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On February 1, 2022, Hexion Holdings Corporation announced that it has completed the sale of its Coatings and Composite businesses, which includes the epoxy specialty resins and base epoxy resins and intermediates product lines, to Westlake Chemical Corporation. For epoxy coatings and composite product inquiries, please contact customer service at or

Astro Mel™ NW-3A


Astro Mel NW-3A is a liquid, partially methylated melamine resin.


Astro Mel NW-3A is a waterborne resin that can be used to crosslink hydroxy-functional polymers in formulations used for wood coatings, nonwoven binders, and textile finishing. This resin also readily self-condenses to provide excellent film hardness. In most cases, Astro Mel NW-3A provides adequate cure response without the addition of strong acid catalyst. To promote cure at lower bake temperatures, the use of a blocked acid catalyst is recommended.


Astro Mel NW-3A can provide improved solvent, stain, mar, and block resistance to wood coatings and firm, resilient finishes that are highly abrasion and solvent resistant in nonwovens and textile applications. Additionally, Astro Mel NW-3A offers fast cure response at temperatures below 150 °C, low formaldehyde content, and good can stability.

Typical Properties

Property Standard Value Unit Test Method
Estimated Storage Life @ 21°C 26 weeks ADCH0473-H
Free Formaldehyde 0.5 % ADCH0188
Solids 80 ± 2 % ADCH0407
Solvent Water 0
Specific gravity 1.23 - 1.25 ADCH0362
Viscosity Gardner-Holdt S - V ADCH0593
Viscosity Brookfield 500 - 900 cP ADCH0650
Weight ~ 10.3 Pounds per Gallon ADCH0444

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