1 | Polymers of propylene or of other olefins, in primary forms. | |
2 | The two main classes of petrochemicals are olefins and aromatics. | |
3 | But he disagreed with the argument that type-2 alkenes in the environment are part of the story. | |
4 | In this paper, the carbonylation has been studied of olefins in different solvent systems. | |
5 | These fabrics are made of such fibers as polypropylene, olefin, polyester, nylon, and acrylic. |