ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,030, issued on April 15, was assigned to Henkel AG & Co. KGaA (Duesseldorf, Germany).
"Metal pretreatment compositions containing phenalkamine compounds" was invented by Donald R. Vonk (Clinton Township, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A conversion coating composition for treating a metal surface contains one or more Group IV metal ions, such as titanium, zirconium and/or hafnium metal ions, and one or more phenalkamine compounds, such as a Mannich addition product of cardanol, formaldehyde and a polyamine. The conversion coating composition is an aqueous acidic solution or dispersion. Metal surfaces contacted with the conversion...