Description

Epoxynovolacresins(Cresolic) are a class of high-performance, multifunctional epoxy resins derived from cresol novolac. This product, identified by CAS No. 68609-31-4, is engineered to deliver superior thermal stability, chemical resistance, and excellent adhesion properties in demanding environments. It is an essential raw material for formulators and manufacturers requiring advanced thermoset polymer systems. Key industries that rely on this material include electronics, aerospace, and high-temperature composite manufacturing.

Application

• Advanced Electronic Encapsulation and Molding Compounds: Used for semiconductor packaging, chip-on-board (COB) encapsulation, and underfill materials due to its low ionic impurity and high glass transition temperature (Tg).
• High-Temperature Composite Matrices: Serves as a critical resin matrix for carbon fiber and fiberglass prepregs in aerospace and automotive components.
• High-Performance Adhesives and Structural Bonding: Formulated into adhesives for metal-to-metal and composite bonding that must withstand extreme thermal cycling and chemical exposure.
• Corrosion-Resistant Industrial Coatings and Linings: Used in tank linings, pipe coatings, and floorings for chemical processing plants.
• Friction Materials and Abrasives: Acts as a binder in brake pads, clutch facings, and grinding wheels where thermal stability is paramount.
• Electrical Laminates: A key component in the production of printed circuit board (PCB) substrates like FR-4 and other high-performance grades.

Basic Information

Product Name	Epoxynovolacresins(Cresolic)
CAS No.	68609-31-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Cresol Novolac Epoxy Resin; Epoxy Cresol Novolac Resin; ECN; Epoxy Novolac Resin (Cresol-based); Cresolic Epoxy Novolac; Novolac Epoxy Resin; Poly[(phenyl glycidyl ether)-co-formaldehyde]; Epoxy resin based on cresol-formaldehyde novolac
EINECS	Contact for details

Quality Control

Our Epoxynovolacresins(Cresolic) are manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as epoxy equivalent weight (EEW), viscosity, and softening point. Certificates of Analysis (COA) are provided with every shipment, detailing the specific results for that production lot. We adhere to relevant industry standards and can support compliance requirements for global markets.

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); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to brown solid / flakes
Epoxy Equivalent Weight (EEW)	200 - 230 g/eq
Softening Point (Ring & Ball)	60 - 85 °C
Viscosity (at 150°C)	Contact for details
Hydrolyzable Chloride	< 500 ppm
Total Chloride	< 1000 ppm
Sodium (Na)	< 5 ppm
Potassium (K)	< 5 ppm
Color (Gardner)	< 5

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