Description

Siloxanes And Silicones, Di-Me, 5-Hexenyl Group-Terminated is a reactive, vinyl-functional silicone fluid or gum characterized by its terminal hexenyl groups. This structure is critical for enabling hydrosilylation reactions, making it a versatile and valuable cross-linking agent and reactive intermediate in silicone chemistry. It is primarily utilized by formulators and manufacturers in the adhesives, sealants, coatings, and specialty elastomer industries to create custom silicone networks with tailored properties.

Application

• Reactive Modifier for Silicone Elastomers: Acts as a cross-linker or chain extender in heat-cured (HCR) and liquid silicone rubber (LSR) formulations to modify elasticity, strength, and adhesion.
• Adhesive & Sealant Formulations: Used in the synthesis of specialty silicone adhesives and sealants, providing improved bonding to various substrates and enhanced mechanical properties.
• Silicone Coating Precursor: Serves as a key intermediate in the production of release coatings, protective coatings, and dielectric coatings.
• Synthesis of Specialty Silicones: A fundamental building block for creating custom silicone copolymers, graft polymers, and other advanced silicone-based materials.
• Personal Care & Cosmetic Ingredients: Used in the synthesis of silicone derivatives that provide unique sensory and performance benefits in hair and skin care products.
• Additive for Plastics & Composites: Incorporated as a reactive processing aid or compatibilizer to improve surface characteristics and processing of engineered plastics.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, 5-Hexenyl Group-Terminated
CAS No.	144669-03-4
Molecular Formula	Typically CnH2n+2OmSim (Variable polymer)
Molecular Weight	Variable (Depends on chain length, n)
Synonyms	5-Hexenyl-Terminated Polydimethylsiloxane; Vinyl-Terminated Polydimethylsiloxane (Hexenyl variant); α,ω-Bis(5-hexenyl)polydimethylsiloxane; Polydimethylsiloxane, 5-hexenyl end-capped; PDMS, 5-Hexenyl Terminated; Reactive Silicone Fluid (Hexenyl); Hexenyl-Functional Siloxane
EINECS	Contact for details

Quality Control

Our Siloxanes And Silicones, Di-Me, 5-Hexenyl Group-Terminated is manufactured under a strict quality management system. Each batch is characterized to ensure consistent functionality, including analysis of vinyl content, molecular weight distribution, and purity. Certificates of Analysis (COA) detailing key specifications are available upon request to support your quality assurance and R&D processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. To maintain reactivity and prevent premature cross-linking, store under an inert atmosphere (e.g., nitrogen) and away from substances that can initiate hydrosilylation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Grade dependent (cSt)
Vinyl Content (mmol/g)	Grade dependent
Molecular Weight (Mn)	Grade dependent
Volatile Matter	≤ 1.0%
Water Content (KF)	≤ 0.05%

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