JAMMARK INTERNATIONAL TRADINGE(ZIBO) CO., LTD. is one of the most professional manufacturers and suppliers of pmda material intermediates in China. If you're going to buy high quality pmda material intermediates made in China, welcome to get more information from our factory. For price consultation, contact us.
With its outstanding thermal stability and chemical resistance, PMDA is a preferred raw material for producing polyimide resins, adhesives, coatings, and electronic materials.
How does JAMMARK INTERNATIONAL TRADINGE produce pyromellitic anhydride?
1. Raw material selection and oxidation
JAMMARK INTERNATIONAL TRADINGE typically uses mesitylene as a raw material to produce pyromellitic dianhydride via gas-phase oxidation (such as air catalytic oxidation). This process allows for continuous production, avoids the catalyst separation step in liquid-phase methods, and is suitable for industrial scale-up.
2. Purification and crystallization
The crude product needs to be purified through recrystallization and filtration to ensure a purity of ≥98%. During the process, environmental humidity must be controlled to prevent PMDA from hydrolyzing into pyromellitic acid.
3. Application-oriented process optimization
If used in polyimide films (such as flexible copper-clad laminates), it needs to be further polycondensed with diamine monomers to generate polyamic acid (PAA), and then the film is obtained through casting, imidization and other steps.
Advantages of producing PMDA material intermediates
The company(JAMMARK INTERNATIONAL TRADINGE) is equipped with gas phase oxidation and hydrolysis equipment to achieve large-scale production of PMDA. The products meet international quality standards and are exported to overseas markets.
Applications of PMDA material intermediates
- Polyimide resins and films
- Epoxy resin curing agent
- As a crosslinking agent for polyester resin, it enhances the material properties.
- Used in the synthesis of fine chemicals such as phthalocyanine blue dye and PVC plasticizers.
JAMMARK INTERNATIONAL TRADINGE(ZIBO) CO., LTD. is a professional chemical factory
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