HOUSTON, Aug. 10, 2011 /PRNewswire/ — Kraton Performance Polymers, Inc. (NYSE: KRA), a leading global producer of styrenic block copolymers or “SBCs,” is pleased to announce the completion of its multi-million dollar capital investment projects to support sales growth in Cariflex isoprene rubber, a pure, high performance alternative to natural rubber. (Photo: http://photos.prnewswire.com/prnh/20110810/DA49622) Kraton […]