Description

Phenolic Epoxy Resin CAS NO 61788-97-4 is a high-performance thermosetting polymer synthesized from phenolic novolac and epichlorohydrin. This advanced material is engineered to deliver superior thermal stability, chemical resistance, and excellent adhesion properties, making it a critical component in demanding industrial applications. It is essential for manufacturers in the electronics, aerospace, and protective coatings industries who require reliable, high-temperature performance from their composite materials and adhesives.

Application

• Advanced Composite Materials: As a matrix resin for high-performance carbon fiber and fiberglass composites in aerospace and automotive structural components.
• Electronic Encapsulation & Molding Compounds: For semiconductor encapsulation, printed circuit board (PCB) laminates, and electrical insulation due to its excellent dielectric properties and heat resistance.
• High-Temperature Adhesives & Sealants: Formulating adhesives for metal-to-metal bonding and sealants for engines and industrial equipment exposed to harsh environments.
• Protective & Corrosion-Resistant Coatings: Used in industrial maintenance coatings, tank linings, and marine coatings where resistance to chemicals, solvents, and moisture is paramount.
• Friction Materials: As a binder in brake pads and clutch facings, providing thermal stability and consistent performance.
• Foundry & Molding Sands: Acting as a binder in shell molding and core-making processes for metal casting.

Basic Information

Product Name	Phenolic Epoxy Resin
CAS No.	61788-97-4
Molecular Formula	(C21H24O4)n
Molecular Weight	Varies (Polymer)
Synonyms	Epoxy Phenolic Resin; Phenol-Formaldehyde Epoxy Resin; Novolac Epoxy Resin; Phenolic Novolac Epoxy; EPON Resin (certain grades); Epoxy Cresol Novolac (ECN) Resin; Poly[(phenyl glycidyl ether)-co-formaldehyde]; Aradur (certain hardener-compatible grades)
EINECS	Contact for details

Quality Control

Our Phenolic Epoxy Resin is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including epoxy equivalent weight (EEW), viscosity, softening point, and gel time determination, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing all specifications are provided and traceable to the production lot.

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 product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Yellow to brown solid flakes or chunks
Epoxy Equivalent Weight (EEW)	170 - 230 g/eq
Softening Point (Ring & Ball)	60 - 90 °C
Viscosity (at 150°C)	500 - 5000 mPa·s
Hydrolyzable Chloride	< 1000 ppm
Volatile Content	< 1.0 %
Gel Time (with specified hardener)	Contact for details

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