| 摘要 |
PURPOSE:To obtain a new fibrous composite metal hydroxide useful as a flame- retardant having a temperature for removing a water of crystallization adjusted to a proper region, almost free from preparation of hexagonal magnesium hydroxide as a by-product to reduce reinforcing effects of a resin and rubber, to obtain a composite metal basic salt of needle-like crystal useful for producing the fibrous composite metal hydroxide and to provide a method of producing the fibrous composite metal hydroxide. CONSTITUTION:A fibrous composite metal hydroxide of formula (1) M<2+>xMg1-x(OH)2 (in the formula M<2+> is at least one of Mn, Fe, Co, Ni, Cu and Zn; (x) is 0.005<(x)<0.5) has >= about 10 ratio of length/diameter, about 0.1-10mum average diameter and about 2-1,000mum average length. A composite metal basic salt of needle-like crystal of formula (5) M2<+>xMg1-x(OH)2-zA<->z.mH2O (5) (in the formula M2<+> is as shown for formula (1); A<-> is monofunctional anion; (x) is 0.005(x)<0.5; (z) is 0.2<(z)<1). |
