# US 9,005,314 B2 · Biphenyl benzyl ether marker compounds for liquid hydrocarbons and other fuels and oils

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,005,314 B2
- Document ID: US9005314B2
- Status: Granted
- Kind: B2
- Application number: 13/252,456
- Filed: 2011-10-04
- Published: 2012-04-19
- Granted: 2015-04-14
- Earliest claimed: 2010-10-14
- Assignees: Dow Global Technologies LLC
- Applicants: George David Green; Raymond John Swedo
- Inventors: George David Green; Raymond John Swedo
- Web page: https://patentgrep.com/patent/US9005314B2

## CPC

- C10L 1/003: {Marking, e.g. coloration by addition of pigments}
- C07C 43/2055: {containing more than one ether bond}
- C10M 171/007: {Coloured or dyes-containing lubricant compositions}
- C10L 1/1852: {Ethers; Acetals; Ketals; Orthoesters}
- C10M 2207/04: Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10N 2040/42: {Flashing oils or marking oils}
- C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

A compound having formula (I) wherein G represents at least one substituent selected from the group consisting of C1-C12 alkyl and C1-C12 alkoxy.

## Claims

### Claim 1

A compound selected from the group consisting of 4,4′-bis(4-methylphenoxymethyl)-1,1′-biphenyl, 4,4′-bis(2-methylphenoxymethyl)-1,1′-biphenyl and 4,4′-bis(4-t-butylphenoxymethyl)-1,1′-biphenyl.

### Claim 2

A method for marking a petroleum hydrocarbon, biodiesel fuel or ethanol fuel; said method comprising adding to said petroleum hydrocarbon, biodiesel fuel or ethanol fuel at least one compound having formula (I)
wherein G represents at least one substituent selected from the group consisting of C1-C12 alkyl and C1-C12 alkoxy and wherein each compound of formula (I) is present at a level from 0.05 ppm to 20 ppm.

### Claim 3 (depends on 2)

The method of claim 2 in which each compound of formula (I) is present at a level from 0.05 ppm to 10 ppm.

### Claim 4 (depends on 3)

The method of claim 3 in which G represents at least one substituent selected from the group consisting of C1-C6 alkyl or C1-C6 alkoxy.

### Claim 5 (depends on 4)

The method of claim 4 in which G represents two or three substituents selected from the group consisting of C1-C4 alkyl.

### Claim 6 (depends on 5)

The method of claim 5 in which G represents two or three methyl groups or two or three ethyl groups.

### Claim 7 (depends on 3)

The method of claim 3 in which said at least one compound having formula (I) is 4,4′-bis(4-methylphenoxymethyl)-1,1′-biphenyl, 4,4′-bis(2-methylphenoxymethyl)-1,1′-biphenyl or 4,4′-bis(4-t-butylphenoxymethyl)-1,1′-biphenyl.