Abstract: The present invention relates to a method of treating polyaluminium compounds comprising contacting at least one polyaluminium compound in an aqueous solution with an anion exchange material capable of accepting anions or anionic groups and donating hydroxyl ions for a time necessary to obtain a polyaluminium compound having a higher molar ratio of hydroxide to aluminium than the polyaluminium compound had before contacting it with the anion exchange material.
Abstract: The present invention relates to a process for preparing an aqueous polymer dispersion comprising: preparing a dispersant co-polymer of a monomer mixture (M) by polymerising the monomer mixture (M) in a reaction medium which is substantially free from organic solvents and/or substantially free from monomers which are not soluble in water, the monomer mixture (M) comprises at least one cationic vinyl monomer (m3) and at least one monomer (m4) which is tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate, or a monomer of the general formula (I): wherein R1 is hydrogen or methyl, R2 is hydrogen or C1-C2 alkyl, R3 is hydrogen, C1-C4 alkyl, phenyl, or benzyl, n=1 to 4, and x=1 to 50, and then, polymerising one or more water-soluble monomers (m) in an aqueous solution of a salt in the presence of the obtained dispersant polymer. The invention also relates to an aqueous polymer dispersion, use of the dispersion and a process for the production of paper.
Type:
Application
Filed:
June 12, 2006
Publication date:
October 12, 2006
Applicant:
Akzo Nobel N.V.
Inventors:
Oliver Struck, Christian Przybyla, Achim Sieger, Mathias Hahn, Dirk Ruppelt, Werner Jaeger
Abstract: The invention provides a method for the preparation of enantiomerically pure mirtazapine, said method comprising a step of ring closure of a compound of formula (II) wherein X is a leaving group, said step comprising treatment with an acid, whereby mirlazapine with enantiomeric excess is formed by the ring closure of the compound of formula (II) with enantiomeric excess by treatment with a suitable acid in the absence of a solvent or a suitable combination of an acid and an organic solvent.
Type:
Application
Filed:
July 5, 2004
Publication date:
October 12, 2006
Applicant:
AKZO NOBEL N.V.
Inventors:
Johannes Wieringa, Adrianus Antonius Van De Ven, Gerardus Kemperman
Abstract: The invention relates to a method of reducing emission of an aldehyde from a wood based product comprising applying at least one surface of a layer with one or more polymers containing a primary amine group. The invention further relates to a wood based product.
Abstract: The present invention relates to an aqueous quick-setting bitumen-aggregate mix suitable for cold pavement of roads, parking places, sidewalks and the like. The bitumen-aggregate mix is manufactured by mixing a mineral aggregate, water, a de-emulsifier, containing hydraulic cement, and a cationic oil-in-water bitumen emulsion, containing, as an emulsifier, a salt of a tertiary diamine and a phosphoric acid. The diamine has the formula (I), where one or two of the groups R1, R2, R4 and R5 designate a hydrocarbon group of 6-22, preferably 8-20 carbon atoms, and the remaining R1, R2, R4 and R5 groups are an alkyl group with 1-4 carbon atoms, and/or a group -(A)2H, where A is an alkyleneoxy group with 2-3 carbon atoms, and s is a number from 1-4, R3 is an alkylene group with 2-4 carbon atoms and n is a number from 0-2.
Type:
Application
Filed:
June 23, 2004
Publication date:
October 5, 2006
Applicant:
AKZO NOBEL N.V.
Inventors:
Bengt-Arne Thorstensson, Keith Shaw, Thomas Wallin, Leif-Göran Stahlgren
Abstract: Coating composition comprising a liquid first phase comprising one or more polymer binder components having functional groups capable of cross-linking by electron pair exchange, and a second phase which is a powder material, such as sand, comprising one or more compounds capable of activating crosslinking of the binder components in the liquid phase after the second phase is exposed to the first phase. The activating compound in the second phase may include a Lewis acid or Lewis base. Alternatively, the liquid phase comprises a compound which is reactive with the activating compound in the powder phase to form a Lewis base or Lewis acid. Method of applying a coating composition curable by cross-linking chemistry based on electron pair exchange, wherein after application of a layer of the coating composition on a substrate, a powder material comprising one or more cross-linking activating compounds is sprinkled over the wet layer.
