Description

3,3'-Bismaleimidodiphenyl ether (33ODA/BMI) is a high-performance bismaleimide monomer, a critical building block for advanced thermosetting polymers. This compound matters for its exceptional thermal stability, mechanical strength, and chemical resistance when polymerized, enabling materials to perform in demanding environments. It is primarily needed by manufacturers in the aerospace, electronics, and advanced composite industries for producing high-temperature adhesives, matrix resins for carbon fiber composites, and encapsulants for microelectronics.

Application

• As a cross-linking agent for high-temperature bismaleimide (BMI) and polyimide resins.
• Matrix resin precursor for carbon fiber and glass fiber reinforced composites in aerospace and automotive sectors.
• Formulation of high-performance adhesives and sealants for elevated temperature applications.
• Production of encapsulation materials and printed circuit board (PCB) laminates in the electronics industry.
• Manufacture of heat-resistant coatings and insulating varnishes.
• Key intermediate in the synthesis of specialized polyimide films and fibers.
• Used in research and development of next-generation thermoset polymers.

Basic Information

Product Name	3,3'-Bismaleimidodiphenyl ether (33ODA/BMI)
CAS No.	57846-45-4
Molecular Formula	C22H14N2O5
Molecular Weight	386.36 g/mol
Synonyms	1,1'-(Oxydi-1,3-phenylenebismaleimide; 3,3'-Bismaleimidodiphenyl Ether; BMI; 33ODA; 4,4'-Bismaleimidodiphenyl Ether Isomer; Bis(3-maleimidophenyl) Ether; 1,1'-(Oxydi-3,1-phenylene)bismaleimide
EINECS	Contact for details

Quality Control

Our 3,3'-Bismaleimidodiphenyl ether is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance, meeting the high standards required for advanced material synthesis. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles 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 room temperature (15-25°C). Keep away from heat sources and incompatible materials. This product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	115 - 125 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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