Hexion Inc. (“Hexion”) and HüttenesAlbertus Chemische Werke GmbH (“HA”) today announced that Hexion has sold its 50% interest in HAInternational, LLC (“HAI”), a joint venture serving the North American foundry industry, to its joint venture partner HA-USA, Inc., an entity controlled by HA. HAI is the market leading manufacturer and supplier of foundry resin systems, resin coated sand for shell molding and…