COMPLEX FLAME RETARDANT AND FLAME-RETARDANT RESIN COMPOSITION CONTAINING SAME

摘要

PURPOSE:To prepare a complex flame retardant which, when compounded into a thermoplastic resin, gives a compsn. being free from whitening and having flame-retardant properties meeting the requirements of UL specifications by mixing a powdered material contg. basic magnesium carbonate and a double salt of MgCO3 and CaCO3 with powdered Mg(OH)2 each in a specified amt. and surface-treating the resulting mixture. CONSTITUTION:10-90wt.% powdered material contg. basic magnesium carbonate (e.g. hydromagnesite) and a double salt of MgCO3 and CaCO3 (e.g. huntite) is mixed with 90-10wt.% powdered Mg(OH)2 and the resulting mixture is surface- treated, e.g., with stearic acid.