Description

Polyimide CAS NO 58698-66-1 is a high-performance polymer belonging to the class of heterocyclic macromolecules known for exceptional thermal stability and mechanical strength. This material is critical for applications demanding reliability under extreme environmental stress, such as high temperatures and aggressive chemical exposure. It serves as an essential component for manufacturers in the aerospace, electronics, and automotive industries seeking durable insulating and structural materials.

Application

• Electrical Insulation: Used in high-temperature wire and cable coatings, flexible printed circuits (FPCs), and slot liners for electric motors.
• Aerospace Components: Employed in engine parts, thermal blankets, and structural composites due to its excellent strength-to-weight ratio and flame resistance.
• Semiconductor Fabrication: Serves as a dielectric layer in microelectronics and as a substrate for flexible displays and sensors.
• Industrial Seals & Gaskets: Manufactured into parts that require long-term performance in harsh chemical and thermal environments.
• Adhesives & Coatings: Formulated into high-temperature resistant adhesives and protective coatings for metal and composite surfaces.
• Automotive Systems: Applied in under-the-hood components, including ignition systems and thermal management parts.
• Filtration Membranes: Used in high-temperature gas separation and filtration processes.

Basic Information

Product Name	Polyimide
CAS No.	58698-66-1
Molecular Formula	(C22H10N2O5)n
Molecular Weight	~ 382.33 (monomer unit)
Synonyms	Polyimide resin; PI; Kapton (trade name variant); Vespel (trade name variant); Poly(4,4'-oxydiphenylene-pyromellitimide); Poly(pyromellitimide-1,4-diphenylene ether); 4,4'-Oxydiphthalic anhydride-4,4'-oxydianiline copolymer; Thermoplastic Polyimide
EINECS	Contact for details

Quality Control

Our Polyimide is produced under stringent quality management systems to ensure batch-to-batch consistency and performance. Quality is verified through a series of tests including intrinsic viscosity, thermal gravimetric analysis (TGA), and glass transition temperature (Tg) measurement. A Certificate of Analysis (COA) detailing specific lot results is provided with every shipment to guarantee compliance with your technical requirements.

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). This material is hygroscopic (moisture-sensitive); keep the original container sealed to prevent moisture absorption which can affect processing properties.

Specification

Item	Specification
Appearance	Yellow to amber granules or powder
Identification (IR)	Conforms to structure
Inherent Viscosity	0.5 - 1.2 dL/g (typical)
Glass Transition Temp (Tg)	> 250 °C
Decomposition Temperature (Td)	> 500 °C
Moisture Content	< 0.5 %
Ash Content	< 0.1 %

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