Bismaleimide Series

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N,N-4,4-diphenylmethyene bismaleimide BMI resin
BMI powder
BMI powder


N,N'-(4,4' DIPHENYLMETHANE)BISMALEIMIDE manufactured by Yangchen Tech is widely used in aviation, aerospace, electric power, electronics, computers, communications, automobiles, railways, construction and other industrial fields as a more ideal resin matrix for manufacturing heat-resistant structural materials, Class H or Class F electrical insulation materials.

  • CAS No :

  • Name :

    N,N-4,4-diphenylmethyene bismaleimide
  • Abbreviation :

    BMI or BDM
  • Appearance :

    Yellow powder
  • Molecular Formula :

  • Molecular weight :

  • Lead Time :

    5-7 Days
  • Shipping port :




Abbreviation: BMI or BDM

Molecular formula: C21H14N2O4

Molecular weight: 358.37

Appearance: light yellow solid powder;

Melting point: 150~160°C;

Solubility: Hardly soluble in water and ethanol, easily soluble in acetone and dimethylformamide.

CAS NO: 13676-54-5

We provide you with free samples!Welcome Inquiry! 



Technical Indicators

Appearance Melting point Acid value


Specification Gel time 200℃ Toluene Solubility
Yellow powder 150-160℃




<300 S

Totally soluble or a small amount of insoluble matter, transparent solution


Structure formula of BMI resin




Application of N,N'-(4,4' DIPHENYLMETHANE)BISMALEIMIDE manufactured by Yangchen Tech


  • Motor insulation materials: high-temperature resistant impregnating varnish (solvent-based and solvent-free), wire enamel, laminates, weftless tapes, mica tapes, electronic copper-clad laminates, moulded plastics, epoxy-modified F ~ H-grade powder coatings, casting parts, etc;
  • Composite materials: matrix resin aerospace, aviation structural materials, carbon fibre high-temperature resistant structural components, printed circuit boards and other functional materials, etc.; 
  • Engineering plastics: such as polypropylene PP, nylon PA, ABS, APC, PVC, PBT, EPDM, PMMA and other materials, enhancement modifier (such as polypropylene glass fibre enhancement modification by adding <1 % of the BMI-01, you can make the mechanical strength and Martin heat-resistant doubled, the effect is obvious), but also can be used for crosslinking agent of TPV, a new type of rubber vulcanising agent, etc.;
  • Wear-resistant materials: diamond grinding wheels, heavy-duty grinding wheels, brake pads, high-temperature bearing adhesives, magnetic materials, and so on. 

Our warehouse




PE bag lined with PE film, net weight 25kg/bag.


About us

1.We are the first competent factory manufacturing N,N'-(4,4' DIPHENYLMETHANE)BISMALEIMIDE  powder in China, with an annual production capacity of 3000 tons.

2. With over 30 years of industry experience, our expertise shines through in our products.

3. We have served more than 100 customers from all over the world.

4.Our R&D team provides technical solutions and technical support to meet your specific needs.



Q1: Is Yangchen Tech a manufacturer or trading company?

A: We are the first BMI manufacturer in China, with an annual production capacity of 3000 tons.


Q2: Does Yangchen Tech provide free samples?

A: We are very glad to provide you with free samples for your testing .


Q3: How to pay for the order?

A: We accept payment by T/T, L/C.


Q4: Does Yangchen Tech provide technical support for customers?

A: Yes, we do. Each customer's application is unique in some ways. Our customized services of BMI are designed to better meet your needs. Based on our 30+ years of experience in the rubber additives industry, we can provide technical support services based on your specific needs.





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