Patent ID: 6835320
Filing Date: 2004-12-28
Classification: B01J,C01G,C01P,C07F

Abstract:
A composite metal polybasic salt having a chemical composition represented by the following general formula (1),MgaZnbM3x(OH)y(A)z.nH2Oâ€ƒâ€ƒ(1) wherein M3 is a trivalent metal, A is a sulfuric acid ion, and a, b, x, y and z are numbers satisfying the following formulas,i) 0&lE;a, 0ii) 3x+2(a+b)âˆ’yâˆ’mz=0 (wherein m is a valency of anion A), iii) 0.3&lE;(a+b)/x&lE;2.5, iv) 1.5&lE;y/(x+a+b)&lE;3.0, and v) 4.0&lE;(x+a+b)/z&lE;20.0, and n is a number of not larger than 7, exhibiting diffraction peaks at 2&thgr;=2 to 15Â°, 2&thgr;=19.5 to 24Â°, a single peak at 2&thgr;=33 to 50Â°, and a single peak at 2&thgr;=60 to 64Â° in the X-ray diffraction (Cu-&agr;).