Distillable fuel markers
US9688930B2 · kind B2 · utility
3Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2013 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Dec 26, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2270/026
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel by adding to the petroleum hydrocarbon or liquid biologically derived fuel at least one compound having formula Ar(R2)m(OR1)n, wherein Ar is an aromatic ring system having from six to twenty carbon atoms, R1 is C1-C12 alkyl or C2-C12 alkenyl, R2 is C1-C12 alkyl or C3-C12 alkenyl, m is an integer from zero to five and n is an integer from one to three; wherein each compound of formula Ar(R2)m(OR1)n is present at a level from 0.01 ppm to 100 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.