Abstract: The present invention pertains to a process for the preparation of aqueous dispersions which are stabilized with a water-insoluble stabilizing colloid, characterized in that a) in a first step a water-insoluble stabilizing colloid is prepared, with this being prepared, based on the amount of monomer used for the preparation of the stabilizing colloid, by means of radical polymerization, followed by b) the addition of at least one further olefinically unsaturated monomer and at least one initiator, in which process by means of radical polymerization of the further olefinically unsaturated monomer an aqueous dispersion is obtained, on which c) optionally a residual monomer reduction is performed, with this being carried out by means of polymerization of residual monomers and/or by means of physical removal of the residual monomers and optionally further volatile organic components by means of the introduction of vapor and/or gas.
Type:
Grant
Filed:
November 15, 2007
Date of Patent:
July 30, 2013
Assignee:
Akzo Nobel N.V.
Inventors:
Hongli Willimann, Jakob Wolfisberg, Ulf Kehrer
Abstract: The invention generally relates to a synergistic co-spray dried blend of (alkyl) naphthalene formaldehyde condensate sulfonates and lignosulfonates. This co-spray dried blend is useful as a dispersant in useful in agrochemical formulations.
Abstract: The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.
Abstract: The present invention generally relates to a low residue hydraulic fracturing fluid which comprises an aqueous fluid and at least one polymeric gelling agent, wherein said polymeric gelling agent comprises at least one crosslinked, modified starch. The invention also relates to a method of fracturing a subterranean formation through the use of the aforementioned fracturing fluid.
Type:
Application
Filed:
October 4, 2011
Publication date:
July 25, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Inventors:
Hua Yu, Jian Zhou, Daniel Bernard Solarek, Dale Stanley Steichen
Abstract: The present invention pertains to a water-redispersible polymer powder based on at least one modified natural latex. The modified natural latex can be obtained by mixing natural latex with at least one radical initiator and/or oxidizing agent, by mixing and reacting natural latex with at least one olefinically unsaturated monomer and with at least one radical initiator, and/or by mixing natural latex with at least one filler. Preferably, the polymer powder contains up to about 95 wt. % of least one natural latex, about 0 to 50 wt. % of at least one protective colloid, about 2 to 70 wt. % of at least one filler and/or anti-caking agent, as well as optionally further additives. In addition, the invention pertains to a process for the preparation of the polymer powder, the use thereof as an additive in building material compositions, as well as building material compositions containing the polymer powder.
Type:
Grant
Filed:
June 25, 2009
Date of Patent:
July 23, 2013
Assignee:
Akzo Nobel N.V.
Inventors:
Hongli Willimann, Hans Wicki, Urs Heini, Alexander Zapf, Robert Koelliker
Abstract: A composition comprising 40 to 90 wt % of at least one fatty amine carboxylate salt, water, and the carboxylic acid corresponding to said carboxylate is provided. In the composition, the weight:weight ratio of carboxylic acid:water is in the range of from 20:1 to 1:1. The inventive compositions have a pour point at a temperature of below 30° C.
Abstract: The present invention relates to a water-soluble associative cellulose ether having a DP viscosity from 250 to 20,000 mPa·s, measured at a concentration of 1% by weight, and a molecular substitution, MS, from 0.0001 to 0.005 of a hydrophobic substituent containing an unsubstituted or substituted hydrocarbon group of 8-24 carbon atoms. The cellulose ether has a good thickening effect and advantageous application properties at low contents and can be used in an aqueous decorative paint composition, an aqueous paper coating composition, an aqueous organic filler composition, an aqueous cement slurry, an aqueous detergent composition or an aqueous personal care formulation.
Abstract: 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:
Application
Filed:
February 25, 2013
Publication date:
July 4, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Abstract: The present invention relates to the use of a polyesteramine or a polyester polyquaternary ammonium compound as a corrosion inhibitor for metal surfaces, and to a method for protecting a metal surface from corrosion by contacting the metal surface with said corrosion inhibitor.
