About: http://webisa.webdatacommons.org/138108187

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Thus, there is an ongoing need for catalysts capable of producing stereoregular polypropylene compositions with differing physical properties such as molecular weight and melting points.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com