Compositions based on alkenylsuccinimides as additives for lubricating oils
US4081388A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Apr 5, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
New compositions, based on alkenylsuccinimides, are provided which impart useful dispersing, detergent, anti-rust and anti-foam properties when employed as an additive in a lubricating oil. The new compositions are alkenylsuccinimides obtained by condensing an alkenylsuccinic anhydride with at least one polyamine of the formula: ##STR1## in which formula R'.sub.4 is a -r-O-r' radical, R'.sub.5 is one of the radicals -r-O-r'-NH.sub.2, -r'-NH.sub.2, or -r-OH, R'.sub.6 is one of the radicals -r-O-r-NH.sub.2, -r'-NH.sub.2, -r-OH, C.sub.1 -C.sub.4 -alkyl or phenyl, and r and r' have the definition given fully below using a molar ratio of polyamine to alkenylsuccinic anhydride of less than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.