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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™ 601ULF


Astro Mel 601-ULF is a liquid, hexamethoxymethyl-type melamine resin.


Astro Mel 601-ULF can be used to crosslink a variety of solvent-based and waterborne polymers that contain hydroxyl, amino, amido, and carboxyl functional groups. Acid catalysts, such as toluenesulfonic acid, are recommended to promote cure at lower bake temperatures. Astro Mel 601-ULF is not water-soluble, but can be dissolved with the aid of alcohol or other cosolvents. In many cases, the surfactant vehicle of latex systems is adequate to promote solubility.


Astro Mel 601-ULF can provide improved solvent, impact, and abrasion resistance to wood and metal coatings. Astro Mel 601-ULF also contains a very low level of free formaldehyde.

Typical Properties

Property Standard Value Unit Test Method
Estimated Storage Life @ 21°C 52 weeks ADCH0473-H
Free Formaldehyde 0.9 % ADCH0188
Solids 98 - 0 % ADCH0407
Solvent None 0
Viscosity Brookfield 2500 - 5000 cP ADCH0650
Viscosity Gardner-Holdt Y- Z3 ADCH0593
Weight ~ 10.0 Pounds per Gallon ADCH0444

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