About: http://webisa.webdatacommons.org/448191865

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	BACKGROUND OF THE INVENTION In recent years, polymers and plastics have become increasingly popular and important materials for making various types of articles.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com