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Butene, also known as butylene, is an alkene with the formula C4H8. The word butene may refer to any of the individual compounds. They are colourless gases that are present in crude oil as a minor constituent in quantities that are too small for viable extraction. Butene is therefore obtained by catalytic cracking of long-chain hydrocarbons left during refining of crude oil. Cracking produces a mixture of products, and the butene is extracted from this by fractional distillation.[1]
Butene can be used as the monomer for polybutene, but this polymer is more expensive than alternatives with shorter carbon chains such as polypropylene. Polybutene is therefore used in more specialized applications. Butenes are more commonly used to make copolymer (mixed with another monomer such as ethylene).
Butenes are major constituents of raffinates, the C4 fractions in oil processing. The raffinates containing butadiene are considered carcinogenic and mutagenic.[2] They can be used as feedstocks for further processing, or used as industrial fuel. Their mixing into LPG for nonindustrial uses sometimes occurs but is generally prohibited.[3]
^Geilen, Frank M.A.; Stochniol, Guido; Peitz, Stephan; Schulte-Koerne, Ekkehard (2014). "Butenes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a04_483.pub3. ISBN 978-3527306732.
^Safety Data Sheet pcs.com.sg April 2017
^"Karcinogenní plyn na českém trhu není, sdělila asociace. Inspekce zmírnila své zjištění | Náš REGION".
Butene, also known as butylene, is an alkene with the formula C4H8. The word butene may refer to any of the individual compounds. They are colourless...
and which, mainly consists of isobutylene 40~50 wt% and cis- or trans-2-butene 30~35 wt%. Normally C4R1 is a side product in 1,3-butadiene plant and feed...
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alkene. It can be prepared by base-catalyzed isomerization of 2,3-dimethyl-1-butene. Another route involves direct dimerization of propylene. It can also be...
hydrovinylation to give n-butenes using processes licensed by Lummus or IFP. The Lummus process produces mixed n-butenes (primarily 2-butenes) while the IFP process...
isolated from the olefin or refinery butene stream before the reaction, as separating the ethers from the remaining butenes is simpler. Isobutylene can also...
ethylene and 2-butenes. Rhenium and molybdenum catalysts are used. Nowadays, only the reverse reaction, i.e., the conversion of ethylene and 2-butene to propylene...
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following possible structural isomers: 2,3-Dimethyl-1-butene 3,3-Dimethyl-1-butene 2,3-Dimethyl-2-butene This set index article lists chemical compounds articles...
bready, fruity, nutty, berry. Pentanal is obtained by hydroformylation of butene. Also C4 mixtures can be used as starting material like the so-called raffinate...
formula C4H8 (molar mass: 56.11 g/mol) may refer to: Butenes (butylenes) 1-Butene, or 1-butylene 2-Butene Isobutylene Cyclobutane Methylcyclopropane This set...
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Polybutene is an organic polymer made from a mixture of 1-butene, 2-butene, and isobutylene. Ethylene steam cracker C4s are also used as supplemental feed...
route to such fractions is the alkylation reaction between iso-butane and 1-butene, which forms iso-octane. Octane is commonly used as a solvent in paints...
n-butane route but competed with aviation gasoline for available butene molecules (butenes were plentiful thanks to catalytic cracking). The USSRP constructed...
Names Preferred IUPAC name 3,3-Dimethylbut-1-ene Other names 3,3-Dimethyl-1-butene Identifiers CAS Number 558-37-2 3D model (JSmol) Interactive image ChemSpider...
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