[DANISCH, Peter, DIX, Johannes, Peter, DENZINGER, Walter, KISTENMACHER, Axel, KNEIP, Michael, MÜLLER, Hans-Joachim, RÖSCH, Joachim Dr., SCHORNICK, Gunnar]

[PETROVIC, Susanne, SEITZ, Andreas, DANISCH, Peter, BETHGE, Hartmut, JANSON, Werner, BELL, Hubertus, Peter]

[DANISCH PETER, DIX JOHANNES PETER, DENZINGER WALTER, KISTENMACHER AXEL, KNEIP MICHAEL, MULLER HANS-JOACHIM]

[PETROVIC, Susanne, SEITZ, Andreas, DANISCH, Peter, BETHGE, Hartmut, JANSON, Werner, BELL, Hubertus, Peter] 67056 Ludwigshafen;Luitpoldstr. 23b 67063 Ludwigshafen;Otto-Dill-Str.1 67134 Birkenheide;An der Mittagsweide 123 67065 Ludwigshafen;Eschenbachstr. 50 67063 Ludwigshafen;Im Nonnengarten 49 67098 Bad Dürkheim;Lameystrasse 3 68165 Mannheim The invention relates to a method for producing leather, said method being characterised in that tanned animal skins are treated in step (A) with an aqueous bath containing (a) at least one copolymer that can be obtained by the copolymerisation of (a1) at least one ethylenically unsaturated C4-C8 dicarboxylic acid or at least one derivative of an ethylenically unsaturated C4-C8 dicarboxylic acid and (a2) at least one C8-C100-α-olefin, and optionally by hydrolysis and/or at least partial neutralisation, (b) at least one paraffin which is liquid at room temperature, and (c) at least one synthetic non-ionic emulsifier, the aqueous solution being free of silicons. The invention also relates to silicon-free aqueous formulations and to the use thereof.

[MARKUS BRYM, Audrey Renoncourt, Stephan Huffer, Gerhard Wolf, Ulrike Mahn, Edward Bohres, Petra Schöcker, Hubertus Peter Bell, Peter Danisch] DE Ludwigshafen Process for the production of leather, wherein pelts, pickled pelts or semifinished products are treated with at least one copolymer (A) which is obtainable by copolymerization of the following comonomers: (a) at least one ethylenically unsaturated C3-C10-carboxylic acid or at least one ethylenically unsaturated C4-C10-dicarboxylic acid or its anhydride, (b) at least one (meth)acrylate of an α-branched C3-C10-alkanol, (c) at least one (meth)acrylate of a primary C4-C20-alkanol.

[Markus Brym, Audrey Renoncourt, Stephan Huffer, Gerhard Wolf, Ulrike Mahn, Edward Bohres, Petra Schocker, Hubertus Peter Bell, Peter Danisch] DE Ludwigshafen Process for the production of leather, wherein pelts, pickled pelts or semifinished products are treated with at least one copolymer (A) which is obtainable by copolymerization of the following comonomers: (a) at least one ethylenically unsaturated C3-C10-carboxylic acid or at least one ethylenically unsaturated C4-C10-dicarboxylic acid or its anhydride, (b) at least one (meth)acrylate of an α-branched C3-C10-alkanol, (c) at least one (meth)acrylate of a primary C4-C20-alkanol.

[PETROVIC, Susanne, SEITZ, Andreas, DANISCH, Peter, BETHGE, Hartmut, JANSON, Werner, BELL, Hubertus, Peter] null, 67056 Ludwigshafen, DE

[AUDREY RENONCOURT, EDWARD BOHRES, GERHARD WOLF, HUBERTUS PETER BELL, MARKUS BRYM, PETER DANISCH, PETRA SCHÖCKER, STEPHAN HÜFFER, ULRIKE MAHN] DE

[WEYLAND, Peter, DEMHARTER, Susanne, DANISCH, Peter, OETTER, Günter] null, 67056 Ludwigshafen, DE

[BRYM, Markus, RENONCOURT, Audrey, HÜFFER, Stephan, WOLF, Gerhard, MAHN, Ulrike, BOHRES, Edward, SCHÖCKER, Petra, BELL, Hubertus Peter, DANISCH, Peter] null, 67056 Ludwigshafen, DE