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US 11,702,606 B2Granted
Compositions and methods for marking hydrocarbon compositions with non-mutagenic dyes
AssigneeUnited Color Manufacturing, Inc.
InventorsHaresh Doshi, Michael Friswell, Thomas E. Nowakowski
Life of this patent
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Abstract
The disclosure provides dyes for marking hydrocarbon compositions. More particularly, the disclosure relates to non-mutagenic dyes for marking hydrocarbon compositions.
Claims25
A compound comprising the formula:
- wherein R is an ethyl group or an isopropyl group, R1 is an ethyl group or an isopropyl group, R2 is an alkyl group containing from 7 to 12 carbon atoms, and n is an integer from 1 to 3, wherein the compound produces a negative Ames Test result.
A composition for marking a hydrocarbon fluid, the composition comprising:
- between 0.1% and 70% by weight of a compound having the formula:
- wherein R is an ethyl group or an isopropyl group, R1 is an ethyl group or an isopropyl group, R2 is a heptyl group, a octyl group, or a nonyl group, and n is an integer from 1 to 3, wherein the compound produces a negative Ames Test result;
- and
- between 30% and 99.9% by weight of a solvent.
1 more element
A marked hydrocarbon composition comprising:
- a hydrocarbon fluid;
- and
- from 0.1 ppm to 500 ppm of a compound having the formula:
- wherein R is an ethyl group or an isopropyl group, R1 is an ethyl group or an isopropyl group, R2 is a heptyl group, a octyl group, or a nonyl group, and n is an integer from 1 to 3, wherein the compound produces a negative Ames Test result.
1 more element
Dependencies are inferred from the claim text.