Description

Polydiphenylsiloxane, Silanol Term is a specialized organosilicon polymer featuring reactive silanol (Si-OH) end groups. This chemical structure is critical for its role as a versatile intermediate in the synthesis of high-performance silicone resins and elastomers. It is essential for manufacturers in the electronics, aerospace, and specialty coatings industries seeking to enhance thermal stability, dielectric properties, and mechanical strength in their final products.

Application

• Silicone Resin Synthesis: A key building block for creating phenyl-modified silicone resins with superior heat resistance and optical clarity.
• High-Temperature Elastomers: Used as a chain extender or cross-linking agent in silicone rubbers designed for extreme environments.
• Electronic Encapsulants & Potting: Imparts excellent dielectric properties and thermal stability to protective materials for sensitive electronic components.
• Specialty Release Coatings & Inks: Contributes to the formulation of high-performance, thermally stable coatings and inks.
• Adhesives & Sealants: Enhances the flexibility, adhesion, and durability of high-end silicone-based adhesives and sealants.
• Aerospace Composites: Utilized in the production of composite materials requiring lightweight, heat-resistant properties.
• Optical Grade Silicones: Serves as a precursor for silicones used in LED encapsulation and optical lenses due to its clarity and stability.
• Laboratory Research & Development: Employed as a specialized monomer for developing novel silicone-based polymers and copolymers.

Basic Information

Product Name	Polydiphenylsiloxane, Silanol Term
CAS No.	63148-59-4
Molecular Formula	Contact for details
Molecular Weight	Varies by chain length
Synonyms	Poly(diphenylsiloxane), Silanol-terminated; Diphenylsiloxane Homopolymer, Silanol Terminated; α,ω-Dihydroxypolydiphenylsiloxane; Polydiphenylsiloxanediol; PDPS, Silanol Terminated; Silanol-Functional Polydiphenylsiloxane; Diphenyl Silicone Fluid, Hydroxy Terminated
EINECS	Contact for details

Quality Control

Our Polydiphenylsiloxane, Silanol Term is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency in hydroxyl value, viscosity, molecular weight distribution, and purity. Certificates of Analysis (COA) documenting these parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Identification (IR)	Conforms
Hydroxyl Value (OH#)	Contact for details
Viscosity @ 25°C	Contact for details
Phenyl Content	Contact for details
Water Content	< 0.1%
Molecular Weight (Mn)	Contact for details

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