| abstract |
(57) [Problem] To provide a method for producing a urea urethane solution having a wide range of compatibility and storage stability and having thixotropic activity. SOLUTION: An unreacted tolylene diisocyanate is removed from a mixture produced by reacting a monohydroxy compound with an excess of tolylene diisocyanate, and then the reaction product, a monoisocyanate adduct, is replaced with a diamine and a lithium salt. To produce a urea urethane solution by reacting in an aprotic solvent in the presence of This solution is useful as a thixotropic coating composition. |