Patents Assigned to Akzo
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Publication number: 20100119850Abstract: Coating composition suitable for coating a metal, preferably steel, substrate which is intended to be fabricated and overcoated, said composition comprising: i) zinc powder and/or a zinc alloy and ii) a modified silica sol comprising colloidal silica particles modified with 6-40 wt % of one or more silane compounds, based on the combined dry weight of silane compound(s) and colloidal silica particles, and being obtainable by adding said silane compound(s) to a silica sol with a rate of not more than 20 silane molecules per nm2 colloidal silica surface per hour. This coating composition has a relatively long pot life, good white rust resistance, and good film properties.Type: ApplicationFiled: April 16, 2008Publication date: May 13, 2010Applicant: Akzo Nobel Coating Internatinal B.V.Inventors: Victoria Browne, Paul Anthony Jackson, Alistair James Reid, Peter Harry Johan Greenwood
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Publication number: 20100112351Abstract: The present invention relates to a method of preparing microfibrillar polysaccharide comprising treating a polysaccharide in an aqueous suspension comprising an oxidant and at least one transition metal, mechanically delaminating said polysaccharide such that microfibrillar polysaccharide is formed. The invention also relates to microfibrillar polysaccharide obtainable by the method.Type: ApplicationFiled: January 12, 2010Publication date: May 6, 2010Applicant: AKZO NOBEL N.V.Inventor: Anette HEIJNESSON-HULTEN
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Patent number: 7709555Abstract: Coating composition comprising one or more polythiols and one or more polyisocyanates and a latent base catalyst which is activatable by moisture, wherein the equivalence ratio NCO:SH is between 1:2 and 2:1. The latent catalyst is selected from the group of oxazolidine, aldimine, ketimine, and enamine. The latent catalyst is present in an amount of up to 20% relative to the weight of the curable material. The composition further comprises one or more photoinitiators in an amount of up to 4% relative to the weight of the curable material.Type: GrantFiled: September 16, 2005Date of Patent: May 4, 2010Assignee: Akzo Nobel Coatings InternationalInventors: Franciscus Huburtus Maria Stappers, Joseph Theodorus Maria Van Dijk
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Patent number: 7700764Abstract: The present invention relates to a method of preparing microfibrillar polysaccharide comprising treating a polysaccharide in an aqueous suspension comprising an oxidant and at least one transition metal, mechanically delaminating said polysaccharide such that microfibrillar polysaccharide is formed. The invention also relates to microfibrillar polysaccharide obtainable by the method.Type: GrantFiled: May 31, 2006Date of Patent: April 20, 2010Assignee: Akzo Nobel N.V.Inventor: Anette Heijnesson-Hultén
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Publication number: 20100092766Abstract: The invention relates to a water borne coating composition comprising a polyurethane and a polyisocyanate, wherein the composition further comprises a compound having a molecular weight of at most 1,000 and having at least two isocyanate-reactive groups, with the proviso that said compound having a molecular weight of at most 1,000 and having at least two isocyanate-reactive groups is not a poly(ethylene glycol), and that the polyurethane differs from the material formed by reaction of the polyisocyanate and the compound having a molecular weight of at most 1,000 and having at least two isocyanate-reactive groups.Type: ApplicationFiled: February 29, 2008Publication date: April 15, 2010Applicant: Akzo Nobel Coating International B.V.Inventors: Christy Stine, Eric Orvis, Nadir Zia Yousif, Donald Albert Paquet, Kirk Martin Sample, Alexander Leo Yahkind
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Publication number: 20100084605Abstract: The present invention pertains to a process for preparing a concentrated alkali metal hypochlorite solution by reacting chlorine with an alkali metal hydroxide to form alkali metal hypochlorite, alkali metal chloride, and water, wherein one or more aqueous solutions comprising an alkali metal hydroxide and alkali metal hypochlorite are led in a swirling flow through one or more inlet pipes of a reaction vessel, wherein chlorine is injected into said reaction vessel at its top part and flows downwards through said one or more inlet pipes, and wherein the outflow openings of the one or more inlet pipes are arranged such that the solution leaving said outflow openings, being supersaturated with alkali metal chloride, is directed through a fluidized bed of said alkali metal chloride, while the flow direction is converted upwards through said fluidized bed.Type: ApplicationFiled: November 30, 2007Publication date: April 8, 2010Applicant: AKZO NOBEL N.V.Inventors: Hendrikus Wilhelmus Bakkenes, Mateo Jozef Jacques Mayer, Gerhard Fokko Remmers, Jan Visser
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Patent number: 7691960Abstract: The present invention relates to a composition of citric acid based emulsifiers comprising polyamides for oilfield drilling applications that exhibit very low fluorescence, and to a process for their preparation.Type: GrantFiled: May 19, 2004Date of Patent: April 6, 2010Assignee: Akzo Nobel N.V.Inventor: Rodney Lee Cravey
