This result does not agree with the equations developed by Kraemer or Huggins, which have been widely used now for describing the changes of the oil viscosity with the added viscosity index improvers.

• 而目前常用的描述粘度指数改进剂对油品粘度影响的Kraemer和Huggins方程 ,在粘度指数改进剂添加量一定时 ,所显示的是一无截距的直线方程 ,与试验结果不完全一致。