3-Ureidopropyltriethoxysilane

Product Overview

3-Ureidopropyltriethoxysilane represents a class of high-performance organofunctional silane coupling agents designed for demanding industrial applications. Featuring a unique ureido functional group attached to a triethoxysilyl backbone, this chemical provides exceptional versatility in modifying surface properties. The ureido moiety offers strong hydrogen bonding capabilities, which significantly enhances adhesion to polar substrates while maintaining compatibility with a broad spectrum of organic polymers. Typically supplied as a 50% solution in methanol, this formulation ensures ease of handling, improved stability during storage, and seamless integration into existing manufacturing processes without requiring extensive dilution steps.

The molecular structure allows this silane to act as a molecular bridge between inorganic materials, such as glass fibers or minerals, and organic resin matrices. This interfacial bonding is critical for preventing moisture ingress and mechanical failure in composite structures. Compared to conventional aminosilanes, the ureido functionality provides a balance of reactivity and stability, making it suitable for systems where controlled curing profiles are essential. Our manufacturing process ensures high purity and consistent quality, backed by comprehensive Certificates of Analysis for every batch.

Technical Specifications

Industrial Applications

The versatility of 3-Ureidopropyltriethoxysilane makes it indispensable across several key sectors of the chemical and materials industry. Its primary function revolves around improving adhesion, mechanical strength, and environmental resistance in composite materials and coated systems.

• Composites and Glass Reinforcement: It is extensively used as a sizing agent for glass fibers and fabrics. By treating the glass surface, it ensures optimal wet-out by resin systems such as epoxy, phenolic, and polyurethanes. This results in composites with superior interlaminar shear strength and resistance to hydrolytic degradation.
• Adhesives and Sealants: As an additive in formulation, it enhances the bond strength between sealants and various substrates including metals, plastics, and concrete. It is compatible with PA, PBT, PE, EVA, PP, PVB, PVAC, acrylics, and silicones, providing a durable bond that withstands thermal cycling and humidity.
• Foundry Resins and Abrasives: In foundry applications, it serves as an additive for phenolic, furan, and melamine resins. It improves the integrity of sand molds and cores, leading to better casting surface finishes and reduced defect rates. In abrasives, it enhances the bonding of grit to the backing material.
• Coatings and Paints: When incorporated into paints and varnishes, it acts as an adhesion promoter and primer. It prevents peeling and blistering on difficult substrates, extending the service life of protective and decorative coatings.

Storage and Handling Guidelines

Proper storage is essential to maintain the efficacy of this silane coupling agent. The product should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and open flames. Containers must be kept tightly sealed to prevent moisture absorption, which can lead to premature polymerization or gelation. The flash point indicates flammability, so standard precautions for flammable liquids should be observed. We provide flexible packaging solutions, including 180 kg drums, and can customize packaging based on specific logistical requirements. Global shipping is available with full regulatory documentation.