ASHLAND INC. - The specialty chemical company in Dublin, Ohio, named David Jones bioproducts director.
BOSCH REXROTH CORP. - The drives and motor controls firm in Hoffman Estates, Ill., named Amy Defayette a product marketer for its VarioFlow conveyors, in its Buchanan, Mich., office.
CEREPLAST INC. - The bioresin maker in Hawthorne, Calif., named Thomas Bash engineering and production vice president.
CRANE CO. - The engineered industrial products manufacturer in Stamford, Conn., named Thomas Craney president of Crane Composites Group.
D-M-E CO. - The mold maker in Madison Heights, Mich., named Craig Messerknecht vice president of marketing and global product management.
DOW CHEMICAL CO. - Mike Gambrell, executive vice president for the resin maker in Midland, Mich., was named to the U.S.-India Business Council board of directors in Washington.
GEORGIA GULF CORP. - The pipe and profile extruder in Atlanta made several changes in its building and home improvement operations, as part of its integration of Royal Group: Art Ramey was named president of sales and marketing; Brandon Nadler, general manager of U.S. operations; and Peter Kotiadis, vice president of design and product development.
GRACE DAREX PACKAGING TECHNOLOGIES - The supplier of sealants and coatings for cans and closures in Cambridge, Mass., named Enrique Manjarrez market development manager for the Americas.
KRATON POLYMERS LLC - The specialty chemicals company in Houston named Michael Oberkirch vice president and general manager for its packaging and films business.
M.C. GILL CORP. - The composite-products maker in El Monte, Calif., named Gabriel Esparza human resources director.
METABOLIX INC. - The bioresin maker in Cambridge, Mass., announced that its chairman, Jay Kouba, will assume the role of chief executive officer and president, succeeding James Barber, who resigned.
OXFORD FINANCIAL GROUP LTD. - The financial adviser in Indianapolis named Rick Davis a managing director.
PLASTICS PIPE INSTITUTE INC. - The trade association in Irving, Texas, named Bruce Kuffer manager for polyethylene market development for its municipal and industrial division.
POLYONE CORP. - The compounder in Avon Lake, Ohio, named Gina Rendar marketing and product management director and Matthew Borowiec regional sales manager, both for engineered materials.
POLYPIPE INC. - The polyethylene pressure pipe maker in Gainesville, Texas, named J.G. Ball interim chief executive officer and interim president, succeeding Dave Fordyce, who resigned.
QUICKPARTS INC. - The custom manufacturer in Atlanta named Randall Barko to the board. Barko is former chief executive officer and president of Nypro Medical Products Group.
RUMBER MATERIALS INC. - The maker of composite material from recycled tires and scrap plastic in Muenster, Texas, named Keith Melville chief operating officer.
SLEEVECO INC. - The printer and converter of stretch and shrink sleeve labels in Dawsonville, Ga., named Martin Wilson president. David Johnson remains chairman and chief executive officer.
SMITHERS RAPRA TECHNOLOGY - The provider of analytical, testing and research services in Shrewsbury, England, named James Dowey vice president and managing director, succeeding Hugh Pace, who left the firm.
STERLING - The auxiliary equipment maker in New Berlin, Wis., named Brad Wiley systems and contracting manager.
TECH MOLD INC. - The toolmaker in Tempe, Ariz., named Jerry Seidelman a salesman.
UNITED PLASTICS GROUP INC. - The injection molder in Oak Brook, Ill., named Terrence Hamm quality assurance director.
XALOY INC. - The screw and barrel maker in New Castle, Pa., named Tim Womer chief technology officer.
AEC INC., an auxiliary equipment maker in Schaumburg, Ill., named Robert Butts Eastern regional sales manager. ... APPLIED MANUFACTURING TECHNOLOGIES INC., a consulting firm in Orion, Mich., named Jordan Merhib sales manager. ... EUROTHERM INC., an instrumentation maker in Leesburg, Va., named Mikael Le Guern marketing manager for power products. ... EXTRUSION DIES INDUSTRIES LLC, a flat-die maker in Chippewa Falls, Wis., named Tom Johns product manager for slot die coating systems. ... TEKNOR APEX CO., a custom PVC compounds maker in Pawtucket, R.I., named Paul Valiukas a vinyl division sales representative.