Description

Siloxanes And Silicones, Di-Me, Me Hydrogen, Polymers With Me Silsesquioxanes And Vinyl Group-Terminated Di-Me Siloxanes is a specialized, multi-functional silicone copolymer designed for high-performance applications. This product matters because it combines the excellent thermal stability and hydrophobicity of silicones with the enhanced cross-linking efficiency provided by its reactive methyl hydrogen and vinyl terminal groups. Industrial formulators and material scientists need this advanced polymer to create durable, flexible, and highly resistant coatings, adhesives, and elastomers for demanding environments.

Application

• High-Performance Release Coatings: Used as a key component in solventless and solvent-based formulations for pressure-sensitive adhesive (PSA) liners and industrial mold release agents.
• Silicone Rubber & Elastomers: Acts as a reactive intermediate or additive in heat-cured (HCR) and liquid silicone rubber (LSR) to modify physical properties and enhance cross-link density.
• Adhesives & Sealants: Serves as a backbone polymer in formulations requiring excellent weatherability, UV resistance, and flexibility over a wide temperature range.
• Protective & Dielectric Coatings: Formulated into coatings for electronic components, automotive parts, and aerospace applications where moisture resistance and electrical insulation are critical.
• Fabric & Fiber Treatment: Imparts durable water repellency (DWR) and softness to technical textiles and nonwovens.
• Personal Care & Cosmetic Ingredients: Utilized in specialty formulations for hair conditioning, skin care, and makeup where a silky, non-greasy feel is desired.
• Additive for Plastics & Composites: Incorporated as a processing aid and surface modifier to improve flow, reduce friction, and enhance dispersion of fillers.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, Me Hydrogen, Polymers With Me Silsesquioxanes And Vinyl Group-Terminated Di-Me Siloxanes
CAS No.	153668-87-2
Molecular Formula	Typically a complex mixture; Contact for details
Molecular Weight	Varies by grade and viscosity
Synonyms	Methylhydrogen Siloxane-Dimethylsiloxane Copolymer, Vinyl Terminated; Vinyl-Terminated Methylhydrogen-Dimethylsiloxane Copolymer; Poly(dimethylsiloxane-co-methylhydrogensiloxane), vinyl terminated; MQ Resin Modified Silicone Fluid; Reactive Silicone Copolymer; Vinyl-Functional Methylhydrogen Silicone Fluid; Silicone Prepolymer with MQ Resin; Crosslinkable Silicone Intermediate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Each batch is controlled against key parameters including viscosity, reactive group content (Si-H and Vi), and refractive index to guarantee consistency and performance. Certificates of Analysis (COA) are available upon request, detailing the specific properties of your shipment. We adhere to a cGMP compliant quality management system to ensure reliability for industrial and specialty chemical applications.

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 material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from heat, sparks, open flames, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Viscosity (25°C)	Specification available upon request
Specific Gravity (25°C)	0.98 - 1.02
Refractive Index (n20D)	1.400 - 1.410
Hydrogen Content (as Si-H)	Specification available upon request
Vinyl Content (as Vi)	Specification available upon request
Volatile Content	≤ 2.0%

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