Patent US4048083A successfully refreshed from Google Patents.
US4048083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Functional fluid systems containing alkoxysilanol cluster compounds
Assignee: Olin Corp
•
Filing: 1976-04-12
•
Granted: 1977-09-13
•
Expires: 1996-04-12
Abstract
Abstract Functional fluid systems, i.e., hydraulic fluid and heat transfer fluid systems, containing alkoxysilanol cluster compounds having the formula RSi[OSi(OR')3]2OH wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms, are described.
Inventors
- 👤 Karl O. Knollmueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:58
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0896; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/18; C10M2207/20; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2227/00; C10M2227/06; C10M2229/00; C10M2229/04; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
112 words
In a method wherein a first mechanical effort is converted to pressure at a first location, the pressure is transmitted from said first location to a second location via a hydraulic fluid, and said pressure is converted to a second mechanical effort at said second location, the improvement which comprises using as said hydraulic fluid one which comprises an effective amount of a compound having the formula: ##STR2## wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl, and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms.
Claim 2
Dependent Claim
112 words
In a method wherein a first mechanical effort is converted to pressure at a first location, the pressure is transmitted from said first location to a second location via a hydraulic fluid, and said pressure is converted to a second mechanical effort at said second location, the improvement which comprises using as said hydraulic fluid one which comprises an effective amount of a compound having the formula: ##STR2## wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl, and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms.
Claim 3
Dependent Claim
52 words
The method of claim 1 wherein R is hydrogen, an alkyl or alkenyl having about 1 to about 18 carbon atoms or an aryl or aralkyl having about 6 to about 24 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 4
Dependent Claim
25 words
The method of claim 2 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 5
Dependent Claim
50 words
The method of claim 1 wherein R is hydrogen, an alkyl having about 1 to about 8 carbon atoms or an aryl or aralkyl having about 6 to about 14 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 6
Dependent Claim
25 words
The method of claim 4 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms.
Claim 7
Dependent Claim
25 words
The method of claim 1 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 8
Dependent Claim
25 words
The method of claim 6 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms.
Claim 9
Dependent Claim
124 words
In a method wherein heat is passed from a first heat conductor to a heat transfer fluid at a first location, the heat is transmitted from said first location to a second location, via said heat transfer fluid and said heat is passed from said heat transfer fluid to a second heat conductor at said second location, the improvement which comprises using as said heat transfer fluid one which comprises an effective amount of a compound having the formula: ##STR3## wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl, and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms.
Claim 10
Dependent Claim
124 words
In a method wherein heat is passed from a first heat conductor to a heat transfer fluid at a first location, the heat is transmitted from said first location to a second location, via said heat transfer fluid and said heat is passed from said heat transfer fluid to a second heat conductor at said second location, the improvement which comprises using as said heat transfer fluid one which comprises an effective amount of a compound having the formula: ##STR3## wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl, and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms.
Claim 11
Dependent Claim
52 words
The method of claim 8 wherein R is hydrogen, an alkyl or alkenyl having about 1 to about 18 carbon atoms or an aryl or aralkyl having about 6 to about 24 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 12
Dependent Claim
25 words
The method of claim 9 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 13
Dependent Claim
50 words
The method of claim 8 wherein R is hydrogen, an alkyl having about 1 to about 8 carbon atoms or an aryl or aralkyl having about 6 to about 14 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 14
Dependent Claim
25 words
The method of claim 11 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms.
Claim 15
Dependent Claim
25 words
The method of claim 8 wherein a majority of the R'0 radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 16
Dependent Claim
25 words
The method of claim 13 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |