双锑(III)氧化二锡(IV) 、 氯化锑(V) 、 Wismutnitrat 在
锰 作用下,
以to obtain a mixed acid of antimonic acid and bismuthic acid (referred to as "bismuth antimonate (molar ratio of Sb:Bi is 1:1)" hereinafter)的产率得到antimonic acid
Dipotassium;hydroxy-[hydroxy(oxido)stiboryl]oxystibinate 、 四氯化锡 、 锑 、 锡 、 盐酸 以In accordance with the procedure of Example 1 there was obtained a composite acid tin antimonate (1:1.8)的产率得到双锑(III)氧化二锡(IV)
This invention provides an insulating protective material effective for protection of electronic and electric devices such as electronics elements. This insulating protective material contains at least one hydrous oxide of a metal which has ion exchange properties together with a fusion bonding component such as low-melting glass, epoxy resin, phenolic resin, silicone resin, etc. and a filler such as fused silica, .beta.-eucryptite, glass fiber, glass beads, etc. Said specific hydrous oxide can be used together with a sulfur-containing organic high molecular weight compound. The hydrous oxides used in protective materials as a sealing material for electronic and electric devices can capture an ionic impurity eluted from the components of the protective material and fix it therein thereby to provide stable electronic materials excellent in performance.