US Patent Issued to Bostik on July 21 for "Amorphous copolyester resins for use as a cold seal adhesive, coating compositions" (Wisconsin Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,794, issued on July 21, was assigned to Bostik Inc. (Wauwatosa, Wis.).

"Amorphous copolyester resins for use as a cold seal adhesive, coating compositions" was invented by Deepa Puthanparambil (Wauwatosa, Wis.), Tatiana Kretlow (Wauwatosa, Wis.), Joshua T. Harju (Wauwatosa, Wis.) and Marie Hut (Wauwatosa, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of adhering substrate surfaces to one another comprises applying a copolyester resin mixture to the surfaces and contacting the surfaces with one another in the absence of heat to form a cold seal. The copolyester resin may be sulfonated and the reaction product of (a) at least two diols ...