BASIC MAGENSIUM CARBONATE, PROCESS FOR PRODUCING THE SAME AND UTILIZATION THEREOF

摘要

It is intended to provide basic magnesium carbonate in the form of aggregated tubular grains made up of flaky microcrystals. Owing to the unique form of being porous and tubular, the above-described basic magnesium carbonate has various excellent characteristics such as a large specific surface area, a large pore volume, a high oil absorptivity, a high moisture absorptivity and a low bulk density. By adding this basic magnesium carbonate to rubbers, resins, papers, molded articles, drugs, pesticides, cosmetics and so on, the above-described characteristics can be imparted to various products. Using a paper filler containing the basic magnesium carbonate, furthermore, paper density can be efficiently lowered and paper rigidity can be elevated. Functional grains composed of the basic magnesium carbonate as a hollow carrier and an active ingredient enclosed therein are also provided.