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Purpose. The purpose of the article was the modification of the urethane thickeners received from blockcopolyurethanes solutions that eliminates the phenomenon of thickener thickening in the shear flow and provides improving of its pseudoplastic properties. Methodology. The problem was solved by analyzing of existing ideas about the causes of appearance of shear thickening in disperse systems and features of chemical structure, properties of blockcopolyurethanes, including gels formed by them. The base of the experimental data has been obtained by rotational viscometry. Findings. The rheological curves of urethane thickeners and influence on its rheological behavior metals' salts, which capable to formation of coordination bonds, and additives of polymers another types as gels to urethane thickener. Originality. The mechanism of influence of metals ions and additives of polymers another types on urethane thickener, whereby the phenomenon of thickener shear thickening is excluded, has been described first. The mechanism of action of additives to urethane thickener is based on weakening or exclusion of possible interaction between urethane groups. Practical value. The proposed modification methods improve the urethane thickeners' pseudoplastic properties, which allows to use its in pigmented systems for printing, including printing at low shear rates. [ABSTRACT FROM AUTHOR]