Description

Phenol Novolac Cyanate Ester CAS NO 30944-92-4 is a high-performance thermosetting resin derived from phenol-formaldehyde novolac, where the phenolic hydroxyl groups are converted to cyanate ester functional groups. This chemical is critically important for its exceptional thermal stability, low dielectric loss, and outstanding mechanical properties in cured states, making it a premium matrix material for advanced composites. It is primarily needed by manufacturers in the aerospace, defense, electronics, and high-performance automotive sectors for producing structural components, radomes, and circuit board substrates.

Application

• Aerospace Composite Matrices: Used as a high-temperature resin for carbon fiber and glass fiber prepregs in primary and secondary aircraft structures.
• Electronic Encapsulation & Circuit Boards: Serves as a low-dielectric, high-Tg resin for multilayer printed circuit boards (PCBs), chip encapsulation, and underfill materials.
• Radome & Microwave Components: Ideal for fabricating radar-transparent radomes and other electromagnetic window components due to its excellent electrical properties.
• Adhesives & Bonding Films: Formulated into high-performance structural adhesives and bonding films for extreme environment applications.
• Pre-polymer for Toughened Systems: Acts as a precursor or co-reactant with epoxies, bismaleimides, or other cyanate esters to create toughened, hybrid resin systems.
• Filament Winding & Pultrusion: Employed in the manufacture of high-strength, corrosion-resistant pipes, tubes, and structural profiles via automated processes.

Basic Information

Product Name	Phenol Novolac Cyanate Ester
CAS No.	30944-92-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polycyanate ester of phenol novolac; Novolac cyanate ester resin; Phenolic cyanate ester; Cyanated phenol novolac; Cyanate ester novolac; Phenol-formaldehyde novolac cyanate; High-functionality cyanate ester; Thermosetting polycyanurate based on novolac
EINECS	Contact for details

Quality Control

Our Phenol Novolac Cyanate Ester is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in functionality, viscosity, and cure characteristics, meeting the high standards required for advanced composite applications. A comprehensive Certificate of Analysis (COA) detailing key parameters such as cyanate equivalent weight, residual phenol content, and thermal properties is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). This material is moisture-sensitive (hygroscopic); keep the original container tightly sealed to prevent absorption of atmospheric moisture, which can affect reactivity and final properties.

Specification

Item	Specification
Appearance	Yellow to amber solid or viscous liquid
Cyanate Equivalent Weight (CEW)	Contact for details
Purity (Assay)	> 98.0%
Residual Phenol Content	< 1.0%
Viscosity (at 25°C, if liquid)	Contact for details
Melting Point / Softening Point	Contact for details
Identification (IR)	Conforms
Moisture Content	< 0.5%

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