The preparation method and characteristics of urushiol SiSn polymer, which was formed by reacting urushiol with SiCl 4 and SnCl 4, have been studied.

It is difficult to recycle a large amount of by product, silicon tetrachloride, which is the technical bottleneck existing in preparation of polycrystalline silicon by improved Siemens process.

The authors introduce its application in many fields and its current preparation techniques, e. g. taking montmorillonite as raw material to prepare amorphous silica by NaOH liquor lixiviation;