ALEXANDRIA, Va., April 9 -- United States Patent no. 12,269,976, issued on April 8, was assigned to H.B. Fuller Co. (St. Paul, Minn.).
"Flame resistant hotmelt adhesive" was invented by Joaquim Serra (Oporto, Portugal).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hotmelt adhesive composition comprising 15 to 45% by weight of at least one tackifying resin, and 20 to 60% by weight of a mixture of at least one single-site catalyzed propylene homopolymer (A) and at least one propylene copolymer (B), wherein the propylene homopolymer (A) has a weight average molecular weight of 20,000 to 145,000, the propylene copolymer (B) has an ethylene comonomer content of 5 to 25% by weight, and the weight ratio of propyl...