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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

Durite™ Resin SL-524B


Liquid phenolic resole resin


SL-524B is used in foam applications

Typical Properties

Property Standard Value Unit Test Method
Brookfield Viscosity at 25°C 1600 - 2400 cps
Foam Boiling Time 35 – 45 sec
Free Formaldehyde Content 4.5 – 6.5%
Free Phenol Content 5.5 – 8.0%
Karl Fischer water content 7.0 – 11.0%
pH at 25°C 6.5 - 6.9
Solids Content, Refractive index 76.0 – 79.0%
Water Tolerance 200 – 350%

Tests are made in accordance with the current Hexion Standard Test Method and are available upon request

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