IOTA 560, chemically known as 3-(2,3-epoxypropoxy)propyltrimethoxysilane (CAS No. 2530-83-8), is an epoxy-functional silane coupling agent. Its molecules contain both reactive epoxy groups and hydrolyzable trimethoxy groups. It is widely used for the surface modification of inorganic powders and fibers to improve the interfacial compatibility between inorganic fillers and polymer matrices, serving as a common interfacial modification additive in the textile and composite materials industries.

IOTA 560 (3-(2,3-epoxypropoxy)propyltrimethoxysilane; CAS: 2530-83-8) is a transparent liquid epoxy silane coupling agent and a classic raw material for the modification of powders and textile materials. Its core advantage lies in its unique bifunctional structure: the trimethoxy groups at one end of the molecule undergo hydrolysis in the presence of water to form silanol groups, which can then condense with hydroxyl groups on the surfaces of inorganic materials—such as inorganic powders or glass fibers—to create stable siloxane (Si-O-Si) chemical bonds. Meanwhile, the epoxy group at the other end can react with active groups (such as hydroxyl or carboxyl groups) present on polymer resins or fiber macromolecules, effectively building a molecular bridge between the inorganic phase and the organic polymer matrix.

The trimethoxy groups exhibit high hydrolytic reactivity, enabling rapid grafting and modification of inorganic substrate surfaces. The product offers excellent compatibility with organic polymer systems and is easy to incorporate, making it suitable for a variety of processes, including dry-method powder modification, wet-method fiber padding, and textile finishing.

Core Modification Functions of IOTA 560
Inorganic Powder Modification: Reduces powder agglomeration, enhances interfacial bonding between inorganic fillers and polymer matrices, and optimizes the mechanical properties of composite materials.
Fiber Modification: Improves fabric softness, tensile strength, and abrasion resistance; enhances hydrophobicity, oil repellency, and the stability of dye fixation.
Textile Finishing: Optimizes fabric hand-feel and appearance, while increasing long-term durability.
Textile Composites: Strengthens the interfacial adhesion between fibers and resins, improves mechanical performance and aging resistance; suitable for applications in automotive interiors and construction materials.

Applicable Scenarios
Surface modification of inorganic powders; modification of glass fibers/textile fibers; functional textile finishing; formulations for fiber-reinforced textile composites.