Description

Siloxanes And Silicones, Di-Me, Di-Ph, Polymers With Ph Silsesquioxanes, Methoxy-Terminated is a specialized organosilicon polymer featuring a hybrid structure of dimethylsiloxane, diphenylsiloxane, and phenyl silsesquioxane units, terminated with reactive methoxy groups. This unique architecture provides an exceptional balance of thermal stability, optical clarity, and enhanced compatibility with organic and inorganic matrices. It is a critical performance additive for formulators in advanced material sectors seeking to improve the durability and functionality of their products. Key industries that rely on this material include high-performance coatings, advanced electronics, and specialty elastomers.

Application

• High-Temperature Resistant Coatings: Used as a resin modifier or crosslinking agent in protective coatings for aerospace, automotive, and industrial equipment, enhancing thermal stability and weatherability.
• Optical Encapsulants & LED Packaging: Serves as a matrix material for encapsulating LEDs and optical components, offering excellent light transmission, low yellowing, and long-term reliability.
• Electronic Potting & Underfill Compounds: Provides stress relief, moisture protection, and electrical insulation for sensitive semiconductor devices and circuit boards.
• Specialty Silicone Elastomers & Adhesives: Acts as a key intermediate or additive to formulate elastomers and adhesives with improved refractive index, mechanical strength, and heat resistance.
• Release Coatings & Mold-Making: Employed in formulations for high-performance release liners and molds requiring non-stick properties and thermal endurance.
• Composite Material Modification: Enhances the interfacial adhesion and dispersibility of fillers in advanced polymer composites, improving overall mechanical properties.

Basic Information

Item	Details
Product Name	Siloxanes And Silicones, Di-Me, Di-Ph, Polymers With Ph Silsesquioxanes, Methoxy-Terminated
CAS No.	68440-65-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Methoxy-Terminated Methyl Phenyl Siloxane; Methoxy-Functional Phenyl Silsesquioxane-Siloxane Copolymer; Phenylmethylsiloxane-Diphenylsiloxane Copolymer, Methoxy Terminated; Methyl Phenyl Silicone Resin, Methoxy End-Capped; Siloxanes and Silicones, di-Me, di-Ph, polymers with Ph silsesquioxanes, methoxy-terminated; Methoxy Silane Terminated Phenyl Silicone; Aromatic Methoxysiloxane Polymer
EINECS	Contact for details

Quality Control

Our production of Siloxanes And Silicones, Di-Me, Di-Ph, Polymers With Ph Silsesquioxanes, Methoxy-Terminated adheres to a rigorous quality management system to ensure batch-to-batch consistency and performance reliability. Key parameters such as methoxy content, viscosity, refractive index, and volatile matter are strictly monitored. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment 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/59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Contact for details
Refractive Index (n20D)	Contact for details
Methoxy Content	Contact for details
Volatile Matter	≤ 2.0%
Specific Gravity (25°C)	Contact for details

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