Description

4,4'-Methylenebis(2,6-Dimethylphenylcyanate) is a high-purity aromatic cyanate ester monomer, a critical building block for advanced thermoset polymers. This compound is valued for its role in producing polycyanurates, which offer exceptional thermal stability, low dielectric loss, and superior mechanical properties in demanding environments. It is primarily utilized by manufacturers in the aerospace, electronics, and high-performance composites industries seeking to enhance the thermal and electrical performance of their materials.

Application

• High-Temperature Composite Matrices: As a key monomer for formulating cyanate ester resins used in aerospace structural components and radomes.
• Electronic Encapsulation & Circuit Boards: For manufacturing advanced printed circuit boards (PCBs) and semiconductor encapsulation materials requiring low dielectric constant and dissipation factor.
• Adhesives and Bonding Agents: In the formulation of high-performance adhesives for applications demanding thermal resistance and durability.
• Pre-preg and Prepolymer Synthesis: Serving as a precursor for B-stage resins used in pre-impregnated composite fabrics (prepregs).
• Radiation-Resistant Materials: In the development of specialty polymers for applications in aerospace and nuclear environments where radiation stability is crucial.
• Research & Development: As a fine chemical intermediate for synthesizing novel polymers and studying structure-property relationships in material science.

Basic Information

Product Name	4,4'-Methylenebis(2,6-Dimethylphenylcyanate)
CAS No.	101657-77-6
Molecular Formula	C21H20N2O2
Molecular Weight	332.40 g/mol
Synonyms	2,2'-Methylenebis(6-methylphenyl cyanate); Bis(4-cyanatophenyl)methane derivative; 4,4'-Methylenebis(2,6-dimethylbenzonitrile) oxide; Cyanate ester monomer; AroCy B-10 (related trade series); Dicyanate ester of 2,2'-methylenebis(6-methylphenol); 1,1'-(Methylenedi-4,1-phenylene)bis(2,6-dimethylphenyl cyanate)
EINECS	Contact for details

Quality Control

Our production of 4,4'-Methylenebis(2,6-Dimethylphenylcyanate) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC, FT-IR, and NMR. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is moisture-sensitive; keep the container tightly sealed under an inert atmosphere such as nitrogen to prevent hydrolysis and maintain optimal purity and reactivity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	85 - 95 °C
Moisture (KF)	≤ 0.5%
Residual Phenol (GC)	≤ 0.1%

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