Patents Assigned to Akzo
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Publication number: 20110085995Abstract: A self-stabilizing dispersion composition having a copolymer having at least one polymerizable acid-containing moiety, wherein the at least one acid-containing moiety is at least partially neutralized before or during polymerization, and at least one hydrophobic moiety. A process for producing such compositions is also provided, as well as a process for encapsulating water-insoluble actives in such copolymers.Type: ApplicationFiled: December 20, 2010Publication date: April 14, 2011Applicant: AKZO NOBEL N.V.Inventors: Klein A. Rodrigues, Darin K. Griffith
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Patent number: 7923113Abstract: The invention relates to a multi-layer coating system comprising at least one layer a) comprising a coating composition a) comprising at—least one isocyanate-functional compound and at least one thiol-functional compound, and—at least one layer b) comprising an aqueous coating composition b), wherein at least one layer a) and at least one layer b) have at least one common layer boundary, and wherein coating composition b) comprises at least 17 mmol/kg, calculated on the weight of coating composition b), of a catalyst for the addition reaction of the at least one thiol-functional compound and the at least one isocyanate-functional compound.Type: GrantFiled: December 12, 2006Date of Patent: April 12, 2011Assignee: Akzo Nobel Coating International B.V.Inventors: Nazire Dogan, Josef Pancratius Maria Jonker, Robertus Petrus Cornelis Van Der Krogt, Peter Wijnands
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Publication number: 20110082290Abstract: A superhydrophilic amphiphilic copolymer and process for making the superhydrophilic amphiphilic copolymer includes a low molecular weight polysaccharide modified with a hydrophobic reagent, such as substituted succinic anhydride. The superhydrophilic amphiphilic copolymer system generates stable foam for use in applications, such as healthcare formulations, with low irritation of the eyes and skin.Type: ApplicationFiled: October 7, 2009Publication date: April 7, 2011Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Joseph B. Gardner, Michael J. Fevola, Frank C. Sun
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Patent number: 7919074Abstract: Ethanol soluble or dispersible polyetheramide polymers that have a percent elongation to break of less than 100%. The polymers are formed from a reaction mixture comprising at least one or more poly(alkyleneoxy) diamines and one or more diacids. The reaction mixture can optionally include one or more aliphatic diamines in addition to the one or more poly(alkyleneoxy) diamines. The polyetheramide polymers have application in personal care compositions such as hair fixative compositions, for example, hair spray formulations.Type: GrantFiled: May 18, 2006Date of Patent: April 5, 2011Assignee: Akzo Nobel N.V.Inventors: Michael Philbin, Carmine Iovine, Jean-Pierre Leblanc
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Patent number: 7919535Abstract: The invention relates to an aqueous sol containing silica-based particles which sol has a specific surface area of at least 115 m2/g aqueous sol and an S-value within the range of from 10 to 45% or contains silica-based particles having a specific surface area of at least 550 m2/g and less than 1000 m2/g SiO2. The invention further relates to processes for the production of said aqueous sol and the use of the aqueous sol containing silica-based particles as a drainage and retention aid in the production of paper as well as a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional filler, in which silica-based particles and at least one charged organic polymer are added to the cellulosic suspension.Type: GrantFiled: January 8, 2005Date of Patent: April 5, 2011Assignee: Akzo Nobel N.V.Inventors: Michael Persson, Marek Tokarz, Maj-Lis Dahlgren, Hans Johansson-Vestin
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Patent number: 7918987Abstract: The present invention provides a process to prepare a halogenated carbonyl group-containing compound by electrochemically reacting the corresponding carbonyl group-containing compound with a hydrogen halide H—X, an organic halide R?—X and/or a halide salt Mn+—Xn? under substantially water-free conditions, wherein X is a chlorine, bromine or iodine atom, R? is an alkyl or aryl group that may be linear or branched, optionally containing one or more heteroatoms such as oxygen, nitrogen, chloride, bromide, fluoride or iodide of which the halogen atom X can be electrochemically split off, Mn+ is a quaternary ammonium, alkaline earth metal, alkali metal or metal cation, and n is an integer of 1 to 5, depending on the valency of the metal cation Mn+.Type: GrantFiled: May 11, 2007Date of Patent: April 5, 2011Assignee: Akzo Nobel N.V.Inventors: Hans Lammers, Willem Koelewijn, Johannes Wilhelmus Franciscus Lucas Seetz, Joldert Faber
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Publication number: 20110065812Abstract: 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 aluminum 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 15, 2010Publication date: March 17, 2011Applicant: AKZO NOBEL N.V.Inventors: Johan NYANDER, Glenn MANKIN
