Abstract: The invention is directed to a method for increasing brightness of pulp, wherein the method includes: contacting a pulp slurry with chlorine dioxide in a final D (ClO2) bleaching stage; and adding a brightening additive to the final D bleaching stage after at least a portion of the chlorine dioxide has been consumed, in an amount sufficient to increase brightness of the pulp; wherein the brightening additive is an inorganic compound chosen from hypochlorous acid, one or more precursor compounds that form hypochlorous acid in said final D bleaching stage, or a mixture thereof.
Type:
Application
Filed:
December 19, 2011
Publication date:
October 17, 2013
Applicant:
Akzo Nobel Chemicals International B.V.
Inventors:
Douglas W. Reid, John Atwood, Scott Carmichael, Daniel Connell
Abstract: The present invention relates to the use of a product obtainable by the reaction of a fatty acid, or mixture of acids, having the formula R1COOH (I); and a dicarboxylic acid or a derivative thereof having the formula (IIa) or (IIb) with an alkoxylated fatty amine having the formula (III) or a partial or wholly quaternised derivative thereof; optionally said reaction between the fatty acid, the dicarboxylic acid and the alkoxylated fatty amine is being followed by a further reaction step wherein part or all of the nitrogen atoms are quaternised by reaction with an alkylating agent R5X; as a corrosion inhibitor for metal surfaces. The present invention also relates to such products and to methods for their production.
Type:
Application
Filed:
December 23, 2011
Publication date:
October 17, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Abstract: The present invention relates to a process to control iron in a subterranean formation wherein a fluid containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA) is introduced into the formation at a temperature between 77 and 400° F. (about 2 and 204° C.). The invention also covers a process of treating a subterranean formation wherein simultaneously iron control takes place.
Type:
Application
Filed:
December 14, 2011
Publication date:
October 17, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Inventors:
Hisham Nasr-El-Din, James N. Lepage, Cornelia Adriana De Wolf, Mohamed Ahmed Nasr-El-Din Mahmoud, Ahmed Issam Elsayed Salama Assem
Abstract: Various embodiments of radiation curable coating compositions are provided. In one embodiment, a radiation curable coating composition includes a (meth)acrylate functional compound and an adhesion promoting (meth)acrylate compound. The radiation curable coating composition can also include a (meth)acrylate functional compound, a poly(meth)acrylate and a reactive diluent. The (meth)acrylate functional compound can be made from the reaction of a multifunctional isocyanate, a polyol and a hydroxyl functional (meth)acrylate in the presence of a catalyst.
Type:
Application
Filed:
December 23, 2011
Publication date:
October 17, 2013
Applicant:
AKZO NOBEL COATINGS INTERNATIONAL B.V.
Inventors:
Gary Pierce Craun, Kenneth James Gardner, Patricia Miller
Abstract: The present invention generally relates to controlling the viscosity of water-based mud systems. More particularly, the present invention relates to methods and compositions for thinning and deflocculating aqueous based fluids used in well drilling and other well operations in subterranean formations, especially subterranean formations containing oil and/or gas. The invention also relates to a drilling fluid thinner and/or dispersant having improved temperature stability, dispersing properties and “solids contamination” tolerance.
Type:
Application
Filed:
December 16, 2011
Publication date:
October 17, 2013
Applicant:
Akzo Nobel Chemicals International B.V.
Inventors:
Stuart Holt, Klin Aloysius Rodrigues, Jannifer Sanders
Abstract: The present invention relates to a process for treating a sandstone formation comprising introducing a fluid containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and having a pH of between 1 and 14 into the formation. The invention in addition relates to a fluid and a kit of parts suitable for use in the above process containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA), a corrosion inhibitor, a surfactant, and optionally a mutual solvent.
Type:
Application
Filed:
December 14, 2011
Publication date:
October 17, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Inventors:
Hisham Nasr-El-Din, Cornelia Adriana De Wolf, Mohamed Ahmed Nasr-El-Din Mahmoud, Albertus Jacobus Maria Bouwman, Noble Thekkemelathethil George
Abstract: The present invention relates to a process for producing paper which comprises: providing an aqueous suspension comprising cellulosic fibres, adding to the suspension, after all points of high shear, a cationic polysaccharide; an inorganic polymer P1 being a cationic polyaluminium compound; and a polymer P2 being an anionic polymer; and, dewatering the obtained suspension to form paper.
