Basf Aktiengesellschaft

Basfaktiengesellschaft

Basf Se Corporation

Roland Baumstark

Rolf Dersch

Michael Portugall

Kaspar Bott

Johannes Dobbelaar

Eckehardt Wistuba

Ekkehard Jahns

Cheng-Le Zhao

Gerhard Bauer

Hartwig Voss

Karl Haeberle

Joachim Pakusch

Joachim Roser

Bernhard Schuler

Sebastian Roller

Robert Rupaner

Claudia Wood

Bernhard Schlarb

Gerald Wildburg

Michael Melan

Stefan Kirsch

Claudia Heibel

Walter Machtle

Audrey Cosyns

Enrique Schweigger

Christian Lach

The invention relates to aqueous pigment preparations containing i) at least one copolymer P of ethylenically unsaturated monomers M in the form of an aqueous polymer dispersion which contains between 0.1 and 1.5 weight %, in relation to the total weight of the copolymer P, of polymerized itaconic acid as acid monomer M1, its salts and/or anhydride, where up to 50 weight % of the itaconic acid can be substituted by another monomer having at least one acid group or a neutralized acid group, and whose glass transition temperature T lies between &minus;10 and &plus;50&deg; C.; ii) at least one inorganic pigment; iii) possibly inorganic fillers; and iv) standard additives. The invention also relates to the use of the copolymers P containing itaconic acid for improving the wet-abrasion resistance of polymer-bound coatings containing pigments.

Dispersion resins containing itaconic acid for improving wet abrasion resistance

Binder formulations based on aqueous polymer dispersions having a minimum film-forming temperature of below 10&deg; C. and comprising at least one binder polymer P in the form of an aqueous dispersion comprising at least one anionic emulsifier and at least one nonionic emulsifier.

Binder formulations based on aqueous polymer dispersions

Method for reducing the quantity of residual monomers in aqueous polymeric dispersions

Method of reducing the quantity of residual monomers in aqueous dispersions of polymers

Method of coating substrates comprising polyurethane

Aqueous polymer emulsion

Polymers composed of at least &gt;80% by weight of monomers of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.5 -alkyl and X is 0 or NH, are used as assistants in the drying of aqueous polymer dispersions and, in the case of a weight average relative molecular weight of from 5000 to 35,000, additionally as protective colloid for the preparation of aqueous polymer dispersions by the free radical aqueous emulsion polymerization method.

Use of polymers as assistants in the drying of aqueous polymer

The present invention relates to low-odor binders which can be processed without solvent and are based on aqueous styrene-acrylate polymer dispersions, having a mean film-forming temperature of below 10.degree. C. The invention also relates to low-emission coating compositions, especially emulsion paints, which comprise these binders.

Binders for low-emission coating compositions

Process for preparing an aqueous polymer dispersion

An aqueous polymer emulsion is obtained by polymerizing first a monomer composition 1 in a first polymerization stage and then a monomer composition 2 in a polymerization stage 2, in each case by the free radical aqueous emulsion polymerization method, one of the two monomer compositions essentially comprising hard monomers and the other monomer composition essentially comprising soft monomers, and, in addition to the monomer compositions 1 and 2, nitrogen-containing adhesion-promoting monomers being polymerized, at least 20 mol % of the total amount of the adhesion-promoting monomers being polymerized in polymerization stage 1.

Carbamoylhydroxylamines and polymer-containing solution or dispersion

Aqueous polymer compositions

Salt-free aqueous solutions of bisaminoxyalkanes (I) are prepared by a process in which

Preparation of substantially salt-free aqueous solutions of

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Neustadt, Germany

Roland Baumstark