Sartomer Co., Exton, PA, has appointed J.H. Calo Co. Inc., Dowd and Guild Inc. and Brenntag Mid-South/Brenntag Southeast distributors of Sartomer's Norsolene line of hydrocarbon resins in the northeastern, western and southeastern United States. Ashland Chemical Co. will continue as a Norsolene distributor in Missouri, Iowa and Kansas. Norsolene resins are used as processing aids and tackifying resins in polymer compounding, adhesives, ink, sealants, and other applications.