| 摘要 |
The invention relates to the use of resins, obtained by a reaction of cardanol with a compound of formula (1), where R1=H, COH, COOH, COOR2 or R2, R2=C1-C30 alkyl, C2-C30 alkenyl, C6-C18 aryl or C7-C30 alkaryl with a number average molecular weight of 250 to 100,000 units, in amounts of 0.5 to 10,000 ppm relative to the oil, for the dispersion of asphalts in crude oils or products derived therefrom.
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