|
 The triple-unsaturated cyclic hydrocarbon cyclododecatriene (CDT) is a colorless liquid at room temperature, with a characteristic terpene-like odor. It has a boiling point of 263.5°C.
CDT is formed by catalytic trimerization of butadiene.
Of the possible isomers of CDT, only the cis, trans, trans-1,5,9 isomer is industrially important. The triple-unsaturated character of the C12 ring permits a wide range of chemical reactions, making CDT one of the most important starting materials for cyclic and linear compounds with 12 carbon atoms. Moreover, these reactions can be selectively controlled so as to allow reaction of only one or two of the double bonds.
- the product obtained on complete hydrogenation of CDT is cyclododecane, a chemical intermediate that is converted in a number of synthetic steps to laurolactam, the monomer of polyamide 12 (VESTAMID®L).
- if this complete hydrogenation is followed by oxidative ring-opening, the product is 1,12-dodecanedioic acid, an important monomer in the production of plastics and coatings.
- selective hydrogenation leads to the monofunctional cyclododecene.
- CDT is an important raw material in the manufacture of brominated flame retardants, which are used mainly in plastics, for example, polystyrene.
- it is also used in the production of fragrances and odorants for the perfume industry.
|
Contact
