % of a cracking catalyst B, whereby catalyst A is a zeolite-containing cracking catalyst, and catalyst B is a catalyst having a higher average pore volume in the pore diameter range of 20-200 Å than catalyst A in the same pore diameter range and not containing M41S material. These compositions can suitably used for the fluid catalytic cracking of hydrocarbon feeds with high metal concentrations.Type: GrantFiled: February 20, 2002Date of Patent: August 17, 2004Assignees: Akzo Nobel N.V., Petroleo Brasileiro S.A.Inventors: Yiu Lau Lam, Anselmo Da Silva Santos, Rodolfo Eugenio Roncolatto, Marcelo Andre Torem, Edisson Morgado, Jr., Paul O'Connor
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Patent number: 6776928Abstract: The invention relates to an electrically conductive powder coating composition having anti-static properties comprising metallic fibers. Further, the coating composition shows effective EMF shielding. Very good results are found when the metallic fibers have an L/D ratio in the range between 5 and 75, wherein L is the length of the fiber and D is the diameter of the fiber. In a preferred embodiment stainless steel fibers are incorporated in the powder coating composition.Type: GrantFiled: January 29, 2002Date of Patent: August 17, 2004Assignee: Akzo Nobel N.V.Inventors: Tullio Rossini, Franco Folcio, Corrado Dotti
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Patent number: 6770774Abstract: The invention relates to a preparation process for making peroxy esters and peroxy carbonates, peroxy ester peroxy carbonates, mixed diperoxides, mixed diperoxy esters, and mixed diperoxy carbonates, and to specific monoperoxy esters, monoperoxy carbonates, mixed peroxides, mixed diperoxy esters, mixed diperoxy carbonates, peroxy ester peroxy carbonates, and mixtures thereof. The process involves the reaction of a type-3 ketone peroxide with a reactive carbonyl compound and optional subsequent reaction with an alkyl vinyl ether, acetal, halogen formate, or carboxylic acid anhydride.Type: GrantFiled: October 23, 2002Date of Patent: August 3, 2004Assignee: Akzo Nobel N.V.Inventors: Anna Gerdine Van De Bovenkamp-Bouwman, Joachim Willem J. Van Gendt, John Meijer, Bart Fischer, Andreas Herman Hogt
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Patent number: 6770679Abstract: The present invention relates to nonionic compounds of the polyoxymethylene type that are low-foaming and can be used as surfactants, especially in cleaning compositions at an alkaline pH. They are obtained from unsaturated nitriles, that have been epoxidized with e.g. hydrogen perroxide, and alkyl blocked polyalkylene glycols. The nonionic nitrile surfactants can be reacted further with e.g. hydrogen peroxide under alkaline conditions to obtain nonionic amide surfactants. Amide derivatives of this type could also be obtained by reaction between ammonia or a primary or secondary amine and an acid or ester. The nonionic compounds exhibit one or several structure elements according to formula (II) in the aliphatic carbon chain where AO is an alkyleneoxy group containing 2-4 carbon atom, R3 is an alkyl group with 1-4 carbon atoms and n is a number between 1 and 30.Type: GrantFiled: March 4, 2002Date of Patent: August 3, 2004Assignee: Akzo Nobel N.VInventor: Elina Sandberg