Description

Siloxanes And Silicones, Di-Me, Hydrogen- And Vinyl Group-Terminated is a specialized organosilicon compound featuring both reactive hydrogen and vinyl end groups on a dimethylsiloxane backbone. This unique bifunctional structure makes it a highly versatile intermediate for crosslinking and chain extension in silicone polymer synthesis. It is essential for manufacturers requiring precise control over polymer architecture, elasticity, and thermal stability. Key industries that utilize this material include advanced silicone elastomers, release coatings, and high-performance adhesives and sealants.

Application

• Crosslinking Agent for Silicone Elastomers: Serves as a key reactive component in heat-cured (HCR) and liquid silicone rubber (LSR) formulations, enabling the formation of durable, flexible networks.
• Intermediate for Silicone Copolymers: Used in the synthesis of custom silicone-organic hybrids, block, and graft copolymers for tailored material properties.
• Release Coating Formulations: Acts as a reactive modifier in platinum-catalyzed addition cure systems for paper, film, and industrial release liners.
• Adhesive and Sealant Precursor: Provides reactive sites for formulating high-performance, weather-resistant adhesives, sealants, and potting compounds.
• Surface Modification Agent: Used to graft functional silicone layers onto inorganic or organic substrates to alter surface energy and reactivity.
• Fabric and Fiber Treatment: Imparts softness, water repellency, and durability to textiles and non-woven materials.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, Hydrogen- And Vinyl Group-Terminated
CAS No.	104780-63-4
Molecular Formula	Contact for details
Molecular Weight	Varies by chain length (n)
Synonyms	α,ω-Dihydrogen-α,ω-Divinylpolydimethylsiloxane; Vinyl-Terminated Hydrogen Siloxane; Hydrogen and Vinyl Terminated PDMS; Poly(dimethylsiloxane), hydrogen and vinyl terminated; Bifunctional Hydrogen/Vinyl Siloxane; Reactive Silicone Fluid; Siloxane copolymer with vinyl and hydride end groups
EINECS	Contact for details

Quality Control

Our Siloxanes And Silicones, Di-Me, Hydrogen- And Vinyl Group-Terminated is produced under strict quality management systems to ensure batch-to-batch consistency and reliability. Each lot is analyzed to confirm critical parameters such as vinyl content, hydride (Si-H) content, viscosity, and molecular weight distribution. A comprehensive Certificate of Analysis (COA) detailing these specifications is provided with every shipment. We support customer compliance needs for various industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, it is recommended to keep under an inert atmosphere (e.g., nitrogen or argon) to preserve reactivity. Keep away from heat, sparks, open flames, and incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Viscosity (25°C)	Specification available upon request
Vinyl Content (mmol/g)	Specification available upon request
Hydrogen (Si-H) Content (mmol/g)	Specification available upon request
Water Content	< 200 ppm

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