About: viscosity index improver

Premodifier: viscosity index
Head noun: improver

Same concepts
http://dbpedia.org/resource/Viscosity_index

Broader concepts

label	provenance	confidence
additive	isap:61350099	0.720888
other additive	isap:61350105	0.717592
dispersant	isap:181346463	0.466824
greater	isap:341116536	0.250777

Narrower concepts

label	provenance	confidence