ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,280, issued on Dec. 9, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).
"Process for producing a polyurethane composition" was invented by Stephan Salzinger (Heerenveen, Netherlands) and Robert Reichardt (Ludwigshafen am Rhein, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The presently claimed invention provides a continuous process for preparing a polyurethane composition which behaves as a rheology modifier upon addition to paint and coating formulations. The present process employs mixers for homogenization of highly viscous polyurethane polymers and by adjusting the process parameters and reactor conditions in specified ranges ...