| abstract |
Disclosed is an aluminum complex hydroxide salt having Al hydroxide octahedral layers and divalent anions present between the octahedral layers. The divalent anions contain at least an aluminosilicate anion represented by the following general formula (1). [NapAlqSirOz]2- (1) In the formula, p, q, r and z respectively represent a positive number satisfying the following relations. 5 ≤ z ≤ 20 z = (p/2) + (3q/2) + 2r + 1, 0 < p/q < 1, 0.01 ≤ q/r ≤ 1 This aluminum complex hydroxide salt can be suitably used as a compounding agent for resins. In particular, when it is blended in films for agricultural use or the like as a heat retaining agent, it exhibits excellent heat retaining property and excellent transparency. |