Abstract

Leather was dyed pink or beige using various dyestuff types and a range of fixing agents after which it was base coated and either left without a topcoat or given a solvent based topcoat or an aqueous based topcoat. This range of samples was then subjected to accelerated ageing and colour changes were monitored. In the case of the pink leather significant colour changes were observed. It was concluded that these changes were not due to dye migration from leather to coating as originally thought but were associated with the fatliquor used in the leathermaking process. The type of topcoat applied had a significant influence on the degree of colour change observed.