Description

Formaldehyde, Polymer With (Chloromethyl)Oxirane, 4,4-(1-Methylethylidene)Bisphenol And 2-Methylphenol is a specialized phenolic resin polymer, commonly known as a modified epoxy novolac resin, with the CAS registry number 67626-89-5. This engineered polymer is valued for its enhanced thermal stability, chemical resistance, and superior mechanical properties compared to standard epoxy resins. It is a critical raw material for manufacturers in the electronics, aerospace, and high-performance coatings industries seeking advanced composite materials and adhesives.

Application

• Advanced Composite Matrices: Used as a high-performance resin matrix for carbon fiber and fiberglass composites in aerospace and automotive structural components.
• Electronic Encapsulation & Molding Compounds: Serves as a key ingredient in semiconductor encapsulation and transfer molding compounds (EMCs/TMCs) for integrated circuits, offering excellent moisture resistance and low thermal expansion.
• High-Temperature Adhesives & Coatings: Formulated into industrial adhesives and protective coatings that must withstand harsh chemical environments and elevated temperatures.
• Laminates for Printed Circuit Boards (PCBs): Employed in the production of multilayer PCBs and copper-clad laminates, providing reliable insulation and flame retardancy.
• Tooling & Molding Applications: Used in the creation of durable molds, patterns, and tooling for composite part production.
• Friction Materials: A component in formulations for brake pads and clutch facings, contributing to heat resistance and durability.

Basic Information

Product Name	Formaldehyde, Polymer With (Chloromethyl)Oxirane, 4,4-(1-Methylethylidene)Bisphenol And 2-Methylphenol
CAS No.	67626-89-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Epoxy Novolac Resin; Phenol, 4,4'-(1-methylethylidene)bis-, polymer with (chloromethyl)oxirane and formaldehyde; Epoxy phenol novolac resin; Modified epoxy resin; EPN resin; Phenolic epoxy resin; Bisphenol A epoxy novolac; Novolac epoxy resin; (Chloromethyl)oxirane, polymer with formaldehyde, 4,4'-(1-methylethylidene)bisphenol and 2-methylphenol
EINECS	Contact for details

Quality Control

Our modified epoxy novolac resins are manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters such as epoxy equivalent weight (EEW), viscosity, softening point, and chlorine content to meet precise customer and industry specifications. Certificates of Analysis (COA) documenting these results are provided with every shipment.

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); ensure containers are sealed immediately after use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Yellow to brown solid flakes or lumps
Epoxy Equivalent Weight (EEW)	Contact for details
Softening Point	Contact for details
Viscosity (at 150°C)	Contact for details
Chlorine Content	Contact for details
Hydrolyzable Chlorine	Contact for details
Color (Gardner)	Contact for details

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