COMPOSITION FOR DYEING NATURAL LEATHER Russian patent published in 1995 - IPC

FIELD: intended for dyeing, finishing and tanning natural leather articles. SUBSTANCE: the composition comprises 5-20% a colorant such as tyrasol based on a metal complex dye in an organic solvent; 10-20 % ethyl or n-butyl alcohol; 7-25 % varnish based on a solution or emulsion of cotton colloxylin and ethyl acetate up to 100 %, the balance. The composition reduces the coating layer thickness, retain natural face surface and natural feel of leather after the dying operation and also improves adhesion of the coating. EFFECT: improved properties of the composition.