About: http://webisa.webdatacommons.org/66349793

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	Such chain extenders and crosslinkers (b) are used for modifying the mechanical properties, in particular the hardness, of the PU elastomers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com