SST -BBE1.2

Poly(2-bromoethylsilsesquioxane). It is a thermally & UV labile sesquioxanes containing -electron withdrawing groups that can further be converted to silicon dioxide via elimination and hydrolysis at low temperatures or under UV exposure. The thermal reaction cascade for beta substituted silsesquioxanes leading to SiO₂ a rich structure with a low level of carbon occurs at temperatures above 180°. It converts to SiO₂ by UV and has 14-16% solution in methoxypropanol. Used in encapsulant applications.