Dow Performance Materials has named Carlos Silva Lopes Strategic Marketing Director for the business.

Courtney Longacre has joined Gulf Coast Chemical Corp.

The Board of Directors of Ecology Coatings Inc. has elected Jim Juliano as its Chairman.

DYMAX Corp. has appointed Tony ­Ieraci.

David Henke has joined Archway Sales Inc. as a Credit Manager.

Watson Standard has appointed David G. Grant.

J. Rich Alexander, PPG Executive Vice President, has been assigned to lead all of PPG’s architectural coatings businesses.

Arkema’s acquisition from Total of coatings resins from both Cray Valley and Cook Composites and Polymers and the photocure resins of Sartomer is now final.

The Sherwin-Williams Co. has purchased U.K.-based Leighs Paints.

Royal DSM N.V. has successfully acquired a 51-percent stake in AGI Corp. of Taiwan (AGI).