Propylene


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Related to Propylene: propylene glycol, Propylene oxide

propylene

[′prō·pə‚lēn]
(organic chemistry)
CH3CH=CH2 Colorless unsaturated hydrocarbon gas, with boiling point of -47°C; used to manufacture plastics and as a chemical intermediate. Also known as methyl ethylene; propene.

Propylene

 

(also propene), an unsaturated hydrocarbon with the structure CH3—CH=CH2. Propylene is a colorless, combustible gas with a slight odor, a melting point of –185°C, and a boiling point of –47.7°C. Large-scale commercial production of propylene is carried out by the pyrolysis of petroleum fractions and the catalytic dehydrogenation of propane. Propylene is one of the most important building blocks in the petrochemical industry. It is used in the preparation of glycerol (Figure 1,1), acrolein (II), acrylonitrile (III), allyl alcohol (IV), isopropyl alcohol (V), acetone (VI), and phenol (VII).

The interaction of propylene with formaldehyde yields butadiene (VIII); condensation with isobutane yields 2,2,3-tri-methylbutane, or triptane (IX). Polypropylene (X) is obtained by the polymerization of propylene. Propylene-based synthesis products are widely used in the manufacture of such items as plastics, rubbers, detergents, motor fuel components, and solvents.

References in periodicals archive ?
Managing Director of PRTC Esmaeil Qanbari said that under the contract the two sides will bring together their latest scientific and technological achievements in the production of propylene from methanol.
Until recently, 70 percent of the world's propylene was produced as a byproduct of making ethylene from petroleum.
New product developments are projected to boost growth in global propylene market during 2016-2021.
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A large share of propylene output occurs either as by-product in the steam cracking of ethylene or catalytic cracking in refineries, it said.
Propylene industry market dynamics in The US from 2000 to 2017 consisting of market size, demand and production outlook, demand by end use sector, and average prices
But affinity for water is not the only reason propylene glycol finds a use in personal care products.
The company said that basic engineering work for the new on-purpose propylene production facility at Dow Texas Operations has commenced and the project is on track for production start-up in 2015.
As a functional excipient, propylene glycol helps to solve formulation problems and create simpler, more effective formulations.
Lyondell is a major supplier of propylene oxide and propylene glycol.
Acrylonitrile is produced by reacting propylene and ammonia, both supplied from other Teesside companies, with oxygen from the air.