6792-31-0

Hexafluoropropylene Trimer (HFPT, 6792-31-0), also known as HFP Trimer, exists in three structural isomers: T-1, T-2, and T-3, with a boiling point of approximately 110–120°C. This high-performance fluorinated material combines chemical inertness, good thermal stability, and excellent dielectric properties, finding broad applications in thermal management and surface treatment.

Hexafluoropropylene trimer is a high-end perfluoroalkene compound produced through the catalytic isomerisation of hexafluoropropylene monomers, followed by precision distillation and purification. The industrial product primarily contains the highly reactive T3 isomer and is available in two main grades: industrial grade and electronic grade.
Hexafluoropropylene trimer offers a range of comprehensive advantages, including zero ozone depletion, low GWP environmental properties, absolute non-flammability, high insulation, exceptional stability and low surface tension, making it the ideal replacement for traditional, highly polluting, high-risk, high-global-warming-potential fluorinated solvents and cooling media.

Hexafluoropropene (HFP) can undergo oligomerisation to form hexafluoropropene dimers (HFPD) and trimers (HFPT). The liquid-phase method is the most widely used approach for the oligomerisation (trimerisation) of HFP. In a polar, non-protonic solvent, a nucleophilic catalyst is used to initiate the trimerisation of HFP to form hexafluoropropene trimer (HFPT, 6792-31-0). The optimal reaction conditions are 50 °C, 1.5 h, 0.4 mmol of the [C?DABCO][SCN] catalyst, a pressure of 0.5 MPa, and 10 mL of DMF as the solvent. The HFP conversion was close to 100 per cent. The resulting HFPT primarily comprised perfluoro-2,4-dimethyl-3-heptene (C9F18, T1, including the E and Z isomers), perfluoro-4-methyl-3-isopropyl-2-penten (C9F18, T2) and perfluoro-2,4-dimethyl-3-ethyl-2-penten (C9F18, T3), as well as a small amount of dimers [3].

[1] Makarov, K. N., et al. "Hexafluoropropene trimer. Synthesis and properties of functional derivatives." Journal of Fluorine Chemistry 10.4 (1977): 323-327.
[2] Hayakawa, Yoshio, Masakazu Nishida, and Taizo Ono. "Novel polystyrene bearing highly branched hexafluoropropene trimer pendants." Polymer bulletin 67.5 (2011): 805-814.