Under the condition of high hardness and high electrolyte concentration,polyvinylpyrrolidone(PVP) shows better soil redeposition resistance than acrylate-maleic anhydride copolymer(MA-AA).

• 在高硬度水质及高浓度电解质条件下,聚乙烯吡咯烷酮(PVP)比马来酸酐/丙烯酸共聚物(MA-AA)有更好的抗再沾污性能。