| abstract |
The invention relates to a polyether urethane of the general formula in which mean: R¹ = H or an alkyd radical with 1 to 8 carbon atoms R² = an alkylene radical with 2 to 10 C atoms or a cycloalkylene radical with 6 to 20 C atoms or an arylene radical with 6 to 20 C atoms R³, R⁴ = an optionally substituted alkyl radical with 1 to 8 carbon atoms or a common ring, the members of which are R³ and R⁴ n = 2 to 180 m = 1 to 15n n n The invention further relates to a process for its preparation, a leveling aid for aqueous paints and the use of the polyether urethanes as leveling agents in aqueous, cathodically depositable electrocoat materials. |