During his 19-year career at Dow, Baer held information technology leadership positions for the company in the United States, Switzerland, France, Spain and the Asia/Pacific region. Baer began his career in finance with IBM before joining Dow.
Baer succeeds David W. Smith, who retired this month.
A native of Switzerland, Baer, 44, earned a bachelor of science degree in business administration at the University of St. Gall, Switzerland.
Baer and his wife, Fabiola, have three children and will reside in Mars, Pa.
Pittsburgh-based PPG is a global supplier of coatings, glass, fiber glass and chemicals, with 120 manufacturing facilities and equity affiliates in 24 countries. Sales in 2001 were $8.2 billion.