ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,750, issued on Feb. 10.
"Method for the diimide hydrogenation of emulsified unsaturated polymers" was invented by Dane K. Parker (Coshocton, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "The diimide hydrogenation of unsaturated elastomers in latex utilizing hydrazine and hydrogen peroxide or oxygen, is a metal-catalyzed process. Copper ion has been found to be the most superior catalyst for this reaction, requiring an extremely low concentration for optimal results. Generated diimide efficiently hydrogenates the polymer olefinic unsaturation while generating water and nitrogen as byproducts. With a falling hydrazine concentration during the hy...