The development trend,preparation methods and performances of ashless dispersants are introduced,including succinimide,succinate,the boride of succimide,succinimide-acid compounds and derivatives,etc.

• 介绍了无灰分散剂的发展趋势,包括丁二酰亚胺、丁二酸酯、丁二酰亚胺的硼化物、丁二酰亚胺酸及其衍生物等各种类型无灰分散剂的制备方法及使用性能;