Light oil compositions

Details Light oil compositions Light oil compositions

2007-03-07

2011-12-20

McAvoy, Ellen (Department: 1771)

Fuel and related compositions

Liquid fuels

C585S014000, C208S015000

Reexamination Certificate

active

08080068

ABSTRACT:
The invention provides a gas oil composition having a C10-24 paraffin composition that satisfies the condition represented by inequality (1-1) below, a slow-cooling cloud point of no higher than −6.0° C. and a pour point of no higher than −7.5° C. The invention further provides a gas oil composition having a C10-24 paraffin composition that satisfies the condition represented by inequality (1-2) below, a distillate volume at a distillation temperature of 250° C. (E250) of 5-45% and a slow-cooling cloud point of higher than −6.0° C. In inequalities (1-1) and (1-2), n is the carbon number of the paraffin and f(n) is the paraffin composition parameter for the carbon number of n represented by formula (2) below. In formula (2), n represents an integer of 10-24, and a, b and c respectively represent the proportion (in terms of molar value) of normal paraffins with carbon number of n, of isoparaffins with carbon number of n and one branch and of isoparaffins with carbon number of n and two or more branches, with respect to the total amount of paraffins with carbon number of n.[Mathematical⁢⁢Formula⁢⁢1]340.0≤∑n=1024⁢⁢f⁡(n)≤400.0(1⁢-⁢1)[Mathematical⁢⁢Formula⁢⁢2]f⁡(n)=27.45-3.55⁢(b/a)-0.65⁢(c/a)(2)[Mathematical⁢⁢Formula⁢⁢3]370.0≤∑n=1024⁢⁢f⁡(n)≤430.0(1⁢-⁢2)

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