1. How is hydroxy silicone oil made?

Hydroxy silicone oil is obtained by hydrolyzing dimethyldichlorosilane with water to obtain an initial polycondensation ring body. The ring body is cracked and rectified to obtain a low ring body, and then the ring body, capping agent and catalyst are put together. Silicone oil can be obtained from mixtures of various degrees of polymerization and distillation under reduced pressure to remove low boilers.

The most commonly used silicone oil, all organic groups are methyl, called methyl silicone oil. The organic group can also use other organic groups to replace part of the methyl group to improve certain properties of the silicone oil and apply to various uses.

Common other groups are hydrogen, ethyl, phenyl, chlorophenyl, trifluoropropyl, etc. In recent years, organo-modified silicone oil has developed rapidly, and many organo-modified silicone oils with special properties have appeared.

2. The characteristics and structure classification of modified silicone oil

Silicone oil is generally colorless (or pale yellow), odorless, non-toxic, and non-volatile liquid. Silicone oil is insoluble in water, methanol, glycol and ethoxyethanol, miscible with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene, slightly soluble in acetone, dioxane, ethanol and butanol. It has a small vapor pressure, high flash point and ignition point, and low freezing point.

As the number of segments n increases, the molecular weight increases and the viscosity increases, so silicone oil can have various viscosities, from 0.65 centistokes to millions of centistokes. If low-viscosity silicone oil is to be prepared, acid clay can be used as a catalyst for telomerization at a temperature of 180 °C, or sulfuric acid is used as a catalyst for telomerization at low temperature to produce high-viscosity silicone oil or viscous material with alkaline catalyst.

Silicone oil is divided into methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropane according to chemical structure. Base silicone oil, methyl vinyl silicone oil, methyl hydroxy silicone oil, ethyl hydrogen-containing silicone oil, hydroxyl hydrogen-containing silicone oil, cyano-containing silicone oil, etc.; in terms of use, there are damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulating oil, heat transfer oil, brake oil, etc.

Co-Formula products are commonly used as coupling agents, crosslinkers, adhesion promoters, surface modifiers, primers, dispersants, finishes and water scavengers.

Co-Formula always works with customers to develop what they want and strive to meet their needs. If necessary, welcome to consult.