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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 Set 90 is a liquid, methylated urea-formaldehyde resin.


Astro Set 90 is designed for use in solvent-based and waterborne coatings. Astro Set 90 can be used to crosslink a variety of polymers that contain hydroxyl, amide, and carboxyl groups.


Astro Set 90 can provide more rapid cure response than typical butylated urea resins. Astro Set 90 also provides excellent storage and catalyzed coating stability.

Typical Properties

Property Standard Value Unit Test Method
Estimated Storage Life @ 21°C 26 weeks ADCH0473-H
Free Formaldehyde 0.9 % ADCH0188
Solids 96 ADCH0407
Solvent Water 0
Specific gravity 1.23 - 1.25 ADCH0362
Viscosity Gardner-Holdt Z2 - Z4 ADCH0650
Viscosity Brookfield 4000 - 9000 cP ADCH0650
Weight ~ 9.8 Pounds per Gallon ADCH0444

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