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Patent number: 7691234Abstract: The present invention relates to an aqueous composition comprising anionic organic polymeric particles and colloidal anionic silica-based particles. The anionic organic polymeric particles are obtainable by polymerizing one or more ethylenically unsaturated monomers together with one or more polyfunctional branching agents and/or polyfunctional crosslinking agents. The anionic organic polymeric particles and the colloidal anionic silica-based particles in the aqueous composition are present in an amount of at least 0.01% by weight based on the total weight of the aqueous composition. The present invention further relates to a method for the preparation of the aqueous composition, uses of the aqueous composition and a process for the production or paper, in which the aqueous composition is added to a cellulosic suspension.Type: GrantFiled: February 21, 2006Date of Patent: April 6, 2010Assignee: Akzo Nobel N.V.Inventors: Duncan Carr, Michael Sigman
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Patent number: 7691938Abstract: The invention relates to a silyl ester copolymer solution having a solids content of at least 55 weight percent and a viscosity of less than 20 poise at 25° C., comprising a silyl ester copolymer having a weight-average molecular weight of less than 20,000. The invention further relates to coating compositions comprising a silyl ester copolymer and to substrates and structures having a cured coating prepared from such a coating composition.Type: GrantFiled: June 29, 2004Date of Patent: April 6, 2010Assignee: Akzo Nobel Coatings International B.V.Inventor: Alistair Andrew Finnie
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Publication number: 20100075161Abstract: The invention relates to an aqueous pigment composition comprising polyalkylene glycol and inorganic pigment particle comprising colloidal silica or silicate based particles or aggregates thereof, wherein polyalkylene glycol constitutes from 50 to 100 wt % of the total amount of organic material in the composition and the weight ratio of colloidal silica 5 or silicate based particles or aggregates thereof to organic material in the composition is from 1:3 to 30:1. The invention further relates to a process for its production, use thereof, a process for coating paper or paper board and coated paper or paper board.Type: ApplicationFiled: January 25, 2008Publication date: March 25, 2010Applicant: AKZO NOBEL N.V.Inventors: Erik Lindgren, Kjell Rune Andersson, Olof Ericksson, Yiva Wildlock
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Publication number: 20100072309Abstract: An electrostatic paint spraying device (10) comprising a paint canister (16) fluidly connected to a nozzle of the paint spraying device, in which the nozzle comprises a spray head (50) having a plurality of channels from which paint is propelled.Type: ApplicationFiled: December 18, 2007Publication date: March 25, 2010Applicant: AKZO NOBEL COATINGS INTERNATIONAL B.V.Inventors: Jeremy David Hodge, John Ord, Mike Cane, Mike Beadman, Andrew White, Nick Field
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Patent number: 7682485Abstract: The present invention relates to a process for improving the absorption rate for paper products. The process comprises treating a cellulosic fiber web comprising applying to said cellulosic fiber web at least one polymer; and colloidal particles.Type: GrantFiled: December 13, 2006Date of Patent: March 23, 2010Assignee: Akzo Nobel N.V.Inventor: Pavol Barla
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Patent number: 7682592Abstract: The invention relates to a continuous process for producing chlorine dioxide comprising the steps of continuously: a) feeding to a reactor (1) an acid, hydrogen peroxide and alkali metal chlorate; b) reacting the alkali metal chlorate with the acid and the hydrogen peroxide to form a product stream (2) containing chlorine dioxide, oxygen and alkali metal salt of the acid, c) bringing the product stream from the reactor to an eductor (3) and mixing it with motive water fed to the eductor and thereby forming a diluted product stream; d) removing oxygen from the diluted product stream; e) withdrawing part of the diluted product stream (9), before, during or after the step of removing oxygen; f) adding water (11) to the non-withdrawn part of the diluted product stream to form a recycle stream (12); and, g) bringing the recycle stream (12) to the eductor and feeding it thereto as motive water (4).Type: GrantFiled: November 18, 2005Date of Patent: March 23, 2010Assignee: AKZO Nobel N.V.Inventors: Gary Charles, Daniel D. Olson, Patrick S. Bryant
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Publication number: 20100069280Abstract: Hybrid copolymers for use as anti-sealant and dispersant. The polymers are useful in compositions used in aqueous systems. The polymers include at least one synthetic monomeric constituent that is chain terminated by a naturally occurring hydroxyl containing moiety. A process for preparing these hybrid copolymers is also provided.Type: ApplicationFiled: November 24, 2009Publication date: March 18, 2010Applicant: Akzo Nobel N.V.Inventors: Klin A. RODRIGUES, Darin K. Griffith
