US3711412A
Expired / Lapsed
US
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Low-water sensitive hydraulic fluids containing borate esters and formals
Assignee: Olin Corp
•
Filing: 1971-04-12
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Granted: 1973-01-16
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Expires: 1991-04-12
Abstract
Abstract This invention relates to a low water-sensitive hydraulic fluid composition which contains from about 20 to about 96 percent by weight of at least one borate ester as the base fluid and additionally, from about 2 to about 40 percent of a bis (glycol ether) formal. Such low water-sensitive hydraulic fluids are high boiling compositions which also have desirable properties at low temperatures, particularly viscosity, and thus are useful under a wide variety of climatic and operational conditions.
Inventors
- 👤 A Sawyer
- 👤 D Csejka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:17
CPC Classifications
C; C10; C10M; C10M111/00; C10M111/04; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10M105/00; C10M105/78; C10M107/00; C10M107/20; C10M107/30; C10M107/32; C10M107/34; C10M125/00; C10M125/20; C10M125/26; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/08; C10M133/38; C10M133/40; C10M145/00; C10M145/18; C10M145/24; C10M145/26; C10M145/28; C10M145/36; C10M169/00; C10M169/04; C10M169/044; C10M3/00; F; F02; F02M; F02M1/00; C10M2201/00; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/083; C10M2201/084; C10M2201/085; C10M2201/087; C10M2201/10; C10M2201/102; C10M2201/105; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/024; C10M2207/025; C10M2207/026; C10M2207/04; C10M2207/046; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/18; C10M2207/20; C10M2207/28; C10M2207/282; C10M2207/284; C10M2207/285; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/1033; C10M2209/104; C10M2209/1045; C10M2209/105; C10M2209/1055; C10M2209/106; C10M2209/1065; C10M2209/107; C10M2209/1075; C10M2209/108; C10M2209/1085; C10M2209/109; C10M2209/1095; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/067; C10M2215/14; C10M2215/18; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/09; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043; C10M2227/00; C10M2227/06; C10M2227/061; C10M2227/0615; C10M2227/062; C10M2227/0625; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
37 words
The hydraulic fluid composition of claim 1 wherein said formal has an alkyl Rb group of one to four carbon atoms, an alkylene Ra group of two to three carbon atoms and x is 1 to 3.
Claim 2
Dependent Claim
31 words
The hydraulic fluid composition of claim 2 wherein from about 2 to about 15 percent by weight, based on the total weight of the hydraulic fluid, of said formal is present.
Claim 3
Dependent Claim
23 words
The hydraulic fluid composition of claim 3 wherein said formal is selected from the group consisting of: (CH3O(C2H4O))2CH2, (CH3O(C2H4O)3)2CH2, (C2H5O(C2H4O)2)2CH2, (C4H9O(C2H4O))2CH2, and (C4H9O(C2H4O)3)2CH2.
Claim 4
Dependent Claim
20 words
The hydraulic fluid composition of claim 2 wherein said base fluid or lubricant is a borate ester of type (a).
Claim 5
Dependent Claim
35 words
The hydraulic fluid composition of claim 5 wherein said base fluid or lubricant consists essentially of from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition.
Claim 6
Dependent Claim
35 words
The hydraulic fluid composition of claim 5 wherein said base fluid or lubricant consists essentially of from about 54.5 to about 92 percent by weight, based on the total weight of the hydraulic fluid composition.
Claim 7
Dependent Claim
36 words
The hydraulic fluid composition of claim 7 wherein said borate ester of type (a) has an alkyl R1 group of one to two carbon atoms and an Ra alkylene group of two to three cArbon atoms.
Claim 8
Dependent Claim
31 words
The hydraulic fluid composition of claim 7 wherein said base fluid or lubricant is a borate ester selected from the group consisting of: (CH3(OCH2CH2)3O)3-B, (C2H5(OCH2CH2)2O)3-B, (C2H5(OCH2CH2)3O)3-B, (C2H5(OCH2CH2)4O)3-B, (C3H7(OCH2CH2)3O)3-B, (C4H9(OCH2CH2)2O)3-B and (C4H9(OCH2CH2)3O)3-B.
Claim 9
Dependent Claim
32 words
The hydraulic fluid composition of claim 9 wherein from about 2 to about 15 percent by weight, based on the total weight of the hydraulic fluid composition, of said formal is used.
Claim 10
Dependent Claim
24 words
The hydraulic fluid composition of claim 10 wherein said formal is selected from the group consisting of: (CH3O(C2H4O))2CH2, (CH3O(C2H4O)2)2CH2, (CH3O(C2H4O)3)2CH2, (C2H5O(C2H4O)2)2CH2, (C4H9O(C2H4O))2CH2 and (C4H9O(C2H4O)3)2CH2.
Claim 11
Dependent Claim
34 words
The hydraulic fluid composition of claim 11 wherein said diluent is present in amounts of from about 2 to about 70 percent by weight, based on the total weight of the hydraulic fluid composition.
Claim 12
Dependent Claim
50 words
The hydraulic fluid composition of claim 12 wherein said diluent is selected from the group consisting of diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether and tetraethylene glycol monobutyl ether.
Claim 13
Dependent Claim
27 words
The hydraulic fluid composition of claim 13 wherein from about 0.2 to about 6.0 percent by weight of an inhibitor for pH and corrosion control is used.
