| 摘要 |
<p>Provided is a fuel oil flow improver with which it is possible to sufficiently improve the plugging point, the pour point, and the wax dispersibility, even if used in a vehicle with a fine fuel filter provided in the fuel supply line. A fuel oil flow improver comprising the ester compound (A) below and the copolymer (B) below, which is the fuel oil flow improver in which the mass ratio [(A)/(B)] of the ester compound (A) and the copolymer (B) is from 30/70 to 70/30.
(A) The ester compound represented by Formula (I) below. (I)
R 1 is a linear saturated alkyl group containing 17 to 23 carbon atoms, (EO) represents an oxyethylene group, and X, Y, and Z each represent an integer of 1 or higher. In addition, the average number of additional moles (n) of the oxyethylene group is n = (X + Y + Z)/3, and satisfies 1 ‰¤ n ‰¤ 3.
(B) A copolymer of a weight-average molecular weight of 5,000 to 50,000 obtained by polymerizing (b1) to (b3) below at a molar fraction of (b1)/(b2)/(b3) = 0.4 to 0.8/0.1 to 0.3/0.1 to 0.3, which is the copolymer in which, when the copolymer is measured using a differential scanning calorimeter and cooled from 100°C to -80°C at 10°C/minute, the exothermic peak temperature (Tp) is -40°C ‰¤ Tp ‰¤ -15°C.
R 2 represents a linear saturated alkyl group containing 10 to 18 carbon atoms.
R 3 represents a linear saturated alkyl group containing 8 to 16 carbon atoms.
R 4 represents a linear saturated alkyl group containing 10 to 16 carbon atoms.</p> |
