Assertion: polypropylene | /r/HasProperty | produced
Facets:
value: by subjecting the monomer propylene
type: MANNER
Source sentences:
text: polypropylene, because of its lower density is used for molding parts with lower weight and more parts of a certain mass of plastic can be produced.
text: Polypropylene is manufactured by subjecting the monomer propylene to pressure and heat in the presence of a catalyst.