US Patent Issued to Dow Global Technologies on June 24 for "Polyamide foam preparation" (Chinese, American, Swiss Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,335, issued on June 24, was assigned to Dow Global Technologies LLC (Midland, Mich.).

"Polyamide foam preparation" was invented by Jinliang Yan (Shanghai), Richard Tien Hua Chou (Hockessin, Del.), Karlheinz Hausmann (Horgen, Switzerland) and Zhongyu Wang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a foamed composition comprising 55 to 98 wt. % of polyamide, and 2 to 45 wt. % of ionomer comprising a zinc neutralized ethylene acid copolymer. The zinc neutralized ethylene acid copolymer is the polymerized reaction product of ethylene monomer, monocarboxylic acid monomer, and unsaturated dicarboxylic acid monomer, and 30...