ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,202, issued on June 24, was assigned to Evonik Operations GmbH (Essen, Germany).
"One pot synthesis of urea (meth)acrylates" was invented by Sebastian Bestgen (Eschborn, Germany) and Silvia Beyer (Ober-Ramstadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A one-pot synthesis of polymerizable and acyclic urea (meth)acrylates, preferably mono(meth)acrylates, can be performed via in-situ synthesis of urea alcohols or amines followed by direct reaction with a (meth)acrylate reactive diluent. The urea alcohol/amine is obtained from isocyanates and alcohols, amines, or hydroxyamines. Subsequently, the reaction with the (meth)acrylate reactive d...