Methyl nadic anhydride
CAS number:25134-21-8
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Molecular Formula:
C10H10O3
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Molecular Weight:
178.18 g/mol
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Brief Introduction:
Methylnadic anhydride (MNA) is a commonly used curing agent in high-performance epoxy resin systems, especially for demanding applications such as polyimide fiber reinforced composites. Studies have shown that MNA contains a norbornene bridge structure that can increase the local free volume, thereby reducing the dielectric constant and improving toughness. In multifunctional epoxy resin mixtures, the curing kinetics of MNA can be studied by dynamic and isothermal differential scanning calorimetry (DSC), and the results show that it has good compatibility with a variety of epoxy resins such as bisphenol A diglycidyl ether (E51), fluorinated diepoxy compounds (FDE) and tetrafunctional epoxy resins (EC4), and has little effect on the basic curing mechanism. In addition, the Kamal model combined with the diffusion factor method can effectively describe the reaction rate at different stages of the MNA curing process, especially the change in reaction rate after the glass transition. Another study pointed out that compared with several other anhydride curing agents, MNA exhibits moderate curing activity, higher glass transition temperature (Tg) and mechanical modulus due to its molecular structure characteristics.
Anhydrides
Methyl nadic anhydride is a cyclic anhydride derived from nadic acid. As an anhydride, it reacts with water or alcohols to form acids or esters, respectively.
Aromatic compounds
MNA is derived from nadic acid, which contains an aromatic ring structure, making MNA part of the aromatic class of chemicals.
Epoxy Curing Agents
Methyl nadic anhydride is commonly used as a hardener or curing agent in the production of epoxy resins, making it a part of the epoxy chemistry category.
Chemical Intermediates
MNA serves as an intermediate in the synthesis of various resins, coatings, and other chemical products, placing it in the category of chemical intermediates.
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