Type:
Application
Filed:
September 6, 2012
Publication date:
October 17, 2013
Applicant:
AKZO NOBEL N.V.
Inventors:
Fredrik Solhage, Joakim Carlén, Birgitta Johansson
Abstract: A powder composition including a resin and from 5% to 70%, by weight based on powder composition weight, of a corrosion-inhibiting pigment, optionally including from 0% to 65%, by weight based on powder composition weight, zinc, the composition being substantially free from pigment providing a metallic effect is provided. The corrosion-inhibiting pigment may be present in amounts of up to 50%, by weight based on powder composition weight, for example, up to 35%. A method for coating a substrate with the powder composition and the coated substrate so formed are also provided.
Type:
Application
Filed:
May 29, 2013
Publication date:
October 17, 2013
Applicant:
Akzo Nobel Coatings International B.V.
Inventors:
Jason Paul Breidenstein, Douglas S. Cinoman, Paul R. Horinka, Edward G. Nicholl
Abstract: The present invention provides a mono coating film type waterborne coating composition comprising halogen free polyolefin resin, acryl polyol, acryl emulsion, and a solvent. According to the present invention, adhesion to a polyolefin substrate is excellent, and physical/chemical properties may be maintained with a single coating film instead of the currently used dual coating films, by a halogen free waterborne composition with physical/chemical properties similar to or more excellent than the existing oil coating or halogen-containing coating composition. Since these effects may be sufficiently obtained with a single coating film, consumption of coating may be reduced about 30-40% compared to the existing method, and particularly, cost reduction may be expected through decrease in equipment required for dual coating film, energy for drying coating film, attractive force of coating, productivity increase, and the like.
Type:
Application
Filed:
December 23, 2011
Publication date:
October 17, 2013
Applicant:
AKZO NOBEL COATINGS INTERNATIONAL B.V.
Inventors:
Chai-Ki Lee, Young Tae Park, Peng Sam Park
Abstract: The present invention relates to a process for the catalytic halogenation of an organic compound comprising at least one vicinal diol moiety, said process comprising a step of bringing the organic compound comprising at least one vicinal diol moiety into contact with a hydrogen halide in the presence of a catalyst, characterized in that the catalyst is an organic compound comprising a ?-diketone moiety or a ?-keto aldehyde moiety.
Type:
Grant
Filed:
March 17, 2010
Date of Patent:
October 15, 2013
Assignee:
Akzo Nobel N.V.
Inventors:
Antoon Jacob Berend Ten Kate, Richard Herman Woudenberg, Eilertdina Henderika Renkema, Luc Louis Theophile Vertommen, Carolina Anna Maria Christina Dirix, Tim Baks
Abstract: A retransfer intermediate sheet for receiving an image to be printed onto an article by thermal retrasfer comprises a substrate which is preferably heat-deformable; and an image-receiving coating on one side of the substrate, comprising an image-receiving layer for receiving an image by printing, preferably inkjet printing, of dye-containing ink, the image-receiving layer comprising amorphous porous silica, a first, non-dye absorbing polymeric binder and a second, flexible polymeric binder. The sheet is particularly useful for printing on three dimensional articles, e.g. being heated and vacuum formed to conform to an article. The invention also coven a method of printing and an article bearing a printed image.
Type:
Grant
Filed:
January 8, 2007
Date of Patent:
October 15, 2013
Assignee:
Akzo Nobel Coatings International B.V.
Inventors:
Richard Anthony Hann, Ian Stephenson, Anthony Joseph Martino, Nicholas Clement Beck
Abstract: The present invention relates to a process for treating a sandstone formation comprising introducing a fluid containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA) and having a pH of between 1 and 14 into the formation. The invention in addition relates to a fluid suitable for use in the above process containing 5-30 wt % of glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA), a corrosion inhibitor, a surfactant, and a mutual solvent.
Type:
Application
Filed:
December 14, 2011
Publication date:
October 10, 2013
Applicant:
Akzo Nobel Inc.
Inventors:
Cornelia Adriana De Wolf, Mohamed Ahmed Nasr-El-Din Mahmoud, Hisham Nasr-El-Din
Abstract: The present invention covers a fluid and kit of parts suitable for treating carbonate formations containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA), a corrosion inhibitor, and a surfactant, and the use thereof.
