Application of Dichloromethane

The main uses of Dichlorometane are as follows:

1. Dichloromethane has the advantages of strong solubility and low toxicity, and is widely used in the manufacture of safety film and polycarbonate.

The production process is as follows:

The raw material Bisphenol A reacts with sodium hydroxide solution to form Bisphenol A sodium salt solution, then Dichloromethane is added and phosgene is introduced at constant speed; At room temperature, the material polymerizes at the interface of alkaline aqueous solution and Dichloromethane solution to form low molecular weight PC; The low molecular weight PC was polycondensated to obtain high molecular weight polymer.

2. Dichloromethane is widely used as a film stripper for paint and water.

  The typical paint stripper with dichloromethane as the main component can contain paraffin, organic amine, lower fatty acid and alcohol, acetone and sulfonated detergent. It can also be used to prepare quick drying paint. Dichloromethane steam spray is an effective way to remove the paint on the metal surface.

3. Dichloromethane, together with F-12, can be used as low pressure propellant aerosol.

  Dichloromethane is also widely used as an auxiliary foaming agent for polyurane foam. In the urethane foam industry, dichloromethane is also used for the immediate cleaning of gates and pipes after the production process is finished.

4. Dichloromethane can be used as aerosol solvent for packaging.

Dichloromethane is also widely used in industrial cleaning operations. For example, it is used as a vapor phase degreasing agent in metal and plastic processing industry, especially suitable for cleaning products that are not resistant to trichloroethylene, tetrachloroethylene and other high temperature degreasing solvents. It can also be mixed with petroleum and other chlorinated fuels as detergents in metal manufacturing industry. The mixture of dichloromethane and toluene of equal weight has been recommended for cleaning printed type.

The above is the main use of dichloromethane produced by our company.