A family of plastics based upon the additional polymerization of ethylene polypropylene, butylene and other vinyls. Polyolefins are also used as high speed laminated flat cable insulations.

A group of unsaturated hydrocarbons of the general formula CnH2n, and named after the corresponding paraffin by the addition of 'ene' or 'ylene' to the stem.

polymers composed of unsaturated hydrocarbons, extracted from petroleum or natural gas