| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heavy oil A composition having excellent low temperature fluidity, which does not easily cause a filter clogging trouble under a use condition of winter season in cold area by letting a CFI (cold temperature flow improver) exhibit its effect to the maximum.SOLUTION: Provided is a heavy oil A composition in which is mixed any of an atmospheric distillation bottom obtained by processing crude oil by an atmospheric distillation apparatus, a vacuum distillation bottom obtained by further processing the atmospheric distillation bottom by a vacuum distillation apparatus, or an extract obtained from a lubricant production process. An asphaltene content contained in the atmospheric distillation bottom, vacuum distillation bottom, or extract is 1.0 mass% or less. An asphaltene content in the heavy oil A composition is 7.0 mg/L or more and 45.0 mg/L or less, and a clouding point of the composition is -10.0°C or less.</p> |
