| 摘要 |
<p>The cleaner is solid, granulated or powdery (pref. of grain size 0.001-1 mm). 1-50% by wt. consists of finely-divided particles, which are insoluble in water and alkaline solns. and consist of opt. halogen or oxygen-contg. polymers of 2-8C vinyl cpds. The m.pt. or softening point of the polymer is >100 degrees C and contains 0.5-10 gm. polymer/gm. oil.</p> |
