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Updated: Jun 26, 2026

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
Published on: December 16, 2022
Method for determining double-bond positions in mixtures of linear olefins
Jeffrey C Gee1, Daniel S Prampin
1Chevron Phillips Chemical Company, 1862 Kingwood Drive, Kingwood, Texas 77339, USA. geejc@cpchem.com
Abstract:
We describe a new method for estimating the positions of double bonds in mixtures of linear olefins longer than octene. The method requires about a gram of olefin and a 5-10 min reaction catalyzed by a homogeneous metathesis catalyst. The carbon number distribution of the product mixture, as determined by gas chromatography, depends upon the distribution of double-bond isomers in the starting mixture. We describe a computer algorithm for using the final carbon number distribution to determine the locations of double bonds in the starting mixture. Examples are based on tetradecenes, hexadecenes, and octadecenes.
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