Modified silicone oil is a type of organic silicon compound, typically modified from basic materials such as polydimethylsiloxane (PDMS) or polyethylene glycol (PEG). The following is a detailed introduction about modified silicone oil:

1、 Definition and Structure
Modified silicone oil refers to a special silicone oil in which some of the methyl groups in the methyl silicone oil molecules are replaced by various organic groups, thereby possessing the property of mutual influence between organic groups and dimethyl silicone oil. The structure of modified silicone oil can be varied according to different application needs and the position of organic groups. For example, organic groups can be introduced into some branches, one end, or both ends of polydimethylsiloxane.

2、 Characteristics
Stability: Modified silicone oil has better stability, including thermal oxidation and chemical stability.
Permeability: Modified silicone oil has excellent permeability and can penetrate into various materials.
Reactivity: By introducing various organic groups, modified silicone oil can react with different organic materials, endowing the product with specific properties.
Coating properties: Modified silicone oil has good coating properties and can form a uniform and smooth coating on the surface of the material.
Other characteristics: Modified silicone oil also has various properties such as hydrophilicity, oleophilicity, lubricity, defoaming, etc.

3、 Production and Preparation
The production of modified silicone oil usually involves adding cyclic siloxanes, polyethers, catalysts and other raw materials in a certain proportion to a reaction vessel for polymerization reaction. After the reaction is complete, add a capping agent to stop the reaction and perform vacuum degassing treatment to remove unreacted monomers and low molecular weight by-products. Finally, the modified silicone oil produced will be filtered, tested, and packaged.

4、 Application Fields
Cosmetics: Modified silicone oil is one of the most common cosmetics additives, which is widely used in liquid foundation, lipstick, eye shadow, eye black and other products to improve its ductility and texture.
In the field of daily necessities, modified silicone oil can be used to manufacture various products such as shampoo, conditioner, laundry detergent, etc., which can improve the glossiness, touch and stability of the products.
In the field of medical devices, modified silicone oil can be used as medical emulsions, oral care agents, etc., which can enhance the permeability and stability of products and improve the release rate of drugs.
In the field of lubricating oil, modified silicone oil is widely used in the lubrication of various mechanical equipment due to its good corrosion resistance, high temperature stability, and good adhesion properties.
In the field of construction, modified silicone oil can be used in surface treatment agents, waterproofing agents, and other building materials to enhance their water resistance and corrosion resistance.

5、 Development Trends
With the advancement of technology and the increasing demand for product performance, the application fields of modified silicone oil will continue to expand. At the same time, in order to meet market demand, manufacturers of modified silicone oil will continue to innovate and improve production processes to enhance product performance and quality.