Ethylene-maleic anhydride, 1:1 molar ratio

Maleic anhydride content: up to 70 wt%

Melting point: 200–250 °C

Functions: glass fiber surface treatment, curing agent, compatibilizer

Applications: surface treatment for electronic-grade glass fabric and Q-fabric

The key value of EMA in epoxy systems is not merely toughening like CTBN or core-shell rubber. Instead, its high density of maleic anhydride groups enables reactive interfacial modification, improved metal adhesion, co-curing, together with a moderate toughening effect.

EMA is a 1:1 alternating copolymer of ethylene and maleic anhydride, with Mw ≈ 60,000 and theoretical anhydride equivalent weight of ~126 g/eq. It has much higher functionality than conventional MAH-grafted polyolefins and is classified as a high-anhydride-density EMA copolymer.

For interfacial modification of metals, fillers and glass fibers, the performance ranking is: EMA > SMA >> POE-g-MAH > POE

Features

High reactivity, good water solubility and excellent thermal stability

No free maleic anhydride migration and low VOC, eco-friendly additive

Irreplaceable for glass fiber sizing; used in new energy vehicles, wind power, electronics, aerospace composites

High-active reactive intermediate & crosslinker with dense anhydride groups for fine chemicals and polymer modification

Sizing / surface coupling agent for fibers, paper and inorganic fillers to boost interfacial adhesion

Water-soluble polymer precursor; hydrolyzed polycarboxylate structure for coating/pigment dispersant & thickener

Biomedical uses: drug release microspheres, bioadhesives and tissue engineering scaffolds

Applications

PA6  、 PA6 + 30% GF、 R-PA6、 、 PA66、 R-PET、 R-PBT、 R-PBT + 30% GF、 PLA、 RPET/PBT = 80/20、 Polyester-based TPU、 PBT/TPU = 75/25、 PA6/PBT = 75/25、PC/ABS

MOQ : 1

PS：We can provide you with free samples for evaluation and test, please feel free to contact us
esc086@espoly.com