USE OF SULFONAMIDE DERIVATIVES HAVING OXYGEN-CONTAINING END GROUPS ASMODIFYING AGENTS AND/OR PIGMENT GRINDING AGENTS FOR THE MANUFACTURE OF MOLDED POLYURETHANE ARTICLES AND POLYURETHANE VARNISHES

摘要

Procedure for modifying polyurethane compounds, characterized by treating with pigments or mixed compositions thereof, a polyurethane solution with an N-substituted aromatic sulfonamide, provided with oxygenated end groups, of the general formula **(See formula)** in which Ar is the benzene radical; R1 = H or the alkyl radical of 1 to 3 carbon atoms; R2 = an alkylene radical of 1 to 5 carbon atoms; and R3 = H, an alkyl radical of 1 to 3 carbon atoms or an acyl radical of 1 to 4, to modify, giving them new characteristics, especially of uniform coloration, of electrical conductivity or softness, resistant to washing and solvents, being able to combine the aforementioned sulfonamides, in concentrations of 0.5 to 30% by weight with respect to the polyurethane compound, in the formation of moldings and varnishes. (Machine-translation by Google Translate, not legally binding)