Description

Epoxypropoxypropyl Terminated Polydimethylsiloxane is a specialized organosilicon compound featuring reactive epoxy groups at the polymer chain ends. This unique structure provides exceptional compatibility and adhesion-promoting properties, making it a crucial reactive intermediate and additive. It is primarily used in advanced material science to enhance the performance and durability of coatings, adhesives, and composite materials. Industries such as electronics, aerospace, and high-performance sealants rely on this modifier to achieve superior surface wetting, flexibility, and chemical resistance.

Application

• Reactive Modifier for Epoxy Resins: Enhances flexibility, impact resistance, and thermal shock performance in epoxy-based composites and adhesives.
• Primer and Coupling Agent: Improves adhesion between organic polymers and inorganic substrates like glass, metals, and minerals.
• Silicone Hybrid Material Synthesis: Serves as a key intermediate for creating silicone-organic copolymers with tailored properties.
• Surface Treatment for Fillers: Used to modify the surface of silica, glass fibers, and other fillers to improve dispersion in polymer matrices.
• Release Coatings and Molding: Imparts non-stick and easy-release characteristics in specialized molding applications.
• Electronic Encapsulants and Potting Compounds: Contributes to stress relief and moisture protection in sensitive electronic components.

Basic Information

Product Name	Epoxypropoxypropyl Terminated Polydimethylsiloxane
CAS No.	102782-97-8
Molecular Formula	CnH2n+2O3Si(n/2) (Polymeric)
Molecular Weight	Varies by chain length (n). Contact for details.
Synonyms	Poly(dimethylsiloxane), 3-(2,3-epoxypropoxy)propyl-terminated; Glycidoxypropyl Terminated Polydimethylsiloxane; Epoxy-Functional Polydimethylsiloxane; PDMS, epoxypropoxypropyl terminated; Silicone fluid, epoxy functional; Epoxy-modified silicone oil; (Oxiran-2-ylmethoxy)propyl-terminated PDMS; GLYMO-terminated PDMS
EINECS	Contact for details.

Quality Control

Our Epoxypropoxypropyl Terminated Polydimethylsiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as epoxy value, viscosity, and silicon content. Certificates of Analysis (COA) documenting purity, identity, and assay are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect reactivity. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Epoxy Value (equiv./100g)	Contact for details
Viscosity @ 25°C (cSt)	Specified per grade
Specific Gravity @ 25°C	0.97 - 1.05
Refractive Index @ 25°C	1.405 - 1.425
Water Content (KF)	< 0.1%

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