Japan's Sumitomo Chemical and Zeon Corporation are setting up a joint venture company to facilitate the integration of both firms' solution styrene butadiene rubber (S-SBR) businesses. The resulting company will be called ZS Elastomer Co. Ltd. (ZSE) and will be 60 per cent owned by Zeon Corporation, with Sumitomo Corporation holding the remainin 40 per cent share. Sumitomo Chemical and Zeon will each succeed the rights and obligations of the sales and R&D functions their respective S-SBR business to ZSE.