Basf Aktiengesellschaft

Basf Se Corporation

Mubarik Mahmood Chowdhry

Markus Schmid

Stefan Mecking

Xavier Sava

Peter Preishuber-Pfluegl

Florian M Bauers

Reinhold J Leyrer

Marc Oliver Kristen

Horst Weiss

Monica Haag

Hideki Yamashita

Oliver Wagner

Bernhard Schuler

Wolfgang Gaschler

David Christie

Jacob Wildeson

Alexandre Terrenoire

Dieter Distler

Ekkehard Lindner

Peter Preishuber-Pflügl

Peter Wegner

Ulrich Nieken

David Redfern

Mun Hoe Stanley Kwan

Jonathan Allen

Chee Seng Yong

Chris Titmarsh

Martin Zuideveld

Mahmoud Sunjuk

Ludmila Kolb

Roger Jan Van Sonsbeek

Jonathon Shane Allen

Gregory John Catterall

Cheeseng Yong

The invention also relates to a method to increase stain resistance and penetration resistance of aqueous coating compositions which method comprises providing a coating composition which contain at least one pigment, at least one film-forming polymer in the form of an aqueous polymer dispersion and at least one anionic surfactant, wherein the anionic surfactant comprises at least 85% by weight, preferably at least 90% by weight, more preferably at least 95% by weight, based on the total weight of anionic surfactant in the coating composition, of at least one anionic surfactant S, which is selected from semi-esters of sulfuric acid or phosphoric acid with an alcohol, which alcohol carries at least one alkyl radical having from 8 to 30 carbon atoms or an alkyl substituted phenyl radical wherein alkyl has from 4 to 30 carbon atoms and which alcohol may carry an oligo-C-C-alkylene-ether group provided that the number of repeating units in the oligo-C-C-alkylene-ether group is at most 15, or a salt thereof.

Method to increase resistance against stain penetration of aqueous coating compositions

The present invention relates to the use of a polymer dispersion (PD) comprising at least one polymer (P), obtainable by free-radical emulsion polymerization of at least one ethylenically unsaturated monomer (M1) and at least one monomer (M2) different therefrom and selected from esters of phosphonic acid or of phosphoric acid with unalkoxylated or alkoxylated hydroxyalkyl(meth)acrylates, and at least one emulsifier (E) selected from phosphoric esters with unalkoxylated or alkoxylated C-Calkanols, and their salts, in coating materials to improve the scrub resistance of the coatings produced therefrom and/or to improve the burnish resistance of the coatings produced therefrom and/or to improve the stain resistance of the coatings produced therefrom and/or to improve the pigment distribution in the coatings produced therefrom and/or to reduce the emission of volatile organic compounds by the coatings produced therefrom, to polymer dispersions used in accordance with the invention, and to coating materials comprising the polymer dispersions of the invention.

Polymer dispersions containing phosphorous polymers and emulsifiers

Process for preparing an aqueous polymer dispersion by polymerizing at least one ethylenically unsaturated monomer B in an aqueous medium in the presence of polymer particles A and at least one dispersant.

Method for the production of an aqueous polymer dispersion

An aqueous polymer dispersion is prepared by reacting at least one olefin in the presence of at least one polymerization catalyst and one emulsifier in an aqueous medium by a process wherein the polymerization catalyst is prepared in an in situ reaction by reacting the ligand compound 2,6-dichloro-para-benzoquinone (Ia) and/or 2,3,6-trichloro-para-benzoquinone (Ib) with a phosphine compound or diphosphine compound and with a metal compound and the polymerization reaction is effected in an aqueous medium.

Method for emulsion polymerizing olefins

A method for the emulsion polymerization of one or more olefins by reacting a ligand of general formulae Ia and Ib or a mixture of at least two ligands Ia or Ib, wherein R respectively represents one or several of the following radicals; hydrogen, halogen, nitrile, C-C-alkyl groups, C-C-alkoxy groups, C-C-aralkyl groups, C6-C14-aryl groups, and wherein identical or different compounds of general formulae Ia and Ib can, optionally, be concatenated by one or several bridges, with a phosphine compound PR3' and a metal compound of general formula M(L)or M(L)(L), wherein the variables are defined as follows: M is a transition metal of groups 7-10 in the periodic system of the elements; Lrepresents phosphanes (R)PHor amines (R)NHwith identical or different radicals R, ether (R)O, HO, alkohols (R)OH, pyridine, pyridine derivatives of formula CH(R)N, CO, C-C-alkylnitriles, C-C-arylnitriles or ethylenically unsaturated double bond systems, wherein x is a whole number ranging from 0-3, Lrepresents halogenide ions RNH, wherein x is a whole number ranging from 0 3 and Rrepresents C-C-alkyl, and C-C-alkylane ions, allylane ions, benzylane ions or arylane ions, wherein Land Lcan be concatenated with each other by one or several covalent bonds, z is a number ranging from 0 4. The invention also relates to the immediate use of the reaction product in the polymerization or copolymerization of olefins in water or in a solvent mixture containing at least 50 vol. % water in the presence of an emulsifier and, optionally, in the presence of an activator. 

Method for the emulsion polymerization of olefins

The invention relates to a method for the production of aqueous polymer dispersions, by the polymerisation of one or more olefins in aqueous media in the presence of dispersing agents and optionally organic solvents, characterised in that the polymerisation of the olefin(s) is catalysed by means of one or more complex compounds of general formula (I), where at least one of the groups Rto Rmust be in the form of a group of the following general formula (II) where Z=an electron-withdrawing group and n=a whole number from 1 to 5.

Preparation of aqueous polymer dispersions

Process for preparing an aqueous polymer dispersion by polymerization of at least one olefinically unsaturated compound in an aqueous medium in the presence of at least one dispersant and a solid polymerization catalyst.

Method for producing aqueous polymer dispersions

Process for the emulsion polymerization of one or more olefins by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical and subsequently using the reaction product for the polymerization or copolymerization of olefins in water or in a solvent mixture which contains at least 50% by weight of water and at least one emulsifier.

Method for emulsion polymerisation of olefins

A method for reducing the amount of residual monomer in aqueous polymer dispersions by aftertreatment with an initiator system comprises aftertreating the aqueous polymer dispersion with addition of an initiator system essentially comprising

Method for the reduction of the residual monomer content in aqueous polymer dispersions

Process for the production of aqueous polymer dispersions by reaction of one or more olefinically unsaturated compounds in aqueous medium in the presence of a complex compound which possesses the structural element Y&mdash;M&mdash;E, E standing for nitrogen, M for a transition metal of groups 7 to 10 of the periodic system of the elements and Y for oxygen, sulfur, nitrogen or phosphorus, and which possesses no hydrophilic groups in its ligand system.

Process for the production of aqueous polymer dispersions

In a process for the metal-catalyzed preparation of copolymers of carbon monoxide and an olefinically unsaturated compound having from 2 to 20 carbon atoms in an aqueous medium, the copolymerization is carried out in the presence of a water-soluble macromolecular host compound which has a hydrophobic cavity and a hydrophilic shell.

Preparation of copolymers of carbon monoxide and an olefinically unsaturated compound in an aqueous medium

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Strasbourg, France

Mubarik Mahmood Chowdhry