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Brominated butyl rubber (BIIR) is a modified product of IIR. The purpose of modification is to improve the activity of IIR, improve its compatibility with unsaturated rubber, improve self-adhesive, mutual adhesive and co crosslinking ability, and maintain the original characteristics of IIR. The bromination of IIR not only increases the crosslinking position, but also enhances the reactivity of the double bond. 

Bromination of aromatic hydrocarbons is one of the most important unit reactions in fine organic synthesis, and it is also a widely studied chemical reaction. Brominated products are important intermediates or starting materials for the synthesis of fine chemicals such as pharmaceuticals, pesticides, dyes, flame retardants, fire extinguishing agents, etc. Brominated reagents used in traditional bromination reactions include bromine

Silane (hereinafter referred to as "silane") is a colorless, very active compressed gas under normal temperature and pressure. It can ignite spontaneously in air, is flammable and explosive, and its chemical molecular formula is SiH4. Electronic grade silane gas is mainly obtained from silicon powder, hydrogen, silicon tetrachloride

Silane, the compound of silicon and hydrogen, is the general name of a series of compounds. Silane mainly includes silyl (SiH4), ethylsilane (si2h6) and some more advanced silyl compounds, with the general formula of sinh2n+2. Among them, silane is the most common silane, sometimes also referred to as silane for short. Silane can be obtained by different preparation methods,

Electronic gas is an indispensable raw material for semiconductor manufacturing industries such as integrated circuits, display panels, solar cells and so on. It is widely used in ion implantation, etching, vapor deposition, doping and other links, and is very important for the final yield and reliability of devices. 

Ammonia escape refers to the phenomenon that in the industrial process containing ammonia, ammonia fails to participate in the reaction or be effectively collected as expected, but is leaked from the system or released into the environment.

Ammonia has some important physicochemical properties and is widely used. First, ammonia is a colorless, pungent gas with high solubility. It has a low boiling point and freezing point, so it will volatilize rapidly at room temperature. In addition, ammonia is flammable at high temperatures and should be handled with caution.

Ammonia is an important chemical raw material with a wide range of uses. It is commonly used in the production of synthetic ammonia, fertilizer manufacturing (ammonia is used to make ammonium sulfate, ammonium nitrate, ammonium bicarbonate, urea and other fertilizers), synthetic fiber, leather, medicine, plastics, dyes and other manufacturing industries. Under normal conditions, ammonia is colorless and has a strong irritating odor. 

Germane (geh4) and ethylgermane (ge2h6) are key gas materials for the electronic industry, which play an important supporting role for the sustainable development of the entire industry. Germane is mainly used to deposit SiGe (silicon germanium) layer on silicon wafer in the semiconductor process. SiGe materials have high carrier mobility and continuously adjustable band width with the change of Ge composition. Therefore, SiGe materials have great application value in microelectronics and optoelectronics.

polycarbonate: it has high transparency, impact resistance and dimensional stability. The visible light transmittance of 2 mm thin plate is 90%, and the melting range is 220 ~ 240 ℃. The scale of a single unit of phosgene process reaches 60000 tons / year; The scale of single unit of non phosgene process reaches 100000 tons / year.polyphenylene sulfide: it has excellent thermal stability, chemical stability and electrical properties, weight average molecular weight ≥ 40000, crystallization melting point ≥ 280 ℃, and glass transition temperature ≥ 90 ℃. The scale of a single unit reaches 10000 tons / year.