1. Plural of isobutylene; unsaturated hydrocarbons with four carbon atoms and one double bond, used in the production of synthetic rubber and other industrial chemicals.
Usage: chemistry; technical; also called 2-methylpropene or isobutene

Examples

• Isobutylenes are important monomers in the synthesis of butyl rubber.
• The petrochemical plant produces isobutylenes as intermediates for polymer manufacturing.
• Isobutylenes can be polymerized to create various industrial plastics.
• The chemical structure of isobutylenes contains a carbon-carbon double bond.
• Isobutylenes are derived from the cracking of crude oil and natural gas.