Smila A. The forming of coats on the leather by colouring polyurethanes

The dissertation is dedicated to elaboration of the methods finish of leather with usage designed of the colouring polyurethanes for production of lacquer leathers and for leathers of aniline finish. Is rotined, that the investigated products have all indispensable characteristics for usage them in a role of a main film-forming material for coat dyeing of leathers. The availability of chemical interaction fissile groups of the coloured polyurethanes with groups of a chromed collagen of a derma is proved. The coating on leather treated for designed by the technology responds by all technological, hygienic and aesthetic requirement. The new technology allows to receive tanning production high quality with an indispensable complex of properties, without costs on expensive import materials and with economies of technological time, thus expanding a range of finished products.