Tracer-containing compositions
View Patent ↗The present invention relates to the field of compression refrigeration and air conditioning. Specifically, the present invention relates to a tracer-containing compositions comprising refrigeration/heating fluid and tracer compound(s). Additionally, the present invention relates to a method for detecting tracer compounds to identify gases after leaving the custody of the original manufacturer or prior source, and the verification of authenticity. The aforementioned method provides for the detection of tracer compounds, which in turn, may alert the refrigeration industry to when dilution, adulteration, contamination or other unauthorized practices have occurred with refrigeration products.
1. A tracer-containing composition, said composition consisting of a refrigeration/heating fluid and at least one tracer compound, said tracer compound being analytically detectable and selected from the group consisting of hydrofluorocarbons, deuterated hydrofluorocarbons, deuterated hydrocarbons, perfluorocarbons, and combinations thereof with the proviso that said refrigeration/heating fluid is different from said tracer compound.
2. The tracer-containing composition according to claim 1 , wherein said composition comprises a single tracer compound.
3. The tracer-containing composition according to claim 1 , wherein said composition comprises a tracer compound or tracer blend in an amount ranging from about 50 ppm to about 1000 ppm.
4. The tracer-containing composition according to claim 3 , wherein said composition comprises a tracer compound or tracer blend in an amount ranging from about 50 ppm to about 500 ppm.
5. The tracer-containing composition according to claim 4 , wherein said composition comprises a tracer compound or tracer blend in an amount ranging from about 100 ppm to about 300 ppm.
6. The tracer-containing composition according to claim 1 , wherein the tracer compound is at least one compound selected from PFC-116, PFC-C216, PFC-218, PFC-C318, PFC-31-10mc, PFC-31-10my, PFC-C51-12mycm, cis- or trans- PFC-C51-12mym, HFC-23, HFC-161, HFC-152a, HFC -134, HFC-227ea, HFC-227ca, HFC-236cb, HFC-236ea, HFC-236fa, HFC -245cb, HFC-245fa, HFC-254cb, HFC-254eb, HFC-263fb, HFC-272ca, HFC -281ea, HFC-281fa, HFC-329p, HFC-329mmz, HFC-338mf, HFC-338pcc, HFC -347s, HFC-43-10mee, Perfluoromethylcyclo-pentane, Perfluoromethylcyclohexane, Perfluorodimethylcyclo-hexane (ortho, meta, or para), Perfluoroethylcyclohexane, Perfluoroindan, Perfluorotrimethylcyclo-hexane and isomers thereof, Perfluoroisopropylcyclo-hexane, cis-Perfluorodecalin, trans-Perfluorodecalin, cis- or trans- Perfluoromethyldecalin and isomers thereof, and combinations thereof.