Tetrarylmethane ethers
US-10131606-B2 · Nov 20, 2018 · US
Xanthenes as fuel markers
US11149222B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11149222-B2 |
| Application number | US-201916975233-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 25, 2019 |
| Priority date | Apr 5, 2018 |
| Publication date | Oct 19, 2021 |
| Grant date | Oct 19, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 -substituted xanthene, wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 independently are hydrogen, hydrocarbyl, hydrocarbyloxy, aryl or aryloxy; wherein each compound of formula (I) is present at a level from 0.01 ppm to 20 ppm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound of formula (I) wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 independently are hydrogen, hydrocarbyl, hydrocarbyloxy, aryl or aryloxy; wherein each compound of formula (I) is present at a level from 0.01 ppm to 20 ppm. 2. The method of claim 1 in which R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 independently are hydrogen, C 1 -C 30 hydrocarbyl, C 1 -C 30 hydrocarbyloxy, C 6 -C 35 aryl or C 6 -C 35 aryloxy. 3. The method of claim 2 in which R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 collectively have at least one carbon atom. 4. The method of claim 3 in which R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 independently are hydrogen, C 1 -C 30 alkyl, C 2 -C 30 alkenyl, C 1 -C 30 alkoxy, C 2 -C 30 alkenyloxy, C 6 -C 20 aryl or C 6 -C 20 aryloxy. 5. The method of claim 4 in which the compound of formula (I) is present at a level from 0.01 ppm to 10 ppm. 6. The method of claim 5 in which R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 independently are hydrogen or C 1 -C 25 alkyl. 7. The method of claim 6 in which at least one of R 1 , R 8 , R 9 and R 10 is alkyl, and R 2 , R 3 , R 4 , R 5 , R 6 and R 7 are hydrogen.
Assignees
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Classifications
Tracers which serve to track or identify the fuel component or fuel composition · CPC title
Renewables or materials of biological origin · CPC title
- C10L1/1855Primary
Cyclic ethers, e.g. epoxides, lactides, lactones · CPC title
- C10L1/003Primary
Marking, e.g. coloration by addition of pigments · CPC title
Petroleum or natural waxes, e.g. paraffin waxes, asphaltenes · CPC title
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- What does patent US11149222B2 cover?
- A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 -substituted xanthene, wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 independently are hydrogen, h…
- Who is the assignee on this patent?
- Dow Global Technologies Llc, Rohm & Haas
- What technology area does this patent fall under?
- Primary CPC classification C10L1/1855. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 19 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 10 related publications on this page (citations in our corpus or others sharing the same primary CPC).