摘要 |
Leather products that are well lubricated, impermeable and water-repellent are produced by impregnating tanned leather under alkaline conditions with an aqueous emulsion of an emlsifier carboxylic acids or anhydrides containing at least 16 carbon atoms, in particular polyisobutenyl succinic acid or its anhydride containing at least 30 carbon atoms, or its sulphonic derivative followed by retanning with basic solutions or with the emulsion which is also covered may additionally contain fatty acids.
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