butyl acetoacetic ester

The acetoacetylated degree can be more than 70 percent with using CCl 3COOH,[LJ1,H,DY0] CH 3 SO 3H as catalyst at 120 ℃ or 140 ℃.

通过酯交换法可制得乙酰乙酰化丙烯酸共聚物。