| 摘要 |
<p>A dispersant composition having improved compatibility with fluorohydrocarbon-containing elastomeric engine seals, said dispersant composition comprising the reaction product obtained by reacting a C40-C250 hydrocarbyl-substituted succinic anhydride with aminoguanidine, or a basic salt thereof, at a reaction temperature of from about 155 DEG C to about 200 DEG C.</p> |
