Reaction product of polyalrylene-substituted polycarboxylic acid acylating agent, polyamine and sulfolene as a dispersant
US4695390A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Jan 4, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An oil-soluble dispersant containing sulfolane groups therein. The dispersant is made by reacting at least one polycarboxylic acid acylating agent having at least one polyalkene substituent of high or low molecular weight with a (B) polyamine and a (C) sulfolene. Desirably, the polyamine is branched or contains amino side chains and thus contains a plurality of primary amines. The acylating agents are characterized by the presence within their structure of at least 0.5 acylating groups for each equivalent weight of the polyalkene substituent. The compositions are useful in various motor oils, marine oils, automatic transmission fluids and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.