… Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, … to this Chapter, not elsewhere specified or included, in primary forms. …
Explanatory notes
… 39.11 ‑ Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, … constitute a group of resins, not highly polymerised, made by polymerising more or less impure fractions obtained, … units of between 3 and 4. The products are used in the manufacture of paints and varnishes. (b) Polyisocyanurates …