Silicone resin is a semi - inorganic and semi - organic polymer with - Si - O - as the main chain and organic groups on the side chain. Silicone is a polymer with multiple active groups.
The advantages of silicone resin have high and low temperature resistance, weather resistance, detest water moisture-proof, fire prevention, high insulation coating, corrosion resistance, etc. The solvent of general silicone resin is mainly xylene, which is mainly used as the base resin of heat resistant coatings, weather resistant coatings and high temperature resistant materials. For example, IOTA 1056 and IOTA 1046.

1 methyl silicone resin
Using methyl chlorosilane as the main raw material to synthesize methyl silicone resin, because of the different structure and composition of silicone resin (the crosslinking degree of silicone resin, need to adopt different synthesis process conditions. Methyl silicone resin can be prepared directly by hydrolysis of methyl trichlorosilane or methyl triethoxysilane.
Methyl trichlorosilane reacts directly with water to form methyl silicone. However, because methyltrichlorosilane contains three active Cl atoms, the hydrolysis and polycondensation reaction is very fast, especially under the condition of high reaction temperature and high concentration of hydrochloric acid, the obtained methylsilicone resin is often a highly cross-linked, insoluble and nonmelting white solid. In order to produce a soluble and fusible product, hydrolysis reactions are usually carried out under moderate conditions, such as excessive ice-water or organic solvents.

2 methyl phenyl silicone resin
Industrialized production of methyl phenyl silicone resin is the main raw material of methyl trichlorosilane, dimethyl dichlorosilane, phenyl trichlorosilane, diphenyl chlorosilane, some or all of the above monomers solvent toluene, xylene, or mixed in certain proportion and, under stirring drops to the water, control the temperature of hydrolysis reaction, after the water washing to remove reaction by-products HCl (hydrochloric acid aqueous solution), Hydrolyzed silanol solution was obtained, and then part of the solvent was steamed into concentrated silanol, and then the silicone resin was prepared by cold condensation or hot condensation reaction. Finally, the finished silicone resin was obtained by filtration and packaging.