ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,234, issued on March 31, was assigned to BOSTIK SA (Colombes, France).
"Adhesive compositions, layered articles and photovoltaic sheets" was invented by Hengshi Zhou (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "An adhesive composition which comprises a resin component (A) comprising a polyester polyol, a hydrogenated epoxy, a silane, and an optional organic solvent; and a hardener component (B) comprising an aliphatic polyisocyanate and/or an alicyclic polyisocyanate; the adhesive composition being substantially free of aromatic rings. The polyester polyol is prepared by reacting a poly basic acid and a polyalcohol, and the polybasic ac...