Description

Epoxynovolacresins (Phenolic) are advanced, high-performance thermosetting polymers formed by the reaction of phenolic novolac resins with epichlorohydrin. This chemical structure provides exceptional thermal stability, chemical resistance, and superior adhesion properties, making them critical for demanding industrial applications. They are essential for manufacturers in the electronics, aerospace, and high-temperature coating industries who require reliable materials for encapsulation, composite matrices, and protective linings.

Application

• Advanced Composite Materials: Used as a matrix resin for carbon fiber and fiberglass composites in aerospace and automotive components.
• Electronic Encapsulation & Molding Compounds: Provides superior protection for semiconductors, integrated circuits, and electronic components against heat, moisture, and chemicals.
• High-Temperature Adhesives & Laminates: Serves as a binder in friction materials (brake pads, clutch facings) and industrial laminates requiring thermal endurance.
• Corrosion-Resistant Coatings & Linings: Formulated into protective coatings and tank linings for chemical processing equipment.
• Electrical Insulation Varnishes: Used in the production of insulating varnishes for motors, transformers, and generators.
• Foundry & Tooling Resins: Employed in rapid tooling and foundry sand binders for metal casting.

Basic Information

Product Name	Epoxynovolacresins (Phenolic)
CAS No.	92183-42-1
Molecular Formula	(C21H24O4)n / Complex Polymer
Molecular Weight	Varies by degree of polymerization
Synonyms	Epoxy Phenolic Novolac; Phenolic Novolac Epoxy Resin; Epoxidized Phenolic Novolac Resin; Novolac Epoxy Resin; EPON Resin (certain grades); Epoxy Cresol Novolac (ECN); Tactix 556 (trade name); DEN 431 (trade name); Poly[(phenyl glycidyl ether)-co-formaldehyde]
EINECS	Contact for details

Quality Control

Our Epoxynovolacresins (Phenolic) are manufactured under a stringent quality management system. Each batch is tested against rigorous internal specifications to ensure consistent performance in epoxy equivalent weight (EEW), viscosity, and thermal properties. Certificates of Analysis (COA) detailing key parameters are provided with every shipment to guarantee traceability and compliance with your formulation 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). Keep away from heat sources and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellow to brown solid or viscous liquid
Epoxy Equivalent Weight (EEW)	170 - 230 g/eq
Viscosity (at 25°C)	5,000 - 50,000 mPa·s (for liquid grades)
Softening Point (for solid grades)	50 - 90 °C
Hydrolyzable Chloride	< 1000 ppm
Color (Gardner)	< 10
Identification (IR)	Conforms

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