butylene

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butylene

Any one of several hydrocarbons with a formula C4H8, of the ethylene series, either as one of seven straight chain isomers or one of three branched chains. They are gases at room temperature, but easily liquefied by raising the pressure or lowering the temperature.
References in periodicals archive ?
The mixture includes propane, propylene, butane, butylenes and condensate.
Unit capacity will be 83 KBD and will utilize mixed butylenes and isobutane feedstocks.
Specifically, Raytheon will be responsible for a complex that consists of a fluid catalytic cracker for converting heavy petroleum into lighter products such as liquefied petroleum gas (LPG), propylene, and gasoline; units for sweetening of LPG and gasoline; a plant for producing MTBE (methyl tertiary butyl ether), a product that boosts the octane rating of gasoline; an alkylation unit, which produces high octane gasoline-type material from butylenes and isobutane; and utility systems for the complex.