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Silane USi-2311 – 3-Glycidoxypropyldimethoxymethylsilane
Epoxy-Functional Methoxysilane for Water-Stable Adhesion & Single-Component Crosslinking
CAS No.: 65799-47-5
EINECS No.: 265-929-8
Molecular Weight: 220.34 g/mol
Synonyms: (3-Glycidoxypropyl)methyldimethoxysilaneSilane USi-2311 is a unique epoxy-functional alkoxysilane featuring one glycidyl (epoxy) group and two hydrolyzable methoxy groups on a methyl-substituted silicon center. It serves as a highly effective adhesion promoter and water-stable crosslinker, enabling the formulation of single-component waterborne systems with superior durability.
🧪 Product Description
Chemical Formula: C₉H₂₀O₄Si
Chemical Structure:
![Structure: CH₂(O)CH–CH₂–O–(CH₂)₃–Si(CH₃)(OCH₃)₂]USi-2311 combines reactive epoxy functionality with controlled silanol condensation, making it ideal for pH-neutral to mildly alkaline aqueous systems (pH 6–8.5). Unlike traditional alkoxy silanes, its methyl group enhances hydrolytic stability—enabling true single-component waterborne adhesive and sealant formulations without premature gelation.
📊 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 Density (20°C) 1.015 – 1.025 g/cm³ Refractive Index (nD25) 1.427 – 1.437 Purity (GC, %) ≥ 95.0%
🏭 Key Applications
🔹 Single-Component Waterborne Adhesives
- Replaces traditional 2-part systems in:
- Automotive laminate adhesives
- Furniture laminate bonding
- Flocking adhesives
- Offers water-stable crosslinking without added catalysts
- Benefits:
✅ Reduced scrap
✅ Improved process efficiency
✅ Lower crosslinker toxicity
🔹 Adhesion Promoter in Waterborne Systems
- Dramatically improves wet and dry adhesion of:
- Acrylic sealants
- SBR, PU, and acrylic latexes
- Forms durable covalent bonds between organic polymers and inorganic substrates (glass, metal, minerals)
🔹 Compatibility with Carboxylated Latexes
- Especially effective in formulations based on:
- Acrylic emulsions
- Styrene-butadiene rubber (SBR)
- Polyurethane dispersions (PUD)
- Stable in systems with pH 6–8.5
🔹 Formulation Simplification
- Enables transition from multi-component to user-friendly single-component products
- Extends pot life while delivering robust final cure via moisture-triggered silanol condensation
📦 Packaging
Available in industrial-grade containers:
- 25 kg pail
- 200 kg drum
- 1,000 kg IBC tote
All packaging ensures moisture protection for optimal shelf stability.
⚠️ Safety & Storage
- Store in original unopened containers at or below 35°C
- Keep away from heat and open flame
- Shelf Life: 12 months from production date under recommended conditions
- Use appropriate PPE and handle in well-ventilated areas
- Consult the latest Safety Data Sheet (SDS) at www.usi-chemical.com or upon request
📞 Contact Us
Nanjing Union Silicon Chemical Co., Ltd.
Specialist in Advanced Silane Coupling Agents & Organofunctional Silanes- 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 - Tel: +86-25-5889 5266 / 5889 5699
- Fax: +86-25-5830 5349
- Website: www.usi-chemical.com
- Email: service@usichemical.com
- Replaces traditional 2-part systems in:
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