ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,786, issued on June 10, was assigned to Johns Manville (Denver).
"Urea-glyoxal crosslinking compounds for phenolic binder compositions" was invented by Kiarash Alavi (Littleton, Colo.) and Ameya Natu (Highlands Ranch, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Binder compositions are described that include a phenol, a urea compound, formaldehyde, and at least one cyclic urea-dialdehyde compound. The cyclic urea-dialdehyde compound forms crosslinking bonds between polymers of phenol-urea-formaldehyde when the binder composition is cured. Also described are methods of making fiberglass insulation products using the above-described binder com...