Hydroxyl silicone oil emulsion can be divided into cationic emulsion, negative ion emulsion, non ion emulsion and compound ion emulsion according to the different surfactants used.

1. Cationic hydroxyl silicone oil emulsion

The emulsifier used in the polymerization of hydroxyl emulsion is usually quaternary amine salt (octadecyl trimethyl ammonium chloride was reported in foreign literature), and the catalyst is ammonium hydroxide.Cationic hydroxyl emulsion can be used for finishing all kinds of textiles. It has the properties of improving fabric feel, elasticity, smoothness and crisp.Its other unique advantage is the ideal waterproof agent of fabric, and methyl containing hydrogen silicone oil emulsion, waterproof performance and waterproof durability can reach a very high level, can be used as waterproof agent of vinylon canopy-covered canvas, polyester cloth waterproof agent.

2.Anionic hydroxyl silicone oil emulsion

Anionic hydroxyl emulsion is characterized by good compatibility in fabric finishing agent and very stable emulsion.In particular, most of the auxiliaries in textile printing and dyeing are anionic. If cationic hydroxyl milk is used, it is often easy to cause broken milk and bleach oil. Anionic hydroxyl milk can avoid this disadvantage, so it is more popular with users and is very widely used.

3.Compound ionic hydroxyl silicone oil emulsion

Cationic hydroxyl emulsion is an excellent fabric softener, but the emulsion is not resistant to hard water, and can not be used with dimethyl dihydroxy ethylene urea resin (2D) resin, catalyst magnesium chloride and anionic whitening agent in the same bath, so there are certain limitations in the use.In addition, due to the poor stability of the emulsion, the silicone polymer is easy to separate from the emulsion and float on the liquid surface, commonly known as "float oil".If the cationic emulsifier and non-ionic emulsifier are used in the emulsion polymerization process, the disadvantage of preparing hydroxyl silicone oil emulsion can be overcome. The silicone emulsion can withstand hard water, be used in bath with 2D resin, magnesium chloride and whitening agent VBL, and has good heat resistance and freezing resistance.

4.Nonionic hydroxyl silicone oil emulsion

Non-ionic hydroxylated milk has better adaptability and stability than independent hydroxylated milk, so many countries are vigorously studying non-ionic hydroxylated milk.For example, the new product UltrateX FSA produced by Swiss Cibajiagji company is a kind of non-ionic emulsion with hydroxyl sealing head polydimethylsiloxane with molecular weight of more than 200,000, which is a step forward than the DC-1111 anionic hydroxyl emulsion of American Dow Corning Company.

5.Organosilicon finishing agent with other active groups

In order to meet the needs of all kinds of fabric, a senior, improve the resistance of the treated fabric silicone oil, antistatic and hydrophilic, and many of the advantages of chemical fiber fabric is natural fabric, organic silicon workers studied in organic silicon molecules on introducing other active groups such as amine, amide, ester, cyano, carboxyl, epoxy group, etc.The introduction of these groups makes the silicone fabric finishing agent has special effects. For example, the introduction of amino group is suitable for the shrinkage prevention and soft finishing of wool fabrics.The introduction of amide group is suitable for antifouling finishing, and the softness is greatly improved: the introduction of cyanide group has good oil resistance, and the copolymer of polyoxyethylene ether and silicone has good antistatic effect;The organic fluorine modified silicone has many advantages such as oil repellent, antifouling, antistatic and water repellent.