| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for suppression-treating dusts of dusting substances, which uses a composition of a dust suppression-treating agent comprising a PTFE aqueous dispersion liquid having little possibility of imparting the environmental problem, has a high dust suppressing effect, and has little possibility of imparting the environmental problem; and to provide dust-suppressed materials of dusting substances. <P>SOLUTION: The method for suppression-treating dusts of dusting substances includes: mixing the dust suppression-treating agent composition comprising an aqueous dispersion liquid of a polytetrafluoroethylene having a fluorine-containing emulsifier content of ≤50 ppm wherein the specific gravity of the polytetrafluoroethylene is ≤2.27 and the average particle diameter thereof is 0.1 to 0.5 μm, and the fluorine-containing emulsifier is an anionic surfactant, with the dusting substances; and subjecting the mixture to a compression-shearing action at about 20 to 200°C, to thereby fibrillate the polytetrafluoroethylene. <P>COPYRIGHT: (C)2012,JPO&INPIT |
