Description

Siloxanes And Silicones, Diphenyl, Polymers With Methyl Phenyl Silsesquioxanes is a high-performance silicone copolymer engineered for demanding thermal and optical applications. This advanced material is valued for its exceptional thermal stability, high refractive index, and excellent dielectric properties, making it a critical component in high-tech manufacturing. It is essential for industries requiring materials that maintain performance under extreme conditions, such as advanced electronics, aerospace, and specialty coatings.

Application

• High-Temperature Resistant Coatings: Used as a binder or additive in protective coatings for aerospace components, automotive engine parts, and industrial equipment exposed to extreme heat.
• LED Encapsulation and Optoelectronics: Serves as a high-refractive-index, transparent encapsulant for LEDs, optical lenses, and waveguides due to its excellent light transmission and thermal stability.
• Electronic Packaging and Encapsulation: Provides reliable protection for sensitive semiconductors, integrated circuits, and power modules, offering superior dielectric strength and resistance to thermal cycling.
• Specialty Adhesives and Sealants: Formulated into high-performance adhesives and sealants for applications requiring long-term durability, flexibility, and resistance to weathering and chemicals.
• Thermal Interface Materials (TIMs): Acts as a base polymer in gels, greases, and pads designed to efficiently manage heat dissipation in electronic assemblies.
• Release Coatings: Employed in industrial molding and composite fabrication processes where high-temperature release and low surface energy are required.

Basic Information

Product Name	Siloxanes And Silicones, Diphenyl, Polymers With Methyl Phenyl Silsesquioxanes
CAS No.	68037-75-2
Molecular Formula	(C12H10OSi)x • (C7H8OSi)y (Polymeric)
Molecular Weight	Varies by polymer chain length and composition.
Synonyms	Diphenyl Siloxane-Methyl Phenyl Silsesquioxane Copolymer; Methyl Phenyl Silsesquioxane-Diphenyl Siloxane Polymer; Phenylmethylsilsesquioxane-Diphenylsiloxane Copolymer; Silicone Resin SR-240; Aryl-Modified Silicone Resin; High Refractive Index Silicone; Thermally Stable Silicone Copolymer; Polydiphenylsiloxane-co-methylphenylsilsesquioxane
EINECS	Contact for details

Quality Control

Our production of Diphenyl Siloxane-Methyl Phenyl Silsesquioxane Copolymer adheres to stringent quality management protocols. Each batch is characterized for critical parameters including refractive index, viscosity, thermal stability, and compositional consistency to ensure it meets precise application requirements. Certificates of Analysis (COA) detailing these specifications are available upon request, providing full traceability and quality assurance for your supply chain.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	Clear, viscous liquid to solid resin
Refractive Index (n20D)	1.50 - 1.58
Viscosity (25°C)	Specification available upon request
Phenyl Content	Specification available upon request
Thermal Decomposition Onset	> 400°C (TGA, in N2)
Volatile Content	< 2.0%
Identification (IR)	Conforms to structure

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