Abstract: Polymerization process comprising the steps of: (a) reacting an aqueous suspension comprising initiator, vinyl chloride, and optionally one or more co-monomers in a continuous stirred tank reactor; and (b) further reacting the resulting suspension in at least one second reactor; wherein the conversion level of vinyl chloride in the continuous stirred tank reactor of step (a) is from 10 to 60 wt %.
Type:
Grant
Filed:
March 20, 2007
Date of Patent:
June 18, 2013
Assignee:
Akzo Nobel N.V.
Inventors:
Carolina Anna Maria Christina Dirix, Johannes Jacobus Theodorus De Jong, Lambertus Meulenbrugge, Koen Antoon Kornelis Vanduffel
Abstract: The present invention relates to isolated bioactive compositions containing bioactive fractions derived from Theacea plants. The present invention also relates to bioactive topical formulations containing the bioactive compositions. The present invention further relates to methods of using the bioactive compositions of the present invention, including, for example, methods for inhibiting inflammatory activity in skin tissue of a mammal, for protecting skin tissue of a mammal from ultraviolet light-induced damage, and for normalizing skin disorders in skin tissue of a mammal. The present invention also relates to methods for isolating bioactive fractions derived from cell juice or a cell walls component a Theacea plant.
Abstract: Embodiments of the invention relate to the determination of the colour of a colour sample from an image of the colour sample. In one embodiment a colour sample capture card is provided having printed thereon colour samples of known colour (for example, XYZ tri-stimulus values). An image of the test colour sample is then captured using domestically available equipment, such as a consumer digital camera or camera-equipped mobile telephone, the image also containing the colour sample capture card. In one embodiment the image is then transmitted to a remote colour determination service for colour sample colour determination. Regression analysis is then performed using the RGB colour samples in the image and known XYZ colours thereof to characterise the colour capture response of the image capture device. Having characterised the image capture device the XYZ colour of the unknown colour sample can be determined from the RGB colour thereof in the image.
Type:
Application
Filed:
January 17, 2011
Publication date:
June 13, 2013
Applicant:
AKZO NOBEL COATINGS INTERNATIONAL B.V.
Inventors:
Benjamin Buchanan Lings, Paul James Harrop, Peter Mark Spiers, Steward Longhurst
Abstract: The invention relates to an aqueous dispersion and dispersion powder composition for highly flexible, waterproof, hydraulically binding tile adhesives having an extended open time, and containing an emulsion polymer (A) having a glass transition temperature (Tg) of approximately 10° C. to 80° C., and an emulsion polymer (B) having a glass transition temperature (Tg) of approximately ?60° C. to +20° C. The difference of the glass transition temperatures (Tg) of the emulsion polymers (A and B) is at least approximately 5° C. The proportion of vinyl acetate monomer units is 0 to 70 mol-% and the minimum film forming temperature according to DIN 53787 of the 50% aqueous dispersion composition is approximately 15° C. or less, and the monomers, stabilization systems and optionally the additional additives of the dispersion and/or dispersion powder composition are selected such that a good cement compatibility is guaranteed.
Type:
Grant
Filed:
March 13, 2006
Date of Patent:
June 11, 2013
Assignee:
Akzo Nobel N.V.
Inventors:
Hongli Willimann, Hans Wicki, Ulf Kehrer
Abstract: Anionic graft copolymers and scale inhibition compositions including the anionic graft copolymers in which the anionic graft copolymers include a natural component grafted with an ethylenically unsaturated anionic monomer where the anionic graft copolymer includes 1 or more reacted anhydroglucose units per every 100 anhydroglucose units in the anionic graft copolymer.
Type:
Application
Filed:
July 30, 2010
Publication date:
May 30, 2013
Applicant:
AKZO NOBEL N.V.
Inventors:
Klein A. Rodrigues, Matthew M. Vanderhoof, John Ozbek
Abstract: Embodiments of the invention relate to the determination of the colour of a colour sample from an image of the colour sample. In one embodiment a colour sample capture card is provided having printed thereon colour samples of known colour (for example, XYZ tri-stimulus values). An image of the test colour sample is then captured using domestically available equipment, such as a consumer digital camera or camera-equipped mobile telephone, the image also containing the colour sample capture card. In one embodiment the image is then transmitted to a remote colour determination service for colour sample colour determination. Regression analysis is then performed using the RGB colour samples in the image and known XYZ colours thereof to characterise the colour capture response of the image capture device. Having characterised the image capture device the XYZ colour of the unknown colour sample can be determined from the RGB colour thereof in the image.
