US4261848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkoxysiloxane hydraulic fluids
Assignee: OSI Specialties Inc
•
Filing: 1975-05-21
•
Granted: 1981-04-14
•
Expires: 1995-05-21
Abstract
Abstract This invention relates to alkoxysiloxanes characterized by alkoxy endblocking groups derived from alcohols having boiling points and solidification points in particular ranges. The novel alkoxysiloxanes are especially useful as hydraulic fluids (e.g., brake fluids).
Inventors
- 👤 James D. Reedy
- 👤 Jerome Henegar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:49
CPC Classifications
C; C10; C10M; C10M3/00; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/18; C08L; C08L83/00; C08L83/04; C08G77/045; C10M2207/00; C10M2207/02; C10M2207/021; C10M2229/00; C10M2229/04; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10N; C10N2040/00; C10N2040/06; C10N2040/08; C10N2040/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A liquid alkoxysiloxane represented by the average formula: (RO(Me.sub.2 SiO).sub.n R wherein Me is a methyl group, n has a value from 10 to 50 and R is a mixture of monovalent hydrocarbon groups having 13 carbon atoms per average group, said groups being derived by removal of the hydroxyl groups from a mixture of isomeric tridecanols that has the formula ROH, that has a boiling point above 100° C. at atmospheric pressure, and that solidifies only below -20° C.
Claim 2
Dependent Claim
80 words
A liquid alkoxysiloxane represented by the average formula: (RO(Me.sub.2 SiO).sub.n R wherein Me is a methyl group, n has a value from 10 to 50 and R is a mixture of monovalent hydrocarbon groups having 13 carbon atoms per average group, said groups being derived by removal of the hydroxyl groups from a mixture of isomeric tridecanols that has the formula ROH, that has a boiling point above 100° C. at atmospheric pressure, and that solidifies only below -20° C.
References Cited (Backward Citations)
USRE25727E
Cited
US2415389A
Cited
US2624749A
Cited
US2909549A
Cited
US2917480A
Cited
US3389088A
Cited
US3317428A
Cited
US3821114A
Cited
US3833505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |