US Patent Issued to Kraton on March 17 for "Associative rheology modifier composition and methods for making thereof" (Texas, Georgia Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,415, issued on March 17, was assigned to Kraton Corp. (The Woodlands, Texas).

"Associative rheology modifier composition and methods for making thereof" was invented by Jason Tian (Houston), Ruidong Ding (Houston), Donna Rucker (Savannah, Ga.) and Chad Reiter (Savannah, Ga.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An associative rheology modifier is obtained by coupling of a rheology modifier precursor with a coupling agent. The rheology modifier precursor is formed by reacting a rosin acid with a polyether at a mole ratio of the rosin acid to the polyether of less than2:1, at a temperature from 180-350deg C. and in the presence of an acid ca...