Westlake Chemical Corp. /zigman2/quotes/204882520/composite WLK +1.48% on Wednesday said it agreed to buy Hexion Inc.'s global epoxy business for about $1.2 billion. The Rotterdam, Netherlands business rang up $1.5 billion sales in the 12 months ended Sept. 30. Hexion Epoxy operates on three continents with eight manufacturing plants and five research and development labs in Asia, Europe and the U.S. Shares of Westlake Chemical are up 22.5% this year, compared to a rise of24.9% by the S&P 500.


