Description

4,4'-Bismaleimidodiphenylmethane (DMT/BMI) is a high-performance bismaleimide monomer, a critical building block for advanced thermosetting polymers. This compound matters because it enables the synthesis of polyimide resins and composites that offer exceptional thermal stability, mechanical strength, and chemical resistance. Industries requiring durable, high-temperature materials, such as aerospace, electronics, and advanced composites manufacturing, rely on this monomer to produce next-generation adhesives, coatings, and structural components.

Application

• High-Temperature Polyimide Resins: Primary cross-linking agent for bismaleimide (BMI) resins used in aerospace and military composites.
• Advanced Composite Matrices: Key monomer for manufacturing carbon fiber and glass fiber reinforced composites with superior heat resistance.
• Electronic Encapsulation & Packaging: Used in underfills, molding compounds, and printed circuit board (PCB) substrates for its excellent dielectric properties and thermal endurance.
• High-Performance Adhesives: Formulation of structural adhesives for bonding metals and composites in demanding environments.
• Specialty Coatings: Development of protective coatings for industrial equipment requiring resistance to heat and corrosion.
• Research & Development: Serves as a precursor in academic and industrial R&D for novel polymer architectures and material science.

Basic Information

Item	Detail
Product Name	4,4'-Bismaleimidodiphenylmethane (DMT/BMI)
CAS No.	36394-79-3
Molecular Formula	C25H20N2O4
Molecular Weight	412.44 g/mol
Synonyms	4,4'-Bismaleimidodiphenylmethane; DMT-BMI; BMI (DMT type); 1,1'-(Methylenedi-4,1-phenylene)bismaleimide; Bismaleimide Monomer; N,N'-(4,4'-Methylenediphenyl)bismaleimide; 4,4'-Diphenylmethane bismaleimide; BMI Resin Monomer
EINECS	Contact for details

Quality Control

Our 4,4'-Bismaleimidodiphenylmethane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, melting point, and impurity profiles. Our quality management system is designed to meet the rigorous demands of advanced materials manufacturing.

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). Keep away from strong oxidizing agents and sources of heat.

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder
Identification (IR)	Conforms to structure
Melting Point	155 - 165 °C
Assay (HPLC)	≥ 98.0 %
Loss on Drying	≤ 0.5 %

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