释义 |
bu·tyl·ene \ˈbyüd.əlˌēn, -ütəl-\ noun (-s) Etymology: International Scientific Vocabulary butyl + -ene 1. : any of three isomeric flammable easily liquefiable gaseous hydrocarbons C4H8 of the ethylene series obtained usually by the cracking of petroleum and converted into gasoline by polymerization: a. : the normal compound CH2 = CHCH2CH3 used in making butadiene — called also alpha-butylene, 1-butene b. : the normal symmetrical compound CH3CH = CHCH3 occurring in cis and trans forms used in making butadiene — called also beta-butylene, 2-butene c. : isobutylene 2. : any of four isomeric alkylene radicals C4H8 (as tetramethylene) derived from normal butane |