Isobutene

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Related to Isobutene: isobutylene

isobutene

[¦ī·sō′byü‚tēn]

(organic chemistry)

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Isobutene

isobutylene, the unsaturated hydrocarbon (CH₃)₂C=CH₂, a colorless gas. Boiling point, — 6.9°C; density, 0.6266 g/cm³ (at -6.6°C); 1.3814. Isobutene is made industrially by dehydrogenating isobutane over oxide catalysts (forexample, Cr₂0₃ on A1₂0₃) at 500°-600°C or by dehydrating isobutyl alcohol. The ability of isobutene to polymerize and copolymerize is used in industry in making polyisobutene and butyl rubber. Isobutene is also used to alkylate aromatic compounds and isobutane in making isooctane.

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The global isobutene market demand was estimated at 11.59 million tons in 2015 and is expected to reach 16.23 million tons by 2024, growing at a CAGR of 3.9% from 2016 to 2024

Isobutene Market Is Expected To Touch New Height Of USD 30.71 Billion by 2024: Grand View Research, Inc

"Renewable isobutene is a widely-used building block for cosmetic applications and we are excited by the opportunities it presents for new bio-based ingredients to address the needs of niche markets.

DAVID BECKHAM AND L'OREAL LUXE UNVEIL HOUSE 99

That effect is also observed for single substances like isobutene, bromomethane, and acetone.

How sterilization of primary packaging influences the results of E&L studies: as the demands that are being placed on the quality and stability of medications continue to increase, the interactions that take place between the primary packaging container and filled drug product are becoming increasingly important

Devillers, "Evaluation of the role played by bismuth molybdates in [Bi.sub.2][Sn.sub.7][O.sub.7]-Mo[O.sub.3] catalysts used for partial oxidation of isobutene to methacrolein," Applied Catalysis A: General, vol.

Synthesis and characterization of pyrochlore [Bi.sub.2][Sn.sub.2][O.sub.7] doping with praseodymium by hydrothermal method and its photocatalytic activity study

In this context, it is possible to note that South Africa coal presents a maximum value of gas emission at about 600[degrees]C, while Sulcis coal shows a maximum at around 400[degrees]C, releasing acetone and isobutene. This is in agreement with spectral changes observed for their residuals obtained in the previous investigation [35].

FT-IR investigation of the structural changes of sulcis and South Africa coals under progressive heating in vacuum: correlation with volatile matter

These include compressors, separators, pumps and heat exchangers for 13 compressor stations that work to pump product to a cryogenic plant where the product is separated into butane, isobutene, ethane, methane and natural gas.

Global PTM Completes Successful Oracle Implementation for MarkWest Energy

As we can see, the heat capacity depends on mass flow capacity of refrigerant R600a (isobutene) [g.sub.cd].

Influence of surrounding space on heat transfer effectiveness of refrigerator's condenser/Buitinio saldytuvo virbalini kondensatoriu supancios erdves poveikio silumos mainams tyrimas

The three hydrocarbon refrigerants approved as acceptable substitutes, with use conditions, are propane (R-290), isobutene (R-600), and a blend of ethane, propane, butane and isobutene known as R-441a.

3 hydrocarbons approved for household appliances

RS Butyl rubber is essentially poly(isobutene) with two mol per cent of isoprene in the polymer chain.

Reinventing rubber: LANXESS AG's newest research facility in Ontario is uncovering new uses for an old material

1,3,5-trimethylbenzene, 1,2,4-trimethylbenzeneand sec-butylbenzene, 2-butanone, ethylene, acetylene, propene, isobutene. 1-butene.

Chemical properties of air pollutants and cause-specific hospital admissions among the elderly in Atlanta, Georgia

Together with Colorado-based Gevo Inc, Lanxess is developing isobutene from renewable resources starting with corn.