abstract |
A haze-free post-treated succinimide prepared by treating an alkenyl or alkyl succinimide with an oil-soluble, strong acid and contacting the treated succinimide with a cyclic carbonate to form the haze-free post-treated succinimide. The time, temperature, and acid concentration of the treating step and the time and temperature of contacting step are adjusted, in combination, to form the post-treated succinimide haze-free. |