Alkenyl-substituted dicarboxylic derivatives
US5736492A · kind A · utility
5Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Aug 2, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C57/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides alkenyl-substituted dicarboxylic derivatives, having (a) an alkenyl group derived from an atactic propylene oligomer substantially of the formula ##STR1## where n is in the range 15 to 120, having number average molecular weight (M.sub.n) in the range 700 to 5000, and molar ratio dicarboxylic moieties to atactic propylene oligomer in the range 1:1 to 1.5:1; and having (b) an ester group derived from a polyol, which are useful as dispersant additives; a process for making the ester derivatives, additive concentrates containing such ester derivatives, and lubricating oil compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.