Continuous process for the manufacture of urea urethanes

Abstract

Suggested is a continuous process for the manufacture of urea urethanes, comprising or consisting of the following steps: (a) providing at least one monohydroxyl compound (a1); at least one diisocyanate compound (a2); at least one diamine compound (a3) optionally at least one isocyanate stabilizer (a4); at least one solvent (a5); optionally at least one anti-gelling agent (a6) (b) blending said components (a2) and (a4) to form a first pre-mix (b1); (c) feeding said component (a1) and said first pre-mix (b1) to a first continuous reactor to form an intermediate (b2); (d) blending said components (a3), (a5) and (a6) to form a second premix (b3); (e) feeding said intermediate (b2) and said second premix (b3) to a second continuous reactor to form the urea urethane; and (f) collecting the urea urethane from the second continuous reactor.

Dependencies are inferred from the claim text.