Abstract: A Ccomposition comprising one or more metal hydroxy salts and a matrix, binder or carrier material, wherein the metal hydroxy salt is a compound comprising (a) as metal either (i) one or more divalent metals, at least one of them being selected from the group consisting of Ni, Co, Ca, Zn, Mg, Fe, and Mn, or (ii) one or more trivalent metal(s), (b) framework hydroxide, and (c) a replaceable anion. This composition has various catalytic applications.
Type:
Application
Filed:
February 10, 2004
Publication date:
September 28, 2006
Applicant:
AKZO NOBEL N.V.
Inventors:
William Jones, Paul O'Connor, Dennis Stamires
Abstract: The invention relates to a needle-less injector having a housing comprising: a chamber defined within said injector for containing liquid to be injected; a liquid outlet for said chamber positioned at the front end of the injector, a dispensing member in contact with the liquid in said chamber and movable in a first direction to reduce the volume of said chamber to cause the liquid contained therein to be expelled through said liquid outlet; drive means for actuating said injector, wherein the dispensing member is a spring-loaded piston movable in said chamber by the spring in the first direction to a preferred position at which the volume of said chamber is at a minimum and the spring is nearly unloaded, and which piston is movable in a second direction opposite to the first direction by actuation of the drive means whilst counteracting a force from the spring and moving the piston to a non-preferred position at which the spring is loaded.
Type:
Application
Filed:
June 5, 2003
Publication date:
September 28, 2006
Applicant:
AKZO NOBEL N.V.
Inventors:
Antonie Meijering, Andreas Johannes Jacobs
Abstract: The invention pertains to a process wherein initiators and protective colloids are both metered to a polymerization mixture. This manner of metering allows for improved control of the polymerization rate and an improved reactor space-time yield, and the process will render a polymer with a relatively high porosity.
Type:
Grant
Filed:
April 10, 2003
Date of Patent:
September 19, 2006
Assignee:
Akzo Nobel N.V.
Inventors:
Hans Westmijze, Koen Antoon Kornelis Vanduffel, Lambertus Meulenbrugge, Andreas Petrus Van Swieten
Abstract: An overbased alkaline earth metal organic complex of a carboxylic acid is formed by the reaction of a basic alkaline earth metal compound, and alcohol and/or glycol, a carboxylic acid, and carbon dioxide, wherein the carboxylic acid is a non-fatty alkyl group-containing carboxylic acid, such as one containing an alkyl group of up to eight carbon atoms and/or one containing an alkyl-substituted or unsubstituted aromatic group.
Abstract: The present invention generally relates to a process for the skeletal isomerization of unsaturated linear fatty acids and/or alkyl esters thereof to their branched counterparts. Said skeletal isomerization process comprises contacting said unsaturated linear fatty acids and/or alkyl esters thereof with at least one metal ion exchanged solid material catalyst. The present invention also relates to a process for the preparation of branched fatty acids and/or alkyl esters thereof from their straight chain counterparts. Finally, the invention also relates to various derivatives prepared from the branched fatty acids and/or alkyl esters prepared in accordance with the present invention.
Abstract: During the production of recombinant proteins from gram negative bacteria, lipopolysaccharides (LPS, endotoxin) are released along with the protein of interest. In many instances, LPS will copurify with the target protein due to specific or non-specific protein-ILPS interactions. We have investigated the ability of alkanediols to effect the separation of LPS from protein-LPS complexes while the complexes are immobilized on anion or cation exchange chromatographic media. Alkanediols provide a safer alternative to the use of other organics such as alcohols or acetonitrile due to their lower toxicity and decreased flammability. In addition, they are less costly than many of the detergents that have been used for such purposes. LPS removal efficiency increased with increasing alkane chain length. 1,2-alkanediols were more effective than terminal alkanediols in the separation of LPS from protein LPS complexes.
Abstract: The present invention relates to a antisolvent solidification process wherein a liquid medium comprising at least one organic or inorganic compound which is to be solidified is forced through a membrane into one or more antisolvents, or wherein one or more antisolvents are forced through a membrane into a liquid medium comprising at least one organic or inorganic compound which is to be solidified, yielding a composition comprising solid particles comprising said organic and/or inorganic compound(s).
Type:
Application
Filed:
April 28, 2004
Publication date:
August 17, 2006
Applicant:
Akzo Nobel N.V.
