US3789088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimers of hexafluoropropene and propylene
Assignee: Arkema Inc
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Filing: 1971-05-24
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Granted: 1974-01-29
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Expires: 1991-05-24
Abstract
Abstract Cis and trans-1-trifluoromethyl-1,2,2-trifluoro-4-methylcyclobutane and mixtures thereof are provided. These compositions are liquids having high dielectric constant and low freezing points, useful as working fluids for hydraulic systems and as inert solvents. Also provided are linear dimers, 4,4,5,6,6,6hexafluorohexene-1 and 4,4,5,6,6,6-hexafluorohexene-2, useful as co-monomers in ethylene and propylene polymerization.
Inventors
- 👤 R Hager
- 👤 W Lalande
- 👤 M Hauptschein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:20
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C17/00; C07C17/26; C07C17/272; C07C17/275; C07C21/00; C07C21/02; C07C21/18; C07C23/00; C07C23/02; C07C23/06; C08; C08F; C08F210/00; C10M2211/00; C10M2211/02; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A mixture of cis- and trans-1-trifluoromethyl-1,2,2-trifluoro-4-methylcyclobutane.
References Cited (Backward Citations)
US3662009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |