Description

4,4''-Methylenebis-(3,5-Dimethylphenyl)-Dicyanate Homopolymer is a high-performance thermosetting resin belonging to the cyanate ester family, known for its exceptional thermal stability and low dielectric properties. This advanced polymer is critical for applications demanding superior electrical insulation, high-temperature resistance, and low moisture absorption. It is primarily utilized by manufacturers in the aerospace, electronics, and advanced composite materials industries for producing high-reliability components.

Application

• High-Performance Composites: As a matrix resin for carbon fiber and glass fiber reinforcements in aerospace structural components and radomes.
• Electronic Encapsulation & Circuit Boards: Used in the production of multilayer printed circuit boards (PCBs), chip packaging, and encapsulants due to its excellent dielectric properties.
• Adhesives & Potting Compounds: Formulated into high-temperature adhesives and potting compounds for electronic and structural bonding in harsh environments.
• Radome & Antenna Materials: Ideal for fabricating radar-transparent structures that require minimal signal loss and high durability.
• Pre-pregs & Molding Compounds: Serves as a key resin in pre-impregnated fabrics and molding compounds for compression and autoclave molding processes.

Basic Information

Product Name	4,4''-Methylenebis-(3,5-Dimethylphenyl)-Dicyanate Homopolymer
CAS No.	101657-78-7
Molecular Formula	(C19H16N2O2)n
Molecular Weight	Contact for details
Synonyms	Polycyanate of 4,4'-Methylenebis(2,6-dimethylphenol); Cyanate Ester Homopolymer; Bismethylenedicyanate Homopolymer; BT Resin (related class); AroCy B-40 (related trade series); 1,1'-Methylenebis(3,5-dimethyl-4-cyanato-benzene) polymer; 4,4'-Methylenebis(2,6-dimethylphenyl cyanate) polymer
EINECS	Contact for details

Quality Control

Our 4,4''-Methylenebis-(3,5-Dimethylphenyl)-Dicyanate Homopolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as cyanate equivalent weight, viscosity, and thermal cure properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment to guarantee it meets your specific application 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). This material is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to amber solid / powder
Cyanate Equivalent Weight (CEW)	Contact for details
Melting Point / Glass Transition (Tg)	Contact for details
Viscosity (at specified temperature)	Contact for details
Purity (by HPLC)	> 98%
Volatile Content	< 1.0%
Identification (IR)	Conforms

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