Copolymer that can be used as detergent additive for fuel
US10752853B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2016 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Oct 28, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2270/026
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A block copolymer including: at least one block A of following formula (I): in which p is an integer ranging from 2 to 100, R1′ is selected from hydrogen and the methyl group, R2′ is chosen from C1 to C34 hydrocarbon-based chains, at least one block B of following formula (II): in which n is an integer ranging from 2 to 40, R1 is chosen from hydrogen and the methyl group, Z is chosen from the oxygen atom and the group —NR′— with R′ being chosen from a hydrogen atom and C1 to C12 hydrocarbon-based chains, G is a C1 to C34 hydrocarbon-based chain substituted by at least one quaternary ammonium group and optionally one or more hydroxyl groups. Also, the use of such a block copolymer as detergent additive in an internal combustion engine liquid fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.