CALCIUM CARBONATE FILLER FOR RESIN METHOD FOR PRODUCING SAME AND RESIN COMPOSITION CONTAINING FILLER

摘要

(Mac-VIEW, manufactured by Mountech Co., Ltd.), a particle size distribution diameter of not more than 30% of particles having a particle diameter of not more than 0.26 탆, and satisfying the following formulas (a) to (c) A calcium carbonate filler is provided. (a) Dms5 / Dmv5? 3 (b) 1? S w? 8 (m ² / g) (c) Mo? 300 (ppm) Dms5: Volumetric particle size distribution by a laser diffraction particle size distribution analyzer (MASTERSIZER 2000 from Malvern), 5% diameter (μm) accumulated from small particle side; Dmv5: 5% diameter (μm) accumulated from the small particle side in the number particle size distribution in particle diameter (Mac-VIEW manufactured by Mountech Co.) measured by an electron microscope; Sw: BET specific surface area (Macsorb, manufactured by Mountech) (m ² / g); Mo: Water content (ppm) by Karl Fischer method at 200 to 300 ° C. The calcium carbonate filler for resin according to the present invention has fewer fine powders and is adjusted to a specific particle size, and has few volatile components such as water. Thus, problems such as foaming can be solved even when a high concentration is added to a resin having a high processing temperature.