US Patent Issued to DOW TORAY on July 29 for "Polyether-polysiloxane block copolymer composition, foam stabilizer and method for producing polyurethane foam" (Japanese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,537, issued on July 29, was assigned to DOW TORAY Co. LTD. (Tokyo).

"Polyether-polysiloxane block copolymer composition, foam stabilizer and method for producing polyurethane foam" was invented by Seiki Tamura (Ichihara, Japan), Son Thanh Phan (Ichihara, Japan) and Hiroyuki Inagaki (Ichihara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A manufacturing method for a polyether polysiloxane block copolymer composition that can avoid the use and incorporation of aromatic hydrocarbon-based solvents is provided. The manufacturing method is generally easy on an industrial production scale. The manufacturing method includes a step of obtaining a pol...