Description

Methylhydrosiloxane, Dimethylsiloxane Copolymer, Trimethylsiloxane Terminated is a reactive silicone fluid characterized by its Si-H functional groups, offering a unique combination of reactivity and silicone-based properties. This compound is a critical intermediate for cross-linking and modifying silicone polymers, enabling the creation of materials with tailored mechanical, thermal, and surface characteristics. It is essential for manufacturers in the silicone elastomer, release coating, adhesive, and specialty chemical industries seeking to enhance product performance and durability.

Application

• Cross-linking Agent for Silicone Elastomers: Acts as a key hydrosilylation component in the production of high-performance HTV (High-Temperature Vulcanizing) and RTV (Room-Temperature Vulcanizing) silicone rubbers.
• Intermediate for Silicone Resins & Coatings: Used in formulating silicone-based release coatings, protective paints, and high-temperature resistant finishes.
• Adhesive & Sealant Formulations: Serves as a reactive modifier to improve adhesion, flexibility, and curing properties in silicone adhesives and sealants.
• Surface Modification & Coupling Agent: Functionalizes inorganic fillers (like silica) and other substrates to improve compatibility within polymer matrices.
• Synthesis of Specialty Silicones: A fundamental building block for creating custom silicone copolymers, graft polymers, and branched structures.
• Textile & Fiber Treatment: Imparts water repellency, softness, and durable press properties to fabrics and non-wovens.

Basic Information

Item	Details
Product Name	Methylhydrosiloxane, Dimethylsiloxane Copolymer, Trimethylsiloxane Terminated
CAS No.	68037-59-2
Molecular Formula	(C2H6OSi)m(C3H10OSi)n (Copolymer structure)
Molecular Weight	Variable (Depends on m:n ratio and chain length)
Synonyms	Hydride-terminated Polydimethylsiloxane; Poly(methylhydro-dimethyl)siloxane; Methyl Hydrogen Siloxane-Dimethyl Siloxane Copolymer; Si-H Functional Silicone Fluid; Polymethylhydrosiloxane Copolymer; Hydrosilylation Crosslinker; Reactive Silicone Hydride Fluid; PMHS-DMS Copolymer
EINECS	Contact for details

Quality Control

Our Methylhydrosiloxane, Dimethylsiloxane Copolymer is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as hydride content, viscosity, and purity. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Isolate from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Complies
Hydride Content (Si-H)	Contact for details
Viscosity @ 25°C	Contact for details
Specific Gravity @ 25°C	Contact for details
Refractive Index @ 25°C	Contact for details
Water Content	< 0.1%

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