Southern Clay Products Inc., Gonzales, TX, announced several changes in its North American distribution network involving rheological additive products for coatings, ink and other industrial markets. Effective April 1, T.H. Hilson Co., Wheaton, IL, becomes the sole distributor for Southern Clay in the Chicago metropolitan area, northern Illinois, southern Wisconsin, and northern Indiana. With the changes, T.H. Hilson will represent Southern Clay in all of Indiana, Illinois and Wisconsin. Effective April 15, Dowd and Guild Inc., San Ramon, CA, becomes sole distributor for Southern Clay in the Pacific Northwest, expanding Dowd & Guild’s territory to the entire U.S. West Coast. Also effective April 15, Lintech International, Macon, GA, becomes Southern Clay’s sole distributor in Tennessee, expanding Lintech’s territory to all southeastern states except Florida.