Boron-containing compositions and lubricants containing them
US5240624A · kind A · utility
10Cited by
5References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Boron-containing compositions are prepared by the reaction of boric acid with the condensation product (which may be formed in situ) of a hydroxyaromatic compound)preferably a phenol) with an aromatic or aliphatic aldehyde (preferably formaldehyde). These compositions are useful as lubricant additives to inhibit oxidation, improve extreme pressure properties and decrease fuel consumption. They are especially useful as oxidation inhibitors in gear and bearing lubricants containing substantial amounts of sulfur and phosphorus compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.