Basf Aktiengesellschaft

Basf Se Corporation

Bertold Bechert

Manfred Schwartz

Harm Wiese

Wolfgang H&uuml;mmer

Bernd Reck

Eckehardt Wistuba

Gerd Rehmer

Gernot Franzmann

Rolf Petri

Erich Beck

Wolfgang Reich

Klaus Menzel

Cheng-Le Zhao

Bernhard Dotzauer

Harry Distler

Hans-Juergen Denu

Reinhard B&auml;cher

Hans-J&uuml;rgen Denu

Norbert Scholz

Walter Schneider

Walter Herrmann

Hans-Jürgen Denu

Olaf Unbehaun

Uwe Hampel

Horst Gassmann

Heinz Hesser

Reinhard B&auml;echer

Wolfgang Hümmer

Aqueous formulations comprising as film-forming constituent at least one copolymer P, synthesized from ethylenically unsaturated monomers M, are used for coating shaped mineral articles, the copolymer P having a glass transition temperature in the range from &minus;25 to &plus;80&deg; C. and the monomers M comprising more than 0.2% by weight and up to 5% by weight, based on their overall weight, of itaconic acid as monomer M1.

Method of coating a shaped mineral article

In a process for preserving a mineral molding by coating the surface of the mineral molding with an aqueous composition comprising an aqueous polymer dispersion, the dispersed polymer P comprises an ethylenically unsaturated acid of the 2-acrylamido-2-methylpropanesulfonic acid type polymerized into it in free-radically polymerized form.

Aqueous (meth)acrylate polymer dispersion

The invention describes a method of coating a concrete molding which comprises a) the application of at least one plastic, cement-bound mineral composition to an uncoated mineral molding wherein said plastic composition comprises at least one aqueous polymer dispersion and b) bringing about the setting of the plastic composition, wherein the aqueous polymer dispersion comprises: at least one polymer P in the form of dispersed polymer particles with a glass transition temperature of from &minus;20 to &plus;80&deg; C., the polymer containing not more than 2% by weight of copolymerized monoethylenically unsaturated monomers having an acid group.

Use of aqueous polymer dispersions for modifying mineral coatings for concrete moldings

Aqueous, film forming preparations for coating mineral shaped bodies

Process of coating a mineral molding with an aqueous preparation comprising, as film-forming constituent, at least one polymer P

Use of aqueous film-forming preparations based on copolymers of methacrylic acid alkyl esters for coating mineral shaped bodies

Preservation of a mineral molding

The present invention relates to a process for coating mineral moldings with film-forming aqueous formulations in which in succession at least one 1st formulation comprising at least one copolymer P1 as binder and at least one inorganic pigment is applied to the mineral molding and, if desired, is dried and then at least one 2nd formulation comprising at least one copolymer P2 as binder and, if desired, inorganic pigment is applied, the copolymers P1 and P2 each being composed of monomers A, B and, if desired, C, wherein identical monomers A and B are selected in each case for the copolymers P1 and P2 and the 1st. formulation has a pigment volume concentration which is greater by at least 10 than that of the 2nd formulation, and to a composition of said 1st and 2nd formulations and to the use of said 1st and 2nd formulations for coating mineral moldings.

Coating mineral moldings

Radiation-curable preparations comprise at least one polymer which has ethylenically unsaturated double bonds and are used for the coating of mineral moldings. A process for coating mineral moldings, and also mineral moldings which have a coating cured by radiation, are also described.

Coating of mineral moldings with radiation-curable preparations

Precast concrete which is coated with a copolymer A with a glass transition temperature of rom -25.degree. to +30.degree. C. and composed of

Polymer-coated precast concrete

Mono- or di-alkyl phosphate or their alkali metal salts or optionally substituted ammonium salts for use as antifoaming and hydrophobizing additives for hydraulic binders.

Mono- and/or di-alkyl phosphates as additives for hydraulic binders

A track or switch tamping machine wherein the machine includes tamping and ramming units having longitudinal ducts for injecting liquid binder into the ballast. The longitudinal ducts terminate in a plate or cavity within the lower portion of the tamping and ramming units. A nozzle is also included in the unit as is means for conveying liquid binder from a storage tank carried on the machine.

Apparatus for consolidating ballast

Growing community of inventors

Grünstadt, Germany

Bertold Bechert