olefin

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olefin

(ō`ləfĭn) or

olefin series:

see alkenealkene
, any of a group of aliphatic hydrocarbons whose molecules contain one or more carbon-carbon double bonds (see chemical bond). Alkenes with only one double bond have the general formula CnH2n.
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olefin

[′ō·lə·fən]
(organic chemistry)
Cn H2 n A family of unsaturated, chemically active hydrocarbons with one carbon-carbon double bond; includes ethylene and propylene.
(textiles)
A manufactured fiber in which the fiber-forming substance is any long-chain synthetic polymer composed of at least 85% by weight of ethylene, propylene, or other olefin units except amorphous (noncrystalline) polyolefins qualifying as rubber.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

olefin

A lightweight, high-strength, long-chain polymeric material having very good abrasion resistance; especially used in indoor-outdoor carpeting.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The ability of olefinic POSS to serve as a crosslinking coagent in peroxide vulcanization of f-HNBR has been demonstrated.
By hydrogenating olefinic compounds, in the FID chromatogram the peaks of alkenes and unknown compounds disappeared and that of n-alkane became more pronounced.
Isobutylene (C4H8): A branch-chain olefinic hydrocarbon recovered from refinery or petrochemical processes, which is gaseous at standard temperature and pressure.
108-110[degrees]C; IR (KBr) [gamma]:1599 (C=N), 2191 (C=N) [cm.sup.-1]; [sup.1]HNMR (DMSO-[d.sub.6]) [delta]: 1-1.83 (m, 6H, 3xC[H.sub.2]), 2.08 (m, 2H, C[H.sub.2]), 3.78 (s, 12H, 4xOC[H.sub.3]), 7.12-7.6 (m, 7H, Ar-H and 1H, CH- olefinic), 9.68 (s, 2H, N[H.sub.2]).
The disappearance of peaks at [delta] 3.5 - 3.8ppm corressponding to the C[H.sub.2] attached to amide and hydroxyl is an evidence that during the reaction between free -OH group of ABOPEtA and -NCO groups of TDI, -C[H.sub.2] were consumed and the reduction in peak [delta]=5.38- 5.36ppm signified consumption of olefinic proton while residual -OH peak appears at [delta] 5.5ppm.
The [.sup.1]H-NMR spectrum exhibited the presence of eight olefinic protons, one methyl doublet signals, one anomeric proton signal ([[delta].sub.HI]" 5.21) confirmed by one anomeric carbon ([[delta].sub.CI"] 102.07) indicating that the compound contains one sugar moiety (Rhamnose).
The catalysts will be combined with Dow's Insite Technology and Solution Process to offer a highly versatile family of olefinic polymers and new applications.
The NS6's olefinic overmolding increases the durability of the connection and provides a better grip for users.
Dalfopristin is an olefinic macrolactone that binds to the 50S subunit of the prokaryotic ribosome and interferes with the function of peptidyl transferase, thereby inactivating the donor and acceptor sites of the ribosome.
The TPV is recyclable in the olefinic recycle stream.
Made from an olefinic dynamic vulcanizate, the grommets formed soft connections that stopped unwanted energy from disrupting operation and broadcasting as unwanted sound.