Wacker-chemie Gmbh

Wacker Polymer Systems Gmbh & Co. Kg

Herbert Eck

Gerald Fleischmann

Heinrich Hopf

Klaus Adler

Reinhard Jira

Alfred Prasse

Hermann Lutz

Manfred Hannebaum

Peter Ball

Reiner Figge

Franz Jodlbauer

Dieter Gerhardinger

Ernst Innertsberger

Jakob Schmidlkofer

Hartmut Brabetz

Hartmut Menzel

Wilhelm Lechner

Christof Kemenater

Klaus Hafener

Kunigunde Kolbig

Hans-Peter Weitzel

Richard Weidner

Herbert Barthel

Klaus Kohlhammer

Johann Schuster

Klaus Marquardt

Theo Mayer

Michael Roth

Hermann Petersen

Peter John

Konrad Alfons Wierer

Hubert Wiest

Hellmuth Spes

Hardy Herold

Erich Pilzweger

Robert Singer

Klaus H Kaiser

Wilhelm Kaiser

Frank Muller

Helmut Weber

Ekkehard Patrick

Ulrich Demlehner

Siegfried Pflaum

Paul-Gerhard Kirst

Gunter Weinhold

Walter Goblmeier

Hans Donislreiter

Guenter Von Au

Sven E Wihrheim

Hans Schwarzbauer

Elmar Bethe

Werner Bathelt

Petra Wenzeler

Otto Zeller

Hohl Horst

The invention provides cross-linkable polymer powder compositions containing a) at least one water-soluble polyhydroxy compound; b) at least one boric acid complex compound which is of limited solubility in water that is, it has a water solubility of less than 10 g per liter at normal conditions; and optionally c) a water-soluble film-forming polymer consisting of one or more free-radical polymerizable, ethylenically unsaturated monomers. The compositions are useful as a constituent in adhesives, plaster, jointing mortars, paints and binders for coating compositions, textiles, paper and the like.

Cross-linkable polymer powder compositions

Polymer composition for flexibilizing building materials

The invention relates to a hydrophobicizing agent for gypsum-plaster-bound construction materials comprising a substrate based on pulverulent organic or inorganic solids with a BET surface area >5 g/m and comprising one or more organopolysiloxanes having Si-bonded hydrogen (organohydropolysiloxanes) built up from units of the general formula H SiR O , where the radicals R are identical or different monovalent hydrocarbon or hydrocarbonoxy radicals having from one to 15 carbon atoms, or are hydroxyl groups, with the proviso that at least one Si-bonded hydrogen atom per molecule is present, and a takes values from 0 to 3, and b takes values from 0 to 3.

Hydrophobicizing agents for hydrophobicizing gypsum-plaster-bound construction materials

Crosslinkable polymer compositions are provided which can be in the form of a polymer powder which is redispersible in water or as an aqueous dispersion. The polymer composition is composed of A) a copolymer of one or more comonomers of vinyl esters of straight-chain or branched alkanecarboxylic acids having 1 to 18 C atoms, acrylates or methacrylates of branched or straight-chain alcohols having 1 to 15 C atoms, dienes, olefins, vinylaromatics and vinyl halides, and of from 0.1 to 10% by weight, based on the total weight of the comonomers, of one or more ethylenically unsaturated comonomers containing epoxide groups, and B) one or more non-copolymerizable compounds having at least two epoxide groups. The invention furthermore relates to a process for the preparation of the crosslinkable polymer compositions and their use in chemical products for the construction industry.

Crosslinkable polymer composition

The invention concerns a dispersion powder composition which is redispersible in water and is made from water-insoluble organic polymers, the composition being characterized in that it contains 0.1 to 30% by wt., relative to the weight of the organic polymers, of one or more silicon compounds which are dispersible in water and which have a boiling point at normal pressure of 160 degrees C., selected from the group comprising the silanes, polysilanes, oligosiloxanes, carbosilanes, polycarbosilanes, carbosiloxanes, polycarbosiloxanes and polysilylenedisiloxanes. The invention also concerns methods for manufacturing such compounds and their use.

Redispersible dispersion powder composition, process for its preparation and its use

The invention relates to a process for preparing crosslinkable redispersible powders containing isocyanate groups by aqueous, emulsion copolymerization of ethylenically unsaturated monomers, at least one of which is isocyonate-functional, followed by drying, preferably spray drying, in the presence of a protective colloid.

Method for producing cross-linkable redispersible powders containing isocyanate groups

Crosslinkable powder composition which is redispersible in water

The invention concerns a dispersion powder composition which is redispersible in water and is made from water-insoluble organic polymers, the composition being characterized in that it contains 0.1 to 30% by wt., relative to the weight of the organic polymers, of one ormore silicon compounds which are dispersible in water and which have a boiling point at normal pressure of 160&deg; C., selected from the group comprising the silanes, polysilanes, oligosiloxanes, carbosilanes, polycarbosilanes, carbosiloxanes, polycarbosiloxanes and polysilylenedisiloxanes. The invention also concerns methods for manufacturing such compositions and their use.

Process for the preparation of a redispersible dispersion powder composition

Redispersable cross-linkable dispersion powders

Process for treating mineral coating agent and binder compositions with

A crosslinkable powder composition is provided which is redispersible in water and comprises a) from 30 to 95 parts by weight of one or more water-insoluble, film-forming polymers of free-radically polymerizable, ethylenically unsaturated monomers, where from 0.5 to 10% by weight of the monomers, based on the total weight of the polymer a), are ones having one or more substituents selected from the group consisting of aldehyde, keto, epoxide, isocyanate, carboxylic anhydride and aziridine groups, b) from 5 to 70 parts by weight of one or more water-soluble, film-forming polymers, where the parts by weight of a) and b) add up to 100 parts by weight, and c) one or more compounds containing at least two functional groups which are present in salt form and are selected from the group consisting of amines, hydrazides, hydroxylamine esters, aryl- and alkylhydrazines or -hydrazones.

Process for preparing water-redispersible powder compositions comprising

A process for the preparation of water-redispersible dispersion powder compositions which are modified with additives and are based on polymers of ethylenically unsaturated compounds, includes drying the corresponding aqueous polymer dispersion and applying additives, which are liquid at a temperature of .ltoreq.50.degree. C., to a pulverulent carrier material, and then adding the resulting powder during or after drying of said dispersion.

Process for the modification of dispersion powder compositions

The invention relates to a process for the preparation of microcapsulated flakes or powders by drying aqueous mixtures containing (a) one or more water-emulsifiable, non-thermoplastic compounds which have a higher boiling point than waterand (b) at least one water-soluble, film-forming polymer, in which the content of component (a) is up to about 95% by weight, based on the dry weight of components (a) and (b), with the proviso that the water-soluble, film-forming polymer has a flocculation point of from 20.degree. to 98.degree. C. or the flocculation point is adjusted to from 20.degree. to 98.degree. C. with the aid of additives, and drying is carried out by thin-layer drying in a temperature range above the flocculation point.

Process for the microencapsulation of water-emulsifiable

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Burghausen, Germany

Herbert Eck