| 摘要 |
The invention relates to use, in a plastics cleaning composition comprising nonionic surfactant, of a water soluble anionic polymer as an agent to retard the propagation of surface cracks and provides a method for cleaning plastics surfaces which comprises the step of treating the surface with a cleaning composition of pH 2-10, comprising: a) 1-30 wt.% nonionic surfactant, b) 0.0055 wt.% of a water soluble, anionic polymer having an average molecular weight less than 1,000,000, wherein, the ratio of polymer:nonionic is 0.1:1 or less.
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