You know what it looks like… but what is it called?
TAKE THE QUIZ“indene resin”
The following 2 entries include the term indene resin.
coumarone-indene resin
noun: any of a group of thermoplastic resins obtained by polymerization of mixtures of coumarone and indene (as those obtained from solvent naphtha) and used chiefly in coatings, paints, printing ink, and asphalt tile
paracoumarone-indene resin
nounLove words? Need even more definitions?
Merriam-Webster unabridged