Description

Siloxanes And Silicones, Methyl Vinyl, Methyl Hydrogen Polymers With Phenylsilsesquioxanes is a specialized, high-performance silicone copolymer engineered for demanding applications requiring enhanced thermal stability, chemical resistance, and mechanical properties. This compound matters because it combines the flexibility and processability of methyl vinyl and methyl hydrogen siloxanes with the superior heat and oxidation resistance imparted by phenylsilsesquioxane structures. It is primarily needed by manufacturers in the advanced electronics, high-temperature elastomer, and specialty coatings industries seeking to improve product durability and performance under extreme conditions.

Application

• High-Temperature Silicone Elastomers & Sealants: As a key component in formulations for gaskets, O-rings, and seals used in automotive, aerospace, and industrial equipment.
• Encapsulants & Potting Compounds for Electronics: Provides protective, stress-relieving layers for sensitive electronic components, offering excellent dielectric properties and thermal stability.
• Release Coatings & Molding Agents: Used in industrial molding processes, particularly for composites and plastics, where high-temperature release and non-stick properties are critical.
• Specialty Additives for Plastics & Resins: Acts as a flow aid, processing modifier, or property enhancer in engineering plastics and high-performance resin systems.
• Adhesive & Coating Formulations: Imparts flexibility, weather resistance, and thermal protection to advanced adhesives and protective coatings.
• Fiber Optic Coatings: Used in primary and secondary coatings to protect optical fibers due to its low moisture absorption and stable refractive index.

Basic Information

Product Name	Siloxanes And Silicones, Methyl Vinyl, Methyl Hydrogen Polymers With Phenylsilsesquioxanes
CAS No.	104780-74-7
Molecular Formula	Contact for details
Molecular Weight	Varies by grade and polymerization degree
Synonyms	Methyl vinyl methyl hydrogen polysiloxane-phenyl silsesquioxane copolymer; Vinylmethylsiloxane-methylhydrogensiloxane-phenylsilsesquioxane copolymer; Phenyl T-resin modified methyl vinyl methyl hydrogen silicone fluid; Silicone copolymer with phenylsilsesquioxane; Methyl vinyl/methyl hydrogen silicone-phenyl T resin copolymer; High phenyl content silicone intermediate; Reactive silicone polymer with phenyl groups
EINECS	Contact for details

Quality Control

Our Siloxanes And Silicones, Methyl Vinyl, Methyl Hydrogen Polymers With Phenylsilsesquioxanes undergoes rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. Production adheres to strict quality management systems. Key parameters such as viscosity, vinyl content, hydrogen content, and phenyl group concentration are meticulously controlled. Certificates of Analysis (COA) detailing specific test results 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, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive (hygroscopic); ensure containers are sealed after use to prevent absorption of atmospheric moisture, which can affect reactivity and properties.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Viscosity (25°C)	500 - 10,000 cSt (Grade dependent)
Vinyl Content (mmol/g)	0.2 - 1.5
Hydrogen Content (mmol/g)	0.5 - 3.0
Phenyl Content	5 - 30 wt%
Volatile Matter	≤ 2.0%
Refractive Index (n25D)	1.410 - 1.480
Specific Gravity (25°C)	0.98 - 1.10

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