| 摘要 |
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-alpha-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. ® KIPO & WIPO 2008
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