Leather Finishing with New Pigment Paste

The paper presents obtaining and characterisation of full grain bovine shoe upper leather finished with new pigment pastes containing flax seed oil (brown colour) and poppy seed oil (yellow colour) as plasticizer instead of castor oil (reference). Nitrocellulose, polyurethane or acrylic dressing were used as final dressing. Finished leathers were characterized by physical-mechanical analysis and colorimetric method before and after aging. The leathers finished with polyurethane or acrylic final dressing had the highest resistance to light after aging under the influence of artificial light in comparison with those finished with nitrocellulose dressing. Flax and poppy seed oils used as plasticizers improved resistance to ageing of coating.