Description

Vinylphenylmethyl Terminated (30-40% Vinylphenylsiloxane) - Phenylmethylsiloxane Copolymer, 80-150 Cs is a specialized silicone copolymer engineered with reactive vinylphenyl and phenylmethyl siloxane groups. This unique molecular architecture provides exceptional thermal stability, low-temperature flexibility, and enhanced compatibility with organic and inorganic matrices. It is a critical performance additive for formulators in the electronics, aerospace, and advanced materials sectors seeking to improve the durability and functionality of high-performance elastomers, coatings, and encapsulants.

Application

• High-Temperature Silicone Elastomers: Acts as a reactive modifier to enhance heat resistance and mechanical properties in molded parts and gaskets.
• Electronic Encapsulants & Potting Compounds: Provides excellent dielectric properties and thermal shock resistance for protecting sensitive electronic components.
• Specialty Release Coatings & Liners: Used in formulations for high-performance, non-stick surfaces in industrial and composite manufacturing.
• Adhesives & Sealants: Imparts improved weatherability, flexibility, and adhesion to diverse substrates in construction and automotive applications.
• Aerospace Composites & Coatings: Serves as a compatibilizer and property enhancer in matrices requiring extreme environmental stability.
• Optical & LED Packaging Materials: Utilized for its clarity, stability, and ability to protect against yellowing under UV/heat stress.

Basic Information

Product Name	Vinylphenylmethyl Terminated (30-40% Vinylphenylsiloxane) - Phenylmethylsiloxane Copolymer, 80-150 Cs
CAS No.	68037-82-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Vinylphenylmethylsiloxane-Phenylmethylsiloxane Copolymer; Vinyl Phenyl Silicone Fluid; Phenyl Vinyl Siloxane Copolymer; Vinylphenyl Terminated Phenylmethyl Siloxane; Reactive Phenylmethylvinyl Siloxane; Silicone Copolymer with Vinylphenyl Groups; Poly(phenylmethyl-co-vinylphenylmethyl)siloxane; Phenyl/Vinylphenyl Silicone Oil
EINECS	Contact for details

Quality Control

Our Vinylphenylmethyl Terminated Phenylmethylsiloxane Copolymer is manufactured under a strict quality management system. Each batch is analyzed to ensure consistency in viscosity, vinyl content, and purity, meeting the high standards required for industrial and advanced material applications. Certificates of Analysis (COA) documenting key parameters 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, well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. For long-term storage, consider under an inert atmosphere to maintain optimal reactivity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Viscosity @ 25°C	80 - 150 cSt
Vinylphenylsiloxane Content	30 - 40 %
Specific Gravity @ 25°C	Contact for details
Refractive Index @ 25°C	Contact for details
Volatile Content	≤ 1.0 %

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