Patent ID: 6846778

Claim:
A hydrocarbon composition comprising at least 95 wt % paraffin molecules, of which at least 90 wt % are isoparaffins, containing hydrocarbon molecules having consecutive numbers of carbon atoms, is a liquid at 100° C., at which temperature its kinematic viscosity is above 8 cSt, has respective initial and end boiling points of at least 850 and 1000° F. (454 and 538° C.), wherein the branching index BI, and the branching proximity CH 2 >4 of said isoparaffinic hydrocarbon molecules, are such that: BI−0.5(CH 2 >4)<15; and (a) BI+0.85(CH 2 >4)<45; (b) as measured over the hydrocarbon composition as a whole.