Dispersant additive comprising the reaction product of a polyanhydride and a mannich condensation product
US5259968A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1992 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Oct 14, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition of matter useful as an oleaginous composition dispersant additive comprising the reaction product of: PA0 (1) at least one nitrogen or ester containing adduct selected from the group consisting of (i) oil soluble salts, amides, imides, oxazolines, esters, or mixtures thereof of long chain hydrocarbyl substituted mono and dicarboxylic acids or their anhydrides, (ii) long chain hydrocarbyl having a polyamine attached directly thereto, and (iii) Mannich condensation product formed by condensing long chain hydrocarbyl substituted hydroxy aromatic compound with an aldehyde and polyamine, said adduct containing at least one reactive group selected from reactive amino groups and reactive hydroxyl groups; and PA0 (2) at least one polyanhydride. Also disclosed are oleaginous compositions, particularly lubricating oil compositions, containing said reaction product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.