THE PREPARATION METHOD OF THIXOTROPIC AGENT WHICH IS UREA MODIFIED AMIDE SOLUTION

摘要

A method for preparing a thixotropic agent of a urea modified amide solution is provided to obtain a simpler production method and to save time and cost because grinding and aging steps are not required, as compared with the conventional preparation method of an amide wax-based thixotropic agent. A method for preparing a thixotropic agent of a urea modified amide solution includes the steps of: mixing 1 equivalent of a bifunctional amine with 0.4-0.6 equivalent of a monofunctional organic acid to subject the mixture to a condensation reaction; and adding 0.4-0.6 equivalent of a bifunctional or trifunctional isocyanate to the resultant to cause a urea coupling reaction with the residual amine, and thereto adding a solvent if an amine value is below 0.1 mgKOH/g.