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On January 31, 2021, 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

EPON™ Resin 8521-MX-60


EPON Resin 8521-MX-60 is a 60 percent solids solution of an EPON Resin 1004F type epoxy resin in 50 percent xylene and 50 percent 2-butoxyethanol. This resin was designed primarily for use with a suitable curing agent to obtain complete film curing at normal room temperatures. EPON Resin 8521-MX-60 has been modified to improve its surface tension properties. Therefore, it does not normally require additives for prevention of crawling and cratering.

Sales Specification

Property Standard Value Unit Test Method
Color 3 max. Gardner ASTM D1544
Solids 59 - 61 % wt. SRC 09Q16
Viscosity at 25°C Y – Z2 Gardner ASTM D1545

1 ASTM D1545 (Gardner-Holdt - Bubble Time Method), determined on resin solution as supplied.

Typical Properties

Property Standard Value Unit Test Method
Acid value 1
Density at 25°C, Nonvoliles, Calculated 10.0 lb/gal
Density, Solution at 25°C 8.75 lb/gal
Flash Point, Setaflash 80 °F
Solvent Ratio 50/50
Solvent 2-butoxyethanol / Xylene
Viscosity Reduced at 25°C 0 Gardner ASTM D1545
Weight per Epoxide Based on Nonvolitles 910 ASTM D1652

1 Reduced to 50 percent nonvolatiles in 50 percent xylene and 50 percent 2-butoxyethanol.

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