| abstract |
The invention relates to a process for improving the organoleptic behavior and the physical properties of leather by using aqueous solutions of copolymers of 90 to 20% by weight of acrylic acid or methacrylic acid and 10 to 80% by weight of a monomer of the formula wherein in the formula R₁ is hydrogen or the methyl radical, R₂ and R₃, which are the same or different, denote the methyl or ethyl radical, X represents an optionally branched alkylene radical having 1 to 5 carbon atoms, the amine nitrogen is optionally neutralized or quaternized and the molecular weight of the copolymer, measured at a pH of 8.0, is less than 100,000. The copolymer concentration in the aqueous solution is 0.02 to 10% by weight, based on the shaved weight of the leather. |