Perstorpannounced yesterday its German site in Bruchhausen produced and sold in May for the first time its Voxtar renewable pentaerythritol, introduced in 2010 as the first renewable penta. The polyol can be used as a chemical building block in aviation turbine oils, transformer oils and refrigeration lubricants. Oil Libya Africa Energy, which markets lubricants and fuels from Morocco to Kenya, has changed its name to Ola Energy.