US Patent Issued to Saudi Arabian Oil on Jan. 27 for "Copolymers of (3-acrylamidopropyl)trimethyl ammonium chloride as corrosion inhibitor intermediate" (Saudi Arabia Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,560, issued on Jan. 27, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Copolymers of (3-acrylamidopropyl)trimethyl ammonium chloride as corrosion inhibitor intermediate" was invented by Nayef M. Alanazi (Dhahran, Saudi Arabia) and Muhammad Imran Ul-haq (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A block copolymer including blocks of the general formula:where R1 is a cyclic compound having 5 to 8 atoms; R2, R3, and R4 is a linear or cyclic alkyl group; x is a molar fraction from 0.1 to 0.9; y is a molar fraction from 0.1 to 0.9; a sum of x+y is 1; z is from 1 to 10; and the block copolymer has a molecular we...