… Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones and other products specified in Note 3 to this Chapter, not elsewhere specified or included, in primary …
Explanatory notes
… resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones and other products specified in Note 3 to this Chapter, not elsewhere specified or included, … In polysulphides each sulphur atom is bound on both sides by carbon atoms, as opposed to the thioplasts of …