Description

Siloxanes And Silicones, Di-Me, Me Hydrogen, Hydrogen-Terminated, Reaction Products With Vinyl Group-Terminated Di-Me Siloxanes is a specialized reactive silicone intermediate, CAS No. 180131-43-5, engineered for cross-linking and chain extension in high-performance silicone formulations. This product matters because it provides a unique combination of Si-H and Si-Vinyl reactive groups, enabling precise control over polymer architecture and properties. It is essential for manufacturers in the silicone rubber, adhesives, and release coatings industries who require tailored rheology, adhesion, and thermal stability.

Application

• Cross-linking Agent for HTV/High-Temperature Vulcanizing Silicone Rubber: Provides excellent heat resistance and mechanical strength in molded and extruded parts.
• Key Intermediate for Silicone Release Coatings: Used in formulations for paper, film, and foil liners, offering controlled release force.
• Building Block for Specialty Silicone Adhesives & Sealants: Enhances adhesion to difficult substrates and improves elasticity.
• Reactive Modifier for Silicone Resins: Imparts flexibility and improves compatibility in composite and coating systems.
• Hydrosilylation Reaction Component: Serves as a core material in the platinum-catalyzed addition curing of liquid silicone rubbers (LSR).
• Synthesis of Custom Siloxane Copolymers: Enables the creation of polymers with specific functional group placement for advanced material science.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, Me Hydrogen, Hydrogen-Terminated, Reaction Products With Vinyl Group-Terminated Di-Me Siloxanes
CAS No.	180131-43-5
Molecular Formula	Typically a mixture; Contact for details
Molecular Weight	Varies by grade; Contact for details
Synonyms	Hydrogen-Terminated and Vinyl-Terminated Dimethyl Siloxane Copolymer; Reactive Methylhydrogen Dimethylsiloxane-Vinylsiloxane Copolymer; Si-H/Si-Vinyl Functional Siloxane; Crosslinking Silicone Fluid; Hydrosilylation Intermediate; Poly(dimethylsiloxane-co-methylhydrogensiloxane-co-methylvinylsiloxane); Vinyl and Hydride Functional Polydimethylsiloxane
EINECS	Contact for details

Quality Control

Our reactive silicone intermediates are manufactured under strict process controls to ensure batch-to-batch consistency and reliability. Each lot undergoes rigorous quality testing, including analysis of functional group content (Si-H and Si-Vinyl), viscosity, and purity, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing all relevant specifications are available upon request to support your quality assurance protocols.

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 moisture-sensitive (hygroscopic) and should be kept under a dry inert atmosphere (e.g., nitrogen) to prevent premature reaction or viscosity changes. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Viscosity (25°C)	Specification available upon request
Specific Gravity (25°C)	Specification available upon request
Si-H Content	Specification available upon request
Si-Vinyl Content	Specification available upon request
Volatile Content	< 1.0%
Identification (IR)	Conforms

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