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Isobutylene (or 2-methylpropene) is a hydrocarbon with the chemical formula (CH 3) 2 C=CH 2. It is a four-carbon branched alkene (olefin), one of the four isomers of butylene . It is a colorless flammable gas, and is of considerable industrial value.
Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" or polyisobutene, (C 4 H 8) n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is ...
Isobutylene can be produced through a variety of methods. n-butane can be isomerized into isobutane which can be dehydrogenated to isobutylene. [7] In the Halcon process, t-Butyl hydroperoxide derived from isobutane oxygenation is treated with propylene to produce propylene oxide and t-butanol. The t-butanol can be dehydrated to isobutylene.
Isobutylene: A colorless gas that is used to produce plastics, packaging materials and resins. Exposure can cause symptoms such as dizziness and headache, ...
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 for polybutene. It is similar to polyisobutylene (PIB), which is produced from essentially pure isobutylene made in a C4 complex of a major refinery. The presence of isomers other than ...
Butene, also known as butylene, is an alkene with the formula C 4 H 8.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.
The reaction conditions for the synthesis of each type of isobutylene product vary depending on the desired molecular weight and what type(s) of monomer(s) is used. The conditions most commonly used to form low molecular weight (5–10 x 10 4 Da) polyisobutylene are initiation with AlCl 3, BF 3, or TiCl 4 at a temperature range of −40 to 10 ...
Polyisobutene (polyisobutylene) is a class of organic polymers prepared by polymerization of isobutene.The polymers often have the formula Me 3 C[CH 2 CMe 2] n H (Me = CH 3).They are typically colorless gummy solids.