V. B. Ivanov

Optimization of oligourethane methacrylate based UV paints composition for printing on cotton fabrics

The effect of structure and content of the main components of UV paints (disperse dyes and pigments, photoinitiators, oligomers, cross-linking agents) and some auxiliary substances on photosensitivity of paints and color fastness are studied. Optimization of the composition of UV paints containing disperse dyes offers smaller color variation in UV drying and provides high color fastness to wetting and rubbing. A disadvantage of UV paints based on disperse dyes, is the relatively low fastness to light, which may be overcome by substituting the latter by organic pigments. For more optimal correspondence to other modern technologies of pigment printing, the use of emulsion UV paints is suggested. Such paints provide materials with good hygroscopic properties, improved physicomechanical characteristics and high color fastness.

Ultraviolet paints based on nanopigments for printing on textile materials

The effect of the modifier structure and content, as well as the dye structure, on the absorption on montmorillonite nanoparticles has been studied. The discovered dependencies have been used for obtaining nanopigments with high content of the coloring component based on cationic, direct, acid, active or disperse dyes. The effect of the coloring component on photopolymerization of the oligomer/monomer binder is estimated and the optimum compositions of ultraviolet (UV) paints with nanopigments are determined. It has been shown that developed UV paints possess higher light sensitivity compared with conventional organic pigments, and allow a dyed material with increased resistance to rubbing and tensile strength to be obtaining.