Type:
Application
Filed:
December 16, 2011
Publication date:
October 10, 2013
Applicant:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Inventors:
Cornelia Adriana De Wolf, Hisham Nasr-El-Din, Mohamed Ahmed Nasr-El-Din Mahmoud, James N. Lepage, Johanna Hendrika Bemelaar, Albertus Jacobus Maria Bouwman, Guanqun Wang
Abstract: Personal care compositions, methods for making and uses thereof include an aqueous viscoelastic composition and a personal care active ingredient. The viscoelastic composition includes at least one surfactant and at least one hydrophobically-modified polymers with low molecular weights.
Type:
Application
Filed:
December 15, 2011
Publication date:
October 10, 2013
Applicant:
Akzo Nobel Chemicals International B.V.
Inventors:
Qingwen Wendy Yuan-Huffman, Klin A. Rodrigues, Jian Zhou, Stuart Peter Robert Holt, Elliot Isaac Band, JR., Samuel Anthony Vona
Abstract: The invention concerns an aqueous starch-containing polymer dispersion obtainable by co-polymerisation of ethylenically unsaturated monomers comprising: (a) from 20 to 50 wt % of at least one of styrene or substituted styrene; (b) from 20 to 60 wt % t-butyl (meth)acrylate; and, (c) from 0 to 20 wt % of at least one ethylenically unsaturated co-polymerisable monomer being different from (a) and (b), in the presence of (d) from 10 to 50 wt % cationic starch, wherein the sum of (a)+(b)+(c)+(d) is 100%. The invention further concerns preparation and use thereof.
Type:
Application
Filed:
December 12, 2011
Publication date:
October 10, 2013
Applicant:
Akzo Nobel Chemicals International B.V.
Abstract: The present invention relates to an aqueous composition comprising three components. The first component is a primary detergent, non-ionic surfactant with a critical packing parameters (CPP) of ?0.95. The second component is a inorganic particle whose surface has been modified to improve stability. The third necessary component is a secondary surfactant with a CPP of ?0.85. The secondary surfactant can function to improve the overall cleaning performance, the streaking performance and provide overall formulation stability.
Type:
Application
Filed:
December 13, 2011
Publication date:
October 10, 2013
Applicant:
Akzo Nobel Chemicals International B.V.
Inventors:
Julia Mary Wates, Maurice O. Dery, Alberto Slikta, Boen Ho O
Abstract: The invention relates to a process for the production of an amino acid having at least one secondary or tertiary amino group and three or more carboxyl groups or its salt with less than an equivalent of alkaline metal based on the number of carboxyl groups, said process comprising reducing alkali metal ions from an aqueous solution of an alkali metal salt of an amino acid having at least one secondary or tertiary amino group and three or more carboxyl groups and acidifying the amino carboxylate starting material by first performing a chemical acidification step using an organic or inorganic acid to get a compound in which at least one of the groups is protonated, and in a subsequent step further acidifying the amino carboxylate starting material and reducing alkali metal ions from an aqueous solution of the partially acidified alkali metal salt of the amino acid having at least one secondary or tertiary amino group and three or more carboxyl groups by electrodialysis, wherein the electrodialysis is performed
Abstract: The invention relates to additives enhancing the activity of certain insecticides, to significantly increase the effect of such insecticides when applied to the exterior foliage of a plant, thus increasing the kill rate of feeding insects that are normally protected deep within other tissue structures of the plant.
Type:
Application
Filed:
December 9, 2011
Publication date:
October 3, 2013
Applicant:
Akzo Nobel Chemicals International B.V.
Abstract: The present invention relates to the use of acrylate copolymers, which provide excellent water resistance to personal care products without the undesirable waxy, greasy or heavy feel. Further, these acrylate copolymers are easy for manufacturers to use as they can be easily incorporated into the water phase without special processing.
Type:
Grant
Filed:
November 26, 2003
Date of Patent:
October 1, 2013
Assignee:
Akzo Nobel N.V.
Inventors:
Hongjie Cao, Gary T. Martino, Samuel A. Vona, Jr.
Abstract: The present invention is directed to heat treated xanthan gums, which have improved solution viscosity over other xanthan gums heat-treated under the same processing conditions while maintaining the improved ease of use and the short, non-stringy gel texture of heat treated xanthan gums. Such high solution viscosity xanthan gums are suitable in a variety of applications, including cosmetic and personal care compositions.