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US 10,538,230 B2Granted
Thiol based resin system for removal of copper ions from hydraulic fluid
AssigneeThe Boeing Company
InventorsPatrick J. Kinlen, Kelly L. Clark, Lauren A. Holden, Michelle C. Halsted
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Abstract
System and method for removing copper species from a hydraulic fluid are described. The system includes a filter including a thiol resin. The filter is configured to be in fluid communication with the hydraulic fluid of the hydraulic system.
Claims20
A method for removing copper species from a hydraulic fluid, the method comprising:
- (a) contacting the hydraulic fluid with a thiol resin comprising 2-mercaptoethyl ethyl sulfide silica beads to form a mixture, wherein the mixture undergoes reaction to generate a thiol resin-Cu[I] product.
A method for removing copper species from a hydraulic fluid, the method comprising:
- (a) contacting the hydraulic fluid with a thiol resin to form a mixture, wherein the mixture undergoes reaction to generate a thiol resin-Cu[I] product;
- wherein:
- the thiol resin comprises a metal-containing thiadiazole compound selected from a group consisting of 2,5-dimercapto-1,3,4-thiadiazole, dipotassium salt;
- poly[Zn:2,5-dimercapto-1,3,4-thiadiazole (1:1)];
- [Al:2,5-dimercapto-1,3,4-thiadiazole (1:3)];
- [Al:2,5-dimercapto-1,3,4-thiadiazole (3:1)];
- poly[Zn:(bis-(2,5-dithio-1,3,4-thiadiazole) (1:1)];
- poly[Fe:2,5-dimercapto-1,3,4-thiadiazole) (1:1)];
- poly[Al:2,5-dimercapto-1,3,4-thiadiazole (1:1)];
- and poly[Cu:2,5-dimercapto-1,3,4-thiadiazole (1:1)];
- or a combination thereof.
8 more elements
A method for removing copper species from a hydraulic fluid, the method comprising:
- (a) contacting the hydraulic fluid with a thiol resin to form a mixture, wherein the mixture undergoes reaction to generate a thiol resin-Cu[I] product and hydraulic fluid depleted of copper species, wherein:
- the thiol resin comprises a metal-containing thiadiazole compound selected from a group consisting of 2,5-dimercapto-1,3,4-thiadiazole, dipotassium salt;
- poly[Zn:2,5-dimercapto-1,3,4-thiadiazole (1:1)];
- [Al:2,5-dimercapto-1,3,4-thiadiazole (1:3)];
- [Al:2,5-dimercapto-1,3,4-thiadiazole (3:1)];
- poly[Zn:(bis-(2,5-dithio-1,3,4-thiadiazole) (1:1)];
- poly[Fe:2,5-dimercapto-1,3,4-thiadiazole) (1:1)];
- poly[Al:2,5-dimercapto-1,3,4-thiadiazole (1:1)];
- and poly[Cu:2,5-dimercapto-1,3,4-thiadiazole (1:1)];
- or a combination thereof.
7 more elements
A method for removing copper species from a hydraulic fluid, the method comprising:
- (a) contacting the hydraulic fluid with a thiol resin to form a mixture, wherein the mixture undergoes reaction to generate a thiol resin-Cu[I] product and hydraulic fluid depleted of copper species,
- wherein:
- the thiol resin comprises a metal-containing thiadiazole compound which is 2,5-dimercapto-1,3,4-thiadiazole, dipotassium salt;
- poly[Zn:2,5-dimercapto-1,3,4-thiadiazole (1:1)].
1 more element
Dependencies are inferred from the claim text.