| abstract |
(57) [Abstract] [Purpose] To solve the problems that magnesium hydroxide has a relatively high cost for flame retarding and the problem that magnesium hydroxide must be blended in large amounts in resins, Provided are a flame retardant having excellent flame retardancy, which can be manufactured at low cost, and a resin and / or rubber composition which is flame retarded by blending the flame retardant. [Structure] Formula (1) Ca 1-x M 2+ x (OH) 2 (1) [In the formula, M represents at least one of Mg, Mn, Fe, Co, Ni, Cu and Zn, and x is 0. 0.005 <x < [Indicated by a number in the range of 0.995]], and a flame-retardant resin composition containing the flame-retardant, containing a complex metal hydroxide as an active ingredient. |