Additives to lubricants resulting from the condensation of an alkylene polyamine with a copolymer containing vicinal carboxylic groups
US5055213A · kind A · utility
14Cited by
2References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Dec 7, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to additives to lubricants resulting from the condensation of a primary or secondary amine and/or of an alkylene polyamine with a copolymer containing vicinal carboxylic groups. Derivatives of phenothiazine, or naphthylamine and of diphenylamine are employed in most cases as alkylene polyamine. These compounds can be employed as multifunctional additives to lubricants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.