LAYERED DOUBLE HYDROXIDE IN WHICH HYDROGEN PHOSPHATE ION IS INTERCALATED, FLAME RETARDANT CONTAINING LAYERED DOUBLE HYDROXIDE, FLAME-RETARDANT SYNTHETIC RESIN COMPOSITION, AND METHOD FOR PRODUCING LAYERED DOUBLE HYDROXIDE

摘要

PROBLEM TO BE SOLVED: To provide a layered double hydroxide which is excellent in formability, has an endothermic peak shifted to a high temperature side, and is suppressed in weight reduction in middle and low temperature ranges along with the shifted endothermic peak; a flame retardant; and a method for producing the same.;SOLUTION: There are provided a phosphorus-containing layered double hydroxide which is composed of a basic layer formed from a metal double hydroxide represented by a formula (I): [M²⁺_1-xM³⁺_x(OH)₂], (where M²⁺ is Mg²⁺, M³⁺ is Al³⁺, and 0.2≤x≤0.33), hydrogen phosphate ions intercalated in the intermediate layer of the basic layer and interlayer water; a flame retardant containing the layered double hydroxide; a flame-retardant synthetic resin composition; and a method for producing the layered double hydroxide.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2017,JPO&INPIT