Claim 14
Dependent Claim
27 words
The hydraulic fluid composition of claim 14 wherein said inhibitor is selected from the group consisting of glycerin, butynediol, diethanolamine, methyl diethanolamine, mixed isopropanolamines, diisopropanolamine and triisopropanolamine.
Claim 15
Dependent Claim
32 words
The hydraulic fluid composition of claim 15 wherein from about 0.001 to about 1.0 percent by weight, based on the total weight of the hydraulic fluid composition, of an antioxidant is used.
Claim 16
Dependent Claim
22 words
The hydraulic fluid composition of claim 16 wherein said antioxidant is selected from the group consisting of sodium nitrite and dioctyl diphenylamine.
Claim 17
Dependent Claim
17 words
The hydraulic fluid composition of claim 5 wherein said diluent is a glycol ether of type (aa).
Claim 18
Dependent Claim
34 words
The hydraulic fluid composition of claim 18 wherein said diluent is present in amounts of from about 2 to about 70 percent by weight, based on the total weight of the hydraulic fluid composition.
Claim 19
Dependent Claim
50 words
The hydraulic fluid composition of claim 19 wherein said diluent is selected from the group consisting of: diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether and tetraethylene glycol monobutyl ether.
Claim 20
Dependent Claim
24 words
The hydraulic fluid composition of claim 20 wherein said formal is selected from the group consisting of: (CH3O(C2H4O))2CH2. (CH3O(C2H4O)2)2CH2, (CH3O(C2H4O)3)2CH2, (C2H5O(C2H4O)2)2CH2, (C4H9O(C2H4O))2CH2, and (C4H9O(C2H4O)3)2CH2.
Claim 21
Dependent Claim
37 words
The hydraulic fluid composition of claim 18 having incorporated therein from 0 to about 8.0 percent by weight, based on the total weight of the hydraulic fluid composition, of an inhibitor additive for pH and corrosion control.
Claim 22
Dependent Claim
21 words
The hydraulic fluid composition of claim 22 wherein from about 0.2 to 6.0 percent by weight of said inhibitor is used.
Claim 23
Dependent Claim
27 words
The hydraulic fluid composition of claim 23, wherein said inhibitor is selected from the group consisting of: glycerin, butynediol, diethanolamine, methyl diethanolamine, mixed isopropanolamines, diisopropanolamine and triisopropanolamine.
Claim 24
Dependent Claim
33 words
The hydraulic fluid composition of claim 22 wherein from 0 to about 2 percent by weight, based on the total weight of the hydraulic fluid composition, of an antioxidant additive is incorporated therein.
Claim 25
Dependent Claim
22 words
The hydraulic fluid composition of claim 25 wherein from about 0.001 to about 1.0 percent by weight of said antioxidant is used.
Claim 26
Dependent Claim
22 words
The hydraulic fluid composition of claim 26 wherein said antioxidant is selected from the group consisting of sodium nitrite and dioctyl diphenylamine.
Claim 27
Dependent Claim
27 words
The hydraulic fluid composition of claim 27 wherein said inhibitor is selected from the group consisting of glycerin, butynediol, diethanolamine, methyl diethanolamine, mixed isopropanolamines, diisopropanolamines and triisopropanolamine.
Claim 28
Dependent Claim
24 words
The hydraulic fluid composition of claim 28 wherein said formal is selected from the group consisting of (CH3O(C2H4O))2CH2, (CH3O(C2H4O)2)2CH2, (CH3O(C2H4O)3)2CH2, (C2H5O(C2H4O)2)2CH2, (C4H9O(C2H4O))2CH2 and (C4H9O(C2H4O)3)2CH2.
Claim 29
Dependent Claim
228 words
In the operation of a fluid pressure operating device which uses hydraulic pressure transmission fluid, the improvement comprising using as said hydraulic pressure transmission fluid, a composition consisting essentially of (A) a borate ester base fluid selected from the group consisting of (a) a borate ester of the formula: (R1(O-Ra)y-O)3-B , wherein R1 is alkyl of from one to four carbon atoms, Ra is alkylene of from two to four carbon atoms and y is an integer of from 2 to 4; (b) a borate ester of the formula: (R1-(OCH2CHR2)m-(OCH2CHR3)nO)3-B , wherein R1 is alkyl of from one to four carbon atoms, R2 and R3 are independently selected from the group consisting of hydrogen and methyl, m and n are positive integers whose sum is from 2 to 20, and with the proviso that one of R2 and R3 is methyl and one of R2 and R3 is hydrogen; (c) a borate ester of the formula: (R1(Rg)O)3-B , wherein R1 is alkyl of from one to four carbon atoms, Rg is a heteric oxyalkylene chain of the formula: (- (OCH2CH2)r , (OCH2CHCH3)s -) , wherein the sum of r and s is not more than 20 and wherein the weight percent of the oxyethylene units is not less than 20 based on the total weight of all the oxyalkylene units; and (d) a borate ester of the formula:
Claim 30
Dependent Claim
30 words
The process of claim 30 wherein there is from about 2 to about 15 percent by weight, based on the total weight of the hydraulic fluid composition, of said formal.
Claim 31
Dependent Claim
31 words
The process of claim 31 wherein there is from about 20 to about 96 percent by weight, based on the total weight of the hydraulic fluid composition, of said base fluid.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |