… Polymers of propylene or of other olefins, in primary forms. …
Explanatory notes
… 39.02 ‑ Polymers of propylene or of other olefins, in primary forms. 3902.10 ‑ Polypropylene 3902.20 ‑ … except ethylene. The important polymers of this heading are polypropylene, polyisobutylene and propylene copolymers. … Chapter. The general physical properties of polypropylene are similar to those of high‑density polyethylene. …