ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,388, issued on April 29, was assigned to HANWHA SOLUTIONS Corp. (Seoul, South Korea).

"1,5,9-cyclododecatriene composition and continuous preparation method therefor" was invented by Seonghoon Hyeong (Daejeon, South Korea), Jinho Park (Daejeon, South Korea) and Namjin Jang (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a continuous preparation method of cyclododecatriene including: preparing a reaction composition by mixing butadiene, a main catalyst, and a co-catalyst with a toluene solvent; and allowing the reaction composition to react at a reaction pressure higher than a vapor pressure of the b...