| abstract |
An additive for a plastic which comprises fine particles prepared by calcining a dolomite exhibiting two endothermic peaks in the differential thermal analysis and then slaking the calcined product, wherein the fine particles comprises calcium carbonate, magnesium carbonate, magnesium oxide, calcium hydroxide and magnesium hydroxide as inherent chemical components and also comprises an ignition loss component in an amount of 10 to 40 wt % relative to the weight of the fine particles; and a plastic which has the additive incorporated therein and has been so converted as to have the capability of capturing hydrogen chloride and the antibacterial activity. |