<http://schema.org/description>
"WEB EXCLUSIVE: Metabolix, Inc., Cambridge, Mass., has developed a series of biobased PHA (polyhydroxyalkanoate) copolymers that act as plasticizers, impact modifiers, and processing aids for rigid and flexible PVC."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ptonline.com/products/materials-biobased-pha-enhances-processing-performance-of-pvc>