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Silane USi-9302 – γ-Ureidopropyltriethoxysilane (30–50% in Methanol)
Uramido-Functional Silane Solution for Enhanced Adhesion & Composite Performance
CAS No.: 116912-64-2
EINECS No.: 245-876-7
Molecular Weight: 264.39 g/mol
Chemical Name:
gamma-Ureidopropyltriethoxy silane (as 30–50% solution in methanol)
Synonyms:
Triethoxy-3-ureidopropylsilaneSilane USi-9302 is a ready-to-use uramido-functional silane solution designed for seamless integration into glass fiber sizing, foundry resins, and adhesive formulations. By combining the strong coupling ability of a triethoxysilane with the flexible, hydrogen-bonding urea group—and delivering it in a methanol carrier—USi-9302 ensures excellent substrate wetting, compatibility, and processing ease without the handling challenges of neat silanes.
🧪 Product Description
Chemical Structure:
H₂N–CO–NH–(CH₂)₃–Si(OC₂H₅)₃ (diluted in methanol)USi-9302 leverages a smart formulation approach:
- The γ-ureidopropyl group provides robust adhesion through hydrogen bonding and reactivity with amino-, epoxy-, and isocyanate-functional polymers
- The triethoxy silane end bonds covalently to glass, minerals, and metals upon hydrolysis
- Supplied as a 30–50% solution in methanol to:
- Reduce viscosity for easy mixing and application
- Enhance compatibility with polar resin systems (phenolic, furan, melamine)
- Improve safety and handling vs. concentrated forms
✅ Key Advantage: A user-friendly, pre-diluted uramido silane that delivers high performance in industrial processes where direct addition of neat silanes is impractical.
📊 Typical Technical Data
The following values are typical and not intended for specification. Please confirm with our technical team before finalizing product requirements.
Parameter Specification Appearance Colorless transparent liquid Specific Gravity (20°C) 0.915 – 0.925 g/cm³ Refractive Index (nD20) 1.4380 – 1.4480 Active Content (GC, %) 30–50% γ-ureidopropyltriethoxysilane in methanol
🏭 Key Applications
🔹 Glass Fiber Sizing & Composites
- Essential component in sizing formulations for E-glass and specialty fibers
- Promotes strong, durable bonding between glass fabric and thermoset matrices (epoxy, polyester, vinyl ester)
- Enhances mechanical strength, moisture resistance, and fatigue performance of FRP composites
🔹 Foundry Resin Systems
- Added to phenolic, furan, and melamine resins used in shell molding and core binders
- Improves sand-resin adhesion, green strength, and thermal stability during metal casting
- Reduces binder consumption while maintaining mold integrity
🔹 Sealants, Adhesives & Coatings
- Acts as an adhesion promoter and crosslinking modifier in:
- Polyurethane sealants
- Epoxy structural adhesives
- Industrial primers and varnishes
- Boosts wet adhesion, long-term durability, and flexibility at the coating-substrate interface
🔹 Primer for Difficult Substrates
- Used in pre-treatment solutions for glass, metals, and mineral-filled plastics to ensure reliable topcoat adhesion
📦 Packaging
Available in standard industrial containers:
- 20 kg pail
- 180 kg drum
- 900 kg IBC tote
(Note: Methanol-based solutions require compliance with local flammable liquid regulations)
⚠️ Safety & Storage
- Flammable liquid (due to methanol content)—keep away from heat and open flame
- Store in original unopened containers at or below 35°C
- Shelf Life: 12 months from production date under recommended conditions
- Use in well-ventilated areas; wear appropriate PPE (gloves, goggles, respirator if needed)
- Consult the latest Safety Data Sheet (SDS) at www.usi-chemical.com or upon request
📞 Contact Us
Nanjing Union Silicon Chemical Co., Ltd.
Your Reliable Source for Formulated Uramido Silane Solutions- Headquarters:
Room 2002, Overseas Chinese Plaza, No.1 Daqiao North Road, Nanjing 210031, Jiangsu, P.R. China - Factory Address:
Dongcheng Guanli District, Gaizhou 115200, Liaoning, P.R. China - Website: www.usi-chemical.com
- Email: inquiry@usichemical.com
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