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 ?
PP3: A high-molecular weight propylene homopolymer similar to PP1, with the exception of having a corresponding intrinsic viscosity of 1.85 dl/g.
The findings of cancer and other tumors in both rats and mice treated with propylene oxide meet the criteria established in the Occupational Safety and Health Administration (OSHA) Cancer Policy [3] for regarding it as a potential occupational carcinogen.
Ethylene Propylene Diene Monomer elastomers continue to be one of the most commonly used and fastest growing synthetic rubbers.
In January 2007, Egyptian Propylene & Polypropylene Company announced it was to build a propylene / polypropylene (PP) complex in Port Said, Egypt.
Global propylene capacity is expected to witness considerable growth over the next five years, potentially increasing capacity from 111.6 mtpa in 2015 to 130.0 mtpa in 2020.
Patent 9,074,062 (July 7, 2015), "Process for Preparing High Melt Strength Propylene Polymers," Umasankar Satpathy and Ajit Behari Mathur (Reliance Industries Ltd., Mumbai, India).
The joint venture, which is operated by Shell, produces styrene monomer and propylene oxide.
TEHRAN (FNA)- NASA's Cassini spacecraft has detected propylene, a chemical used to make food-storage containers, car bumpers and other consumer products, on Saturn's moon Titan.
The new plant is intended to supply hydrogen peroxide as a raw material for the manufacture of propylene oxide (PO) by Sadara Chemical Company.
She had been doing some shampoo label reading and discovered propylene glycol.
In its acetone report, The Plaza Group said large buyer contracts rolled over at $0.61 for August, and the propylene ratio remained essentially the same as July.