Description

Bis(3-Ethyl-5-Methyl-4-Maleimidophenyl)Methane is a high-performance bismaleimide monomer, a key building block for advanced thermosetting polymers. This compound is valued for its ability to impart exceptional thermal stability, chemical resistance, and mechanical strength to cured resin systems. It is primarily needed by manufacturers in the aerospace, electronics, and high-performance composite industries seeking to produce materials for demanding applications.

Application

• As a cross-linking agent and co-monomer in bismaleimide (BMI) resins for aerospace composites.
• Production of high-temperature adhesives and structural bonding films.
• Formulation of encapsulation and molding compounds for microelectronics.
• Manufacture of printed circuit board (PCB) laminates requiring high thermal reliability.
• Development of friction materials and advanced industrial coatings.
• Research and development of novel thermoset polymers with tailored properties.

Basic Information

Product Name	Bis(3-Ethyl-5-Methyl-4-Maleimidophenyl)Methane
CAS No.	105391-33-1
Molecular Formula	C31H30N2O4
Molecular Weight	494.58 g/mol
Synonyms	1,1'-(Methylenedi-4,1-phenylene)bis[1H-pyrrole-2,5-dione, 3-ethyl-4-methyl-]; 4,4'-Bismaleimidodiphenylmethane derivative; BMI monomer; Bismaleimide monomer; Bis(3-ethyl-5-methyl-4-maleimidophenyl)methane; 3,3'-Ethyl-5,5'-dimethyl-4,4'-diphenylmethane bismaleimide
EINECS	Contact for details

Quality Control

Our Bis(3-Ethyl-5-Methyl-4-Maleimidophenyl)Methane is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency and meets high-purity standards suitable for advanced polymer synthesis. Certificates of Analysis (COA) documenting identity, purity, and key physical parameters are available upon request.

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 heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%

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