US3711410A
Expired / Lapsed
US
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Low water-sensitive hydraulic fluids containing borate esters
Assignee: Olin Corp
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Filing: 1971-04-12
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Granted: 1973-01-16
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Expires: 1991-04-12
Abstract
Abstract 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. Such low-water sensitive hydraulic fluids are high boiling compositions particularly useful as brake fluids.
Inventors
- 👤 A Sawyer
- 👤 D Csejka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:32
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: 24
Claim 1
Independent Claim
226 words
A hydraulic fluid composition consisting essentially of (A) from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition of at least one base fluid or lubricant 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 2
Dependent Claim
225 words
A hydraulic fluid composition consisting essentially of (A) from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition of at least one base fluid or lubricant 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 in not less than 20 based on the total weight of all the oxyalkylene units; and (d) a borate ester of the formula:
Claim 3
Dependent Claim
225 words
A hydraulic fluid composition consisting essentially of (A) from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition of at least one base fluid or lubricant 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 4
Dependent Claim
223 words
A hydraulic fluid composition consisting essentially of (A) from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition of at least one base fluid or lubricant 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 5
Dependent Claim
226 words
A hydraulic fluid composition consisting essentially of (A) from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition of at least one base fluid or lubricant 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 6
Dependent Claim
226 words
A hydraulic fluid composition consisting essentially of (A) from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition of at least one base fluid or lubricant 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 7
Dependent Claim
226 words
A hydraulic fluid composition consisting essentially of (A) from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition of at least one base fluid or lubricant 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 8
Dependent Claim
42 words
The hydraulic fluid composition of claim 2 which contains from 0 to about 8.0 percent by weight of at least one said inhibitor for pH and corrosion control and from 0 to about 2.0 percent by weight of at least one antioxidant.
Claim 9
Dependent Claim
22 words
The hydraulic fluid composition of claim 2 wherein said base fluid or lubricant is at least one borate ester of type (a).
Claim 10
Dependent Claim
14 words
The hydraulic fluid composition of claim 10 wherein said diluent is of type (i).
Claim 11
Dependent Claim
38 words
The hydraulic fluid composition of claim 11 which contains from about 0.2 to about 6.0 percent by weight, based on the total weight of the hydraulic fluid, of at least one said inhibitor for pH and corrosion control.
Claim 12
Dependent Claim
33 words
The hydraulic fluid composition of claim 12 which contains from about 0.001 to about 1.0 percent by weight, based on the total weight of the hydraulic fluid, of at least one said antioxidant.
Claim 13
Dependent Claim
35 words
The hydraulic fluid composition of claim 2 wherein said base fluid or lubricant consists essentially of from about 30 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition.
Claim 14
Dependent Claim
22 words
The hydraulic fluid composition of claim 14 wherein said base fluid or lubricant is at least one borate ester of type (a).
Claim 15
Dependent Claim
34 words
The hydraulic fluid composition of claim 15 wherein said borate ester of type (a) has an R1 alkyl group of one to two carbon atoms and an Ra alkylene group of 2 to 3.
Claim 16
Dependent Claim
29 words
The hydraulic fluid composition of claim 15 wherein said borate ester of type (a) is 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 17
Dependent Claim
19 words
The hydraulic fluid composition of claim 15 wherein said diluent is at least one glycol ether of type (i).
Claim 18
Dependent Claim
54 words
The hydraulic fluid composition of claim 18 wherein said glycol ether of type (i) has an alkyl R group of one to two carbon atoms, an R'' selected from the group consisting of hydrogen and alkyl of one to two carbon atoms and an alkylene R'''' group of from two to three carbon atoms.
Claim 19
Dependent Claim
51 words
The hydraulic fluid composition of claim 18 wherein said glycol ether 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
37 words
The hydraulic fluid composition of claim 18 which contains from about 0.2 to about 6.0 percent by weight, based on the total weight of the hydraulic fluid of at least one inhibitor for pH and corrosion control.
Claim 21
Dependent Claim
32 words
The hydraulic fluid composition of claim 21 which contains from about 0.001 to about 1.0 percent by weight, based on the total weight of the hydraulic fluid, of at least one antioxidant.
Claim 22
Dependent Claim
250 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 from about 20 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition, of at least one borate ester base fluid or lubricant 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 23
Dependent Claim
33 words
The process of claim 23 wherein there is from about 30 to about 54.4 percent by weight, based on the total weight of the hydraulic fluid composition, of said base fluid or lubricant.
Claim 24
Dependent Claim
20 words
The process of claim 24, wherein said base fluid or lubricant includes at least one borate ester of type (a).
References Cited (Backward Citations)
US3625899A
Cited
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 |