BE764110A
Expired / Lapsed
BE
⏱️ 0.0 years remaining
Cyclic perfluoro polyethers
Assignee: Montedison Spa
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Filing: 1971-03-11
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Granted: —
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Expires: 1991-03-11
Abstract
Abstract Title cpds. are of formula (I): (where a and b are 0-20 and (a + b) is 2-30). Examples of I are perfluorodi-and tri-oxetane, perfluorodioxane etc. (I) are used as heat exchange fluids, refigerants, aerosol propellants, fire extinguishing agents and solvents. They are heat and oxygen stable, chemically inert, non-flammable and non-toxic, and have high dielectric constant. (I) are prepd. by a decomposn. reaction of a linear perfluoropolyether peroxide.
Inventors
- 👤 D Sianesi
- 👤 R Fontanelli
- 👤 A Grazioli
Bibliographic Details
Application Number
—
Jurisdiction
BE
Data Source
google_patents
Last Synchronized
2026-10-29 20:37
CPC Classifications
C; C07; C07D; C07D323/00; C07D323/04; C07D317/00; C07D317/08; C07D317/10; C07D317/32; C07D317/42; C07D319/00; C07D319/10; C07D319/12; C07D321/00; C07D325/00; C08; C08G; C08G65/00; C08G65/002; C08G65/005; C08G65/007; C08G65/02; C08G65/32
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