hydrocarbon resin
2.For three heavy crude oils from Liahe CATC with 0.2% catalyst at 240℃ over 24 hrs leads to reduction in viscosity at 50℃ by 89.9—77.7% and to variation in composition: significant increase of saturated and aromatic hydrocarbon contents and decrease of resin and asphaltene contents and displacement of hydrocarbon distribution to direction of lower carbon number.

