Silicone softener originated in the 1950s, the development has experienced four stages: one is the first generation of silicone softener.

  In 1940, attempts were made to impregnate fabrics with dimethyldichlorosilane, which achieved some waterproofing.In 1945, Elliott et al of GENERAL Electric (GE) soaked fiber in alkaline aqueous solution with sodium methyl silanol, which made the fiber have good waterproof effect after heating.In the early 1950s, Dow Corning (Dow Corning) found that the fabric treated with polysiloxane containing SI-H structure had good waterproof effect and good air permeability, but the hand feeling was poor and the silicone film was hard and brittle and easy to fall off. After it was combined with polydimethylpolysiloxane (PDMS), it not only had good waterproof effect. And soft to the touch.Since then, despite the rapid development of silicone products around the world, many kinds of products, but basically belong to the mechanical mixture of dimethyl silicone oil, collectively known as silicone oil products, that is, the first generation of silicone fabric softener.

  The first generation of silicone softener uses mechanical emulsification method to emulsify silicone oil directly, but because silicone oil itself does not contain active groups, it is not firm enough to combine with fabric, and it is not washable, so the effect is not ideal when used alone.

  The second generation of silicone softener.To overcome the shortcomings of the first generation of silicone softeners, researchers have found a second generation of silicone emulsions with hydroxyl caps.The softener mainly consists of hydroxyl silicone oil emulsion and hydrogen-containing silicone oil emulsion. In the presence of metal catalyst, the fabric can form a network cross-linking structure on the surface of the fabric, so that the fabric has good softness, water resistance and stability.However, due to the existence of a single function, easy to break in the use of oil and other problems, has not been widely used to be replaced by the third generation of silicone softener.

  Third generation silicone softener.The third generation of organic silicon softener is appearing in recent years and develop fast Z type of softener, this kind of product is through the main chain or side chain of polysiloxane, the other chain segments or reactive group is introduced in such as polyether base, epoxy group, alcoholic hydroxyl, amino, carboxyl, ester, thiol groups, such as can improve greatly the fabric softness and all aspects of the comprehensive performance, And depending on different groups to give different styles of fabric.However, the third generation of silicone softener generally needs to be mixed with mono-functional agglutinated siloxane to achieve the desired treatment effect, and the ratio of mixing is not easy to grasp, which has a great impact on production and application.

  The fourth is the fourth generation of silicone softener.The fourth generation of silicone softener is based on the finishing effect required by the fabric, the third generation of silicone softener is further modified, the introduction of more active groups, without the need to compound can meet the needs of all aspects of the fabric processing.The fabric treated by modified silicone softener with a variety of active groups has a greater degree of improvement in softness, water resistance, elasticity and hydrophilicity, etc., to meet the various needs of users on the fabric, has become the mainstream direction of silicone softener development.

  Historically known as "Silicone," polysiloxane is now found in certain Settings, such as catalogs.In China, silane monomer and polysiloxane are commonly referred to as silicone compounds, and polysiloxane liquid is called silicone oil, polysiloxane rubber is silicone rubber, polysiloxane resin is silicone resin.

  The main chain structure of polysiloxane is Si-O-Si structure, essentially the same as quartz, the difference lies in its side groups connected with organic groups.

  The effect of polysiloxane

  There are very few new cosmetic formulations that do not contain siloxanes, which have seen significant growth in their use in personal care products.In addition, even formulators with advanced Z technology will inevitably use siloxane.