Basf Se Corporation

Ghent University

Matthias Maier

Clemens Auschra

Huiguang Kou

Frank O Pirrung

Steffen Onclin

Bernd Reck

Volodymyr Boyko

Michael Baecker

Robert Reichardt

Joost Leswin

Dario Perera-Diez

Isabel Van Driessche

Jules Mikhael

Frank Pirrung

Maximilian Hemgesberg

Till Gruendling

Denis Schwall

Immanuel Willerich

Katrien De Keukeleere

Jonathan De Roo

Ron Feenstra

Hens Zeger

Tanja Rost

Markus Rueckel

Thorsten Martin Staudt

Jan Bennewitz

Hannes Rijckaert

Sonja Gesine Gabriel

Tim Meisenzahl

Thorsten Staudt

The presently claimed invention relates to a composition comprising polyurethane polymer and diluents, which is used as an additive in coating formulations, in particular water-borne paint and coating formulations, for reducing the effect of the viscosity loss caused by the addition of colorants/pigment pastes thereby improving the viscosity stability in tinted coating formulations as well as the method for preparing the composition.

Polymeric additives for reducing the viscosity loss on tinting

The present invention relates to a dispersant composition comprising: a) at least one oligomeric acid A, which has i) at least one acidic group selected from COOH and POH, and ii) at least one polyoxyalkylene-ether radical of the formula (I): R&#x2014;(O-A)O-G-, where A is an C-C-alkan-1,2-diyl radical; X is an integer having a number average value in the range from 2 to 20; and R is hydrocarbon radical having from 1 to 30 carbon atoms; G is a chemical bond or a carbonyl group; and b) at least one polyamine B, which is selected from the group consisting of polyvinylamines, poly-C-C-alkyleneimines, modified poly-C-C-alkyleneimines, melamine compounds, modified melamine compounds, poly-(C-C-alkyleneether) amines, polyetheramine polyols, and modified polyetheramine polyols. The invention also relates to aqueous pigment compositions containing a dispersant composition as defined herein, a pigment component, selected from the group consisting of pigments and mixtures of at least one pigment and at least one filler, and an aqueous diluent.

Dispersant composition

The presently claimed invention relates to polymer with branched structure, in particular, hydrophobically modified alkali-soluble (or alkali-swellable) emulsion (HASE) copolymers which are effective thickeners at high shear rates and at the same time offer a Newtonian rheology profile and their use in aqueous compositions, particularly in aqueous coating formulations as well as a method for preparing hydrophobically modified alkali-soluble (or alkali-swellable) emulsion copolymers.

Polymer with branched structure

The present invention relates to latex paints containing a) a multistage carboxylated polymer latex binder obtainable by multistage aqueous emulsion polymerisation of at least one non-ionic monomer which is selected from C-C-alkyl esters of acrylic acid, C-C-alkylesters of methacrylic acid, and vinyl aromatic monomers; one or more monoethylenically unsaturated monomers M2, which are selected from monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms, and where in at least one stage, monomers M2 added in this stage is at least 6% by weight; b) a titanium dioxide pigment; c) a polymeric dispersant selected from monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms, where the monomers make up at least 85% of the monomers forming the polymeric dispersant; and d) a thickener polymer.

Latex paint containing titanium dioxide pigment

The present invention relates to polyalkylene imine based polymers, which have aliphatic polyester groups attached to the polyalkylenimine backbone via an carboxamide group. The novel polymers are particularly useful as dispersants for pigments, in particular as dispersants for pigments in non-aqueous compositions. The polyalkylene imine based polymers are characterized by having a) a polyalkylene imine backbone; b) at least one aromatic moiety P.1, which is bound to a nitrogen atom of the polyalkylene imine backbone via an carboxamide or carboximide group; and c) at least one aliphatic polyester moiety P.2, which is bound to a nitrogen atom of the polyalkylene imine backbone via an carboxamide group.

Polyalkylene imine based polymers having polyester groups

The present invention is in the field of nanoparticles, their preparation and their use as pinning centers in superconductors. In particular the present invention relates to nanoparticles comprising an oxide of Sr, Ba, Y, La, Ti, Zr, Hf, Nb, or Ta, wherein the nanoparticles have a weight average diameter of 1 to 30 nm and wherein an organic compound of general formula (I), (II) or (III) or an organic compound containing at least two carboxylic acid groups on the surface of the nanoparticles (I) (II) (III) wherein a is 0 to 5, b and c are independent of each other 1 to 14, n is 1 to 5, f is 0 to 5, p and q are independent of each other 1 to 14, and e and f are independent of each other 0 to 12. 

Nanoparticles for the use as pinning centers in superconductors

The present invention relates to novel polymer dispersants in the form of comb polymers P and to a liquid composition containing solid fine particles, such as organic or inorganic pigments and fillers, and the polymer dispersants. The comb polymer P having at least 0.5 mol-%, e.g. 0.5 to 90 mol-%, based on the total amount of repeating units in the comb polymer, of repeating units A, selected from repeating units of the formulae la and lb: wherein Ris selected from the group consisting of hydrogen, &#x2014;S(&#x2550;O)R, C-Calkyl, C-Ccycloalkyl, aryl, heteroaryl, aryl-C-C-alkyl and heteroaryl-C-C-alkyl; and X indicates a polymer group of the following formula X wherein Z indicates a polymer segment or a monovalent alkyl or alkenyl segment having from 10 to 100 carbon atoms; R1 is as defined above; k is 0, 1, 2, 3 or 4; n is 0, 1 or 2; A is a chemical bond or a divalent moiety selected from the group consisting of C-Calkylene, &#x2014;O&#x2014;(C-Calkylene) or &#x2014;C(&#x2550;O)&#x2014;O&#x2014;(C-Calkylene), where the C-Calkylene part is attached to Q; Q is a divalent moiety selected from the group consisting of &#x2014;O&#x2014;, &#x2014;NH&#x2014; and &#x2014;S&#x2014;; Ris independently selected from the group consisting of &#x2014;OH, &#x2014;COOH, &#x2014;COOCH, &#x2014;NH, &#x2014;NH(C-Calkyl), &#x2014;N(C-Calkyl), &#x2014;NO, &#x2014;S(&#x2550;O)R, C-Calkyl, C-Calkoxy, halogen, aryloxy, aryl, heteroaryl. 

Polymer dispersants

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Sandhausen, Germany

Matthias Maier