Description

Siloxanes And Silicones, Di-Me, Me Ph, Polymers With Me Ph Silsesquioxanes is a specialized organosilicon copolymer that combines the properties of polydimethylsiloxane (PDMS) with phenyl-substituted silsesquioxane (POSS) structures. This engineered material offers a unique balance of thermal stability, optical clarity, and enhanced mechanical properties compared to standard silicones. It is essential for formulators and manufacturers in high-performance sectors seeking to improve the durability and functionality of their end products. Key industries that utilize this advanced polymer include advanced coatings, specialty elastomers, and high-temperature resistant composites.

Application

• High-Temperature Resistant Coatings: Used as a modifying resin or additive to enhance the thermal stability, weatherability, and gloss retention of protective coatings for automotive, aerospace, and industrial equipment.
• Specialty Silicone Elastomers: Acts as a reinforcing agent or property modifier in silicone rubbers, improving tensile strength, tear resistance, and thermal performance for gaskets, seals, and molded parts.
• Optical and Electronic Encapsulants: Employed in potting and encapsulation compounds for LEDs and electronic components due to its good optical clarity, thermal stability, and dielectric properties.
• Release Coatings and Pressure-Sensitive Adhesives (PSAs): Serves as a key component in formulations requiring controlled release properties or specific adhesive characteristics.
• Composite Materials: Incorporated as a compatibilizer or performance additive in polymer composites to enhance interfacial adhesion and overall material properties.
• Personal Care and Cosmetic Ingredients: Used in premium formulations for hair care and skincare products to provide conditioning, shine, and a silky feel with improved heat protection.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, Me Ph, Polymers With Me Ph Silsesquioxanes
CAS No.	68037-66-1
Molecular Formula	Not a single molecule; a polymeric mixture. Contact for details.
Molecular Weight	Varies by grade and polymerization degree.
Synonyms	Phenylmethylsiloxane-dimethylsiloxane copolymer; Polydimethylsiloxane, polymer with polyphenylsilsesquioxane; Methyl Phenyl Silicone Resin; Phenyl Methyl Siloxane Copolymer; PDMS-POSS copolymer; Silicone resin containing phenyl and methyl groups; Phenylmethyl polysiloxane
EINECS	Contact for details.

Quality Control

Our production of Siloxanes And Silicones, Di-Me, Me Ph, Polymers With Me Ph Silsesquioxanes adheres to stringent quality management protocols. Each batch undergoes rigorous testing to ensure consistency in key parameters such as viscosity, phenyl content, and thermal stability. Certificates of Analysis (COA) documenting these specifications are available upon request. We are committed to meeting the quality standards required 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 (typically 15-25°C). Keep away from strong oxidizing agents. For long-term storage, consider under an inert atmosphere to prevent viscosity changes.

Specification

Item	Specification
Appearance	Clear viscous liquid to translucent resin
Viscosity (25°C)	Specified by grade (e.g., 500 - 50,000 cSt)
Phenyl Content	Specified by grade (e.g., 5 - 40 mol%)
Refractive Index (n20D)	1.40 - 1.55
Specific Gravity (25°C)	0.98 - 1.10
Volatile Content	< 2.0%
Thermal Stability	Assessed by TGA (weight loss onset temperature)

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