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Publication number: 20100068560Abstract: Process for preparing a cross-linked rubber article comprising the steps of: a) applying a sulfur-containing composition to the surface of a pre-shaped peroxide-containing cross-linkable rubber article to provide a sulfur-coated article, and b) cross-linking the rubber by heating the sulfur-coated article, optionally in the presence of air, at a temperature in the range of 80 to 300° C. to obtain the cross-linked rubber article.Type: ApplicationFiled: December 14, 2007Publication date: March 18, 2010Applicant: AKZO NOBEL N.V.Inventors: Johannes Gerhardus Bernardus Bouwmeester, Robert Alex De Gunst, Haimo Tonnaer
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Publication number: 20100065238Abstract: A process for producing an aqueous silica-based sol is disclosed wherein a cationic ion exchange resin having part of its ion exchange capacity in hydrogen form is contacted with an aqueous alkali metal silicate to form a slurry having a pH from 5.0 to 11.5 and/or having particle aggregation or microgel formation corresponding to a S value up to 45%; adjusting the pH using a material comprising an aluminium compound; and separating the resin from the slurry. Silica-based sols having an S value from 15 to 25%, mole ratio Si:Al from 20:1 to 50:1, mole ratio Si:X, where X=alkali metal, from 5:1 to 17:1, SiO2 content of at least 5% by weight and containing silica-based particles having a specific surface area of at least 300 m2/g, as well as the use of such silica-based sols in producing paper are disclosed.Type: ApplicationFiled: November 20, 2009Publication date: March 18, 2010Applicant: AKZO NOBEL N. V.Inventors: Johan NYANDER, Glenn Mankin
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Patent number: 7678224Abstract: The present invention relates to a method for reducing emissions of one or more gaseous substances from an assembly of at least two pieces of wooden materials, which have been glued together. It also relates to a method for producing a laminated wooden product comprising planing at least one of the sides of an assembly having glue lines exposed, and, treating the one or more planed sides by application of one or more treating substances reactive to one or more gaseous substances emitted from the at least one planed side. Finally, the present invention relates to a laminated wooden product having low emissions.Type: GrantFiled: March 25, 2004Date of Patent: March 16, 2010Assignee: Akzo Nobel N.V.Inventors: Benyahia Nasli-Bakir, Hans Ekblom
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Publication number: 20100062199Abstract: A dispersion of polymer microparticles in organic liquid, the polymer comprising the reaction product of i) from 2 to 40 parts by weight of a first polymer being polypropylene polymer having sufficient carboxylic acid and/or carboxylic acid anhydride groups equivalent to an acid value of from 2 to 50 mg KOH/g nv polymer and ii) from 60 to 98 parts by weight of a second polymer having a molar excess of functional groups capable of reacting with the carboxylic acid and/or carboxylic acid anhydride groups of the polypropylene polymer and wherein the organic liquid is chosen to be a good solvent for the second polymer and a poor solvent for the polypropylene polymer.Type: ApplicationFiled: April 30, 2008Publication date: March 11, 2010Applicant: Akzo Nobel Coatings International B.V.Inventors: Riaz Ahmad Choudhery, David George James
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Patent number: 7674860Abstract: The invention relates to a redispersible powder obtainable by (co)polymerization, using a polymer with cationic functionality in an aqueous medium, optionally accompanied by the use of conventional additives, the polymer with cationic functionality being obtained by (co)polymerization in an aqueous medium of olefinically unsaturated (co)monomers, wherein at least one (co)monomer has a cationic functionality, further (co)monomers are added and polymerization takes place in the presence of suitable initiators, and by drying the aqueous dispersion obtained, the (co)polymerizate having one or more reactive groups. According to another embodiment, the polymer with cationic functionality is formed in situ in the presence of a seed. According to another embodiment, the process is controlled in such a way that a (co)polymerizate particle with heterogeneous morphology is formed. The invention also relates to the aqueous dispersions, a process for the preparation of the redispersible powder and the use thereof.Type: GrantFiled: December 12, 2007Date of Patent: March 9, 2010Assignee: Akzo Nobel N.V.Inventors: Hongli Willimann, Robert Koelliker
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Patent number: RE41208Abstract: The invention relates to a polymer comprising quaternary ammonium and/or quaternary phosphonium groups bound to the backbone of the polymer, said quaternary ammonium groups and/or quaternary phosphonium groups being neutralised by counter-ions, wherein the counter-ions consist of the anionic residue of an acid having an aliphatic, aromatic, or alkaryl hydrocarbon group comprising 6 or more carbon atoms. The invention further relates to the preparation of this polymer, its use in anti-fouling compositions, and to anti-fouling compositions comprising the polymer.Type: GrantFiled: February 14, 2008Date of Patent: April 6, 2010Assignee: Akzo Nobel N.V.Inventors: Robert Lines, Clayton Price