What is the cloud point of base oil?

[LaneRose]

Oil, varnish, and other liquid samples are cooled to the temperature at which turbidity begins to appear under standard conditions, which is their cloud point. Introduction to Cloud Point: The cloud point is a characteristic constant of nonionic surfactants, influenced by the molecular structure of the surfactant and coexisting substances. As the temperature of a surfactant's aqueous solution increases, turbidity appears, indicating that the surfactant transitions from complete dissolution to partial dissolution. The temperature at which this transition occurs is the cloud point temperature. Technical Implementation Elements: One objective of the present invention is to provide a method for reducing the cloud point of high-viscosity lubricating base oil. This method achieves a lower reaction temperature through the grading of catalysts, approaching the reaction temperature of supplementary refining hydrogenation, thereby reducing costs while obtaining high-viscosity lubricating base oil with low pour point and low cloud point.