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Publication number: 20110054192Abstract: The present invention pertains to a process for the preparation of an alkenyl-substituted cyclic anhydride compound comprising the steps of subjecting one or more olefinically unsaturated C6-C28 hydrocarbons of which at least 30% by weight is alpha-olefin to a double bond isomerization step by contacting them with a catalyst comprising an alkali metal on a carrier, and reacting the resulting isomehzed olefinic C6-C28 hydrocarbons with a cyclic anhydride of an unsaturated dicarboxylic acid to form the alkenyl-substituted cyclic anhydride compound. Furthermore, it pertains to the thus obtained alkenyl-substituted cyclic anhydride and to its use as a paper additive.Type: ApplicationFiled: April 24, 2009Publication date: March 3, 2011Applicant: AKZO NOBEL N.V.Inventors: Aaldert Johannes De Jong, Martin Werner, Oliver Struck
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Publication number: 20110054111Abstract: The invention provides a tinter dosage unit comprising water borne tinter encapsulated in a water soluble pouch where the water activity of the tinter and the combined water activity and plasticizer activity of the pouch are such that the pouch remains intact in normal use.Type: ApplicationFiled: April 1, 2009Publication date: March 3, 2011Applicant: AKZO NOBEL COATINGS INTERNATIONAL B.V.Inventors: Fiona McLachlan, Martin W. Murray
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Patent number: 7897704Abstract: A protective crosslinkable coating composition comprising modified epoxy resin and crosslinker the modified epoxy resin being the reaction product, by weight, of i) from 80 to 99.9 parts of di-epoxy resin of epoxy equivalent weight from 500 to 5000 and formed from the reaction of bis phenol A diglycidyl ether and bis phenol A and ii) from 0.1 to 20 parts of reactive material characterised in that a) the di-epoxy resin contains minor amounts of resin components of molecular weight less than 1000 Daltons, and the reactive material comprises b) mono-functional organic material of molecular weight at: least 100 Daltons having one moiety capable of reacting with the epoxy moieties of the di-epoxy resin and c) dicarboxylic acid of molecular weight less than 300 Daltons having two moieties capable of reacting with the epoxy moieties of the di-epoxy resin.Type: GrantFiled: March 21, 2005Date of Patent: March 1, 2011Assignee: Akzo Nobel N.V.Inventors: Andre Masselin, Tung-Fai Lo, Pascal Helias, Francis Couaillet
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Publication number: 20110046025Abstract: Low molecular weight graft copolymer comprising a synthetic component formed from at least one or more olefinically unsaturated carboxylic acid monomers or salts thereof, and a natural component formed from a hydroxyl-containing natural moiety. The number average molecular weight of the graft copolymer is about 100,000 or less, and the weight percent of the natural component in the graft copolymer is about 50 wt % or greater based on total weight of the graft copolymer. Processes for preparing such graft copolymers are also disclosed.Type: ApplicationFiled: September 23, 2010Publication date: February 24, 2011Applicant: Akzo Nobel N.V.Inventors: Klin A. Rodrgues, Jannifer Sanders
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Publication number: 20110046328Abstract: The invention pertains to a process wherein initiators having a half-life from 0.0001 hour to 0.05 hour at the polymerization temperature are dosed to a polymerization mixture. The dosing of such initiator allows improved control of the polymerization rate and faster polymerization rates, and the process will render a polymer with very low residual initiator levels.Type: ApplicationFiled: October 25, 2010Publication date: February 24, 2011Applicant: AKZO NOBEL N.V.Inventors: Hans WESTMIJZE, Andreas Petrus Van Swieten, Lambertus Meulenbrugge, Koen Antoon Kornelis Vanduffel
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Publication number: 20110045313Abstract: A paper coating composition is provided, comprising a polyvinyl alcohol graft copolymer comprising at least one side-chain polymer, formed from at least one carboxylic acid containing monomer, grafted onto a polyvinyl alcohol; and a further component selected from the group consisting of binders, thickeners and combinations thereof. The graft copolymer unexpectedly provides superior viscosification and water retention compared to results using a blend of the PVOH and carboxylated polymer where the two polymers were formed in the absence of one another.Type: ApplicationFiled: April 28, 2009Publication date: February 24, 2011Applicant: AKZO NOBEL N.V.Inventors: Chistopher G. Gore, Milagros C. Barron
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Patent number: 7892398Abstract: The invention relates to an aqueous dispersion of cellulose-reactive sizing agent containing an acid anhydride, an anionic polyelectrolyte and a nitrogen-containing organic compound which is an amine or quaternary ammonium thereof having a molecular weight less than 180 and/or having one or more hydroxyl groups. The invention further relates to a process for the production of paper which comprises adding the aqueous dispersion of cellulose-reactive sizing agent to an aqueous cellulosic suspension.Type: GrantFiled: December 13, 2006Date of Patent: February 22, 2011Assignee: Akzo Nobel N.V.Inventors: Hans Johansson-Vestin, Jonas Liesén, Marie Turunen, Jan Emanuelsson
