| CAS No.: | 101-77-9 |
|---|---|
| Formula: | C1h6n2 |
| EINECS: | 202-974-4 |
| Type: | Chemical |
| Appearance: | Crystal |
| Quality: | Industrial |
| Samples: |
|---|
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Audited Supplier MDA-75 contains a mixture of 4,4 '-diaminodiphenylmethane( 65% to 75%) and some polyamino-polyphenylmethane . It is an important chemical intermediate, which is mainly used as chain extender of polyurethane elastomer, curing agent of epoxy resin, floor paint, battery glue, electronic filling and sealing glue, heavy anticorrosion coating, especially suitable for pouring and sealing of large parts with high cross-linking density and excellent performance.
The products synthesized by MDA-75 have excellent mechanical properties, corrosion resistance, insulation performance, high temperature resistance, radiation resistance, and wear resistance. |
| ITEMS | UNIT | SPECIFICATIONS | TEST METHOD(S) |
| Appearance | - | White or yellowish crystal granules | Visual |
| Melting point | ºC | ≥50 | Automatic melting pointapparatus |
| 4.4-MDA |
%(A/A)
|
65-72 | LC |
| ISOMER |
%(A/A)
|
20-30% | LC |
1. When MDA75 is stored, the warehouse shall be dry, ventilated and protected from light. It is strictly prohibited to be heated to prevent oxidation. During transportation, leakage, sunlight and rain are strictly prohibited. 2. Under the specified storage conditions, the shelf life is one year If it exceeds the shelf life, it can still be used after the test meets the technical index. |
Heze Yonghui composite material co.,Ltd, founded in 2008 and located in Dongming County, Heze City, the capital of peony in China, covers an area of more than 30000 square meters. It is specialized in the R&D, production and sales of special epoxy curing agent raw materials. The main products include 4,4 'diaminodiphenylmethane (MDA series products), DDM series products, Z-113 epoxy resin curing agent, MTPHA, MHHPA and other products. Our products are widely used in industries such as insulating paints, dye industry, bismaleic resin, carbon fiber composites, adhesives, heavy anti-corrosion of oil pipelines, battery glues, epoxy coatings, potting of electronic components and so on.
At present, we have more than 100 employees, including 2 postdoctors, 2 professor level senior engineers and a more than 10 professional R & D team. Yonghui attaches importance and respects talents and vigorously implements the strategy of revitalizing the enterprise through science and technology. We also signed long-term cooperation contracts with universities like Fudan University, Zhejiang University and other institutions for higher technical cooperation. We have already built a modern laboratory and professional technical R&D team. Under the team's hard working, we have completed a number of independent intellectual property rights and acquired advanced R&D experience. Today Yonghui has developed into a high-tech enterprise with advanced R&D strength.
Yonghui has always followed the principle of "Excellent Quality and Considerate Service", and has been committed to strict control of product quality for many years. We have passed ISO 9001:2008, ISO 19001:2016 quality system certification and EU REACH certification. We adhere to quality standardization and safety standardized production, and provide the most professional services guided by the actual needs of customers.
For decades, our products have not only been welcomed by many domestic customers, but also have independent import and export rights. Our products are exported to more than 20 countries and regions from North America, Western Europe, the Middle East and Southeast Asia. We sincerely welcome new and old customers at home and abroad to negotiate and cooperate.
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