1、 What is amino silicone oil
Amino silicone oil is a type of polydimethylsiloxane with side chains or end groups containing amino groups, forming a polymer structure with Si-O-Si as the main chain. It has excellent properties such as softness, hydrophobicity, defoaming, lubricity, and gloss. Since its emergence in the 1990s, it has become an indispensable organic silicon material in the textile industry. The main use of it is as a softener for various fibers, yarns, and fabrics, known as the "king of softeners".
2、 Parameter indicators
Appearance: Colorless or pale yellow viscous liquid
Viscosity 25 ℃ MpaS: 600-100000
Ammonia value: 0.15-1.2
PH value: 8-9
Volatile matter%: ≤ 2
3、 Advantages and characteristics of amino silicone oil
Lubrication: Amino silicone oil can form a thin and stable lubricating film on the friction surface, significantly reducing friction losses and improving the comfort of textiles.
Foaming resistance: effectively inhibit the formation of foam, provide good foam discharge effect, and optimize the production process.
Thermal stability: Even in high temperature environments, amino silicone oil can maintain its properties and is not easily degraded or deteriorated, making it suitable for textiles treated at high temperatures.
Adsorption, compatibility and easy emulsification: these characteristics of amino silicone oil make it compatible with a variety of textile auxiliaries, easy to form a stable lotion, and improve the processing efficiency of textiles.
Application flexibility: It can be used alone or combined with other ingredients to meet different processing needs.
Improving fabric performance: Amino silicone oil can significantly enhance the elasticity and hand feel of fabrics, enhancing their market competitiveness.
Washing resistance: Textiles treated with amino silicone oil have good washing and dry cleaning resistance, maintaining long-lasting softness.
4、 The preparation methods of amino silicone oil with different structures include:
(1) Catalytic equilibrium between aminoalkylsilane and siloxane;
(2) Catalytic equilibrium between oxygen-containing oligomers obtained by hydrolysis of aminoalkylsilane and D4;
(3) Catalytic equilibrium between diaminopropyl tetramethyldisiloxane and D4;
(4) Addition of hydrogen containing polysiloxane with unsaturated ammonia;
(5) Anionic activity, condensation method for single ended amino silicone oil;
(6) Lotion polymerization of amino polyorganosiloxane water lotion.
In practical applications, especially as a silicone softener, the most commonly used is modified silicone oil containing diamines.
The preparation method is as follows:
Hydrolysis of supporting oligomers: Firstly, hydrolyze the aminoalkylmethyldimethoxysilane to generate supporting oligomers.
Equilibrium reaction: The above-mentioned oligomers are then subjected to equilibrium reaction with dimethylsiloxane ring and hexamethyldisiloxane under the action of alkaline catalyst, ultimately obtaining diamino modified silicone oil.
This prepared amino silicone oil has been widely used in the field of textile softeners due to its softness, smoothness, and excellent washability. By adjusting the reaction conditions and raw material ratios, amino silicone oil products with different properties can be customized to meet the softening treatment needs of different textiles.

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