Leather treatment agent and its use
AssigneeBayer Aktiengesellschaft
InventorsHarro Traubel, Manfred Dietrich, Hans-Werner Muller, Gunther Held
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Abstract
Leather treatment agent containing a mixture a) of a carboxylic acid X--COOH I wherein X represents --[R--CO--Z--(R'--Z).sub.a ].sub.b --CO--R--COOH 1 or --R"--(Z--R').sub.c --Z--CO--R--COOH 2 and the symbols have the meaning described in more detail in the description, and b) of a compound containing at least one primary, secondary or tertiary amino group, with a molecular weight of 200-20,000, are used in processes for tanning, pretanning, retanning, dyeing or fat liquoring pelts or pretanned leather or fully tanned leather.
Claims6
Agents for the treatment of leather, comprising a mixture of a) an ester prepared from a carboxylic acid of the formula
- HOOC--R.sub.2 --COOH
- or the anhydride thereof, wherein
- R.sub.2 represents C.sub.1 -C.sub.4 -alkylene,
- and a polyhydroxy compound of the formula ##STR6## wherein R.sup.3 and R.sup.4 independently represent hydrogen or methyl, and
- d represents 1-8;
- and b) a compound containing at least one amino group and containing an ether group with a molecular weight of 300-12,000 and which is prepared by addition of ethylene oxide and/or propylene oxide onto alkanolamines, the weight ratio of components a) :b) being 5:95 to 95:5.
Dependencies are inferred from the claim text.