Phosphite sulfonate reaction products as multifunctional additives
US4992184A · kind A · utility
3Cited by
4References
42Claims
0Family size
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Key dates
| Filing date | Jul 19, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Jul 19, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Phosphites of hydrocarbyl diols or alkoxylated amines are reacted with aryl sulfonic acids preformed or formed in situ in lubricants to provide multifunctional antioxidant, corrosion inhibiting, and friction reducing properties therefor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.