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N-(n-Butyl)-3-aminopropyltrimethoxysilane: A Versatile Silane Coupling Agent

Silane coupling agents are chemical compounds that have one or more organofunctional groups (such as amino, epoxy, or vinyl) attached to a silicon atom. They are widely used in the manufacturing of various materials, including adhesives, coatings, composites, and plastics. The main function of silane coupling agents is to improve the adhesion between organic and inorganic surfaces by forming covalent bonds with both. This results in stronger and more durable bonds, as well as better wetting and dispersibility of the materials. One of the most versatile silane coupling agents is N-(n-Butyl)-3-aminopropyltrimethoxysilane, also known as Dynasylan 1189 or NBTMS.

NBTMS is a clear, colorless liquid with a typical amine odor. Its chemical formula is C11H27NO3Si, and its molecular weight is 253.44 g/mol. It has a boiling point of 257-258 °C, a flash point of 102 °C, and a density of 0.945 g/cm3 at 20 °C. NBTMS is soluble in many organic solvents, such as ethanol, acetone, and toluene, but insoluble in water. It is a reactive silane coupling agent that can react with various substrates, such as glass, metal, ceramics, and polymers.

NBTMS has several important functions in different applications. In adhesives and sealants, it acts as a coupling agent between the organic matrix and the inorganic filler, such as silica, alumina, or calcium carbonate. It improves the mechanical strength, thermal stability, and moisture resistance of the adhesive, as well as the adhesion to various substrates, such as metals, plastics, or wood. NBTMS can also act as a crosslinking agent for polyurethane, epoxy, or silicone resins, enhancing their chemical and physical properties, such as hardness, flexibility, and weatherability.

In coatings and paints, NBTMS can improve the adhesion to various substrates, such as metals, plastics, or concrete, as well as the corrosion resistance, abrasion resistance, and weatherability of the coating. It can also act as a dispersant for pigments and fillers, improving their wetting and flow properties. NBTMS can also be used as a surface modifier for glass fibers, improving their wetting and adhesion to the resin matrix in composites.

In plastics and composites, NBTMS can enhance the adhesion between the filler and the polymer matrix, as well as the mechanical and thermal properties of the composite. It can also act as a compatibilizer between different polymers, improving their miscibility and processing properties. NBTMS can also be used as a coupling agent for glass fibers, carbon fibers, or nanofillers, improving their adhesion to the polymer matrix and enhancing the strength and stiffness of the composite.

In summary, N-(n-Butyl)-3-aminopropyltrimethoxysilane is a versatile silane coupling agent that can improve the adhesion, durability, and performance of various materials. It is widely used in the manufacturing of adhesives, coatings, composites, and plastics. As a leading manufacturer and supplier of silane coupling agents, INNO Specialty Chemicals offers high-quality NBTMS and other Dynasylan products for various applications.

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