April 02, 2024

Silicone surfactant is a kind of surfactant used in large amount in the daily chemical industry, and it can be used as an emulsifier in various cosmetics. Used in essence and shampoo, it has the functions of emulsification, foaming, dispersion and solubilization, which can make the foam of shampoo rich, fine and stable, and has anti-static effect. Silicone surfactants have no side effects on the human body, can form a protective film of the fat layer on the skin surface, prevent skin dryness, and are excellent skin lubricants and moisturizers, especially as emulsifiers and emulsion stabilizers for the preparation of face and eye department of cosmetics.

According to the type of hydrophilic group, surfactants can be divided into four types: cationic, anionic, nonionic and zwitterionic. Silicone surfactants can also be classified in this way. The hydrophobic groups of silicone surfactants are composed of Alkyl siloxanes with stronger hydrophobicity than carbon chains have stronger surface activity than carbon chains, and have lower surface tension in solutions of the same concentration. The application of silicone surfactants in personal care products is mainly polyether silicone surfactants. Cationic silicone surfactants, especially quaternized polysiloxanes, are the best conditioners for hair care and hairdressing .

Anionic silicone surfactants include carboxylic acid type, sulfonic acid type, sulfate ester type and phosphate ester type. Conversion of base intermediates. Phosphate ester silicone surfactants are the most common. The products are phosphorylated by siloxane alcohols, and then neutralized and refined as needed. Polysiloxane phosphate not only has the emulsification, foaming and mild washing properties of phosphoric acid group, but also has non-ionic properties such as the cloud point of polyether, and also has the affinity of polysiloxane to skin and hair. It can be used as high-efficiency W/O emulsifier, solubilizer, water-soluble foaming agent, detergent, emollient and hair conditioner in cosmetics. Polysiloxane phosphate surfactants have emulsifying properties and also have wetting properties, and are mainly used in emollient skin care products and conditioning hair care products. In hair care products, phosphate esters can delay the accumulation of static electricity and accelerate discharge, and polysiloxane has good affinity and conditioning properties for skin and hair, so it can improve the dry and wet compatibility of hair.