Polyfunctional polyisobutenes, their preparation, their formulation and their use
US5445657A · kind A · utility
5Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1994 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Jun 16, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Chlorine-free polyfunctional polyisobutenes are described that can be modified by amines, alcohols and/or amino alcohols to result in additives that can be used in the petroleum field in particular in fuels and engine lubricants. They are prepared by radical terpolymerization of isobutene, maleic anhydride and polyisobutene having an average content of "exo" end double bonds of at least 50%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.