Back to results
US 3,939,084 AGranted
Functional fluid compositions containing substituted pyrimidines
AssigneeMonsanto Company
InventorJames D. Sullivan
Life of this patent
Estimating the term…
Abstract
Functional fluid compositions comprising polyphenyl thioethers, mixed polyphenyl oxy-thioethers and mixtures thereof containing certain pyrimidines as anti-corrosive agents have improved metal compatibility and are particularly useful as aircraft engine lubricants and hydraulic fluids.
Claims2
Composition comprising
- I. a major amount of a fluid of lubricating or hydraulic viscosity selected from the group consisting of
- i. polyphenyl thioethers,
- ii. mixed polyphenyl oxy-thioethers, and
- iii. admixtures thereof, and
- Ii. a corrosion inhibiting amount of 4-aminopyrazolo (3,4-d)pyrimidine.
2 more elements
Composition comprising
- I. a major amount of a fluid of lubricating or hydraulic viscosity selected from the group consisting of
- i. polyphenyl thioethers,
- ii. mixed polyphenyl oxy-thioethers, and
- iii. admixtures thereof, and
- Ii. a corrosion inhibiting amount of 7-amino-1-v-triazolo-(d)pyrimidine.
2 more elements
Dependencies are inferred from the claim text.