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olefin
(redirected from olefinic)

   Also found in: Dictionary/thesaurus, Medical 0.01 sec.
olefin (ō`ləfĭn) or olefin series: see alkene alkene , 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

 or alkene

Any unsaturated hydrocarbon containing one or more pairs of carbon atoms linked by a double bond (see covalent bond, saturation). Olefins may be classified by whether the double bond is in a ring (cyclic) or a chain (acyclic, or aliphatic) or by the number of double bonds (monoolefin, diolefin, etc.). Rare in nature, olefins are obtained by the cracking of petroleum fractions at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemicals industry. They react by adding other chemical agents at the double bond to form derivatives or polymers.


olefin [′ō·lə·fən]
(organic chemistry)
CnH2nA 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.

olefin
A lightweight, high-strength, long-chain polymeric material having very good abrasion resistance; especially used in indoor-outdoor carpeting.


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Commercialized four years ago by ExxonMobil Chemical, Houston, Vistamaxx olefinic TPE was used originally for spunbond nonwovens because of its elasticity.
The company recommends the new additive for use in HDPE resin, and suggests evaluation in other olefinic materials, as well.
It includes outer layers made of a polyester resin and at least one inner layer arranged between the outer layers comprising an olefinic resin containing 45% by weight or more of at least one ethylene-propylene-butene terpolymer based on the total weight of the inner layer.
 
 
 
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