Dicyclopentadiene, Just What Is This?

Dicyclopentadiene can be abbreviated to DCPD for much easier reference in the short to long-term future. Note for now that the chemical formula for dicyclopentadiene is C10H12. The visual representation or physical manifestation of this formula is as a liquid. At normal room temperature it will have a clear light yellow color and it does not smell good at all. The chemical formula has an energy density of 10,975 Wh per liter. In industries, dicyclopentadiene is being co-produced in large volumes.


These co-productions are required in the steam cracking of naphtha and gas oils converted into ethylene. Main use for this finished product is in resins and particularly in unsaturated polyester resins. The ethylene finished product will also be utilized in adhesives, paints and inks. Worldwide, no less than seven leading suppliers and manufacturers of dicyclopentadiene have been dealing with yearly capacities of nearly one hundred and eighty kilotonnes for nearly twenty years. When the chemical product is heated to above 150 degrees Celsius, DCPD goes through what is known as a retro Diels-Alder reaction that produces cyclopentadiene.

This reactive process can be reversed. At room temperature, cyclopentadiene will dimerize over a period of hours to reconvert to dicyclopentadiene. In the organometallic chemistry, cyclopentadiene acts as a precursor to metallocenes. Dicyclopentadiene is used as a monomer in polymerization reactions. During the olefin polymerization process, copolymers are formed with ethylene or styrene. Using a ring opening metathesis polymerization process, the homopolymer polydicyclopentadiene is produced. The hydrogenation of dicyclopentadiene gives rise to the TH-dimer. This is a compound that is utilized as fuel within the military industry manufacturing and combat processes. And that, briefly put, and abbreviated to DCPD, is what dicyclopentadiene is.

In your industrial startup, you may now have a hint of whether this chemical is required for your processes.