Detergent compositions for gasoline-type fuels that contain polytetrahydrofuran derivatives
US6423107B1 · kind B1 · utility
3Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Aug 11, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Detergent additive compositions for gasoline-type fuels comprise at least one compound that corresponds to the general formula: in which R1, R2, R3 and R4 each represent a hydrogen atom or a hydrocarbon radical, for example alkyl, with 1 to 30 carbon atoms, whereby at least one of R1, R2, R3, and R4 is a hydrocarbon radical, n is a number from 1 to 20, m and m′ are each a number from 1 to 30, with m+m′ from 4 to 60. They can be added to gasoline-type fuels at a concentration of 20 to 5000 mg/liter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.