Patents Assigned to Akzo
  • Patent number: 6802958
    Abstract: 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: Grant
    Filed: November 13, 2000
    Date of Patent: October 12, 2004
    Assignees: Nippon Ketjen Co., Ltd., Akzo Nobel NV
    Inventors: Nobuhito Matsumoto, Eiichi Yano, Masafumi Shimowake, Tetsuro Kamo
  • Patent number: 6803436
    Abstract: 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: Grant
    Filed: December 19, 2001
    Date of Patent: October 12, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Petrus Paulus Waanders, Bart Fischer, Johannes Isodorus Roes
  • Patent number: 6800578
    Abstract: 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: Grant
    Filed: October 15, 2002
    Date of Patent: October 5, 2004
    Assignee: Akzo Nobel NV
    Inventors: Dennis Stamires, Paul O'Connor, William Jones, Michael Brady
  • Patent number: 6800130
    Abstract: 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: Grant
    Filed: February 3, 2003
    Date of Patent: October 5, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Patent number: 6800263
    Abstract: 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: Grant
    Filed: December 11, 2001
    Date of Patent: October 5, 2004
    Assignee: Akzo Nobel N.V.
    Inventor: Herman Frans Boon
  • Patent number: 6797136
    Abstract: 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: Grant
    Filed: September 4, 2002
    Date of Patent: September 28, 2004
    Assignee: Akzo Nobel N.V.
    Inventor: Takayuki Shimamune
  • Patent number: 6797710
    Abstract: 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: Grant
    Filed: June 20, 2002
    Date of Patent: September 28, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Constant Adriaan Anton van Boeckel, Philippus Johannes Marie van Galen, Johannes Bernardus Maria Rewinkel
  • Patent number: 6790446
    Abstract: 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: Grant
    Filed: July 10, 2002
    Date of Patent: September 14, 2004
    Assignee: Akzo Nobel, NV
    Inventors: Antonius Arnoldus Christiaan Jacobs, Johannes Franciscus van den Bosch, Petrus Johannes Maria Nuijten
  • Patent number: 6787497
    Abstract: 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: Grant
    Filed: September 28, 2001
    Date of Patent: September 7, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Anna-Carin Dellve, Bozena Tokarz, Mats Nyström
  • Patent number: 6787598
    Abstract: 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: Grant
    Filed: May 21, 2002
    Date of Patent: September 7, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Robertus Jozef Franciscus Jans, Eugene Michael Arnoldus De Jong
  • Patent number: 6787137
    Abstract: 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: Grant
    Filed: April 7, 2000
    Date of Patent: September 7, 2004
    Assignee: Akzo Nobel N. V.
    Inventors: Antonius Arnoldus Christiaan Jacobs, Johannes Franciscus van den Bosch, Petrus Johannes Maria Nuijten
  • Patent number: 6783764
    Abstract: 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: Grant
    Filed: August 31, 1999
    Date of Patent: August 31, 2004
    Assignee: Akzo Nobel NV
    Inventors: Ruud Philip Antoon Maria Segers, Joachim Frey
  • Patent number: 6784325
    Abstract: 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: Grant
    Filed: April 26, 2001
    Date of Patent: August 31, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Anantha N. Desikan, George E. Whitwell
  • Patent number: 6783846
    Abstract: 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: Grant
    Filed: February 5, 2003
    Date of Patent: August 31, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Kerstin Larsson, Erland Hermansson
  • Patent number: 6780854
    Abstract: 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: Grant
    Filed: October 24, 2002
    Date of Patent: August 24, 2004
    Assignee: Akzo Nobel NV
    Inventors: Hubert Jan Jozef Loozen, Dirk Leysen, Jaap van der Louw
  • Publication number: 20040162436
    Abstract: 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: Application
    Filed: December 1, 2003
    Publication date: August 19, 2004
    Applicant: AKZO NOBEL N.V.
    Inventors: Bart Fischer, John Meijer, Rolf Hendrik Van Den Berg, Johan Nuysink
  • Patent number: 6776899
    Abstract: 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: Grant
    Filed: February 20, 2002
    Date of Patent: August 17, 2004
    Assignees: 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
  • Patent number: 6776928
    Abstract: 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: Grant
    Filed: January 29, 2002
    Date of Patent: August 17, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Tullio Rossini, Franco Folcio, Corrado Dotti
  • Patent number: 6770774
    Abstract: 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: Grant
    Filed: October 23, 2002
    Date of Patent: August 3, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Anna Gerdine Van De Bovenkamp-Bouwman, Joachim Willem J. Van Gendt, John Meijer, Bart Fischer, Andreas Herman Hogt
  • Patent number: 6770679
    Abstract: 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: Grant
    Filed: March 4, 2002
    Date of Patent: August 3, 2004
    Assignee: Akzo Nobel N.V
    Inventor: Elina Sandberg