US Patent Issued to DS SPECIALTY CHEMICALS S.A.E. on June 9 for "Phosphoric acid esters, method of synthetizing them and use thereof as dispersants" (Egyptian Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,829, issued on June 9, was assigned to DS SPECIALTY CHEMICALS S.A.E. (6th of October City, Egypt).

"Phosphoric acid esters, method of synthetizing them and use thereof as dispersants" was invented by Eslam Moustafa (6th of October City, Egypt) and Effat Aboulela (6th of October City, Egypt).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention concerns a phosphoric acid ester of Formula (I) or (II), wherein: A, B and R represents an aliphatic, cycloaliphatic and/or aromatic moiety; Q represents -CH2-, -O- or -COO-; n+m is inferior to 3; and X+Y is less than 7, and wherein the phosphoric acid ester has an average molecular weight Mn of 70 to 10,...