01 Apr 2014 --- WACKER will globally increase the prices of food-grade polyvinyl acetate (PVAc) by an average 12 percent. The price increase will be effective immediately or as otherwise allowed by individual contract terms. Despite continued efforts to optimize cost structures and productivity, persistently rising energy and raw material costs make this step inevitable. The price increase will ensure WACKER’s high standards for product quality, product safety and product service.