Ethylene alpha-olefin copolymer substituted amino phenol mannich base lubricant dispersant additives
US5128056A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1991 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Mar 20, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to oil-soluble lubricating oil additives comprising Mannich Base condensates of (A) an ethylene-alpha-olefin polymer substituted mono- or dicarboxylic acid material, (B) an optionally alkyl-substituted N-hydroxyaryl compound, (C) an aldehyde, and (D) an amine, wherein the polyer moiety of the mono- or dicarboxylic acid material is derived from at least one terminally unsaturated ethylene alpha-olefin copolymer of 300 to 10,000 number average molecular weight, wherein the terminal unsaturation comprises ethenylidene unsaturation. The Mannich Base condensates of this invention are useful as dispersants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.