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Patent number: 7893114Abstract: The invention relates to a process for producing aqueous silica-based sols which comprises providing a cationic ion exchange resin having at least part of its ion exchange capacity in hydrogen form; bringing said ion exchange resin in contact with an aqueous alkali metal silicate to form an aqueous slurry; adjusting the pH of the aqueous slurry and separating the ion exchange resin from the aqueous slurry, as well as the silica-based sols obtained by the process; the invention also relates to silica-based sols obtained by the process, as well as a process for producing paper which comprises providing an aqueous suspension comprising cellulosic fibres; adding to the suspension one or more drainage and retention aids comprising a silica-based sol according to the invention; and dewatering the obtained suspension to provide a sheet or web of paper.Type: GrantFiled: June 2, 2010Date of Patent: February 22, 2011Assignee: Akzo Nobel N.V.Inventors: Glenn Mankin, Marek Tokarz, Freddie Hansson
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Publication number: 20110039984Abstract: The present invention pertains to a rheological additive to replace casein in minerally setting building material compounds, characterized in that the rheological additive contains at least two different dispersing agents and at least one stabilizer, or at least one dispersing agent and at least two different stabilizers, wherein said at least one dispersing agent is or said at least two dispersing agents are selected from the group of lignin sulfonate, polycarboxylate, polycarboxylate ether, melamine formaldehyde sulfonate, alkylphenol glycol ether and/or naphthaline sulfonates, and said at least one stabilizer is or said at least two stabilizers are selected from the group of modified or unmodified, fully or partially hydrolyzed polyvinyl alcohol, polyvinyl acetal, polyvinyl pyrrolidone, polyalkylene glycol, polyalkylene oxide, agar-agar, carob seed grain, pectin, poly(meth)acrylate and/or (meth)acrylate thickeners, poly(meth)acrylamides, polyurethanes, associative thickeners, gelatine and/or soy protein.Type: ApplicationFiled: April 10, 2009Publication date: February 17, 2011Applicant: AKZO NOBEL N.V.Inventors: Erwin Bühler, Hanspeter Waser
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Publication number: 20110040085Abstract: The invention relates to a dry or slurry process to prepare phosphate-crosslinked cellulose ethers from a cellulose starting material comprising the steps of adding an alkalizing agent to the cellulose starting material to achieve mercerization, adding an ethehfying agent to the reaction mixture to achieve etherification of the cellulose, and adding a crosslinking agent to the reaction mixture to achieve crosslinking of the cellulose, wherein at least part of the alkalizing agent is added to the cellulose starting material before the etherification and/or crosslinking reactions take place to obtain alkalized cellulose; the crosslinking agent and the etherifying agent are added one after the other in random order or simultaneously; the crosslinking agent is an alkali metal thmetaphosphate; and the crosslinking and etherification steps are performed at an elevated temperature.Type: ApplicationFiled: April 10, 2009Publication date: February 17, 2011Applicant: AKZO NOBEL N.V.Inventor: Paulus Pieter De Wit
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Publication number: 20110028371Abstract: Hybrid copolymers include a synthetic polymer which is derived from at least one anionic or non-anionic ethylenically unsaturated monomer and a naturally derived hydroxyl containing chain transfer agent as an end group. The hybrid copolymer may be prepared as a blend with a builder or a chelating agent. Hybrid copolymers also include a synthetic portion derived from at least one ester monomer and a naturally derived hydroxyl containing chain transfer agent as an end group. Ester graft copolymers include a naturally derived hydroxyl moiety backbone and side chains derived from at least one ester monomer. Further, a method of determining the concentration of a hybrid copolymer in an aqueous system and methods of preparing a hybrid copolymer are also included.Type: ApplicationFiled: July 31, 2009Publication date: February 3, 2011Applicant: AKZO NOBEL N.V.Inventors: Klin A. RODRIGUES, Allen M. Carrier, Jannifer Sanders
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Publication number: 20110020654Abstract: A light-permeable heat-protection element including at least one support element and at least one protective coating containing a reaction product which includes an aqueous alkali silicate solution and aluminate-modified or borate-modified silicon dioxide.Type: ApplicationFiled: February 26, 2009Publication date: January 27, 2011Applicants: VETROTECH SAINT-GOBAIN (INTERNATIONAL) AG, AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Norbert Schwankhaus, Udo Gelderie, Dietrich Pantke, Lothar Puppe, Hartmut Melzer, Peter-Nikolaus Schmitz
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Publication number: 20110017138Abstract: A device for applying paint, said device comprising a paint applicator (1) and a guiding means and being characterized in that said guiding means (23a, 23b) consists of two guiding rollers (23a, 23b), the axis of rotation of each roller being fixed in use such that the two axes are disposed at an angle to one another in the range from 50° to 130°. The device is particularly suitable for applying paint in a linear strip of predetermined width along architectural objects such as window sills and sashes, lintels and beams.Type: ApplicationFiled: January 6, 2009Publication date: January 27, 2011Applicant: AKZO NOBEL COATINGS INTERNATIONAL B.V.Inventors: Amerik Hoek, Lennox J. Alblas, Bernard J. Den Ouden