US Patent Issued to CHEMETALL on Dec. 9 for "Polyurea coating systems as sealants for the exterior of fuel tanks" (German Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,322, issued on Dec. 9, was assigned to CHEMETALL GMBH (Frankfurt, Germany).

"Polyurea coating systems as sealants for the exterior of fuel tanks" was invented by Michael Kraemer (Frankfurt am Main, Germany), Christian Bruchertseifer (Oldenburg, Germany) and Peter Bons (Frankfurt am Main, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a 2K coating system consisting of two components (A) and (B) being separate from each other, where (A) includes at least one constituent (a1) containing at least one aromatic moiety and bearing on average at least two primary and/or secondary amino groups, where (B) includes at least one const...