Hydrocarbon mixtures and use thereof
The invention relates to hydrocarbon mixtures containing the 14 C isotope, use thereof and cosmetic and/or pharmaceutical preparations comprising hydrocarbon mixtures containing the 14 C isotope.
1. An isolated hydrocarbon mixture comprising 14 C isotopes, wherein the isolated hydrocarbon mixture comprises:
a) 55 to 80% by weight of linear C11 hydrocarbons and;
b) 20 to 45% by weight of linear C13 or linear C15 hydrocarbons,
based on the sum of the hydrocarbons present in the mixture.
2. The isolated hydrocarbon mixture of claim 1 , further comprising 12 C isotopes, wherein the proportion of 14 C isotopes to 12 C isotopes is in the range from 6×10 −13 to 1.2×10 −12 .
3. The isolated hydrocarbon mixture of claim 1 , further comprising less than or equal to 20% by weight, of branched hydrocarbons, based on the sum of the hydrocarbons.
4. The isolated hydrocarbon mixture of claim 1 wherein the hydrocarbons (a) and (b) make up at least 80% by weight, based on the sum of the hydrocarbons.
5. The isolated hydrocarbon mixture of claim 1 which comprises 24 to 30% by weight of linear C13 or linear C15 hydrocarbons.
6. The isolated hydrocarbon mixture of claim 1 further comprising at least one linear hydrocarbon selected from the group consisting of linear C17, C19, C21 and C23 hydrocarbons, and mixtures thereof.
7. The isolated hydrocarbon mixture of claim 1 wherein the component (b) is linear C15 hydrocarbons and the mixture further comprises linear C17 hydrocarbons.
8. The isolated hydrocarbon mixture of claim 1 further comprising linear C17 and linear C19 hydrocarbons.
9. A method of preparing cosmetic and/or pharmaceutical formulations comprising adding the hydrocarbon mixture of claim 1 to a cosmetic and/or pharmaceutical base.
10. A cosmetic and/or pharmaceutical formulation comprising 0.1 to 80% by weight of the hydrocarbon mixture of claim 1 .
11. The cosmetic and/or pharmaceutical formulation of claim 10 wherein the proportion of 14 C isotopes relative to 12 C isotopes in the hydrocarbon mixture is in the range from 6×10 −13 to 1.2×10 −12 .
12. The cosmetic and/or pharmaceutical formulation of claim 10 further comprising at least one antiperspirant or deodorant active ingredient.
13. The cosmetic and/or pharmaceutical formulation of claim 10 further comprising at least one emulsifier and/or surfactant and/or wax component and/or polymer and/or further oil body.
14. The isolated hydrocarbon mixture of claim 1 , further comprising less than or equal to 1% by weight, of branched hydrocarbons, based on the sum of the hydrocarbons.
15. The isolated hydrocarbon mixture of claim 4 wherein the hydrocarbons (a) and (b) make up at least 90% by weight, based on the sum of the hydrocarbons.
16. The isolated hydrocarbon mixture of claim 8 further comprising at least one linear C21 hydrocarbon.
17. The method of claim 9 wherein said hydrocarbon mixture is added as an oil body and/or dispersant.