Functional fluids containing ammonium salts of phosphorus acids
US4252662A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1976 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition and method for inhibiting damage in a functional fluid by incorporating therein a damage inhibiting amount of an ammonium salt of a phosphorus acid in accordance with the formula: ##STR1## wherein R, R', R", R''' can be the same or different and wherein R and R' can be conjoint and contain oxygen, nitrogen, and mixtures thereof; and represent alkyl, aralkyl, and alkenyl groups containing from 1 to about 30 carbon atoms, X represents oxygen or sulfur, Y' and Y'' represent lower alkoxy, lower thioalkoxy, alkenyloxy, thioalkenyloxy, lower alkyl, carboalkoxyalkyl, phenyl lower alkyl, thiophenoxy, aryloxy, alkaryloxy, aralkoxy and lower alkylthiophenoxy, Z represents oxygen or sulfur, and m equals 1 or 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.