Description

Polyphenylene CAS NO 25190-62-9 is a high-performance polymer characterized by a backbone of repeating benzene rings connected by single bonds, offering exceptional thermal stability and chemical resistance. This material is crucial for applications demanding durability under extreme conditions where conventional plastics fail. It is primarily sought by the aerospace, electronics, and specialty chemical industries for advanced composite materials, high-temperature coatings, and as a precursor for other engineered polymers.

Application

• High-Temperature Composite Matrices: Used as a resin binder in carbon fiber and fiberglass composites for aerospace and automotive components.
• Advanced Electronic Encapsulation: Serves as a protective coating or molding compound for semiconductors and sensors operating in harsh environments.
• Corrosion-Resistant Coatings: Formulated into paints and linings for chemical processing equipment, pipelines, and marine structures.
• Precursor for Specialty Polymers: Acts as a key intermediate in the synthesis of poly(p-phenylene) (PPP) and other rigid-rod polymers.
• Thermal Management Materials: Incorporated into thermally conductive but electrically insulating pads, greases, or composites.
• Flame-Retardant Additives: Used as a char-forming agent to enhance the fire resistance of plastics and textiles.

Basic Information

Product Name	Polyphenylene
CAS No.	25190-62-9
Molecular Formula	(C6H4)n
Molecular Weight	Varies (Polymer)
Synonyms	Poly(1,4-phenylene); Poly(p-phenylene) (PPP); Polyphenyl; Polybenzene; 1,4-Polyphenylene; Phenyl polymer; Poly(para-phenylene); Poly(phenylene) resin
EINECS	Contact for details

Quality Control

Our Polyphenylene is manufactured under a stringent quality management system. Each batch is tested to ensure consistency in molecular weight distribution, thermal properties, and purity. Certificates of Analysis (COA) documenting key 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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brown powder or flakes
Identification (IR)	Conforms to reference spectrum
Inherent Viscosity	0.3 - 1.2 dL/g (varies by grade)
Thermal Decomposition Onset (TGA)	> 450 °C
Ash Content	< 0.5 %
Solubility	Insoluble in common solvents

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