Inventors:
Wridzer Bakker, Robert Geertman, Marianne Reedijk, Jozef Baltussen, Gerrald Bargeman, Cornelis Van Lare
Abstract: The present invention relates to nucleic acid sequences encoding novel Babesia canis associated proteins and to cDNA fragments, recombinant DNA molecules and live recombinant carriers comprising these sequences. Furthermore, the invention relates to host cells comprising such nucleic acid sequences, cDNA fragments, recombinant DNA molecules and live recombinant carriers. Also, the invention relates to proteins encoded by these nucleotide sequences, to vaccines for combating Babesia canis infections comprising these proteins or genetic material encoding these proteins and methods for the preparation of vaccines. Another embodiment of the invention relates to these Babesia canis associated proteins for use in vaccines and to the use of the Babesia canis associated proteins in the manufacture of vaccines.
Type:
Grant
Filed:
February 28, 2002
Date of Patent:
August 15, 2006
Assignee:
Akzo Nobel N.V.
Inventors:
Theodorus Petrus Maria Schetters, Bernard Pierre Dominique Carcy, Pascal Robert Drakulovski
Abstract: The present invention provides a new antigenic type of chicken anaemia viruses (CAV). The CAV according to this invention is isolatable from turkeys in the field and its virulence for chickens is significantly reduced. This property makes these viruses particularly suited for preparing a live vaccine for protecting poultry against disease conditions resulting from CAV infection.
Type:
Grant
Filed:
February 3, 2004
Date of Patent:
August 15, 2006
Assignee:
Akzo Nobel N.V.
Inventors:
Carla Christina Schrier, Henricus Johannes Maria Jagt
Abstract: The present invention provides a new antigenic type of chicken anaemia viruses (CAV). The CAV according to this invention is isolatable from turkeys in the field and its virulence for chickens is significantly reduced. This property makes these viruses particularly suited for preparing a live vaccine for protecting poultry against disease conditions resulting from CAV infection.
Type:
Grant
Filed:
February 3, 2004
Date of Patent:
August 15, 2006
Assignee:
Akzo Nobel N.V.
Inventors:
Carla Christina Schrier, Henricus Johannes Maria Jagt
Abstract: The present invention relates to a process for preparing an aqueous polymer dispersion comprising: preparing a dispersant co-polymer of a monomer mixture (M) by polymerising the monomer mixture (M) in a reaction medium which is substantially free from organic solvents and/or substantially free from monomers which are not soluble in water, the monomer mixture (M) comprises at least one cationic vinyl monomer (m3) and at least one monomer (m4) which is tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate, or a monomer of the general formula (I): wherein R1 is hydrogen or methyl, R2 is hydrogen or C1–C2 alkyl, R3 is hydrogen, C1–C4 alkyl, phenyl, or benzyl, n=1 to 4, and x=1 to 50, and then, polymerising one or more water-soluble monomers (m) in an aqueous solution of a salt in the presence of the obtained dispersant polymer. The invention also relates to an aqueous polymer dispersion, use of the dispersion and a process for the production of paper.
Type:
Grant
Filed:
May 7, 2003
Date of Patent:
August 15, 2006
Assignee:
Akzo Nobel N.V.
Inventors:
Oliver Struck, Christian Przybyla, Achim Sieger, Mathias Hahn, Dirk Ruppelt, Werner Jaeger
Abstract: The invention relates to a process to make and use specific diacyl peroxides in polymerization reactions. The peroxides are produced and used in a polymerization process within a short timeframe in order to overcome stability issues associated with them.
Type:
Grant
Filed:
February 20, 2003
Date of Patent:
August 8, 2006
Assignee:
Akzo Nobel N.V.
Inventors:
Marinus Catharinus Tammer, Johannes Jacobus Theodorus De Jong, Johannes Willibrordus Antonius Overkamp
Abstract: A stabilizer composition, for use in polyvinyl chloride formulations, that is a mixture of: at least one organotin sulfide; at least one organotin chloride; and at least one free mercaptan.
Abstract: The present invention relates to a process for preparing fatty acids derived from oils and/pr fats with a phosphorus content below 200 ppm in good yield and with good colour and colour stability, which process comprises the steps of (A) hydrolytic splitting of degummed oils and/or fats, (B) at least one thermal pre-treatment of a composition comprising crude fatty acids, and (C) high vacuum distillation of the thermally pre-treated composition comprising crude fatty acids.
Type:
Application
Filed:
July 5, 2004
Publication date:
July 27, 2006
Applicant:
AKZO Nobel N.V.
Inventors:
Franz-Josef Te Baay, Holger Riemensperger, Ingo Mensink