alkene

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alkene

(ăl`kēn), any of a group of aliphatic hydrocarbons whose molecules contain one or more carbon-carbon double bonds (see chemical bondchemical bond,
mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the formation of an aggregate with sufficient stability to be regarded as an
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). Alkenes with only one double bond have the general formula CnH2n. In the International Union of Pure and Applied Chemistry (IUPAC) system of chemical nomenclature, the name of an alkene is derived from the name of the corresponding alkanealkane
, any of a group of aliphatic hydrocarbons whose molecules contain only single bonds (see chemical bond). Alkanes have the general chemical formula CnH2n+2.
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 by replacing the -ane alkane suffix with -ene and, if necessary, adding a prefix to indicate the location of the double bond in the molecule. The IUPAC name of the simplest alkene, H2C=CH2, is ethene, which is derived from ethane. Propene is related to propane. Two alkenes, 1-butene and 2-butene, are related to butane; these two compounds, which differ in the location of the double bond in their molecules, are structural isomersisomer
, in chemistry, one of two or more compounds having the same molecular formula but different structures (arrangements of atoms in the molecule). Isomerism is the occurrence of such compounds. Isomerism was first recognized by J. J. Berzelius in 1827.
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. In addition to these IUPAC names, many of the alkenes have common names, e.g., ethene is called ethylene and propene propylene. The alkenes as a group are sometimes called the ethylene series. Since the carbon-carbon double bond is sometimes called an olefinic linkage, the alkenes are sometimes called the olefins. Many of the reactions in which alkenes take part involve the cleavage of half the carbon-carbon double bond and subsequent formation of two single bonds, one to each of the adjacent carbon atoms. Such reactions include hydrogenation, with the formation of an alkane, and hydration, with the formation of an alcohol.

alkene

[′al‚kēn]
(organic chemistry)
One of a class of unsaturated aliphatic hydrocarbons containing one or more carbon-to-carbon double bonds.

alkene

a. any unsaturated aliphatic hydrocarbon with the general formula CnH2n
b. (as modifier): alkene series
References in periodicals archive ?
g], reflecting the flexible nature of the alkenyl side chain.
Internal size, either alkenyl succinic anhydride (ASA) or alkyl ketene dimer (AKD), is difficult to retain when used alone.
Woodflour was esterified in order to improve its compatibility with the matrix using a commercial alkenyl succinic anhydride (ASA, Lasar 2019 CE, Akzo Nobel).
The report includes the following aspects: Status quo, supply and demand, competition pattern and development trends of China polyether monomer industry; Impact of supply, demand and prices of ethylene oxide, methanol, alkenyl alcohols, acrylic acid and other upstream materials on Chinese polyether monomer market; Influence of polycarboxylate water reducing agent, surfactant and other downstream industries on Chinese polyether monomer market; operation and water reducing agent business of three Chinese polycarboxylate water reducing agent enterprises.
The alkenyl oxazoline used was obtained from ANGUS Chemical and had the following structure:
Key statement: Comprising (A) a straight-chain fluoropolyether having at least two alkenyl groups and a perfluoropolyether structure, (B) an organosilicon compound having at least two Sill groups, (C) a perfluoroparaffin or derivative and (D) a hydrosilylation catalyst cures into a product that exhibits solvent resistance, chemical resistance, weather resistance, water repellency, oil repellency and heat resistance, and is improved in mold release and compression set.
The approach involved holding the mechanicals in the best configuration currently known, increasing the sheet HST sizing, and an alkenyl succinic anhydride (ASA) increase with a first pass retention increase.
Q: I recently learned about a commercially available product called alkenyl succinic anhydrides (ASA's).
Other applications for MA include agricultural chemicals, malic acid, fumaric acid, lube oil additives, alkenyl succinic anhydrides, reactive plasticizers, sulfosuccinic acid esters, and a number of other chemicals.
Studies characterizing the reactions of alkenyl radicals with quinone-diimines were published in the late 1970s (ref.
Process Utilizing Alkenyl Carboxylate Crosslinkers, U.