Type:
Application
Filed:
January 17, 2011
Publication date:
May 30, 2013
Applicant:
AKZO NOBEL COATINGS INTERNATIONAL B.V.
Inventors:
Benjamin Buchanan Lings, Paul James Harrop, Peter Mark Spiers, Steward Longhurst
Abstract: The present invention relates to a process of producing a cellulosic product comprising (i) providing an aqueous suspension of cellulosic fibers, (ii) adding microfibrillar polysaccharide, (iii) adding thermoplastic microspheres, (iv) dewatering the suspension and forming a cellulosic product. The invention also relates to a process of producing a single layer cellulosic product comprising (i) providing an aqueous suspension of cellulosic fibers, (ii) adding microfibrillar polysaccharide derived from softwood and/or hardwood and optionally adding thermoplastic microspheres to the suspension, (iii) dewatering the suspension and forming a cellulosic product. The invention further relates to a cellulosic product obtainable from said processes. The invention also relates to a composition comprising microfibrillar polysaccharide and thermoplastic microspheres and the use thereof.
Abstract: A process to physically deter fouling from a substrate in an aquatic fouling environment, which process comprises forming on the substrate, before exposure to the said environment, a coating composition comprising (i) a curable polyorganosiloxane polyoxyalkylene block copolymer having at least two reactive groups X situated on the copolymer chain and (ii) an organosilicon crosslinking agent and/or a catalyst.
Type:
Grant
Filed:
April 28, 2008
Date of Patent:
May 28, 2013
Assignee:
Akzo Nobel Coatings International B.V.
Inventors:
David Neil Williams, David Anthony Stark, Adrian James Lee, Cait Marie Davies
Abstract: The present invention relates to process to prepare a polymer by an aqueous emulsion or suspension polymerisation process wherein a monomer mixture is polymerised in the presence of a free radical initiator and a stabiliser, to the emulsion and redispersible polymer powder obtainable therewith, and to the use of this emulsion and powder in a building material composition, in particular to hydrophobise the building material composition, wherein the monomer mixture comprises (i) 0.5-80 wt. % of biomonomers containing an ester of a polyol and at least one fatty acid, the polyol having 2 to 10 hydroxy groups, and at least one vinyl group; (ii) 20-99.5 wt.
Type:
Application
Filed:
May 9, 2011
Publication date:
May 23, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Abstract: The present invention provides a formulation comprising a pesticide and/or a plant growth regulator; an acyl morpholine of the formula (I) where R is H, CH3 or C2H5; and a polar aprotic co-solvent different from an acyl morpholine of formula (I). The formulation can be used in treatment of plants, and is especially well suited for use as a soluble liquid formulation.
Type:
Application
Filed:
May 24, 2011
Publication date:
May 23, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Abstract: An aqueous liquid colorant composition having a volatile organic content up to 50 g/l and suitable for colouring aqueous or solventborne architectural coatings and basepaints comprising based on the total weight of the composition, i) from 0 to 26% of non-volatile organic liquid having a vapour pressure up to 1.3 N/m2 at 25° C. ii) from 2 to 13% of stabilising agent iii) from 4 to 77% of colour pigment iv) from 0 to 8% of rheology modifying clay v) from 0 to 20% of extender wherein the ratio of the combined weight of iii)+iv)+v): the combined weight of i)+ii) is from 0.8 to 2.75:1 and the combined weight of the non-volatile organic liquid i) and the stabilising agent ii) is no greater than 24% and the combined weight of the rheology modifying clay iv) and the extender v) is at least 2% when the amount of colour pigment is less than 51%.
Type:
Application
Filed:
May 30, 2011
Publication date:
May 23, 2013
Applicant:
Akzo Nobel Coatings International B.V.
Inventors:
Fiona McLachlan, Paul John Christopher Sasada, Alban Elroy Richardson