<http://webisa.webdatacommons.org/431355611>	<http://www.w3.org/ns/prov#value>	"Solid state polymerization (SSP) is conducted under vacuum or in a stream of purge gas such as nitrogen." .
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<http://webisa.webdatacommons.org/431355611>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .