Description

Triethoxysilyl Modified Poly-1,2-Butadiene is a specialty organosilicon polymer that combines the flexible backbone of polybutadiene with reactive triethoxysilyl functional groups. This unique structure provides excellent adhesion to inorganic substrates like glass, metals, and minerals, while maintaining compatibility with organic polymer matrices. It is a critical component for formulators in the adhesives, sealants, coatings, and composite materials industries seeking to enhance bonding, moisture resistance, and mechanical properties.

Application

• Adhesive & Sealant Formulations: Acts as a key adhesion promoter and coupling agent in high-performance silicone, polyurethane, and MS polymer sealants and adhesives.
• Surface Modification & Primers: Used to treat glass fibers, minerals, and metal surfaces to improve the interfacial adhesion in composite materials.
• Rubber & Tire Industry: Functions as a coupling agent in silica-filled rubber compounds to reduce rolling resistance and improve wet grip in tire manufacturing.
• Coatings & Inks: Incorporated into coatings to enhance adhesion to difficult substrates and improve durability and weather resistance.
• Polymer Modification: Used as a reactive modifier for various polymers to introduce crosslinkable silyl groups, improving thermal and chemical resistance.
• Encapsulation & Potting Compounds: Enhances the moisture resistance and adhesion of electronic encapsulation materials.

Basic Information

Product Name	Triethoxysilyl Modified Poly-1,2-Butadiene
CAS No.	72905-90-9
Molecular Formula	(C4H6)n modified with (C2H5O)3Si- groups
Molecular Weight	Varies (Polymer)
Synonyms	Polybutadiene, triethoxysilyl-modified; Silylated Polybutadiene; Triethoxy(butadiene polymer)silane; Poly(1,2-butadiene) silane terminated; Silane-modified polybutadiene; PBd-Si(OEt)3; Adhesion promoter for silica-filled rubber
EINECS	Contact for details

Quality Control

Our Triethoxysilyl Modified Poly-1,2-Butadiene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of silyl content, molecular weight distribution, viscosity, and purity. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to guarantee compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and premature condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Complies
Assay (Silyl Content)	Contact for details
Viscosity (25°C)	Contact for details
Molecular Weight (Mw)	Contact for details
Moisture Content	< 0.5%
Specific Gravity (25°C)	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.