Basf Aktiengesellschaft

Basf Se Corporation

Stahl International B.v.

Oliver Reese

Michael Schmidt

Guenter Scherr

Stephan Hueffer

Bernhard Albert

Joachim Pakusch

Volker Bach

Evelyn Fuchs

Joachim Roser

Walter Gramlich

Berend Eling

Günter Scherr

Stephan Hüffer

Gerhard Wolf

Konrad Roschmann

Stephan Weinkötz

Heinrich Sack

Andreas Emge

Ines Pietsch

Martin Reif

Nils Mohmeyer

Andrea Eisenhardt

Franz Xaver Redl

Ralph Lunkwitz

Michael Finkenauer

Stefan Schroeder

Stefan Auffarth

Sebastien Garnier

Juergen Decker

Harald Kiesow

Marcus Leberfinger

Ulrich Mrowietz

Marine Boudou

Xiao-Kun Yang

Cheun-Gwo Chen

YueXia Feng

Heinrich Mohmeyer

The present invention relates to a process for production of artificial leather comprising top coat, polyurethane layer and optional substrate layer, said process comprising i) providing a release layer, ii) applying one or more than one layer of a top coat to the release layer to an overall top coat layer thickness in the range from 1 to 500 &#x3bc;m, iii) applying first polyurethane system components comprising an isocyanate component (A) and a polyol component (B) to the top coat to form a first polyurethane layer, wherein the isocyanate index of the first polyurethane system components is in the range from 101 to 140, iv) optionally applying further polyurethane system components to the first polyurethane layer to form further polyurethane layers, v) optionally applying a substrate layer to the polyurethane system components, vi) curing the polyurethane system components to form a polyurethane layer, and vii) separating the release layer from the top coat, wherein the overall thickness of the first and optionally further polyurethane layers is in the range from 0.01 to 20 mm and the polyurethane system components are solvent-free. The present invention further relates to an artificial leather obtainable by such a process and to the use of the artificial leather as upper materials for footwear.

Method for producing an artificial leather with improved flexing endurance properties

A process for the production of leather using one or more reaction products of

Compounds and their use for producing leather and as dispersants

Process for the production of leather using products obtainable by reacting (A) at least one cyclic organic carbonate with (B) at least one compound having at least two nucleophilic groups per molecule, selected from sulfonic acid, hydroxyl, primary or secondary amino or mercapto groups.

Leather production method and products suited thereof

A process for the preparation of a readily water-redispersible polymer powder by spray drying of an aqueous polymer dispersion in the presence of a novel spray drying assistant.

Method for producing polymer powders that can be easily redispersed in water

An epichlorohydrinamine polymer has a ratio of amine units to epichlorohydrin units of from 0.8:1.2 to 1.0:1.0, dimethylaminopropylamine and benzylamine preferably being used as amine and/or ammonium units. The novel epichlorohydrinamine polymer is used, for example, for the surface treatment of semifinished leather products and textile materials.

Epichlorohydrin amine polymers used for treating the surface of leather

Adducts are obtained by reacting carbonyl compounds of the formula I where Rand Rare as defined, with cyclic compounds of the formula II where X is selected from oxygen, sulfur and N&#x2014;R, R-Rare as defined, and n is an integer from 1 to 4, which adducts are useful as tanning agents and preservatives.

Adducts based on cyclic compounds and the use thereof as tanning agents and curing agents

A process for the preparation of aqueous formulations, and aqueous formulations so prepared, the process comprising heating at least one cyclic compound of the formula I in the presence of water and of an acidic catalyst and, during or after the heating, H&#x2014;X&#x2014;Ris at least partially separated off, where, in formula I, X is selected from oxygen, sulfur and N&#x2014;R, R-Rare as defined, and n is an integer from 1 to 4.

Processes for preparing and using tanning agents and preservatives

Growing community of inventors

Ludwigshafen, Germany

Oliver Reese