US Patent Issued to SHIN-ETSU CHEMICAL on July 7 for "Hydrophilic group-modified organopolysiloxane and production method thereof" (Japanese Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,031, issued on July 7, was assigned to SHIN-ETSU CHEMICAL Co. LTD. (Tokyo).

"Hydrophilic group-modified organopolysiloxane and production method thereof" was invented by Koichiro Kobayashi (Miyota-machi, Japan) and Yuichi Mukawa (Tamamura-machi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrophilic group-modified organopolysiloxane represented by the following general formula (1) containing 0.03 mol % or less of silanol groups at siloxane chain terminals, and 15 ppm or less of propionaldehyde after the organopolysiloxane is mixed with pure water at a mass ratio of 1:1 and mixed at 50deg C. for 24 hours. As a result, the present invention...